- ----- Original Message ----- From: To: Cc: "Harp-L" Sent: Friday, July 05, 2002 8:35 PM
> Hi Bob please explain this point in a little more > detail. The jargon is a little hard for this reformed > acoustic player who is now jamming on a RI59BM. > > "What most people > don't know is that unlike the majority of Fender tube > amps which have what's > called passive tone controls (which means turning the > controls all the way > up is actually at flat response from the factory and all > you're doing is > cutting and nothing else)," > > What do you mean by cutting and nothing else? > > Thanks for the education. > > Doc >
Hi Doc, With amps with passive tone controls, the amps is coming out of the factory with a preshaped sound, and so when you turn all the tone controls ALL the way up, you're at flat response. By cutting, you're erasing a particular setting, so in other words, you're never adding anything, you can only subtract. So if you crank the bass, for example, you're setting it up at flat response.
With what's called active, it works opposite, where anything either side of half way, you're actually adding or subtracting for real. Many British amps like Marshalls (except in the early years of the JTM45) and ALL solid state amps, keyboard amps and PA's tone controls work in this fashion.
Hope this helps!
Sincerely, Barbeque Bob Maglinte Boston, MA
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