|
Mr.A, Fukushima Pref.
July
2010 |
I received the upgrading parts
today.
I immediately upgraded to MM-171 from MM-151,
and the drivers are
FOSTEX FE166En.
FE166En(16cm) |
SA/F80AMG(8cm) |
I was using DIY Audio SA/F80AMG on
MM-151,
and I thought SA/F80AMG is a great driver for just
8cm.
But very, very different by changing to twice the
size of driver.
I feel natural cohesiveness from
midrange.
Vocal part was much better, and it would be
better off in time.
I don't feel habit of backloaded horn
system.
It reminds me that MM kit is a superb
product.
Thank you very much.
MM-171:
250(W)X450(H)X410(D)mm
|
MM-151S
with PIONEER PE-101A
http://blogs.yahoo.co.jp/nikaidoh_denbei/22770563.html
|
Mr.H, Saitama
Pref. 
June
2010 |
|
Since last
year, MM-151S affords me much pleasure.
PE-101A
Firstly, I mounted PIONEER
PE-101A.
Although it depends on the source, it plays a very
powerful bass
in case of jazz.
Furthermore, its treble
spreads well
because PE-101A has a titanium center
cap.
I can hear hi-hat with a proper metallic sound.
And
I added tweeters on trial, but could scarcely hear
it
above the sound of PE-101A.
MM-151S with PIONEER
PE-101A does not require any tweeters.
This combination is
5 points on a 5-point scale in jazz.
I could listen to
John Coltrane with delight.
Next, I
played Hideaki Tokunaga on CD as a vocal
evaluation.
It's not bad, however it
leaves a rough feeling.
So, it doesn't let
the music wash over me.
It is 3 points on a 5-point
scale.
What about a classical tune?
It fared better
in chamber music.
I could enjoy a well-rounded tone color
of a cello, and the sound of
a violin struggles to stay
before metallic sound
in Beethoven THE STRING
QUARTETS.
This is 4 points.
But it's no good
with a number of a great composition
like an
orchestra.
I could no longer to endure the listening
of
a stringed high-pitched sound
in the first movement
of Brahms SYMPHONY No.4.
This is 2
points.
MM-151S with PIONEER PE-101A is a fun
system
depending on the musical taste.
DCU-F131W
Next, I mounted PARC
Audio DCU-F131W.
Just as I thought, it has the
capacity to play music
compared to PIONEER PE-101A due to
the large diameter.
In general, it is called a soothing
speaker driver,
but I felt it plays music after
decomposition of the fine sound.
Even so, the sound has
charm.
It has enough bass, and plays music with good
balance
from bass to treble.
I can comfortably listen to
any musical genre such as jazz, rock,
pop, opera and a
symphony.
I could listen to the trio in the third act of
Richard Strauss
DER ROSENKAVALIER without fail,
and it was the first experience
for me in a small speaker
system.
But I am unhappy with MM-151S with
PARC Audio DCU-F131W.
This combination
is straight 4 points on a 5-point scale
because I am
very unhappy that the sound somehow lacks
the fun
factor.
Somehow I feel like this sound is
cramped.
I want bounce and the expression a little more in
bass,
and come to want more refreshingness
in middle and
high-pitched sound.
I started thinking MM-151S is too
small to exhibit
the ability of PARC Audio DCU-F131W,
so I want to mount it
on MM-161 in the
future.
MM-151S:
190(W)X450(H)X250(D)mm
|
Hasehiro
Audio
April 2010 |
― Report from Hasehiro
―
I have finally been completed custom-made bonded
type
and SSC coated MM-151TK from Mr.T.
 |
FOSTEX's limited
driver MG100HR-S
has a pure magnesium
diaphragm,
and it has a sense of speed
with
clear-cut sound. | I
mounted MG100HR-S on the bonded type SSC-MM-151TK.
It became more high-resolution
brilliant sound than I thought.
Listening to drum session,
the sofa makes a quick change
to body massager.
That's
floor-shaking amazing bass, although it's only 10cm
driver.
I think he will like them a
lot. |
bonded type SSC MM-151TK
with MG100HR-S
(screwed the side baffle boards up tight,
too.)
MM-151TK:
190(W)x900(H)x450(D)mm
|
Mr.Oguro, Hyogo
Pref.
October 2009 |
|
It has been a
month since I asked you the adhesive joining and
the horn
painting at Hasehiro listening
event in Nanba.
I painted MM-141S at last.
The basecoat
is aqueous urethane first
coating material
for exclusive use.
After that it's so
shiny, so I thought of giving up the overcoat
many
times. |
after basecoating
|
The coating material is vermilion
red of synthetic japan .
