Acoustic Elegance - Forum up

Acoustic Elegance - Forum up!

John opened up his forum a few weeks ago and with the TC sounds forum
closing [plus price hike], maybe there is a new flavor of the month product approaching, lol ?

http://www.aespeakers.com/phpbb2/viewtopic.php?t=514

Jul 21, 2007
Post subject: Acoustic Elegance limited run offerings

Are you ready? No, I said ARE YOU READY??? well, we're not quite ready yet but we will be releasing drivers very soon. As you have probably noticed, it has been quite some time since the main website has been updated or there have been posts on the forum. We've been working very hard sourcing parts, sourcing adhesives, building a production facility, etc etc, for the past 2 years. We are now getting ready to release some products in the near future. Actually on Monday, July 23, I will be driving down to pick up 5 pallets of top plates and T-yokes. On Tuesday, July 24, we will officially begin production.

Our first offerings will be at some great prices as we have parts we need to use up. We're out of space! We have more parts inventory coming soon also and need to make room for it. So we'll be building some limited runs of drivers to use up VC's, cones, frames, etc. All good parts, but not specific to our long term product line for cosmetic reasons or assembly process reasons. For example, we have about 60 12" poly cones here, but we plan for all aluminum cones in our new line, so we'll be blowing out the poly cone woofers.

All in all we will have some huge deals on woofers. We'll be blowing these out at the OEM pricing levels. As an example we will have about 20pcs of an original AV15 equivalent, alum cone, santoprene surround, 23mm Xmax, going for only $125 each. Each driver will come with measured parameters and warranty.

So stay tuned over the next few weeks. We are back and we have some very cool things coming to you shortly. Smile

John
_________________
Acoustic Elegance/AE Speakers
1825 Mills St
Green Bay, WI 54302

phone: (920) 469-9198


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For you crazies that like wideband woofers for special applications like
big 3 way loudspeakers like the old school days but with very high SQ,
some news on this.

http://www.aespeakers.com/phpbb2/viewtopic.php?t=488

All of the Lambda Series TD drivers will be available again soon. Including the Apollo options. Stay tuned....

John

FYI, Lambda Acoustics closed shop many years ago and John bought
out their inventory.

I don't know what John is cooking up, but if his Lambdas resemble
the original Lambda's [or better], then you can get more information here
as I have been hosting the specs for the original Lambda design.

Lambda TD Drivers [links on page don't work]
http://home.pacbell.net/lordpk/lambda/TDdrivers.html

TD15H [ignore pricing, that is the original pricing from Lambda Acoustics]
http://home.pacbell.net/lordpk/lambda/TD15H.html

Apollo Motor [ignore pricing, that is the original pricing from Lambda Acoustics]
http://home.pacbell.net/lordpk/lambda/Apollo.html

What makes the design special is the faraday motor or the Apollo motor,
not LE motor.

Scroll down and look for Lambda Motor 101;
http://ldsg.snippets.org/motors

TD15M picture;
http://home.pacbell.net/lordpk/lambda/TD15M.jpg

TD15M was a special midrange driver, accordian surround, lower
xmax, etc., whereas the other version were foam surround and higher
xmax. Cone and foam treatments were applied, and a longer phase
plug was made than the one shown in the pic.

I believe the TD woofers were made to mate with the Lambda Unity horn
project, a Lambda Acoustics prototype pic here;
http://home.pacbell.net/lordpk/lambda/unity_proto.jpg

From prototype to final production;
http://home.pacbell.net/lordpk/lambda/unity.jpg

Unity horn is a Tom Danley patent, you can do a patent search to learn more
about the design. It was licensed to Lambda for a short time, these Unity
kits were unique and now rare.

Show in the pic is a large compression driver on the horn with four midrange
drivers mounted on the horn.
http://home.pacbell.net/lordpk/lambda/horn_finish.jpg

The TD woofer has a passive radiator to boost the low end as the TD series is only about 16mm xmax [tested], but the specs are conservative at 10mm. Wideband drivers won't have high xmax because you don't really want to drive high excursion as it modulates the upper frequencies, in this special case, ported or PR can sound better than sealed as cone excursion is low near tuning, use a high pass filter.

