|lowell||7/30/2018 8:41 PM|
|Fender Bassbreaker 45|
Anyone willing to email me a schematic on this? Fender will not send one. This amp has low Vscreens even with the 1-45W knob at 45W. 300vdc on screens. 400+ on plates. I'm thinking the FET may be bad BUT would prefer to know that the gate voltage is correct and that surrounding voltages are in line.
Otherwise if I need to proceed with no schematic... any suggestions? These voltages are at 45w. Gate voltage seems low to me.
|g1||7/31/2018 12:23 PM|
|What is the max clean power out you can get from it?|
|John G||7/31/2018 2:24 PM|
You may want to read this thread, it my be useful.
|lowell||8/2/2018 2:49 PM|
24.5watts of clean on 45w setting at 1khz 180mv input
John I read that...thanks. Unfortunately there's no screen voltage mentioned pnce the repair was made.
|lowell||8/2/2018 2:52 PM|
|Whoa hold up... Had the impedance switch on 16 and my dummy load is 8ohms. Got 40watts!!! So I guess its working fine.|
|g1||8/2/2018 6:20 PM|
|If that's a nice clean 40W, then it's probably around 45 with the THD it's spec'd at.|
If the wattage control seems functional, then it's probably OK.
Was it in for some other issue or was low power the complaint?
|lowell||8/3/2018 9:51 AM|
|Is a bit farty on the low notes. I asked if it wasnt like that when he bought and he said it wasn't. All I can do is say it's putting out the right amount of clean power at this point. IMO it sounds correct... and is a matter of tone settings and gain structure. And yes I get 60watts if I go into clipping. So 45watts is a peice of cake.|
I set my sig generator at 300hz and the amp clips way earlier so it seems there's more gain in the low mids. However I was still able to get 40watts clean at 300hz.