It
gets dry quickly compared to cashew japan,
so it may be said
that synthetic japan is popular
coating material.
My family said "There are mailboxes." or
"There are bird feeders."
I painted three times
now.
Before, I read an article in your website "The
sound became docile
if painted with japan."
So I wanted
to do this because once.
That's called a "japan red
model."
after
overcoating (three times) |
Well, I will report on the sound.
Originally, it was shiny
sound
by Vifa
TG9FD drivers.
But
what's more, it is because
mirror-shiny clear sound.
I've seen many
times,
"The paint
turned up the volume."
Rather, I think it is more
natural
to
say
"There was no
more need for
turn
up the volume by the paint."
Because, the expression of
musical instruments and
sound
source became
fineness
and rich.
As proof of this, I don't feel
that
it's too loud
when I listend
at the original volume level,
I feel that
it's powerful
sound.
| Until now, I couldn't listen to the
symphony, big-band sound
and the like because of a ball's
sound.
Right now,
the individual instruments became separated.
So I can listen to them with a comfortable feeling
now. |
Vifa TG9FD with Brass Baffle
Stabilizer
|
The scrape comes still short, but I tucked
own brass parts
into the groove between the front baffle
board and the side plates.
That's called a "BBS (brass
baffle stabilizer)", that's mere decoration.
From
now on I will paint the synthetic japan more than 20
times.
The thickness of japan could adversely
affect...
If so, I will cry on
your shoulder...
MM-141S:
160(W)X450(H)X250(D)mm
|
|
 Details of MM
Kit
Series |
collaboration the housing
exhibit |
|
|
Mr.Ishikawa, Iwate Pref.
June
2009 |
I painted MM-151S.
First, I transfuse
school
glue to
the whole with a damp cloth.
I polish the whole with
sandpaper after drying.
I repeated the
workflow three times and painted aqueous clear
coating
over
this.
Then, I polish the whole with sandpaper.
I
repeated the workflow three times, too.
Finnish birch baffle |
Incidentally, I changed
the front baffle
board to Finnish
birch
18mm thick.
Well, the sound was...
Hmm.
The sound like something was clogged
up.
That couldn't
be...
It fell short
of our expectations
and we walked away disappointed.
There was no effect of hard
Finnish birch.
I
explored possible solutions
on the
Internet.
I learned
that the cutting of the back
of the front baffle board is
effective
in improving the performance
for small speaker
drivers.
I tried but
I couldn't whittle away
at the birch caused by hard
material.
So I asked
a carpenter to that.
Now, I can see the cone of the driver
in
full view from the
back
of the front baffle board.
The
result... | It was a great success.
The lack of the
high-tone range disappeared and
the mid-high-tone range
feels so good.
It is totally satisfying flat
feeling.
If saying
severely is that I want to plus 1.5dB around 3kHz
and minus
1.5dB around
250Hz.
I want to try
the noise absorbing material as the final
adjustment.
What's
the sound coming to?
MM-151S:
190(W)X450(H)X250(D)mm
|
Mr.F, Gunma Pref.
April
2009 |
|
I bought PARC Audio
DCU-F131W drivers and
SSC coated front baffle
boards.
It
has been about 10 days since they started playing. So I
report.
This is the first time MM-151S has been
replaced in five years.
I replaced from TANNOY SYSTEM
12 DMTII to ALTEC CF204-8A
mounted on
MM-151S.
CF204-8A
I have
thoroughly enjoyed without regret during the past five
years.
But I was interested in Victor's wood cone
driver.
I have come to replace to PARC Audio
DCU-F131W
due to the good reputation of its wood cone
driver.
MM-151S is dry perfectly in the
past five years.
I bonded the MDF board to one
another with Titebond,
and
I gave the surface five coats of oil-based urethane
varnish.
Let's
start off with CF204-8A.
To my surprise, I couldn't listen
to the violin due to the strong stimulus
to my ears until
now, but I could listen to it with comfortable.
I had an
aha moment, I didn't think it changes a lot by bond and
coat.
I mounted DCU-F131W on the SSC coated front
baffle board.
Before the mount, I gave the surface of SSC
baffles
two coats of oil-based urethane
varnish. |
MM-151S with PARC Audio
DCU-F131W
|
I'm surprised the amazing bass from the
beginning.
But it had a poor sound in some
of the mid-high-pitched tone.
So, I put both of each
other face-to-face and connected one channel
by
reverse phase.
And I leave them for about 4 hours
after turned up the volume.
After that, they played CDs and
a TV playing till now.
During that time, the sound got
better and better, and the poor sound
of the
mid-high-pitched tone disappears every day by
degrees.
