Amp question

[sc4ever96]

92 sc400
I have nakamichi audio system,few weeks ago amp got burned,so i bought new one on ebay,which appeared to be pioneer not nak.After i plugged it woofer stoped workig(pioneer amp doesn`t have output for it:veryhappy )but more interesting that front right speaker and tweeter don`t work as well.Checked all wires,and connestions everything look good.
Is there any chance that pioneer is 3channel amp,or it just malfunctioning???

 

[NakHack]

The Nak amp has 3 connections on it, the Pioneer 2. Correct? That is because the Pioneer system uses a second amp for the sub. This amp is located between the sub and the pass side rear speaker on the deck lid.

Peter

 

[sc4ever96]

Yeah,you right,the one i used to have had three connection,the one right now has only two.But my question was,why only three out of four speakers work,for sub i just gonna go with different amp.

 

[NakHack]

Oops, I missed part of my reply.

Try to use a different output to those speakers. ie... you will need to make some 'jumpers' and connect the FL + - outputs from the amp to those speakers.

This way you can just double check to ensure the speakers are ok, perhaps the nak blowing had something to do with the FR speaker?

Do you have the nak amp? might be repairable.

Peter

 

[sc4ever96]

I do have an old nak amp,took it apart but didn`t find anything what could be burned or something...Haven`t tested it yet.
What might possible happen to it?

 

[NakHack]

Did/do you have the lexus cell phone?

Some have reported a problem with corrosion on the mute circuit.

Peter

 

[sc4ever96]

No i don`t,but i had problem with drain hose right above amp,it probably dripped on it,and got it shorted.

 

[NakHack]

Did you try sending a signal to those speakers up front?

Let me know if you decide to dump that old amp. I've plan on dissecting some more of the sc electronics in the future.

Peter

 

[Hallj]

I have the same problem, water next to the amp.

When you unplug your amp does the Head unit still turn on?

Jeff

 

[Hallj]

Nevermind, figured it out.
Now looks like i'll have to figure out how to retro an aftermarket amp to the factory harness.
Shouldn't be too hard. anyone done this before?
Jeff

 

[NakHack]

Yes. It is very easy. Just follow the pinouts.


Peter

 

[Hallj]

Is it okay to put the Head unit outputs into the low level amp inputs?
I have an aftermarket amp but it only has low level inputs.
Jeff

 

[Hallj]

Also, wich wires do I use for the negative side speaker inputs into the amp.
http://www.lextreme.com/Lexradiowcd.pdf
Thanks,
Jeff

 

[NakHack]

Sgnd

You are keeping the OEM head unit? Then sure, the outputs from the OEM Head unit are low level and will work with the aftermarket amp fine.Use Sgnd for the speaker - (signal ground)