brent379 Posted March 19, 2015 Report Posted March 19, 2015 have a couple problems with my crescendo 800/4. been battling it for a few months now and can not for the life of me figure these problems out. 1st problem: got some pretty bad backfeed thru my speakers. im running active and headunit is a deh80prs. the noise is constant. does not go higher or lower when i push/let off the gas pedal. i have switched both grounding location and rca's and neither helped. there are a couple points where the speaker wire for the right door crosses the power wire, but it doesnt really run next to it. and the noise is coming thru both doors, not just one. 2nd problem: this is the most annoying problem. when im at full tilt and i get the woofers going, the amp will cut in and out. sometimes it will do it REALLY bad, other times it will cut out every once in a while. went and seen a guy who really knows what he is doing and look at it, we checked the voltage of both the power/ remote wire going to the amp while it was cutting in and out and he said they were both fine. aslo, idk if this may have something to do with it, but on channels 3 and 4, they 2 yellow lights come on, i dont know what they mean, idk if they are protection lights or clipping indicators or what. and it wouldnt make sense for those channels to be clipping, i set everything with a dd-1, and have turned everything back a little bit from that point. had a guy suggest doing a relay turn on for the amps, i have the remote wire running from the headunit to the 4 channel, then branching off from the terminal to my 3.5k. i dont see this being a problem, but i guess its always a possibility so im not throwing it out. if anyone has ideas on what i can check/do please let me know. im out of ideas.
Soccerballzs Posted March 19, 2015 Report Posted March 19, 2015 The 800/4 is not a very clean sounding amp . I own 2 of them not a big fan of the background noise. Changed to Ampere and no background noise what so ever. Crystal clean background . http://www.stevemeadedesigns.com/board/garage/vehicle/2438-jeep-commander/I Pioneer P99RSAmpere 38002-Ampere 125/44-6.5 inch Hertz HSK XL Mids4-8 inch JL Audio ZR Midwoofer 2-5.25 Satori Mids2-Morel Tweeters, 2 Hertz Milles 3 inch on A pillars2-Hertz Silk tweeters DC Audio Level 5/12 Skyhigh Wire Mechman 320 XS Power D3100MO Funniest Thread of the Year 2013: http://www.stevemead...dy-being-a-pos/
brent379 Posted March 19, 2015 Author Report Posted March 19, 2015 no kidding???? ive been wandering if it could possibly be the amp. ive talked to a couple people and read a couple things about people having problems with them. it honestly doesnt seem like to solid of an amp to me. dont give me wrong, i will never throw out the idea of something possibly being wrong with my install.....but this aint the first time ive ran multiple amplifiers, i know all my connections are solid. ive been trying to find someone that i could just swap a 4 channel out with real quick and see what happens. but havent found anybody so idk how to tell if its really the amp or not.
dolarbilz Posted March 19, 2015 Report Posted March 19, 2015 I just installed the 800/4 couple months ago zero issue.sounded fine no noise. You may try to ground rca to back of deck to get rid of that noise.
brent379 Posted March 19, 2015 Author Report Posted March 19, 2015 you talking about running a small piece of wire around all the rca outputs?
dolarbilz Posted March 19, 2015 Report Posted March 19, 2015 Yes sir not your rca output but your rca cable to deck
Broke_Audio_Addict Posted March 19, 2015 Report Posted March 19, 2015 Have you ever swapped the rca's while the head unit was on? That being said a lot of people's definition of "music" is a clipped 30 hz sine wave with some 80 IQ knuckle head grunting about committing crimes and his genitals.
Do-LowHrzHurts Posted March 19, 2015 Report Posted March 19, 2015 Consider there may be a bad channel from the head unit causing clipping and putting amp into protect. Has the system been DD_1'd to make sure signal is clean? Current build 300amp alt (1) xs power d4800 up front (1) Optima yellow top 34 out back All 1/0 skyhigh car audio power and ground including big 3/4 (2) Hyphonics 2000.4 front doors 5.25" memphis mclass comps don't recall exact model# future plans to run (2) pair 6-8" mids each front door. rear ski port 6.75" Alpine Type X pro series running passive rear doors factory 5.25" need better speakers. (1) ? sub amp maybe sundown saz-4500d (1) ? Subwoofer maybe team 15" getting by with a db drive 2400.1 class ab amp thats doing a good 660ish watts rms to single JL audio 13w6v2 @ 2ohms box 2.86 cubes slot port 32hrz def need way more batteries. https://instagram.com/p/4w51kBrX9g/?taken-by=boost_syndicate
dolarbilz Posted March 19, 2015 Report Posted March 19, 2015 Attach copper wire loop around rca cable outer housing ..find correct screw size to attach ring to any screw hole on back of deck.
dolarbilz Posted March 19, 2015 Report Posted March 19, 2015 On your 3.5 what are you wired at? How's your electrical..maybe amp has internal issues.. Lot of vibrating shakes parts loose.
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