Sansui re-purposed

One of the problems associated with speaker systems, for audiophiles, is the crossover network.
The crossover network is an eletronic circuit that determines the frquency dividing point between the horn and woofer. My system was design with a 800Hz crossover point. All frequencies above 800Hz go to the horn, and all frequencies belo, to the woofer.

Some have overcome this issue by employing a bi-amp system. Instead of installing an electronic network with a knob to vary the crossover point, two amplifiers are used. One amp is for the horns and one for the woofers. Both amps are stereo.

I gave some thought to this arrangement. I added the Sansui to the system and ran the Tape Record output of the Pioneer to the Aux input of the Sansui. This works. I can hook up the Sansui to the horns and the Pioneer to the woofers.

This still leaves the question of how to implement equalization. In lieu of a wiring scheme, I can get two identical equalizers, one for each amp. I don't need to alter the input to the speakers, but the input to the amplifiers, hence two equalizers. This will allow me to adjust the frequency response to compensate for room acoustics.

It is at this point that the combined receiver/amplifier becomes a disadvantage.


An alternative to running the Tape Record output from the Pioneer to the Sansui Aux input is using signal splitter cables. Example: the turntable can be connected to both amps by using an RCA phono  connector cable, split on one end. Two pairs of connectors on one end allows running the signal to more than one device.
The Pioneer combined receiver/amplifier becomes a disadvantage at this point since the tuner is internally routed to the Pioneer amp. The biggest advantage of the Pioneer combination is the use of the remote control to program the receiver's tuner, among other functions.

The equalizer monitors the input to the amp. his means the tuner is not subject to equalization. Only those signals that originate outside the unit can be monitored. The Sansui has an external, Sony tuner, hence can be monitored and equalized.

I could route the Sony tuner' output to one of the Pioneers inputs but will lose the automation and remote control.

The ideal situation would be two sets of identical or compatible tuners and amplifiers.

The equalization is most enjoyed when playing vinyl LP records.

The tentative plan will allow me to run the Pioneer's output to the Sansui. I can run all extrnal inputs though an equalizer before the input to the Pioneer amplifier.
I won't have radio equaization, but that is acceptable since most of my listening for enjoyment comes from other sources of input


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