[Vintage-Audio] Modern Speaker For Vintage System?

[Phil Lefever]

At 04:24 PM 8/15/02, you wrote:
>What about the other speakers, room dimensions, amplifier specs etc.=
 Running
>flat or pumping it up with an EQ? Loudness compensation? How about the=
 whole
>story Phil.

The full range speakers are either, Polk audio RTA-15's or B&W DM603 S3.
These are run at frequencies above 75 cps when the sub is on. I find
that I often listen to the speakers full range as well. The Polk's have
higher output but the B&W's are clearly more accurate.

The room is about 12 by 20 feet with the speakers along a long wall. I
wish the room layout out the other way but due to a brick fireplace and
a couple doorways I am stuck with what I have. The floor has a deep pile
carpet with a pad and there is a full set of heavy drapes behind the
speakers. The fireplace on the left end wall is fully flanked by book
cases that act as a effective diffuser. I also have a set of home made
copies of "Tube Traps" in the front corners of the room.

Primary amplifiers are Hafler XL-280 MOS-FET amps for both full range
and bridges for the sub. Both these amps have been internally rewired
with some power supply mods. The sub amp is using a toroidal transformer
as I couldn't find a stock piece that allows 220v operation. All the
amps have a separate branch circuit with the sub amp running on it's
own 220V circuit. Other amps are a number of various Dynaco tube or
solid state models or Heathkit W4AM's and a pair of home brew 572 triode
single ended amps.

As for EQ or loudness compensation I run without any most all the time.
The sub balance is adjusted both by ear and with a 1/3 octive RTA. The
active crossover is a homebrewed 12db/octave unit of sometimes an old
Rane (I can't remember the model#) that I have laying around.

My background is in electronics and sound reenforcement. I have also
done some work in a couple recording studios. I play both Cello and
Guitar. My musical interest range from classical to hard rock and
lots of instrumental Jazz. I do even listen to Pink Floyd at times
too ;)

Hope that fills in some of the gaps,

Phil
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Phil Lefever - KB=D8NES			Twin Cities Repeater Club
kb0nes@tcrc.org			Tech Team Co-Chairman
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