Did this yesterday, took all of a couple minutes, definitely sounds clearer! Just what I was looking for. I have Infiniti kappa speakers on all the doors and tweeters and have them amped and I thought the subs sounded muddy in comparison to the crystal clear music, of course. It sounds a lot better now, not like blown away better, but improved, good enough for now, I don't like a ton of bass anyway.
-Ryan
Last edited by rjones916; 09-27-2011 at 07:39 AM.
2008 G8 GT IOM
Livernois Stage 1 cam, Livernois ported heads with CNC valve job, Kooks 1 7/8 LT's, Magnaflow axle backs, Fast LSXR, Roto-fab CAI, 160 thermostat, BMR front and rear sway bars, BMR rear cradle bushings, BMR rear diff. bushings and H&R springs. Tuned by RPM 428.34 hp and 406.44tq. Best time of 12.36@114.9 on Street tires.
I am a novice at car audio. So I'm sorry if this a dumb question!!
I have purchased some Kicker 8" subs to replace the stock shelf units. (I am not installing an amp at this stage - maybe later).
I am assuming the above info about wiring only relates to the stock subs, and not replacements?
After reading this thread, it wasn't clear to me whether the sub wiring was actually reversed, or some weird acoustic interaction just made the subs sound better reversed.
Today I grabbed my oscilloscope, function generator, and a microphone to settle the question. The function generator output was displayed on the oscilloscope and plugged into the aux input. The microphone output was also displayed for comparison. The sound from each speaker was isolated by placing the microphone on the grille.
After comparing the speaker output at 80, 100, and 120 Hz, it appears that the sub wiring (at least on my car) is indeed reversed relative to the other speakers. I used a sine wave to test because the system messes up the phase enough to distort square waves and pulses (probably not audible, given the design of the ear).
The weak center speaker output appeared have harmonics riding on top of the signal so I'm guessing it is not happy with lower frequencies. I guess I'll have to warm up my soldering iron this weekend.
2009 G8 GT, premium, sport, sport red metallic
Roto-Fab CAI
MagnaFlow 16887 Street Series cat-back
Superchips Cortex: RotoFab 91 Octane, 25% TM, AFM off
and splash guards (that look better than dirt)
The soldering task was very easy thanks to the generous amount of solder used by the factory. The low frequency response sounds better now that the speakers are not fighting each other near the crossover frequency.Originally Posted by PaFromFL
2009 G8 GT, premium, sport, sport red metallic
Roto-Fab CAI
MagnaFlow 16887 Street Series cat-back
Superchips Cortex: RotoFab 91 Octane, 25% TM, AFM off
and splash guards (that look better than dirt)
If you don't like soldering you can just turn the plug upside down at the sub. It does make it sound better.
RIP Charlie, The GRRRR8 One
[SIZE="2"][COLOR="Red"]
2009 G8 GXP, #715 0f 1829 (one of 38 as optioned), MSM, M6, Sunroof, Onyx/Red (sold)
2009 G8 GXP, #807 of 1829, MSM, A6, sunroof
2016 Chevy SS, Mystic Green, roof, spare, #555 of 2221.
You can push the envelope, but it's still stationery
I did this mod today. Big improvement.
2013 Mustang GT bone stock, for now!
Boost coming soon!
Well of course the wiring is wrong. It was upside down and backwards being built in Australia
I need to do this mod.
2009.1 Pontiac G8 GT
White Hot w/ Onyx interior, Prem Package, Sport Package, Sunroof
SHOW: Holden badges, backup assist, & gauges, front clip shaved w/ painted lower grilles, clear bra, matte black hood scoops, 35% tint, auto dimming mirror, Homelink, bass bias mod, VG antenna, VIM, Bluetooth, spare w/ Pace jack kit, glovebox light, white fuse covers, Rotofab radiator cover, engine cover custom painted w/ SS trim, billet aluminum trim, SS hood liner, MGP caliper covers, Third Shift Studios plaque, JBL MS-8, JL amps, Morel and Focal speakers, 12" sub, Redline Goods armrest
GO: Volant CAI, Superchips Cortex 91 tune, BP white catch can, modded lower grille, Solo axle backs; DBA 4000 series rotors; Russell SS brake lines; ATE Blue; Hawk ceramic pads, Camaro SS 20s 245/35F & 275/30R
0-60 MPH: 5.01 Seconds | 1/4 Mile: 13.354 Seconds @ 105.85 MPH | 279kW / 572Nm DynoJet uncorrected
LolWell of course the wiring is wrong. It was upside down and backwards being built in Australia
I need to do this mod.
Can someone please post pics of what I would have to do for this mod? If its possible to do this without soldering, please show me how. If I have to solder, i will have to have someone else do it.
Thanks
Jon
2008 NA G8 GT
1/4 mile = 10.93 @ 123
60' = 1.47
DA = 500
Naturally Aspirated-230/242 Cam-.030 Milled Heads-Valve Job-New Era Performance ECM/TCM tune-New Era Performance Ported Throttle Body-Vararam CAI-Rick Crawford Modified Intake Manifold-VMS HSRK-UD Pulley-MSD Plugs-4" MAF-Ram Air Plate-Circle D Triple Disk 4000-4200 245mm Converter-3.45 gears-1 7/8 American Racing Headers-Magnaflow mid muffler-SLP Lowering Springs in Rear-M&H Skinnies-Mickey Thompson ET Street Radials 295/45/17-Dark Star Rims
- ARANGO AUTOMOTIVE & TOWING SERVICES, WEBSTER NY
Yeah, I just did the Bass boost and the solder trick to my system and I must say it is like Night and Day. This should have come from the factory this way. I am no longer limited to level 25, I have had up to 35 and it just asked for more with no distortion!
What a great weekend!
2014 Mustang GT- 6M/Recaros/trackpack
Little of this, Little of that...
2009 MGM G8 GT
SOLD
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