The renewal MM-151S is a little bit less than
previous MM-151S
about sharpness and force, but the renewal
MM-151S has
a rich bass and shiny mid-high-pitched
tone.
The renewal MM-151S plays any music with comfortable
to me.
In particular, vocal and piano music are
excellent.
DCU-F131W
Eric
Clapton "Unplugged"
At first, PARC Audio
DCU-F131W is less than ALTEC CF204-8A.
However, it has now
became quite high realistic sensation.
I can enjoy
it.
Midori "Encore!"
Chases violin
and piano reverberate with big realistic sensation.
I could
listen to the high-pitched sounds of a violin
without
strong stimulus to my ears.
But I still feel a little tight
to the highest pitch.
Whether it is fate of full-range
speaker driver
or whether it gets better by aging...
I'm
looking forward to it.
Henryk Szeryng
/ Arthur Grumiaux
J.S. Bach "The Violin
Sonatas" "The Partitas"
I can only say they are a
great.
The Modern Jazz
Quartet "DJANGO"
Despite the monaural
recording,
I could listen to each instrumental sound
clearly with a superb chases
and shiny vibrancy of
vibes by Milt Jackson.
The feelings are what
I am addicted to.
I couldn't listen to these musics
except Eric Clapton
during the
past five years.
Nevertheless, ALTEC CF204-8A
delighted me with piano trio
and vocal music, etc.
A
forceful and a sharp tone of CF204-8A was appealing to
me.
By the way, PARC Audio DCU-F131W is a good speaker
driver
as I expected.
I'm glad I decided to replace
ALTEC CF204-8A with
PARC Audio DCU-F131W.
I want to
spend the time with MM-151S for years to
come.
MM-151S:
190(W)X450(H)X250(D)mm
|
Mr.S, Osaka Pref.
March
2009 |
Thank you for all your trouble when
purchasing SSC coated MM-141S
and the Corian boards.
Is
PIONEER PE-101A all right?
At first, I worried about it
because the midrange didn't have
the thickness
worryingly.
Now, it has been 1.5 months, the sound
came out at a relaxed state. |
SSC
coated MM-141S with PIONEER PE-101A
|
After a sound begins to come
out,
the sound from PIONEER PE-101A has become
stronger.
It plundered MM-141S of the characteristics of
back loaded system.
For MM-141S, I should have chosen 8cm
speaker driver.
But PE-101A (10cm) is my choice,
I have
no regrets because of good looks.
They don't have the bass
like a rumbling of the earth,
but it has amazing sound for
10cm driver.
I feel comfortable enough with a
reasonable echo sound.
I enjoy brisk sound like
full-range speaker driver.
I put an accompanying
needle
felt by
half into the air chamber,
and also, in accordance with
your advice,
I put Tozawa styled
resonaters. |
Tozawa styled resonaters
|
I began trial listening in
series.
Doctor 3
"Jazzitaliano live2007"
Keith
Jarrett "Yesterdays"
Sound spread and sound
echo are great.
And it has very realistic sensation,
too.
It makes me think that the speaker was born to listen
to jazz.
Live instrument is so real, and it has a
voluminous bass.
Laura
Fygi "The Very Best"
It played her vocal
voluptuously.
During singing, I was amazed by the sound of
the saxophone.
I heard it like the player is performing in
front of me.
I listened to the various sources without a break
from
comfortable sound.
Emi Hayakawa "You and Me and
Jazz"
Eden Atwood "Waves The
Bossa Nova Session"
and all
that.
I felt no strength in classical
music as is to be expected.
But I got sleepy while
listning by echo sound of live instrument.
That's good,
too.
Kumi Koda
"TRICK"
When I first assembled, it was underscored with
bass
and the singing voice was hiding. It was intolerable
sound.
Now the singing voice comes out forward
and the
balance had improved. But this kind of music doesn't suit
it.
Of course it can play some of J-pop with a refreshed
feeling.
Finally, I listened to much-loved The
Beatles.
I could listen to it at full.
I felt vividly even the recording of the 60's, and more
listenable it than Kumi Koda "TRICK".
PE-101A
Usually, I use SONY
multichannel integrated amplifier TA-DA3200ES. But Victor
2-way bass reflex speaker system SX-M3 drives by marantz
integrated amplifier PM8003. I contrasted with PM8003
once. I felt the difference between the characteristics of
both amplifiers, but surprisingly, voluminous sound is not
so different. I thought big differences occur in the
sound. If anything, the tone color of marantz
with a sound spread and echo suits my SSC coated
MM-141S better. I studied product reviews
carefully before buying with an open mind. My mouth
splits open with better-than-expected results. That's
low-skew high-resolution sound, and I could feel centering
localization, too. Under such condition, it has a sound
spread and echo.
