JZeFF Posted August 13, 2010 Report Share Posted August 13, 2010 So i got my sub and amps hooked up today, and the first thing that hit me was not the bass... it was an annoyingly loud ~15khz tone coming straight from my sub. It does it when the engine is running, and when the engine is not running. Its volume stays the same regardless of what volume the HU is set to, have it at zero and you can still here it... If i actually turn the sub off on the HU, i still get it... The only way to make it go away is by turning the radio off... What the hell could it be? lol Quote Pioneer x930 bt Rockford t2500 bdcp 18" nightshade v1 DC audio 175.4 RF power T162s up front, infinity 3 way 6x9's in the back (removing rear stage and re-doing doors soon) 3x XS power D2700's Knukonceptz 0awg all around Link to comment Share on other sites More sharing options...
raolito1980 Posted August 13, 2010 Report Share Posted August 13, 2010 Grounding issue for sure. Noise interference. RCA cables bad? Quote 2012 GMC SIerra CC System Build Headunit--Stock Sub Amp--DC 2.0k Subs--2-SA8v2's Enclosure--Need one made!! Highs Amp--Sundown SAX-100.4 Front Highs--Rockford Fosgate T2652-S Rear--Sundown Neo Pro 6.5 XS Power D2400--XS D3400 No Big Three yet! http://www.youtube.c...ser/raolito1980 Link to comment Share on other sites More sharing options...
Socky Posted August 13, 2010 Report Share Posted August 13, 2010 Move your rca cables around, make sure you dont run them next to your power wire. Mostly you are getting engine noise. Quote Jeep Cherokee 4dr -4.75 in front, new rusty's 4.5 in rear leafs -micky thompson 35x14.50x15 -locker rear -Rusty's offroad Engine/transmission/transfer case/crossmember/gas tank skid plates -Warn front bumper with 8000lb winch -Custom rear bumper -Warrior product tube doors (summertime) -Optima redtop (starter) -26XK miles and still runs like a bat out of hell Kenwood H/U 1/0 wire, 136 amp alt 200 ah batteries 12.7 daily 2 Apsm 1500 @ 2 ohm strapped on zv3 d1 with ns softparts Mb quart 125.4 wired to 4 aura 6's 3.6 cube box tuned to 36 plays down to 23hz Link to comment Share on other sites More sharing options...
TLEJ Posted August 13, 2010 Report Share Posted August 13, 2010 Unplug the RCA's from the amp and see if the noise is still there. Quote Link to comment Share on other sites More sharing options...
JZeFF Posted August 13, 2010 Author Report Share Posted August 13, 2010 Grounding issue for sure. Noise interference. RCA cables bad? There is no way its a grounding issue, i am grounded directly to the battery, lol. Move your rca cables around, make sure you dont run them next to your power wire. Mostly you are getting engine noise. Im going to try to move my RCA cables tomorrow, it was getting too dark and i was losing patience... I cant see how it would be considered engine noise, does it when the car is not even running... Quote Pioneer x930 bt Rockford t2500 bdcp 18" nightshade v1 DC audio 175.4 RF power T162s up front, infinity 3 way 6x9's in the back (removing rear stage and re-doing doors soon) 3x XS power D2700's Knukonceptz 0awg all around Link to comment Share on other sites More sharing options...
Freshman6969 Posted August 13, 2010 Report Share Posted August 13, 2010 (edited) ill garentee you you ran the RCA's on the same side as your power wire, thats interferance from the power wire your hearing, if not then your rca preouts on the amp OR h/u are bad, if the RCA cables already arent bad edit: ground to the car not the battery, its alot shorter run lol Edited August 13, 2010 by Freshman6969 Quote Legal TL scores145.6 on the dash sealed up in the low 40hz area with the port out145.5 on the dash sealed up @30hz with the port inless then 1k clamped on a 3.5k! Why would you EVER WANT flex?huh?...flex is what can make the lows lower and more air being pushed correct? My FeedbackJeep-BuildlogPT LOSER buildlog Link to comment Share on other sites More sharing options...
Socky Posted August 13, 2010 Report Share Posted August 13, 2010 Dont ground on the battery, ground to the car. That maybe part of it. Quote Jeep Cherokee 4dr -4.75 in front, new rusty's 4.5 in rear leafs -micky thompson 35x14.50x15 -locker rear -Rusty's offroad Engine/transmission/transfer case/crossmember/gas tank skid plates -Warn front bumper with 8000lb winch -Custom rear bumper -Warrior product tube doors (summertime) -Optima redtop (starter) -26XK miles and still runs like a bat out of hell Kenwood H/U 1/0 wire, 136 amp alt 200 ah batteries 12.7 daily 2 Apsm 1500 @ 2 ohm strapped on zv3 d1 with ns softparts Mb quart 125.4 wired to 4 aura 6's 3.6 cube box tuned to 36 plays down to 23hz Link to comment Share on other sites More sharing options...
Rebel4055 Posted August 13, 2010 Report Share Posted August 13, 2010 (edited) Man you just got the amps put back in didn't you LOL! Check your RCA's cause if thats not it 80 LOL Edited August 13, 2010 by Rebel4055 Quote Rest In Peace mother. January 22, 1955 - February 14, 2013 http://www.stevemeadedesigns.com/board/user/35351-megrch/ Link to comment Share on other sites More sharing options...
JZeFF Posted August 13, 2010 Author Report Share Posted August 13, 2010 Unplug the RCA's from the amp and see if the noise is still there. This will be the first thing i do tomorrow, thanks! ill garentee you you ran the RCA's on the same side as your power wire, thats interferance from the power wire your hearing, if not then your rca preouts on the amp OR h/u are bad, if the RCA cables already arent bad edit: ground to the car not the battery, its alot shorter run lol My battery is under the back seat, the run is only like 4 feet, lol. The RCA cables are pretty much brand spakin new KNU Rca cables, there is no way in hell they are bad. lol Man you just got the amps put back in didn't you LOL! Check your RCA's cause if thats not it 80 LOL Actually i switched over to sundown 1500's... lol. So kind of a bummer if this doesn't go away... Quote Pioneer x930 bt Rockford t2500 bdcp 18" nightshade v1 DC audio 175.4 RF power T162s up front, infinity 3 way 6x9's in the back (removing rear stage and re-doing doors soon) 3x XS power D2700's Knukonceptz 0awg all around Link to comment Share on other sites More sharing options...
JZeFF Posted August 13, 2010 Author Report Share Posted August 13, 2010 My impatience got the best of me... I just got back inside... I first unplugged the RCA's from the "master" amp... Still had the noise.. Then i unplugged the RCA's going from the "master" to the "Slave" and it went away... The RCA cable that straps the two amps together is like 10 feet longer than it needs to be, its coiled up in a few places and passes the power wire once or twice... Hopefully re-wiring a little will fix things up for me... Quote Pioneer x930 bt Rockford t2500 bdcp 18" nightshade v1 DC audio 175.4 RF power T162s up front, infinity 3 way 6x9's in the back (removing rear stage and re-doing doors soon) 3x XS power D2700's Knukonceptz 0awg all around Link to comment Share on other sites More sharing options...
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