blankput aux mod

[kudos0743]

Hi guys im new to this :-) Ive been working on a little project lately, ive modded my headunit of my vy commodore to add a aux input. What ive done is ive found the points in the headunit and ran a left right and points in the headunit and ran a left right and earth. I hve then connected them to the amp(lepai ta2020) and powered it up The idea is that the ta2020 will be used to amplify my ipod so that my ipod doesnt have to be cranked up all the way to acheive decent volume Problem is... tthe ta2020 burnt out and i dont know what to do. Can anyone help?? pleas

[Perry Babin]

Do you know why the amp failed?

Was it possibly due to a problem with the signal from the modified head unit (oscillation is one possible problem)?

Or did it fail for another reason?

[kudos0743]

Gday,

What i did is i;

Ran 3 wires from the headunit (left, right and ground)
Split the ground wire into 2
Connected the left and right wires to the possitive left and right outputs on the amp
Connected both the ground wires to the negativeS left and right outputs on the amp
Pluged in power source and turned on amp the headunit
Smoke appears I then pulled apart the amp to find the wires to the power switch had melted.

I have since put a headphone jack on the wires i put into to headunit and connected it to my ipod and the wireing is doing its job and the headunit plays music from my ipod.

Cheers for replying :-)

[Perry Babin]

Did you make any changes to the wiring between the head unit after the modification?

[kudos0743]

I split the earth so i could connect it to both the amps negative outputs.

[kudos0743]

The mod iv done so far is GTO Hard Wire Tutorial

So ive got my ipod into the ta2020 input nd then to the headunit from the outputs

[Perry Babin]

Post a wiring diagram of the system.

[kudos0743]

http://i1101.photobucket.com/albums/...g?t=1286528378

[Perry Babin]

The output of that amplifier has 6v on it. Grounding any speaker terminal will destroy the amp.

The mod shown appears to be to connect the ipod directly. You wouldn't need the amp.

[Zero Cool]

Most people complain that an iPod does not have enough output to drive an aux in to reasonable volume without a little bit of gain. this persons use of the TA2020 was to provide some gain boost before going into the head unit. right idea, wrong approach. a simple op-amp circuit can be configured to provide 6-10db of boost with a minimum number of parts. The TA2020 was just not the best choice of device to use.