Sub will only work if I have 1 RCA cable plugged in.

Yep, there is an on/off setting, and a phase setting. I tried both of those.

The *only* thing I can do to get the sub to work is unplugging one RCA cable. Very odd situation. I'll be trying another set of RCA cables tomorrow when I get my hands on them. Hopefully it's as simple as that, but at this point I'm not sure how the cables can be the issue if the cables can individually send the signal to get the sub to work, but when they're both plugged in, nada...

Unless there's some kind of weird grounding issue going on with the cables?
No man.. The cables should not be the culprit if both Ch work individually.be a waste of $ going to purchase another set and wasting your time, already knowing its not the RCAs
 
Yep, there is an on/off setting, and a phase setting. I tried both of those.

The *only* thing I can do to get the sub to work is unplugging one RCA cable. Very odd situation. I'll be trying another set of RCA cables tomorrow when I get my hands on them. Hopefully it's as simple as that, but at this point I'm not sure how the cables can be the issue if the cables can individually send the signal to get the sub to work, but when they're both plugged in, nada...

Unless there's some kind of weird grounding issue going on with the cables?
Im pretty sure its going to be the HU more than likely. got be a setting issue or like mine.. Internal HU issue. Could have been a firmware issue or ?? I just pulled that one out and put another HU in and even a BNEW one afterwards and no issues
 
Im pretty sure its going to be the HU more than likely. got be a setting issue or like mine.. Internal HU issue. Could have been a firmware issue or ?? I just pulled that one out and put another HU in and even a BNEW one afterwards and no issues
I appreciate all of your help thinking this through.

Since the sound quality is decent even with just 1 RCA, I might just go that route for now until I upgrade head unit. Only bummer is the head unit I have is an ILX-W650, and I paired that with a KTA-450 amp (they fit together in the double din opening like peanut butter and jelly. If I went with another head unit, I'd like to find something similar where there's a small amp that can fit behind the dash to drive the speakers separately.
 
So.. a simple check on the RCAs would be that (if you have the HU pulled to get to the backside of the HU, #1 Check make sure you are on S or SW L+R OUT on back of the HU, or Rear if you have it set up that way. Take one RCA, white and plug into Left on HU, and L on Amp, if works, Great! Then remove and place R/Red on L/White on HU and same on Amp in and try same with other ch as a single RCA Out from HU to single IN to amp on both RCAs, If both work R/and White at a single run from HU to Amp , the RCAs are fine. Its going to be the HU. It has an Internal issue recognizing a dual input on sub ch from the HU board
 
So.. a simple check on the RCAs would be that (if you have the HU pulled to get to the backside of the HU, #1 Check make sure you are on S or SW L+R OUT on back of the HU, or Rear if you have it set up that way. Take one RCA, white and plug into Left on HU, and L on Amp, if works, Great! Then remove and place R/Red on L/White on HU and same on Amp in and try same with other ch as a single RCA Out from HU to single IN to amp on both RCAs, If both work R/and White at a single run from HU to Amp , the RCAs are fine. Its going to be the HU. It has an Internal issue recognizing a dual input on sub ch from the HU board
Sounds like it's definitely the HU then. That's a test I did earlier today, and it works fine on each RCA individually, so I think you're right, that it's likely an internal HU issue at this point. Guess I'll ride on it with 1 RCA cable until it's time for an upgrade!
 
I appreciate all of your help thinking this through.

Since the sound quality is decent even with just 1 RCA, I might just go that route for now until I upgrade head unit. Only bummer is the head unit I have is an ILX-W650, and I paired that with a KTA-450 amp (they fit together in the double din opening like peanut butter and jelly. If I went with another head unit, I'd like to find something similar where there's a small amp that can fit behind the dash to drive the speakers separately.
I just looked up that HU.. Its pretty dammned nice too man.. It has 6 -4v RCAs out. Sub /rear/front. Should be working fine?? Is it still under warranty??? Have you tried to RESET the HU yet? You will have to put your settings back in. Hold that RESET Button for like 10 seconds with a toothpick works fine for me
 
Seems like this *might* be a common issue with the ILX-W650. I just stumbled across this thread, several people having the same issue. None of them mentioned unplugging an RCA, not sure if they tried that. That's my comment at the very end (Kozren).


