Good evening guys, I have a question, I own this Italian amplifier, audioqueest aq190mk2 ( the series before the qmoss steg series) , this amplifier does not go in mono, there is no selector switch, and neither does the output silkscreen with the mono inscription.
Like the orion series it was sold with a phase shifter, one input was shifted 180 degrees, and so you could bridge it.
I saw a couple of “universal” circuits on the net as btl , using tl072 op-amps, has anyone made a homemade phase shifter for old school amps, which needed this?
thank you very much
Like the orion series it was sold with a phase shifter, one input was shifted 180 degrees, and so you could bridge it.
I saw a couple of “universal” circuits on the net as btl , using tl072 op-amps, has anyone made a homemade phase shifter for old school amps, which needed this?
thank you very much
Is it worth the effort?
The simplest way is to use a ground loop isolator and rewire one channel, shield to center conductor....
There are two on my site but they are in Flash format. One requires that you build a power supply, the other is for use in a DIN connector (photos in the following folder) using the amp's internal ±15v for the supply.
https://www.bcae1.com/temp/dinbridgingmodule/
The simplest way is to use a ground loop isolator and rewire one channel, shield to center conductor....
There are two on my site but they are in Flash format. One requires that you build a power supply, the other is for use in a DIN connector (photos in the following folder) using the amp's internal ±15v for the supply.
https://www.bcae1.com/temp/dinbridgingmodule/
The reason I asked if it was worth the effort is because bridging is typically to drive a subwoofer but with the dirt-cheap class D amps, it's generally not worth the effort to bridge a non-bridgeable amp. I'm not telling you not to try, especially if you have two of these and want to bridge one left and the other right.