Question 4 x 125W speakers from 600W Amp (can use high or low impedance modes)

g18c

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Mar 29, 2007
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Dear all, I currently have 2 x 125W 8 ohm speakers wired in parallel back to a 600w per channel amp (the other channel i am using for another zone).

I would like to expand out the coverage with an additional 2 matching speakers, to wire in two parallel pairs:

Code:
    { Speaker 1 -> Speaker 2 }
----|                        |----
    { Speaker 3 -> Speaker 4 }   |
                                 |
---------------------------------|
This would give a total of 500watts being driven by 600watts, into what is seen as 8 ohms (8+8/2) by the amp i believe.

Are there any issues with this, or do I not have enough headroom on the amp?

The specs of speakers and amps are below:
  1. https://pro.bose.com/en_us/products/loudspeakers/background_foreground/designmax/designmax_dm6se.html
  2. https://pro.bose.com/en_us/products/amplifiers/powerspace/powerspace_p2600A.html
It is possible to switch from low-impedance to high-impedance line voltage mode on the speakers and amp, if that were to make any difference.

Thanks in advance for the advice.
 

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