The sound soothes listeners.
It still makes full use of the abilities because I'm
just getting started. But surprisingly, they balance
MM-141S with PIONEER PE-101A.
MM-141S:
160(W)X450(H)X250(D)mm
|
Mr.Ishikawa, Iwate Pref.
March
2009 |
I know you're busy.
I fell in love with
Monacor SPH-30X at first sight, and imported.
I reworked
MDF baffle boards before the arrival of SPH-30X.
I
mounted it on MM-151S, it was baseless lightweight
sound.
MM-151S may have been oversized box for Monacor
SPH-30X.
But I could feel the good origin of SPH-30X.
I listened to some CDs. I heard the shiny tone
of the high-tone range
such as a vocal, a piano, a violin
and cymbals.
The problem is a bass tone.
I believe
it needs an aging in megavolume.
So, I carried the MM-151S
to a coffee shop,
and bring our friends round and have a
preview of the MM-151S.
On the previous day, I aged the
MM-151S at full blast for
about an hour with a shop
proprietor.
Then, a bass tone came out as hard as
it is to believe.
Our friends will be surprised at just a
7cm speaker driver. |
The preview of MM-151S with Monacor
SPH-30X
|
We held a preview
of Hasehiro back loaded horn speaker over 4 hours.
We
listened the sound of Monacor SPH-30X and CSS
FR125S
by MM-151S.
Monacor SPH-30X
It brings unusual shiny tone, regardless of the audio
source when listening to solo music. It is springy and
shining tone with clear-cut sound. Is it Kevlar cone
sound? We listened raptly to the shiny tone for the initial
period of time, but the shiny tone stands out by
degrees. Listening to symphony, it loses texture of a
dynamic playing part of brass section and female chorus
when treble part is coming. It needs an aging more. But
the diaphragm of Monacor SPH-30X was terrific
motion.  CSS
FR125SWe, all five gave it a loud
ovation. FR125S was absolutely
magnificent. Usually, the shop proprietor listens to
the sound of JBL 4344II (see a photo), and he praised to
the skies. MM-151S:
190(W)X450(H)X250(D)mm
|
Mr.K, Osaka City
December
2008 |
I had been using CORAL BETA-8
on MM-191T.
|
But I damaged a voice
coil of BETA-8
through my own
carelessness.
So, I thought I take this opportunity
to replace
BETA-8 with another
driver.
I considered some drivers
such as LOWTHER,
Electro-Voice and FOSTEX,
but I
want to attempt at novelty |
BETA-8
| like a car
stereo speaker.
Eventually, I bought KEF flush-mount
speaker
for home theater Ci160.2QR, and mounted it on
MM-191T.
It is coaxial 2-way speaker (16cm). MM-191T places
a plentiful load
through the long exponential curved horn,
so it plays music
with a deep tone. Contrabass and pipe
organ are great.
I report this as unforeseen
example. |
MM-191T with KEF Ci160.2QR
MM-191T:
310(W)X900(H)X450(D)mm
|
Mr.Kurotani, Shizuoka Pref.
October
2008 |
|
I built a tube
amplifier VP-3488SE (pictured right) in August,
and I was
listening to music on a 2-way (38cm and horn) large
system
in my listening room.
I was absolutely-fascinated
with the sound of a tube amp.
I want to hear the sound in
the living room all the time.
There are
self-produced zelkova-made 20cm coaxial 2-way
speakers
(pictured center) in my living room.
I was
satisfied almost flat sound of 50Hz to 20kHz,
but I learned
of Hasehiro back loaded horn speakers on the Internet
and
want to buy. |
MM-161T with JORDAN JX92S
|
I was surprised.
MM-161T with
JORDAN JX92S is almost the same low tone
as 38cm
driver.
JX92S
MM-161T makes unbelievable low
tone, it's only 12cm driver.
Recently, I built the 2nd tube
amplifier 10W+10W (pictured left).
It can also drive
MM-161T with JORDAN
JX92S.
MM-161T:
220(W)X900(H)X450(D)mm
|
Mr.Mochizuki, Shiga Pref.
September
2008 |
e-mail from
him
A month have passed since I started
listening
the sound of MM-191T with FOSTEX
FE208ES-R.
FE208ES-R
I tested repeatedly,
either increased or decreased
the sound absorbing materials
and the resonators.
Nevertheless, the undertone is not
like what I expected.
It plays only a weak
sound.
I want to play the heavy deep sound.
I'd like
to know about the relationship between the sound
and
the sound absorbing materials or the paint
application.
