Anyone ever heard of Lambda Acoustics?

[Cmccloud 10+ year member]

I picked up a pair of the TD15X subs and was wondering if anyone has heard of them before? I was wondering what size box and power you would recommend on them? Thanks for the help.

TD15X- 8ohm

Fs 23.2 Hz

Qms 3.82

Qes 0.31

Qts 0.28

Vas 467 Liters

Cms 0.45 mm/N

Mms 105 grams

Sd 855 cm2

Rms 4.0 Kg/S

Bl 16.7 T/m

Re 5.6 ohms

Z 8 ohms

Le 0.3 mH

Pe (max) 500 Watts

Pe (transient) 1000 Watts

"no" 1.82 %

1WSpl 94.8 dB

Linear Xmax 14 mm (peak)

Mech Xsus 20 mm (peak)

Pretty good?Not real good with parameters.

Click to read more...

 

[bonesninja 5,000+ posts]

Lambda Lambda Lambda....NERDS!!!!

 

[Cmccloud 10+ year member]

lol

 

[thch 10+ year member]

Yes, lambda used to be fairly respected for building solid, good sounding subwoofers. they had a few different lines. I seem to recall there being some issue with the company, though I'm not sure what had happened.

The woofer listed what probably intended for home theater use.

 

[squeak9798 5,000+ posts]

http://aespeakers.com/

http://www.caraudio.com/forum/member.php?find=lastposter&t=354186

 

[subzero 5,000+ posts]

Look good to me. I always judge a book by it's cover....

 

[John_E_Janowitz 10+ year member]

Since we now manufacture the Lambda woofers I can probably tell you a little about them. Lambda was started back in 1999 by Nick McKinney. He had worked at a recone shop for several years prior and had the chance to evaluate virtually every driver on the market, whether it be car audio drivers, pro audio drivers, etc. He decided he would take the best from everything he had seen and do a few tricks that others hadn't done. The biggest issue he saw was that in 99% of the drivers out there, the flux field moves as the coil moves. This is the biggest issue for distortion in a motor and almost nobody did anything to correct it. Scan Speak had one patent for shorting rings in a driver to help this issue, McIntosh had the other. Neither of these take into account the other major issue that adds distortion, and that is the core of the VC changing with excursion. The coil acts as an inductor and changes from fully iron core on the inward stroke to nearly fully air core on the outward stroke. By putting a full copper sleeve over the entire pole the eddy currents creating flux field modulation are shorted, keeping the flux field stationary. This full sleeve also forces the coil to act as fully air core throughout it's entire stroke. There was no violation of either patent and the results were much more effective than either. The full copper sleeve also greatly improves the heat transfer by pulling heat from the coil quickly and then sinking it into the steel pole. The phase plug further helps to dissipate heat to the outside. The Lambda motor was born with intention of high bandwidth, high excursion, high efficiency, and good heat transfer. You can read more on the Lambda motor here:

http://www.aespeakers.com/Lambda001-1.php

Now, regarding your TD15X drivers, these are drivers that retail at $309 each now. They are really a cross breed between a high power pro audio driver and a high end audiophile driver. They are quite efficient, nearly 95dB 1w. They can play cleanly up to 2KHz. They have high excursion, 14mm one way. We have a lot of people now using them for high efficiency, high end studio monitoring systems, home theater systems, etc. The Lambda drivers will likely have the lowest distortion of any drivers available at any cost.

For a car application, you'd have 2 options really. One would be a large vented enclosure tuned in the low 30's range. The other would be to go with a sealed enclosure and EQ the bottom as needed. If playing loud is your goal, the vented enclosure is probably the way to go. If SQ is your goal, go with the sealed enclosure and EQ.

John

 

[skateboardkid 10+ year member]

from the horses mouth - you could say

 

[sundownz Pro Seller]

John said it - I was about to dig up the same information //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Very high end drivers and very well regarded.