Traditional biamplification consists of a preamp, an active crossover, and two power amplifiers. I wonder is it possible to use two integrated amplifiers instead of pre & power amplifier combination?
Please see the diagram on attached. The first integrated amplifier (Int.1) will be responsible for preamp task and also high-pass amplifier. And the second integrated amplifier (Int.2) will be responsible for low-pass amplifier.
In addition, the low-pass amplifier (Int.2) should be connected input at the “main-in” channels only or could it be connected to the RCA inputs, i.e., CD, tuner, aux, tape in, etc., in order to use the volume knob on Int.2 as a bass level adjustment?
Please see the diagram on attached. The first integrated amplifier (Int.1) will be responsible for preamp task and also high-pass amplifier. And the second integrated amplifier (Int.2) will be responsible for low-pass amplifier.
In addition, the low-pass amplifier (Int.2) should be connected input at the “main-in” channels only or could it be connected to the RCA inputs, i.e., CD, tuner, aux, tape in, etc., in order to use the volume knob on Int.2 as a bass level adjustment?
So, it’s fine to use line-level inputs of the low-pass amp, am I correct? But, it’s likely there is cascading two preamplifiers. Do I need to concern about something such as distortion, input/output impedance?
I’ve tested my amplifier one: Braun A2. I found there’s no speaker protection if connecting the external amplifier from pre-out channels. There ‘s “Bang” sound to the speakers when turning the amplifier (one) on.
Why did it should have fixed volume? If it’s fixed, is it better to connect to “main-in” channels instead? I think the variable volume of amplifier two could be an advantage as it would allow to adjust low-pass level.
Yes, unless the active crossover has gain adjustment pots, you need gain/level adjustment either on high pass amp or low pass amp to balance the high and low frequencies. And I don't think you need to worry about distortion or impedance mismatch.
You can install a delay turn on speaker relay board to eliminate turn on noise.
Well, in sum, I can use two integrated amplifiers cascading instead of using a preamp and power amps. And, the hi-pass integrated amp would be used as a master volume, while the lo-pass integrated amp would be a bass level control.
However, is it fine if I use the lo-pass integrated amp as a master and the hi-pass integrated amp as a treble-presence control? I mean using the pre-out terminals of the lo-pass amp in lieu of those of the hi-pass amp.
The reason I ask for the possibility to use the lo-pass amp as a master because it is higher quality than the hi-pass amp. They are, in fact, the same series but the lo-pass amp is a higher model—higher power and later released that was being an improved version of the hi-pass amp.
Note: The hi-pass amp is Braun A1 and the lo-pass amp is Braun A2.
However, is it fine if I use the lo-pass integrated amp as a master and the hi-pass integrated amp as a treble-presence control? I mean using the pre-out terminals of the lo-pass amp in lieu of those of the hi-pass amp.
The reason I ask for the possibility to use the lo-pass amp as a master because it is higher quality than the hi-pass amp. They are, in fact, the same series but the lo-pass amp is a higher model—higher power and later released that was being an improved version of the hi-pass amp.
Note: The hi-pass amp is Braun A1 and the lo-pass amp is Braun A2.
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Yes, if I use “pre out” of the hi-pass amp, I must use “main in” of it as well.
But, for the lo-pass amp, is it necessary to go to its “main in”?
To date, I’ve a little bit confusion. Some replies above suggested to go to “line in” i.e. aux, tuner, etc. in lieu of the main in.
It would be appreciated if someone could confirm that the use of volume knob on the secondary integrated amp, it could be eithet lo-pass or hi-pass amplifier, is identical to gain control in power amplifier, or bass level adjustment on the active subwoofer.
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