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Running Benchmark AHB2 in bridged mode and 4 Ohm Speaker

Does running this amp in bridge mode mean each channel will see half the impedance i.e 2 Ohm each when connected to a 4 Ohm speaker.  If so will this cause a problem when the speaker dips to 3 or 2 ohms?. 

Anyone running Benchmark AHB2 in bridged mode with low impedance speakers?. 
geek101
roberjerman
4,319 posts
 
Yes, bridged amps see half the impedance of the speakers! So the sound quality may suffer. And the amp may run too hot! I don't recommend doing this! Sound quality is always better driving a higher impedance! Better to run two mono amps - one per speaker. Or one channel of each amp into one speaker.
djones51
4,947 posts
 
You would need 2 AHB2 amps, one for each speaker. They can be run in bridged mono to 4 ohm speakers. There is an application note page on Benchmarks site where they did this with PCM IB2S monitors. 
geek101 OP
284 posts
 
@djones51 thanks but the axes of the plot they have are not readable to me. Does the impedence of the speaker ever dip below 4 ohm. This is not clear to me.

https://benchmarkmedia.com/blogs/reviews/ahb2-driving-pmc-ib2s-studio-monitors


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