Please advise me.
e-mail to him
FOSTEX FE208ES-R
is great driver in terms of resolution
and sense of speed
because of low Qo.
But I think it has trouble with the
heavy deep sound.
If you paint them with SSC compound,
the undertone become strong
with bright clarity.
But it
will become poor performance in the present condition
if
you paint them.
I'd suggest
that you increase the capacity of the air chambers
by our
upgrading parts.
Please
remove one MDF boards from one MM-191T,
and add its
MDF bords into other MM-191T on trial.
In that case, the
fastening screws can't reach the opposite side.
So, please
tape temporarily with adhesive tape.
The width of the front
baffle board is short, too.
So, please put in a piece of
wood into the space between
the front
baffle and the side baffle board.
Please preview the
sound in only one side.
If it still give a poor sound,
please replace FOSTEX FE208ES-R
by FE206E or
F200A.
Please let me know if you make status of
progress.
FE206E |
F200A |
e-mail from him
I received the
upgrading parts to MM-1111T. (2-grade increase)
I brought
the front baffle boards to a do-it-yourself home
center,
and I had the pilot holes drilled.
(@JPY21x16)
They need only a little sound absorbing
materials.
Grew in the range, the sound became mellow and
improved
the efficiency.
The low pitch sound comes along
for the ride with a piano, a guitar
and a
voice without equalizer correction
because the
mid-low pitch sound near hundreds of hertz
has
momentum.
Separated sound (left, center, right)
gathered in the center.
Everything became better than
before.
I will paint them in this
autumn.
MM-191T:
310(W)X900(H)X450(D)mm
MM-1111T:
370(W)X900(H)X450(D)mm
|
Mr.K, Kanagawa Pref.
September
2008 |
One year has passed since I bought
MM-191T.
MM-191T plays with perfect harmony when I mount
Japanese driver
such as FOSTEX F200A.
F200A
But it doesn't
play with perfect harmony when I mount
LOWTHER PM6A.
It
makes a slip of the sound. In other words, it has a light
sound.
PM6A
I made all kinds of efforts,
for example, I got the horn longer
than the original by
increasing the divider plates,
but I couldn't do anything
about it.
I was almost ready to give up, but I
remounted the baffle boards
with LOWTHER PM6A upside
down from sudden random thought.
To my surprise, it took an
adequate load
and became well-balanced natural sound. It's
so small a matter.
Now I am intoxicated with an
electrifying sound of LOWTHER PM6A.
The other drivers
don't have a next chance anymore.
People have different
tastes in sound, and it varies
according to
conditions.
But I thought this is one way to take advantage
of LOWTHER PM6A.
So, I reported this as an
audiophile.
MM-191T:
310(W)X900(H)X450(D)mm
|
Mr.Ono, Gunma
Pref.
July 2008 |
|
Today I
received the front baffle boards for
PARC Audio DCU-F121W
(10cm).
And now, I am enjoying the sound of the new
MM-141S.
DCU-F121W
I enjoyed the sound of DIY
Audio SA/F80AMG (8cm) with MM-141S
for 2 years, but
I wanted to change the diameter of drivers
for MM-141S
when I listen to the sound of MM-131SS (8cm).
I thought
MM-141S is a little small to DCU-F121W,
but it was not bad
sound.
I'm looking forward to an acoustic tuning of
self-satisfaction,
while aging DCU-F121W.
A complete
different speaker with just purchase
additional front
baffle boards, and it can also change back
to the original
drivers.
I find your revolutionary breakthrough quite
impressive.
Thank you for your MM back loaded
horn.
MM-141S:
160(W)X450(H)X250(D)mm
|
Mr.I, Hokkaido
February
2008 |
|
755E
It has
been 10 days since I bought MM-191.
I'm running out of
adjectives to describe, that's high-quality sound.
I felt
both surprise and sensation because I've underestimated
the
full-range speaker driver.
Usually, I listen to jazz
and baroque music.
I get involved in a realistic sound and
forget the passage of time.
I really appreciate to meet a
good things.
It didn't take much time for me to
assemble the MM-191T.
I thought the buyer should
make the pilot holes for insertion of bolts
in the
baffle board before assembling as noted
in the detailed
assembly illustration.
That's a point well taken because of
hard MDF board.
I retightened the screws on several
occasions from the very beginning.
To my surprise,
obviously, the sound quality has improved
each time and
every day.
|
MM-191T with ALTEC 755E
MM-191T:
310(W)X900(H)X450(D)mm
|
Mr.Ito, Saitama
Pref.
November 2006 |
|
Thank you
for your arrangement for MM-161 for subwoofer box
and
SCAN-SPEAK 15W8831G00 midwoofer.
