View Full Version : At Work Building a Vs Commodore Wagon baffle 4x 15" super street Build

01-02-2014, 11:14 AM
Hello All
I'm starting on an ambitious project to build a SPL Car for For DB drag racing events.

Target 155+ db: Class Super Street 3-4
2014 dB Drag Racing*World Records (http://www.termpro.com/asp/worldrecords.asp?Org_ID=1)

Car: Holden VS Wagon

Proposed system:

Pioneer p99rs
DEX-P99RS - Stage 4 Reference Series CD Receiver | Pioneer Electronics USA (http://www.pioneerelectronics.com/PUSA/Car/Stage4/DEX-P99RS)

4 x 15" Soundstream splx 152 HF subwoofers.
SPLX-152HF (http://soundstream.com/store/splx-152hf.html)

3x Braille deep cycle batteries with 1275 CCA each

1x SoundStream mono block amp rated at 15,000 RMS drawing 1400 amps.
Sound stream XXX-15000D at 12 Volt News - YouTube (http://www.youtube.com/watch?v=BwyoSAXHDbc)

Have also brought 2 smaller 600rms mono blocks to run fronts individually

To date I have made and installed the big 3: ( 0 gauge cable to engine bay ) ground chassis, ground engine block, pos to alternator.

Ordered 50 sq feet of sound deadener ( Fat mat ) for chassis to reduce road noise/ out side noise and vibration.

Today i had my first resonance test run (see below )
system resonance 61hz with 1x 15" Total Recoil Sub 1000Rms just a spare i had floating around

i only used an iphone with an FFT analyzer near where the set up the term pro mic for the drags...
i know this may effect the out come using a iphone mic and also resonance may change after fat mat ( sound deadening ) is installed + the addition of sub cabinets.
will re-test soon.

any news of someone that has already done this will be very helpful.
Cheers in advance :)

01-02-2014, 11:24 AM
love those cars, GOOD luck!