kicker kx450.2

[timwebb]

any one have a pic of the board?

 

[timwebb]

anyone know what the driver transistors are for this amp?

 

[Perry Babin]

Which leg of the driver transistor is connected to ground?

 

[timwebb]

2n4403 the collector is on the ground.

 

[Perry Babin]

You have the part number for the driver. Was there something else you needed?

 

[timwebb]

i was trying to see if this was right cause they were changed

 

[Perry Babin]

The 4403 is likely to be the correct part.

 

[timwebb]

here's the 494
1 1.5
2 3.6
3 05
4 0
5 1.46
6 3.44
7 0
8 10.75
9 7.77
10 4.91
11 4.91
12 4.91
13 21.09
14 10.75
15 4.63
16 4.62

 

[Perry Babin]

Assuming that the 21.09 is supposed to be 12.09 and reversing the last 8 pins, it looks OK. The amp should be producing rail voltage is you have the FETs and rectifiers in the circuit.

 

[timwebb]

the amp has rail voltage and i have the fets in still not coming on?

 

[timwebb]

the board

 

[Perry Babin]

Have you tried running all of the post and switches through their entire ranges to see if the amp ever produced any audio?

 

[timwebb]

i forgot what rectifiers were in there trying to find them

 

[timwebb]

ok i got it to power up.but no sound no dc at the speaker terminals. i might have put the rectifiers i think

 

[Perry Babin]

I can't tell if you're asking for help or if you're simply updating the thread. If you need help with something, please make the questions as clear as possible. Proper punctuation helps.

 

[timwebb]

sorry been up for two days.i got the amp to turn on and changed some output transistors but im still not getting any audio. theirs no dc on the speaker terminals

 

[Perry Babin]

What was the statement about the rectifiers?

 

[timwebb]

oh yeah i though i put them in wrong cause the board didnt say. but there is ac coming out the speaker terminal.

 

[Perry Babin]

What sort of AC?

 

[timwebb]

i set my meter to 200ac and played a test tone and it read like 134.3 on ac i did change the output transistors though gut with the right replacement.