I will report on the
present situation in the subwoofer.
midwoofer
15W8831G00
I made a channel
divider (-24dB/oct)
based on electronic circuit diagram on
the Internet,
and I set up the system for
2.1ch.
Under my plan, I was supposed to paint the SSC
compound
and bond with two-component
adhesive in one sitting.
But when I purchased MM-161,
the six-ply full width was 182mm
because
of steamy summer.
Today, it is about 178mm, so I can
do the work
but I don't have enough time.
And I have
a problem in selecting the cutoff frequency.
It seemed like
it creates the peak value around at 100Hz because
my
acoustic tuning such as sound absorbing materials is not well
yet.
So I have set the cutoff at 80Hz now.
Thus
my own subwoofer remains in a state of trial
fitting.
But it has a powerful effect on my sound.
I
don't get a word of what it is playing when I only play
the
MM-161 subwoofer.
However, naturally it lends weight to the
musical composition.
I can feel its trend even weak
bassy source such as guitar solo.
Now, I use SCAN-SPEAK
15W8831G00 within a narrow range.
That's a audio life of
luxury or a waste...
MM-161:
220(W)X450(H)X410(D)mm
|
Mr.Tsuda, Aichi Pref.
November
2006 |
The present my system is MM-161 with Tang
Band W4-657SC
after all sorts of troubles and
difficulties.
Firstly, I bought MM-151 for 10cm drivers
from you.
Speaker drivers were for back loaded system
made by FOSTEX.
But the speaker drivers needed MM-161 for
12cm drivers.
I ordered MM-151 by mistake due to a lack of
attention.
I hurriedly bought the upgrade parts to MM-161 from you
and
assembled.
W4-657SC
But the
sound was the worst.
I thought that whatever I tried,
nothing was going to
my favorite sound.
I have got Tang
Band W4-657SC on hand.
So I changed the speaker
drivers to Tang Band W4-657SC.
It became refreshing
sound without stimulating tone.
I felt motivated, so
besides I bought the upgrade parts to MM-171
for 16cm
drivers from you.
I have got 16cm drivers on hand,
too.
I assembled that, but it didn't fit with back loaded
system.
Thereupon I've been thinking of paint the
enclosures.
I have got the
impregnating coating material for wood deck
on
hand.
So I painted the whole surface with it.
I spent
over 2 liters of the coating material for 2 enclosures.
I
dried them in a week or so.
And I overcoated the
outside and the horn with acrylic
paint
three
times, and assembled as MM-161 with Tang Band W4-657SC.
MDF
became so firm and the sound, too.
It changed to a
fantastic loudspeaker system. |
MM-161
with Tang Band W4-657SC and TAKET
BATPRO
|
|
Moreover, I
became curious about the back loaded sound
by 8cm speaker
driver.
I decided to buy Tang Band W3-1231SH titanium
drivers.
And I ordered SSC coated baffle
boards, Tozawa styled resonaters,
etc. to you.
W3-1231SH
I disassembled the enclosures
for 12cm drivers (MM-161)
and reassembled them for 8cm
drivers.
Eventually, I got all parts MM-141 for 8cm drivers
to MM-171
for 16cm drivers.
What the hell am I
doing?
Tang Band W3-1231SH titanium cone drivers were
dynamic sound,
but I felt that the scale and the high-tone
range were not enough.
Now I reassembled them to the
first MM-161
with Tozawa styled resonaters and Tang Band
W4-657SC.
And I have added TAKET BATPRO as the super
tweeter.
I listen to music with the super woofer depending
on the music.
It plays the great sound from pops to baroque
music.
Karen Carpenter sings songs to me
vividly.
Recently, I don't use much YAMAHA NS-1000M
and B&W N805.
Tang Band W4-657SC aluminum cone
drivers are refreshing sound.
I want to use the
contrasting ALTEC speaker driver.
So I ordered the front
baffle boards for it to you.
I really appreciate that you
devised the unique system of MM
series. |
MM-161:
220(W)X450(H)X410(D)mm
|
Mr.Nakamura, Tokushima
Pref.
February 2003 |
|
Unfortunately,
I cannot enjoy music at full blast.
So, I was looking for
enjoyable speaker even lower the volume.
My concern for low
volume was that it become poor sound
by weak
bass.
And it is blunt or coreless sound if it is voluminous
sound.
Many large woofers like that.
I chose 4
drivers from 10 to 16cm, Technics EAS-16F10,
FOSTEX
FE108ESII, ELCY Electric LC-12S and Electro-Voice.
And I
purchased MM-161T.
I was right!
