MrSkippyJ Posted May 18, 2016 Report Share Posted May 18, 2016 It's only confusing because hi/low usually means something different. I don't have the amp to read the manual. It confused 2 people, so it's obviously confusing.That's why it's important to read the manual, people keep missing this step and ask questions that are answered in the manual.And if you knew the amp you would see that there is no conventional hi input, just RCA's. Maybe we shouldn't answer if we don't know the answer? Assumption is the mother of f*ckups. I can't disagree with any of that! I would only say I didn't think t was an assumption. However, I was still wrong and reading the manual is the right answer. F150: Stock 2019 Harley Road Glide: Amp: TM400Xad - 4 channel 400 watt Processor: DSR1 Fairing (Front) 6.5s -MMats PA601cx Lid (Rear) 6x9s - TMS69 Link to comment Share on other sites More sharing options...
VDub916 Posted May 18, 2016 Author Report Share Posted May 18, 2016 Ground isolator and rca's made no difference Link to comment Share on other sites More sharing options...
kirill007 Posted May 18, 2016 Report Share Posted May 18, 2016 Ground isolator and rca's made no difference Did you check the ground at the HU? Or do you have a separate amp for the door speakers? (i'm assuming yes since:"Both of my amps go to a "T" block") Could you still post some pictures from the install/grounding locations? A ground loop isolator is a bandaid, it's not a good way to solve a problem.(in my opinion it's useless) Thinking is the root of all problems... You ALWAYS get what you pay for. Link to comment Share on other sites More sharing options...
Efreakingt Posted May 18, 2016 Report Share Posted May 18, 2016 Did you ever try grounding it at the T block or have you only done it on the separate ground? Link to comment Share on other sites More sharing options...
VDub916 Posted May 18, 2016 Author Report Share Posted May 18, 2016 Link to comment Share on other sites More sharing options...
VDub916 Posted May 18, 2016 Author Report Share Posted May 18, 2016 Those aren't the Amps currently in there but same layout. I tried ground as picture and I tried grounding them separately, no difference. I think there is something wrong with the jl amp internally. I've never had this problem before in any of my installs and I've used a lot of different amplifiers. The problem goes away when I take out the jl amp. I want to think that it's not the amp because it sounds so clean and powerful but it's messing up the rest of my system. Link to comment Share on other sites More sharing options...
Triticum Agricolam Posted May 18, 2016 Report Share Posted May 18, 2016 Pull the amp out and wire it directly to a battery. Wire from your phone directly to the RCA inputs on the amp. See if the problem is gone. If it is, its something with your installation, if it not, it's the amp. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds: Link to comment Share on other sites More sharing options...
ShadeTreeMechanic Posted May 18, 2016 Report Share Posted May 18, 2016 What head unit do you have? Some have a fuse on the RCA shield that can cause problems if it is blown. 91 C350 Centurion conversion ( Four Door One Ton Bronco) 250A Alternator (Second Alternator Coming Soon) G65 AGM Up Front / Two G31 AGM in Back Pioneer 80PRS CT Sounds AT125.2 / CT Sounds 6.5 Strato Pro component Front Stage CT Sounds AT125.2 / Lanzar Pro 8" coax w/compression horn tweeter Rear Fill FSD 5000D 1/2 ohm (SoundQubed 7k Coming Soon) Two HDS315 Four Qubes Each 34hz (Two HDC3.118 and New Box Coming Soon) Link to comment Share on other sites More sharing options...
VDub916 Posted May 18, 2016 Author Report Share Posted May 18, 2016 Pioneer 5700 BHS is the headunit I run I just tried grounding the rca's with wire but made no difference. I completely removed my 4 channel amp and left the jl and sub hooked up just for the heck of it and I can hear a very slight bump through the sub when I put the brakes on or my blinker. Anyone want to loan me a slash 1000/1 to try? I'm taking the amp in to a repair shop for their opinion Link to comment Share on other sites More sharing options...
VDub916 Posted May 19, 2016 Author Report Share Posted May 19, 2016 Amp guy says the amp looks fine and that its most likely the pico fuse in my pioneer headunit. I really have a hard time believing that since all of the other amps sound fine. Any last input before I put this amp on eBay? Link to comment Share on other sites More sharing options...
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