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09-13-2018, 09:58 PM
Hi Guys
Greg, you might be misinterpreting the tube data sheet. The applications they list are exactly that: applications. Your transformer set may use four tubes and have the listed voltage, but if the OT impedance is different , the PT is not capable of the current needed, and/or the drive is less in the amp than on the data sheet, then you get less output.
A pair of KT-88s can be used to get 150W but they only produce 25W in my Studio amp. That is because the amp is only designed to deliver 25W regardless of the tube type plugged in. Similarly, Bogen designed a lot of PA amps that would be mounted in quite variable locations and may not have a constant or recommended load, so they tended to be conservative with power output from a given tube set.
Fifty-five watts through the combo speaker will be a bit blaring, I suspect, but would be much fuller and as loud as you think it should be through larger cabinets and/or through multiple speakers positioned as TUTs and our Speaker Book show, focusing the sound where you are playing.
Greg, you might be misinterpreting the tube data sheet. The applications they list are exactly that: applications. Your transformer set may use four tubes and have the listed voltage, but if the OT impedance is different , the PT is not capable of the current needed, and/or the drive is less in the amp than on the data sheet, then you get less output.
A pair of KT-88s can be used to get 150W but they only produce 25W in my Studio amp. That is because the amp is only designed to deliver 25W regardless of the tube type plugged in. Similarly, Bogen designed a lot of PA amps that would be mounted in quite variable locations and may not have a constant or recommended load, so they tended to be conservative with power output from a given tube set.
Fifty-five watts through the combo speaker will be a bit blaring, I suspect, but would be much fuller and as loud as you think it should be through larger cabinets and/or through multiple speakers positioned as TUTs and our Speaker Book show, focusing the sound where you are playing.