I was so impressed
that unclouded, backboned, voluminous
and sharp bass came
out from MM-161T.
It seems like only the good points
of the back loaded horn system.
Previously, I have been
using the back loaded horn speakers D-37
designed by
Mr.Tetsuo
Nagaoka.
But D-37
couldn't give full play to the ability when low
volume.
So, D-37 didn't meet my living conditions.
I
think MM series is great because they have good-quality
bass
even low volume.
From the start, I adhered
6 MDF boards with school glue.
I
changed the internal wiring from associated cords
to JBL
speaker cords, and eventually it was decided CARDAS
cords.
LC-12S (12cm)
Eventually, ELCY Electric
LC-12S was the best to me among 4 drivers.
But the top
notes of high-tone range doesn't come out
from LC-12S with
MM-161T, so it needs tweeters.
It is usually the voluminous
of mid-low-tone and low-tone range.
I am hoping to increase
the voluminous, so I will increase
the number of its driver
to 2 per channel.
The hardness of the mid-low-tone range is
like JBL 4" driver.
Am I very much
flattered...?
MM-161T:
220(W)X900(H)X450(D)mm
|
| August
2005 |
I was using ELCY
Electric LC-12S with MM-161T.
I upgraded its MM-161T to
MM-191T to increase the number of
its drivers to 2
units per a channel.
I mounted two LC-12S up and down, it
was great!
It played hard sound with a soft laid-back bass
by different blowback
in the 2 drivers.
But I still
was discontented with the bass.
So, I mounted 20cm
drivers on MM-191T.
However, I sounded like capacity
shortage of the air chambers.
At last, I upgraded its
MM-191T to MM-2122T.
I was listening to music by its
MM-2122T with FOSTEX FE208EΣ,
JBL D208, Technics EAS-20F100
and ALTEC CD408-8A.
CD408-8A
(20cm) |
CF404-8A
(13cm) |
I enjoyed music by ALTEC CD408-8A with
MM-2122T,
but I had a particular concern to slackness of
around 1kHz.
So, I mounted ALTEC CF404-8A on the rear open
boxes
and I added them without crossover network.
I
listened to music without change nearly a year.
But I
started worrying about the bass volume.
P10Q (25cm)
And so I changed to Jensen
P10Q drivers.
I don't know the brand, but it is alnico
magnet.
The frame is pressed steal and the edge remains
cone paper.
Originally, it was real dog. Bass was good, but
high note didn't grow.
The gamut was cloudy and somber
sound.
But it was very sharp sound,
and the rising
time was much faster than ALTEC.
It played only the
guitar.
It was dismal.
My money went up in smoke...
I
should have bought Celetion
drivers...
After 3 months, I said "what a
relief..."
It just took longer than I expected to the
aging.
Even now, sensitive sound of the mid-high note is
sluggish.
So, I adds ALTEC
CF404-8A.
MM-191T: 310(W)X900(H)X450(D)mm
MM-2122T:
440(W)X900(H)X450(D)mm
|
| September
2006 |
I used Jensen P10Q for 5
months.
Voluminous bass and sharp sound were utterly
fascinating.
But I threw my hands up due to
insufficient sensitive sound.
Therefore, I looked for a
new driver under the following conditions.
1.
20 or
25cm.
2.
Superior expressiveness of tone
color.
3.
Fine high-mid note, bass and full band
even
a single full-range speaker.
Specifically, high-mid note
has a sensitive expressiveness.
4.
Dynamic sharp sound
in the gamut.
FOSTEX FE206E
High note reaches
to breaking point without stress,
and bass is OK.
I
didn't like the driver first because of ugly subcone
appearance.
Sound is well that ends well.
Now, it seems
like a pretty face.
But I sound weak and boring sound if
its motion is less active.
So, I think a large air chamber
is better to the driver
to make its load lighter.
I
cannot expand the width of MM-2122T anymore.
So, I piled
the other baffle board on top of
the present front baffle
board. (two-ply front baffle boards)
Audio Nirvana
Super 8
That's a wonderful
driver.
The magnet is larger than FE206E, and it is very
sharp sound.
MM-2122T began to play with pleasure the sound
of wind instrument.
It may be the best driver among 20cm
drivers.
But it is necessary to do that the capacity of the
air chamber is larger
than using FE206E.
So, I removed
the sound absorbing materials from the air chamber.
Even
so, it is my favorite sound ever.
Three-ply front
baffle boards...?
MM-2122T
special:
440(W)X900(H)X480(D)mm
|
Mr.S, Toyama Pref.
July
2006 |
Sachsenwerk has four different models
in the marketplace.
