ProSoundWeb Community

Please login or register.

Login with username, password and session length
Advanced search  
Pages: [1]   Go Down

Author Topic: Lab Sub Spawn/Derivative  (Read 2405 times)

Antone Atmarama Bajor

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 851
    • http://www.geocities.com/somesoundgreat
Lab Sub Spawn/Derivative
« on: October 25, 2008, 03:01:19 pm »

    Here's my little purple people eater, code name Mr. Beefy!

http://img.photobucket.com/albums/v358/SpodeMaster/DSC02064-1.jpg

http://img.photobucket.com/albums/v358/SpodeMaster/DSC02066-1.jpg

http://img.photobucket.com/albums/v358/SpodeMaster/MrBeefyPreliminary.jpg

Sweeps not Calibrated to anything!!!    

    This is my "Hi-Fi"!?  Bass/Key rig I spent a couple of Maddening months putting together in my free time.

    I decided to build the Quad  Sealed Lab12 box, after building a pair of pairs for someones home theater, and being quite impressed with the results.

   The Top box is a little more of a compromise than I would normally have made, but I was sick of staring at my old JBL bullet tweeters and wondering if I would ever do anything with them.

    I really would like to try the Ciare Tweeter sometime, but anyhow.

A Pair Of RCF L8S800's, and an alnico JBL Bullet.
Xover @ 3kHz 12dB L-R to a 24dB L-R.
Box tuned to ~60Hz

The Lab12's are in ~4cu' Powered by 2 1kW ICE amps.
The EQ is a simulated Linkwitz Transform.
At the Moment Low Passed at 80Hz.

    I was a little disappointed with the L8S800 as far as LF, instead of a gradual roll of like measured and predicted, I get a step down of about 5-8dB at around 150H and a Flat response from 60-150.  There is also a 1kHz dip in these drivers.  I don't know if its a Baffle Step, but I just have to deal with it.

    The JBL tweeter claims useful to 2.5kHz.  But it seems to reach linear amplitude at around 4kHz, so I have some dips in the mid.

    All that said.  My Nord Synth sounds incredible through this set up.  And I can get a wide range of Bass tones also, and the Attack is incredible.

    Anyhow

Thanks For the Lab12 Tom D. I've been enjoying playing with these drivers.

Antone-
Logged

peter.golde

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 252
Re: Lab Sub Spawn/Derivative
« Reply #1 on: October 26, 2008, 11:50:41 am »

Beautiful work. What coating did you use?
I am surprised a bass monster like you would rely on the 8's to carry you down to meet the Labs. You said it modeled ok, maybe they need some more break in time.
Nice looking combo.
Logged
"You can't be a real country unless you have a beer and an airline. It helps if you have some kind of a football team, or some nuclear weapons, but at the very least you need a beer" - Frank Zappa

Antone Atmarama Bajor

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 851
    • http://www.geocities.com/somesoundgreat
Re: Lab Sub Spawn/Derivative
« Reply #2 on: October 26, 2008, 08:31:56 pm »

     Duratex African Violet.  For 10$ more you can choose almost any color from the Shrewin Williams 6000 Series of pigment.

   Hmmm That could be true.  I didn't really think of the supension Break in.

    I also think that measuring it a few feet off the ground is going to change the Half Space Loading Significantly.  

    Its great fun though.

Thanks!!

Antone-
Logged
Pages: [1]   Go Up
 

Page created in 0.026 seconds with 18 queries.