Model 16B transistor subs

tonebells

tonebells

AK Subscriber
Subscriber
I am working on a 16B that has a bad JS3678 (Q9/11) output and a bad SS9306 Q3. I have seen MJ15003/MJ15004 suggested for the outputs, but no confirmation that they worked. acetate used 2N3440 for the SS9305 Q4 with success. 2N3635 is as close as I could find in a PNP to the 2N3440. Any input would be helpful.

Tony
 
Last edited:
Looks like the 2N5416 is working. The amplifier board voltage looked good but no click. I moved on through to the relay board and found an open 750k ohm resistor R39 in the relay supply. Click! Next will be the outputs. I have the set from the other channel in it right now. I will put in the MJ15003/MJ15004 when I get time.

Thanks llwhtt for the info.

Tony
 
Thanks Tony for posting the info, it will help someone else someday. Those 2N5415/6 parts are expensive right now! I looked into ones by Central Semi and they will make them if ordered at a 500 piece minimum. That was too much for me to buffer even selling them at $5 I doubt I'd ever recoup the initial investment. Bummer!!
 
Where has the time gone? I ordered the outputs and on the shelf this one went and now it's three years later. Well i got this down and started working on it but had not notes as they were lost in a hard drive gone bad story. When I started looking for outputs I found my own thread. So I found the MJs put them in and it is now playing.

SJ3678 = MJ15003 NPN

SJ3679 = MJ15004 PNP


SS9305 = 2N3440

SS9306 = 2N5416

Tony
 
You must log in or register to reply here.

Similar threads

tonebells
Another Transistor Sub?
Replies
7
Views
607
tonebells
tonebells
titanstats
SAE transistor replacements..?
Replies
11
Views
5K
MrIgotNomoney
MrIgotNomoney
dnpainting
Transistor Sub Confusion
Replies
7
Views
883
dnpainting
dnpainting
grandpaslab
SX 950 - Low voltage
2
Replies
20
Views
1K
grandpaslab
grandpaslab
moewillis
sx-1280 transistor subs. can someone double check my list?
Replies
10
Views
914
moewillis
moewillis
Back
Top Bottom