Running Benchmark AHB2 in bridged mode and 4 Ohm Speaker

I would expect it to be higher. If the rails are 60 volts then the peak volts should approach 120, say 100 Volts with losses, but the current won't support that as 25 amps are needed.

The manual states:
Output voltage: >80Vpp into any load
Output current: 29A peak into 1 ohm, both channels driven

 BTW 18 amps is not an impressive amount of current for modern amp of that size. Should be more like 40 amps. 

I presume you mean current compared to power output not physical size?
The AHB2 is very small and lightweight. IMO the power/current output  - not to mention almost non-existent distortion, super high SNR, efficiency, cool running and (most importantly) resulting purity of sound - are very impressive.
Other than bragging rights, I doubt 40A of current has any advantage in driving practical loudspeaker loads.

With all due respect George, it's not a matter of believing what I want.
Implying higher distortion in bridged mode for the AHB2 is incorrect.
This has been independently verified.
Not sure why you keep insisting on this?

https://www.stereophile.com/content/benchmark-media-systems-ahb2-power-amplifier-measurements

And of course all topologies of amps behave identically when bridged, and no amps are ever specifically designed to be bridged.

Is this sarcasm or what you believe? Can we at least get a little more real, we might just figure out something.

I presume you mean current compared to power output not physical size?
The AHB2 is very small and lightweight. IMO the power/current output - not to mention almost non-existent distortion, super high SNR, efficiency, cool running and (most importantly) resulting purity of sound - are very impressive.
Other than bragging rights, I doubt 40A of current has any advantage in driving practical loudspeaker loads.

I meant of that size power wise, not physically. Now we have a report of 29 amps. This is like the stock market. Or are we just playing poker and raising?

I will bet you that this amp bridged into a 4 ohm load played at 1/3 average power will probably overheat. Where is John Atkinson when we need him? :) 

40 amps of current is needed to produce 40 volts peak (100 watts RMS) across a 1 ohm dip in impedance. If this impedance is reactive the amplifier will be really unhappy.

ps. I did read the review by JA. It's worth a look but doesnt answer all the questions. It's clear to me what the OP should do.  One amp or get busy and truly BiAmp. When are we going to get out of the sandbox?

@tobes 

With all due respect George, it's not a matter of believing what I want.
Implying higher distortion in bridged mode for the AHB2 is incorrect.
This has been independently verified.
Not sure why you keep insisting on this?

https://www.stereophile.com/content/benchmark-media-systems-ahb2-
power-amplifier-measurements 

Thanks for this link. JA knows how to measure things. However he did not precondition the amp bridged at 4 ohms. No biggie here, but the OP is asking about bridging at 4 ohms which I am certain would get very hot. 

My answer to the OP remains the same. Do not bridge this amp into a load that dips below 4 ohms. For that load, the amp will provide more power if not bridged. That analysis does depend on getting some of the facts straight, such as 18 amps vs 29 amps. 

Guys if you really want to do something. Bypass the crossover in your speaker, crossover at line level with simple RC or active crossover, get two amps and let each see their driver DIRECTLY. Put a monster SS on the bottom and some nice tube or class A SS amp on the top. Generally less poweron top because most tweeters are padded down in the crossover. The crossover in a speaker is its weakest link.