Hoping Enzo or someone else can give me an opinion...
I was playing electric bass into channel 2 on my Peavey KB3 keyboard amp (60 watt), and was using an ART Tube MP pre-amp to boost the input signal. I had the "Level", "Low" and "High" controls all set to about the 12-o'clock position. At some point, I suddenly lost all bass output from the coaxial speaker - - it sounded like I was only getting tweeter sounds. Although I had not been playing at a high volume, I assumed I had just blown the woofer portion of the coaxial speaker:
And so I disconnected the ART Tube MP, plugged my bass guitar directly into channel 2, and played around with the channel 2 controls. I noticed that I DO still have normal-sounding bass sound, but only if the "Low" tone control is set to the 4:00 position or higher; below 4:00 I get no bass response. The channel 2 "Level" and "High" controls work normally. Channels 1 and 3 work normally.
Do you think I "fried" something in the channel2 low tone control circuit? If so, what is the most likely part? Here is a schematic of the channel 2 pre-amp:
and here is the spec for channels 1 & 2:
This amp has been used very lightly, and has never left my basement.
Appreciate your input!!
This forum is for talking about Peavey keyboard amplifiers.
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