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previous: GFR Some MESA boogie amps have a simple... -- 2/11/2000 12:57 PM

Re: presence

2/11/2000 6:04 PM
Doc	Re: presence Over what frequency range is the Presence control effective in the typical Marshall or bassman circuit? Back in the early days of hifi, a Presence control was a midband boost, usually centered near 1khz, which was where the female voice is prominent. It was used to effectively bring the singer's voice forward, closer to the listener than the rest of the band or orchestra. I have a circuit in an old audio projects book for a Presence Control, which is basically a passive, attenuative, bandpass circuit, with a maximum 6db boost. (The total signal gets attenuated 6db, in order to be able to raise just the midband up to 6db.) It's effect is to bring the singer's voice apparently forward up to 1/2 the distance between the listener and the background sound source. I suppose the corner frequency and the Q of the circuit could be modified to work in a guitar amp, after knowing what that frequency might be.

2/11/2000 6:04 PM

Doc

Re: presence

Over what frequency range is the Presence control effective in the typical Marshall or bassman circuit?

Back in the early days of hifi, a Presence control was a midband boost, usually centered near 1khz, which was where the female voice is prominent. It was used to effectively bring the singer's voice forward, closer to the listener than the rest of the band or orchestra.

I have a circuit in an old audio projects book for a Presence Control, which is basically a passive, attenuative, bandpass circuit, with a maximum 6db boost. (The total signal gets attenuated 6db, in order to be able to raise just the midband up to 6db.) It's effect is to bring the singer's voice apparently forward up to 1/2 the distance between the listener and the background sound source. I suppose the corner frequency and the Q of the circuit could be modified to work in a guitar amp, after knowing what that frequency might be.

Replies:

moocow I looked at one of my old PSpice re... -- 2/12/2000 12:54 AM