Bert's 150 bass filter - Thanks (Oris Horns)

by Tom Russell , Wednesday, March 14, 2007, 22:18 (6246 days ago) @ Rudolf150

Hi Tom,

.............I thought when a filter is inbetween the speaker and the power amplifier,> then this is called passive. And if the filter is between source/preamp> and power amplifier, then this is called active.
Or am I wrong here?

I am just trying understand fully your setup

Thanks,
Rudolf

I usually think of passive as not requiring a power source, such as the RC filter network I am currently using on my bass, while active circuits, such as the Rane crossover I previously used, require power and either plug into the mains or have a battery power source. For example, a passive pre-amp has no active circuitry.

I realize that the term passive pre-amp is a misnomer as it doesn't amp anything. I used it as an example both for clarity and to illustrate the loose terminology that is accepted in audio.

Tom

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