In article , Bob Latham
wrote:
In article , Eiron
wrote:
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.

You are both correct from a simple electrical point of view it is quite
pointless. However, I might point out that rightly or wrongly, probably
a substantial majority of people with an interest in Hi-Fi would say
that Bi-amped systems sound better

Where have you seen any figures to support the assertion that the
"majority" would say this? And would it mean more than, "The magazines keep
saying it does"? :-)


and indeed to be "pointless" the amplifiers would have to suffer zero
load issues.

I know, you think the majority are fools - fair enough.

I can't speak for either Dave or Eiron. However I don't think those who
have the above belief are "fools".

Firstly, there are circumstances where bi-amping can change the results for
simple engineering reasons. This thread threw up an example. The amps have
different gains, thus - unless corrected - altering the frequency response
of the system. The result being an expensive and inflexible 'tone control'.

Secondly, people can easily believe all kinds of things if they base their
ideas on what magazines tell them, and/or 'listening tests' that aren't
carried out in a way that might lead to a reliable result. Trivially easy
to mislead youself. No need to be a "fool". Just someone who accepts what
magazines ("experts") say and don't have any idea how many ways there are
for a listening test to give a misleading or worthless result.

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.audiomisc.co.uk/index.html
Armstrong Audio http://www.audiomisc.co.uk/Armstrong/armstrong.html