Two are full-range speakers, one
is 20cm field speaker
and the other is 22cm use
of ferrite magnet.
The other two are 13cm tweeters,
one is use of alnico magnet
and the other is use
of ferrite magnet.
The most famous driver is
20cm field full-range speaker,
and many people say
the
speaker system with 2 or 3 of the driver per channel
is the
greatest in all of the speaker systems. I purchased 14 of the driver from the
German city of Dresden
at my friend's request.
My friend
picked over drivers from them
because they have an
individual difference.
It was deeply-moving tone for
him,
so he would try to make the system
using the 3
drivers per channel this summer.
Field speaker needs DC
power supply for its electric magnet.
So it's too much of a
bother.
But some day I want to listen to the sound
on
WCW or MM back loaded horn system.
I got hold of 2 of
Sachsenwerk 22cm full-range speakers
using ferrite magnet,
and it is decidedly rare speaker
compared to
Sachsenwerk 20cm field speaker.
The sound makes my
heart melt even it plays naked. |
MM-161T with CORAL 6CX-501
and Sachsenwerk
|
MM-161T mounts CORAL coaxial 2-way
speaker 6CX-501,
but I removed the wire connection to the
tweeter.
Instead, I use Sachsenwerk 13cm cone
tweeter
across a capacitor of 3μF.
I exchanged the
advantage of point sound source
of the coaxial full-range
speaker driver.
This was because I get the most wonderful,
the world's greatest
and one and only mid-high
Sachsenwerk 13cm tweeter to sing.
The mid-low range of
CORAL 6CX-501
and the MM back loaded horn sound are
excellent.
I also impregnated the baffle board for
Sachsenwerk tweeter
with SSC compound, and it had great effect, too.
It smells agreeably of a sense of
reality and depth,
a stereoscopic effect, a persuasive
power and the luster.
But the sound forces nothing on the
listener.
It has a sense of tension but doesn't give tone
to me.
I think this is the effect of a
high-quality bass tone
from Hasehiro back loaded
horn.
The most distinctive feature of MM
back loaded horn enclosure is
that the owners can
easily enjoy many sounds
by replacement of the baffle
board.
And it brings a lot of enjoyment to me
if its
driver is not designed to back loaded horn
system.
MM-161T went through a
transition,
it began with ELCY Electric LC-12S and my
next selection was
FOSTEX F120A.
LC-12S |
F120A |
Now it's CORAL
6CX-501 but I make arrangements try some drivers.
They are
German vintage alnico drivers of the 1950's;
SIEMENS
Klangfilm 6 Ruf lsp 13g, TELEFUNKEN, EPW
NEURUPPIN,
Stern-Radio and EGW.
I will play them
with Sachsenwerk mid-high tweeter.
Back then, they made
with high efficiency,
so they are meant for vacuum-tube
amplifier. |
MM-161T:
220(W)X900(H)X450(D)mm
|
| August 2006
|
|
I really felt I had
to write.
I mounted SIEMENS Klangfilm 6 Ruf lsp 13g on
MM-161T.
The drivers are medium-term models with VAC alnico
magnets
and orange labels.
They were produced in
transition from excitation
to permanent magnet model in the
early 1950s.
DCR is about 6Ω, the efficiency is very
high.
Sufficiently-strong alnico magnet, infinitely-thin
lightweight cone paper
and aged deterioration-free
edge.
That's full-range speaker driver for tube
radio. |
SIEMENS Klangfilm full-range 6 Ruf lsp
13g
|
I mounted them on the SSC coated front baffle
boards.
At first, I
uncoupled the mid-high connection of Sachsenwerk
and
heard the sound a little.
I connected its
mid-high connection
and switched the capacitor to 2μF
for the lack of the upper side.
Oh!
Great!
I felt perfectly natural to
connection with Sachsenwerk tweeters.
Buoyant
good-quality low pitch sound.
Highly concentrated sleek and
rich midrange.
I can feel an air from Sachsenwerk
on the high-tone range.
My compliments.
There's no end
of melody and dynamism.
I am swayed by the
sound.
It took 1.5 years of twists and turns to
provide an adequate selection
of quality SIEMENS
Klangfilm.
Experience shows that German vintage speaker
must not mount
on any box.
It doesn't fully display the
positive attributes
even open back enclosure.
It
exerts its potential to the full extent at plane
baffle.
German vintage speaker is vibrating system, so it
has blowback
in extreme detestation.
But German SIEMENS
Klangfilm doesn't have a problem
to Hasehiro MM series
(MM-161T).
Hasehiro MM series has unlimited
potential.
MM-161T:
220(W)X900(H)X450(D)mm
|
|
|
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