I just looked up that HU.. Its pretty dammned nice too man.. It has 6 -4v RCAs out. Sub /rear/front. Should be working fine?? Is it still under warranty??? Have you tried to RESET the HU yet? You will have to put your settings back in. Hold that RESET Button for like 10 seconds with a toothpick works fine for me
I'll have to check the warranty period on it. I haven't tried a hard reset either. Might give that a go at this point as well...
 
Sounds like it's definitely the HU then. That's a test I did earlier today, and it works fine on each RCA individually, so I think you're right, that it's likely an internal HU issue at this point. Guess I'll ride on it with 1 RCA cable until it's time for an upgrade!
Try a Reset too. Could help? You may call and see if there is a Firmware update on that HU too that may fix that issue even?? If not.. Id tape up the exposes RCA or remove from the HU and amp and run the single side until an upgrade when funds permit.?
 
Seems like this *might* be a common issue with the ILX-W650. I just stumbled across this thread, several people having the same issue. None of them mentioned unplugging an RCA, not sure if they tried that. That's my comment at the very end (Kozren).



I'll have to check the warranty period on it. I haven't tried a hard reset either. Might give that a go at this point as well...

Wow!!! Interesting man. Very 👀 👀 :poop:
 
This has me quite excited... They specifically call out "Subwoofer Output"...


Seems you're definitely onto something with it possibly being firmware. I'm gonna look into performing the upgrade and see if that fixes it. Thanks so much for all of your responses and research to help me! Greatly appreciated!
Man.. That takes care of quite a few issues!! Hopefully that gets the HU working properly. Nice find. This also helps people out on this Forum that may have issues with the same HU or other HUs of the same software. Let us know if it helps man!! Thanks. Im going save that. Be nice to have a Sticky with HU Firmware updates
 
I appreciate all of your help thinking this through.

Since the sound quality is decent even with just 1 RCA, I might just go that route for now until I upgrade head unit. Only bummer is the head unit I have is an ILX-W650, and I paired that with a KTA-450 amp (they fit together in the double din opening like peanut butter and jelly. If I went with another head unit, I'd like to find something similar where there's a small amp that can fit behind the dash to drive the speakers separately.
Sound Digital makes a mini 2 ch that has a built in fan to keep it running cooler. This is a refurb. not sure if its still made or not?? Make have to look. I had an older Stetsom mini that had a built in fan I sold on this site to a good member. It ran a pair of Kicker 6x9s with ease in my brothers F250 Van for a good month or couple weeks until i replaced it with an old Alpine Duo-b 4 ch for front and rears. Banda 125.2 and a Smaller Stepsom 160.2 are some other smaller ones newer that do not have a fan in them



That old Stepsom was a little bity joker. Worked really nice. You could Velcro or Zip tie that under the dash, LOL
 

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When the bass goes out, do the subs stop moving?
Yep, the subs don't move at all when both RCA cables are plugged in.

Man.. That takes care of quite a few issues!! Hopefully that gets the HU working properly. Nice find. This also helps people out on this Forum that may have issues with the same HU or other HUs of the same software. Let us know if it helps man!! Thanks. Im going save that. Be nice to have a Sticky with HU Firmware updates
I updated the firmware this morning. Unfortunately it didn't fix my issue, but maybe it'll help someone else in the future!

Sound Digital makes a mini 2 ch that has a built in fan to keep it running cooler. This is a refurb. not sure if its still made or not?? Make have to look. I had an older Stetsom mini that had a built in fan I sold on this site to a good member. It ran a pair of Kicker 6x9s with ease in my brothers F250 Van for a good month or couple weeks until i replaced it with an old Alpine Duo-b 4 ch for front and rears. Banda 125.2 and a Smaller Stepsom 160.2 are some other smaller ones newer that do not have a fan in them



That old Stepsom was a little bity joker. Worked really nice. You could Velcro or Zip tie that under the dash, LOL
Thank you for the suggestion!
 
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