Weird issue after Forscan/DSP install
#21
I think I'm going to order a speaker to female rca adapter (link in prior post) and a set of rca's and run the rca's to the back instead of using the 9 wire for signal. I'll see if I can find a headphone to rca adapter locally and test that before my order.
#22
That's exactly what I'm thinking but can't figure out where. I've confirmed polarity everywhere, and I have one central ground using the bolt everyone uses behind the back seat. I sanded it down to bare metal and ran 0 gauge to a distro block that is about 18" away and have 4 gauge coming out to the amps (8-10" run) and this is also where the DSP is grounded. I confirmed no bare wires behind the head unit and at the amps.
#23
I did some more tinkering and found that the right front RCA is causing an issue. I flipped sides and the tweeter issue switched sides. So it wasn't my tweeter, it's the amp. I'm wondering if it got damaged from the weird ground issue I'm having. Either way, I have another amp coming and still plan on running signal to the back via RCA cables instead of the 9 wire. Hopefully I can wrap this all up by the weekend.
#24
Senior Member
If you moved the front right RCA to the left, and the tweeter issue moved sides, then the problem is with your RCA wiring, and not the amplifier or tweeter. If you soldered the RCA's on yourself, make sure no solder is shorting out the connection between the center positive and outer negative. Also make sure that nothing is shorting out on the outer "sleeve" (usually there is a little piece of plastic tube on the inside separating the piece that is soldered and the sleeve). Also make sure you used the correct speaker wires for the RCA (correct colors and polarity).
It is not the tweeter, or amplifier, or DSP. If you plug that bad RCA into another channel or another amplifier, the problem will continue.
You need to fix your wiring on that RCA channel.
It is not the tweeter, or amplifier, or DSP. If you plug that bad RCA into another channel or another amplifier, the problem will continue.
You need to fix your wiring on that RCA channel.
#25
I used speaker to rca adapters and used correct polarity. I used heat shrink over the solder to ensure no grounding issues. The front factory speaker wires were tapped for the rca signal. The white + and white/brown - for the front left and white/purple + and white/orange - for the front right.
#26
Senior Member
Yep those colors are correct for the front left and right speakers.
Still, if you moved the RCA and the problem follows the RCA, that tells me something is wrong with the RCA or before that at the source.
100% positive you didn't mix up something when you soldered those to the speed wires? Kept all the polarities and channels correct? And you tried a new RCA connector on the one that seems bad?
Still, if you moved the RCA and the problem follows the RCA, that tells me something is wrong with the RCA or before that at the source.
100% positive you didn't mix up something when you soldered those to the speed wires? Kept all the polarities and channels correct? And you tried a new RCA connector on the one that seems bad?
#27
I think you might be on to something. I have an rca splitter that I used to split the left RCA channel into both inputs on the amp and the tweets now play as they should. Looks like the issue is the right RCA coming from the dsp. I swear I swapped that cable and had the same issue, but I'll do it again. It can't be the dsp, as this is the second one. I'll get a better idea once my speaker to female rca adapters come in tomorrow and I run rcas back to the dsp.
#28
I've got some more insight to the issue. I found out that my amps use balanced differential inputs which require twisted pair rca's. I've been using standard braid shielded cables. I'm switching my main RCA to twisted pair tomorrow and hope to do the outputs from the dsp to the amps by next week.
#29
Senior Member
Just an FYI but I just checked the Kicker KISL speaker wire to RCA adapters and the center pin on the RCA end is the negative contact. Most times, the outer metal ring is the negative but on these, the center pin is the negative according to their wire colors. Just an FYI in case anyone is using them.
#30
Senior Member
iTrader: (1)
Just an FYI but I just checked the Kicker KISL speaker wire to RCA adapters and the center pin on the RCA end is the negative contact. Most times, the outer metal ring is the negative but on these, the center pin is the negative according to their wire colors. Just an FYI in case anyone is using them.
WTF?