Some projects that use Lambda woofers.
http://www.diyaudio.com/forums/showt...threadid=21523

Esg ribbon, PHL 10" midrange, Lambda SB12 [TD15H would be better]

Another project;
http://home.pacbell.net/lordpk/lambda/speaker-4.jpg

Dual TD15X {ordered from AE a few years ago}
Dual PHL 1120
DIY true ribbon, later replaced with an AC ribbon

Another project;
http://members.shaw.ca/lcleven/home_page1.html

Raven R2 ribbon tweeters
PHL 1240 6.5" midranges
Lambda Acoustics TD12X 12" bass driver

I believe these are Lambda's in a Magico design [www.magico.net]
http://home.pacbell.net/lordpk/lambda/speaker-8.jpg

This design is unknown, but the pics came from Lambda site.
http://home.pacbell.net/lordpk/lambda/speaker-6.jpg

I can only guess what it is. Perhaps a unity horn design with Lambda 15's
and passive radiators? Could it be four TD15 woofers on the front and
four 15" PR's on the back of the towers? I do remember Nick saying
that system cracked drywall. That comment was
etched in my memory. lol

More pics;
http://home.pacbell.net/lordpk/lambda/unity-3.jpg
http://home.pacbell.net/lordpk/lambda/speaker-2.jpg
http://home.pacbell.net/lordpk/lambda/speaker-3.jpg

More on the Apollo Motor
Here's what the design said about his Apollo motor design, an email
conversation we had many years ago.

The Apollo drivers use 2 more Faraday rings on the outside of the voice coil.

The top plate (steel air gap) has been modified substantially, it has 18
threaded holes for all the mounting bolts and also the magnetic path shape
was changed slightly so we could lower the weight of the driver as well (we
removed steel from places it was not needed magnetically).

The Top Faraday ring is ~6" wide and 5/8" thick at its largest points. Its
inside dimension is held to a tolerance of 0.002" so that it is spaced just
a few thousandths from the voice coil. It pulls the heat from the top of
the voice coil directly and sinks it into the cast aluminum basket, which
is about 5 lbs of solid aluminum.

The Lower Faraday ring is spaced under the air gap and inside the magnet
stack. it allows a more linear inductance to xmax curve, and transmits any
heat picked up from the lower region of the voice coil into the top plate.

The Top Ring and the Top Plate (of steel) form a tight sandwich with heat
sink compound between them. And the Top Ring is a massive thick chunk of
aluminum that now completely connects the basket to the voice coil heat wise.

Both rings also force any flux movement to fall near to zero, especially
combined with the already massive copper ring and solid aluminum phase plug.

Other than that, they are exactly the same drivers.


If you want more research information on the original Lambda Acoustics
company, a one man project that lasted for 4 years before closing shop,
you can read it all here in the Yahoo group. Go back to page 1 and
read the drama of starting up a business and trying to make a living of
doing this.

http://tech.groups.yahoo.com/group/LambdaDrivers/

Updated Post #1.

New IB15's ready to ship

http://www.aespeakers.com/phpbb2/viewtopic.php?t=536


misc;
http://www.aespeakers.com/phpbb2/viewtopic.php?t=535

The majority of people want a monster subwoofer and regular mains. Recently there has
been talks of upgrading midbass as it seems that some people are intersted. John
says he can make the Lambda product so it made sense now to re-post old news from
the past about this woofer design.

The lack of strong midbass has been around forever, even in car audio. Small drivers really
don't give you high SPL midbass and most ordinary woofers designed for
sub applications aren't designed for high SQ when crossing over at a higher low
pass frequency.

WinISD says;

Lambda TD15H Apollo {non Apollo will be great also}.
5 cu. ft. box, 32hz tune.

http://home.pacbell.net/lordpk/lambda/x15.jpg

Each woofer;
1000w input, 16mm xmax, high pass 30hz, low pass 300hz - 500hz, 124dB SPL.

Eight woofers;
8000w, 142dB.

I like the ported box based on some listening test. Extended bass, less excursion
near tuning which means less modulation of the upper frequencies. I think this is
a strange scenario where a ported design can yield lower distortion than a sealed design.

You can get very nice SQ up to 1500hz, but with a heavy EQ applied, you can
make this woofer sound like a tweeter with a 2" voice coil. hehe

When you get good drivers the speaker design gets very easy. All you do it
just hook it up and it sounds great.