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Old August 29th 07, 07:15 PM posted to uk.rec.audio
Serge Auckland
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Default Quad 606 with a Quad 405


"Arny Krueger" wrote in message
...
"MiNe 109" wrote in message

In article ,
"Arny Krueger" wrote:

"MiNe 109" wrote in message


In article
,

"Arny Krueger" wrote:

Bi-amped has traditionally meant, and means in most
audio circles to this day, active crossover, two power
amps, two-way speaker system.

Hence the term 'passive bi-amping' to distinguish it
from your definition.

There's a whole forest of made-up terms out there for
this sort of weirdness:

vertical bi-amp

horizontal bi-amp

come to mind.


Those are different configurations of passive bi-amping.

A possible case for the passive method is as an
intermediate step for one who wishes to complete the
active system later.

Almost everything is possible in the world of
imagination. Doesn't make many of them anything like a
good idea.


This is one of the good ones.


For the sales guy!

Here's a bad idea:
off-the-shelf electronic crossover to replace a specific
passive crossover.


That might not be any worse than using two power amps with mismatched
gains, which is what the combination that OP mentioned had. Yes, the OP
had been told a tall tale about matched gains, but the relevant facts told
a different story. The amps did not have matched gains. There was more
than enough gain difference to change the basic sound of the Spendors.

OTOH, traditional biamping is becoming a trend, as a
delivered complete engineered speaker/amp system, not a
random collection of parts thrown together by clueless
audiophile dupes and shyster sales hacks.


How are amps from the same maker said to have the same
gain a "random collection of parts"?


You're apparently not following the whole thread, Stephen. Yes, the OP
said that he was told that he had two amps from the same maker that had
the same gain. When we looked at the relevant facts, we found that someone
had been telling him audio fairy stories. The amps don't have matched
gain, no matter what he was told.


The OP was told, apparantly erroneously, by QUAD that the amps had the same
gain. Consequently, they could be used for bi-amping. However, it turns out
that the amps don't have the same gain, but the same sensitivity for full
power, consequently they can't be used for bi-amping unless the more
sensitive (606) is padded down to match the less sensitive (405).

S.


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