[time-nuts] COMPLETELY off topic - but I know you'll read it anyway.

[Bruce Griffiths]

Jim Palfreyman wrote:
> OK I have an interesting but simple problem that has nothing to do with
> time. But I'm sure someone on this list will know. And besides I can't be
> stuffed finding another list with such a good S/N ratio.
>
> In my spare time I play in a band.
>
> I have a 1000W amplifier that can be either two 500W stereo channels or a
> single 1000W mono running in "bridged" mode. (Basically one channel
> amplifies the upper part of the sine curve and the other the lower.)
>
>   
Thats not an accurate description of how bridged amplifiers work.
The load is connected between the 2 outputs which are 180 degrees out of 
phase.
This doubles the available voltage swing across the load.
For a given load, this quadruples the power (provided neither of the 
amplifiers goes into current limit).

> The amp can drive speakers down to 4 ohms.
>
>   
4 ohms in bridged mode?
Or 4 ohms in single ended mode?
> I have two 8 ohm speakers.
>
> The source is mono.
>
> Do I run each 8 ohm speaker on its own 500W channel?
>
> or
>
> Do I run in bridged mode and put the two speakers in parallel onto the 1000W
> amplifier?
>
> Any takers?
>
> Regards,
>
> Jim
>   

Bruce