Replacing Pioneer head unit with aftermarket HU (Sub working)
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Replacing Pioneer head unit with aftermarket HU (Sub working)
Hi all,
I have a 1995 LS400 with Lexus premium sound system. Last weekend I did replace stock head unit by a modern HU Pioneer AVH-X5600BHS and metra dash kit. I just want new feature on head unit so I keep stock amplifier and using preout amp from HU to feed the amplifier. Everything is done on dashboard section, no need to do any work under passenger seat and you can revert back stock head unit at anytime.
Below are what I did prepared at first try:
Well, it works, but too much noise and unstable connection. I decided to use wire hardness plug. Since I can't find correct aftermarket plug that fit in these connector, I decided de-solder the connectors from the old radio with blacked-out LCD (I have two of them) to source the connector .
I did solder all preout cable and HU wire hardness to connectors that was previously being de-soldered.
I'm using glue gun for holding all wires together
Here is the result:
Yeah it's works as expected. The only issue is I got small crack sound in around 20ms after push play/pause. Does not got these sound when switching tracks.
As you can see, metra kit have difference ABS plastic color and does not fit perfectly. For $13, you got what you're paid for. I believe beat-sonic kit is much better but it cost $125
Special thanks to all you guys here, especially from two below threads:
https://www.clublexus.com/forums/ls4...b-working.html
https://www.clublexus.com/forums/ls4...-diagrams.html
The wiring diagram is here:
There is another issue I got after installed new HU. Please you guys tell me where it's coming from and how to fix it?
Please listen to this sound track: https://soundcloud.com/trieudoahong/ls400-howling
There more pressure I put on gas pedal, the more howling sound I got, even when the car is being parked. It's really annoying and I can't live with it
Thank you all.
I have a 1995 LS400 with Lexus premium sound system. Last weekend I did replace stock head unit by a modern HU Pioneer AVH-X5600BHS and metra dash kit. I just want new feature on head unit so I keep stock amplifier and using preout amp from HU to feed the amplifier. Everything is done on dashboard section, no need to do any work under passenger seat and you can revert back stock head unit at anytime.
Below are what I did prepared at first try:
Well, it works, but too much noise and unstable connection. I decided to use wire hardness plug. Since I can't find correct aftermarket plug that fit in these connector, I decided de-solder the connectors from the old radio with blacked-out LCD (I have two of them) to source the connector .
I did solder all preout cable and HU wire hardness to connectors that was previously being de-soldered.
I'm using glue gun for holding all wires together
Here is the result:
Yeah it's works as expected. The only issue is I got small crack sound in around 20ms after push play/pause. Does not got these sound when switching tracks.
As you can see, metra kit have difference ABS plastic color and does not fit perfectly. For $13, you got what you're paid for. I believe beat-sonic kit is much better but it cost $125
Special thanks to all you guys here, especially from two below threads:
https://www.clublexus.com/forums/ls4...b-working.html
https://www.clublexus.com/forums/ls4...-diagrams.html
The wiring diagram is here:
There is another issue I got after installed new HU. Please you guys tell me where it's coming from and how to fix it?
Please listen to this sound track: https://soundcloud.com/trieudoahong/ls400-howling
There more pressure I put on gas pedal, the more howling sound I got, even when the car is being parked. It's really annoying and I can't live with it
Thank you all.
Last edited by nttung1711; 01-12-15 at 09:17 PM.
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I have that sound even when I turn off the radio (switch the audio source to off). I'm not sure if it's coming from the speaker or not. I'll check it tomorrow.
By the way I pick the ground from factory plug? Is it not good?
By the way I pick the ground from factory plug? Is it not good?
#4
Glad my thread on the Nak help you, is the Pioneer working the same way with the EQ to control the sub level?
The noise could be picked up by your RCA, you should try shielded or twisted pair cable. If you look at the factory cable they are shielded after the connector. In my case I've cut in 2 an old set of Streetwire RCA giving me the 4 RCA ends I needed.
Also the SCOSCHE dash kit is a much better finish than the Metra (Much closer to the factory finish and fit perfectly)
The noise could be picked up by your RCA, you should try shielded or twisted pair cable. If you look at the factory cable they are shielded after the connector. In my case I've cut in 2 an old set of Streetwire RCA giving me the 4 RCA ends I needed.
Also the SCOSCHE dash kit is a much better finish than the Metra (Much closer to the factory finish and fit perfectly)
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Glad my thread on the Nak help you, is the Pioneer working the same way with the EQ to control the sub level?
The noise could be picked up by your RCA, you should try shielded or twisted pair cable. If you look at the factory cable they are shielded after the connector. In my case I've cut in 2 an old set of Streetwire RCA giving me the 4 RCA ends I needed.
Also the SCOSCHE dash kit is a much better finish than the Metra (Much closer to the factory finish and fit perfectly)
The noise could be picked up by your RCA, you should try shielded or twisted pair cable. If you look at the factory cable they are shielded after the connector. In my case I've cut in 2 an old set of Streetwire RCA giving me the 4 RCA ends I needed.
Also the SCOSCHE dash kit is a much better finish than the Metra (Much closer to the factory finish and fit perfectly)
Anyway how to confirm the noise/interfere coming from bad ground or RCA plug? About the dash kit, color is not really important to me, but a big gap do .
#6
Wrap the RCA wires (all 4) in alu foil and ground one end, if it help you found your problem.
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#8
BahHumBug
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the interference is very possibly due to the CAT5/6 ethernet wiring you used to make your RCA plugs. It's completely unsuited to being used to carrying analog audio signal. I suggest replacing it with some actual speaker wire, preferably something shielded.
Otherwise good work, I'm interested in seeing if you can get this all going to 100%. The amp turn on was a major issue by previous guys who've attempted this iirc.
Otherwise good work, I'm interested in seeing if you can get this all going to 100%. The amp turn on was a major issue by previous guys who've attempted this iirc.
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the interference is very possibly due to the CAT5/6 ethernet wiring you used to make your RCA plugs. It's completely unsuited to being used to carrying analog audio signal. I suggest replacing it with some actual speaker wire, preferably something shielded.
Otherwise good work, I'm interested in seeing if you can get this all going to 100%. The amp turn on was a major issue by previous guys who've attempted this iirc.
Otherwise good work, I'm interested in seeing if you can get this all going to 100%. The amp turn on was a major issue by previous guys who've attempted this iirc.
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I've fixed it last weekend. First I did try wrap wires but it's does not works. After that I found out issue came from rca plug itself. 3 plugs of and the hissing sound came right after 4th cable being plugged in. Here is the latest version:
The SCOSCHE kit is much better than the metra one.
Honestly, the sub is working but seem does not strong enough. Not sure because of the sub is aging now or limitation inside the factory amplifier.
The SCOSCHE kit is much better than the metra one.
Honestly, the sub is working but seem does not strong enough. Not sure because of the sub is aging now or limitation inside the factory amplifier.
#13
Good job!
For the sub output, it could simply be the colder temperature making the sub more stiff reducing its output. I know that's the issue with mine, when parked in the office garage the sub come back to life.
For the sub output, it could simply be the colder temperature making the sub more stiff reducing its output. I know that's the issue with mine, when parked in the office garage the sub come back to life.