Yes. The manual states that, for mono use, "...you will need to feed both input jacks with identical signals from a 'Y' connector. The speaker leads must be connected to the two outer terminals only".
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This amp is said to have
8-ohm FTC rated power/ch251W
4-ohm FTC rated power/ch450W
2-ohm dynamic power/ch500W
Why would you need more power for a pair of Boston A200’s?
As by bridging it, that’s all you’ll get more watts in a P.A. sense, everything else will take a hit sound quality wise.
I would add if using those amplifiers 'bridged to mono' is confusing... You should not do it. I agree with others writing you gain nothing and risk a lot.
Most amplifiers stable into 4 ohm as a stereo amplifier are NOT suitable for use with 4 ohm speakers when 'bridged'. Period.I have no idea if the op speakers are actually 4 ohm? Does the op know???
I forgot to ad in my last post.
If you have two of these stereo amps already, this vertical bi-amping arrangement, will give you the best sound, forget bridging.
I am not in possesion of 2 amps but may have an opportunity to land a second one for a friend or perhaps keep for myself if to bridge...given yours and Elizabeth's post I will pass on bridging. I am really satisfied with my sound. If I looked at my components I should probably if anything consider my delivery of music...I am a streamer using Bluetooth.....rblink Arcam....should go network..or ethernet cable....
If I had the A400's which are bi ampable I would consider for sure your passive diagram sent. I have a screenshot saved.
Soundcraftsman used to make an external bridging circuit called the “auto Bridge”. It would do what your asking if the amps are stable. Remember if bridged the resistance drops by a factor of 2 and your amps better have high dampening factor for it to work well and not color the sound too much. It will color the sound though.