Dave xxxx wrote:
On another forum a chap says, he has been told, its ok to use a Quad power
amp (140 watts) with a Quad 405 (100 watts) with the same pre amplifier.


The idea being the 606 powers the bass and the 405 the tweeters.

Speakers being used Spendor s5e

Will this work ?

Quite pointless, as Serge said.

To get any benefit you need to rip out the passive crossover
and put one of these between the preamp and the power amps:
http://www.behringer.com/DCX2496/index.cfm?lang=eng

--
Eiron.