Federal SS2000 output transistors.

billforbush

Member
I have a SmartSiren that works perfectly except that it seems quieter than it should. I disconnected one 100w speaker and tested the AC voltage across the line - 11 VAC. Is it likely to be the output transistors? And if so, where can I buy new ones? Any help appreciated.
 

MtnMan

Senior Member
The output voltage should be 32 VAC, measured across the blue and brown speaker wires. Try checking it again with both speakers disconnected.

It might be a bad output transistor, but they usually fail with a short or open. It would be an unusual failure mode to produce low output. Replacement is a BUT70W type.
 
OP
OP
billforbush

billforbush

Member
The output voltage should be 32 VAC, measured across the blue and brown speaker wires. Try checking it again with both speakers disconnected.

It might be a bad output transistor, but they usually fail with a short or open. It would be an unusual failure mode to produce low output. Replacement is a BUT70W type.
Thank you. Will do
 

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