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.
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@georgehifi 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. Thank you. |
ishkabibil
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. http://www.av2day.com/wp-content/uploads/2014/05/biamp2.jpg Cheers George |
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??? |
ishkabibil
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. Cheers George |