Kranny Posted February 24, 2012 Report Share Posted February 24, 2012 what kind of headunit do you have? some have a changeable sub level Quote Link to comment Share on other sites More sharing options...
Wicks Posted February 24, 2012 Report Share Posted February 24, 2012 0.2v is the max setting on the gain so you're going backwards. Makes sense that the voltage is going down. That number refers to the output voltage of your preouts. Quote This post sent with 100% recycled electrons. 2004 BMW M3Mechman 280A 2 - XS Power XP30001 - XS Power D375 500F of Maxwell SuperCaps (soon to be 1000F) iPadMini2Dash mounted O-scopeAudison bitOne (Remote DRC MP) Highs Amp - PPI Art A404 Hertz HSK130 (HSK165 waiting...) DC Audio DC9.0K 2- DC Audio XL12m2LEGAL - 147.3dB @ 41Hz OUTLAW - 150.2dB @ 45Hz OUTLAW - 145.7dB @ 30Hz JUNE 2014 SOTM WINNER 2014 COLORADO PEOPLE'S CHOICE WINNER SOTM BUILD:http://www.stevemeadedesigns.com/board/topic/141656-wicks-e46-m3-build-bass-turbo-button-and-a-big-new-addition/page-68#entry2802026 Link to comment Share on other sites More sharing options...
f155mph Posted February 24, 2012 Author Report Share Posted February 24, 2012 I have a Sony CDX-GT630UI the preamp out according to the manual is 2.0v. I used the dedicated sub out from the head unit to the amp. If 0.2v is the max it still doesn't make sense since when the test tone is playing it is only reading 2.9v at the speaker output. When I turn the gain higher to like the halfway point it reads 1.8v from the speaker output. Either way when the gain is at the halfway point, the speaker out should be way higher than 1.8v. Am I doing something wrong or is there something wrong with the amp? Quote Link to comment Share on other sites More sharing options...
Wicks Posted February 24, 2012 Report Share Posted February 24, 2012 Use your DMM on your rca's and verify the preout 2V from the HU. Quote This post sent with 100% recycled electrons. 2004 BMW M3Mechman 280A 2 - XS Power XP30001 - XS Power D375 500F of Maxwell SuperCaps (soon to be 1000F) iPadMini2Dash mounted O-scopeAudison bitOne (Remote DRC MP) Highs Amp - PPI Art A404 Hertz HSK130 (HSK165 waiting...) DC Audio DC9.0K 2- DC Audio XL12m2LEGAL - 147.3dB @ 41Hz OUTLAW - 150.2dB @ 45Hz OUTLAW - 145.7dB @ 30Hz JUNE 2014 SOTM WINNER 2014 COLORADO PEOPLE'S CHOICE WINNER SOTM BUILD:http://www.stevemeadedesigns.com/board/topic/141656-wicks-e46-m3-build-bass-turbo-button-and-a-big-new-addition/page-68#entry2802026 Link to comment Share on other sites More sharing options...
skittlesRgood Posted February 24, 2012 Report Share Posted February 24, 2012 whats the volume at on the HU? this sounds like an input problem. or perhaps the tone you used. where did you get it from? Quote If I answered you in a well mannered, informative way, you asked a good question or had a good attitude. If I was an asshole, you asked a stupid question or you had a fucktard attitude... or I was in a bad mood. Team BassickHU: Pioneer AVIC Z110Front: Peerless SLS 6.5", Peerless HDS 4", Rainbow tweeter - running activeAmp: JL HD600/4 and DC 4 channel (bridged to midbass)Processor: JBL MS-8Subs: 2x 12" AA MayhemsAmp: DC 3kElectrical: DC power 270xp alt. 1/0 big 4. XSpower D3400 and six D680s. http://www.stevemeadedesigns.com/board/topic/121795-29-update-the-buick-is-getting-a-rebuild/ Top career scores: DBdrag 151.7 MECA SQ 82.25My SOTM build Yeah. im pretty sure they dont warranty retarded people. Link to comment Share on other sites More sharing options...
ChevyBoy95 Posted February 24, 2012 Report Share Posted February 24, 2012 .02 is the highest on gain, 5v or 8v or whatever it is, is the lowest. Quote Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's] BL : http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/YouTube: http://www.youtube.com/hitemwiththeflex/ Link to comment Share on other sites More sharing options...
f155mph Posted February 24, 2012 Author Report Share Posted February 24, 2012 Would the direction of the subs make a huge different? When I only have one sub it was facing the bumper. Now I have it facing up toward the rear deck. As for setting the gain I downloaded some test tone and will try it again after work. Quote Link to comment Share on other sites More sharing options...
STEvil Posted February 25, 2012 Report Share Posted February 25, 2012 face subs towards rear in trunk cars always. Quote MickyMcD - "Capable of making some serious trouser flapping volumes at where's-my-testicles frequencies, the Servo-Drives used to be fairly jaw dropping..." Any time you have have a power wire next to your frame put some rubber hosing (or cut up an innertube) around it. The wire is bound to wiggle (due to driving or flex) and the casing will eventually wear through. Hammerdown... 1% no links to outside websites, business related FB/YT pages allowed. Link to comment Share on other sites More sharing options...
f155mph Posted February 25, 2012 Author Report Share Posted February 25, 2012 First off I just want to thanks everyone for helping. Having said that I still can't figure out what is going on. I downloaded a 50hz test tone. The volume range on my HU go from 0-50. I turn my HU up to 30, anything above it the speakers will start to distort. With the test tone running, volume at 30 and the gain max out at 0.2v I am get only 18v from the speaker output on the amp. My 500/1 didn't have this problem with this HU. Could there be something wrong with my amp or my alternator not pumping enough amperage to the Amp? THANKS Quote Link to comment Share on other sites More sharing options...
Wicks Posted February 26, 2012 Report Share Posted February 26, 2012 Did you verify that your head unit is hitting that 2V? Quote This post sent with 100% recycled electrons. 2004 BMW M3Mechman 280A 2 - XS Power XP30001 - XS Power D375 500F of Maxwell SuperCaps (soon to be 1000F) iPadMini2Dash mounted O-scopeAudison bitOne (Remote DRC MP) Highs Amp - PPI Art A404 Hertz HSK130 (HSK165 waiting...) DC Audio DC9.0K 2- DC Audio XL12m2LEGAL - 147.3dB @ 41Hz OUTLAW - 150.2dB @ 45Hz OUTLAW - 145.7dB @ 30Hz JUNE 2014 SOTM WINNER 2014 COLORADO PEOPLE'S CHOICE WINNER SOTM BUILD:http://www.stevemeadedesigns.com/board/topic/141656-wicks-e46-m3-build-bass-turbo-button-and-a-big-new-addition/page-68#entry2802026 Link to comment Share on other sites More sharing options...
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