[rec.audio.high-end] B&W 801 Mods

chowkwan%priam.usc.edu@usc.edu (Raymond Chowkwanyun) (02/21/91)

The B+W (that's Bowers & Wilkinson) 801 loudspeaker:
if you listen to classical music recorded in Europe, chances
are it was monitored in the recording studio with this
speaker.  So if we define absolute sound as what the recording
engineer intended, I guess you can't get much closer than
that for those recordings.

It is altogether appropriate that the 801 should have become
widely used as a monitor because the late John Bowers started
making speakers with precisely that aim in mind, being heavily
into recording himself.  I believe the result is a very
natural sounding speaker as opposed to the razor image/soundstage
school of thought.  

Provocative thought: Until you've recorded, you have no idea how
to judge playback equipment.

The original 801 appeared about 1980, I believe and had a reputation
in audiophile circles for muddy sound.  The 801 Series II appeared
around 1985 and immediately received accolades all around (excepting
REG of TAS (that's Robert E. (sorry, don't know his middle name)
Greene of The Absolute SOund)).  Now, let's imitate Barbara Walters
and get down home and personal.  "Why", my friends ask me, "did you
buy this outdated 5 year old piece of junk when much better speakers
have appeared like the Hales Signature and Spendor S100?".  I answer,
"My first really good speaker was a B+W, the DM2, and I always just
kind of wanted to have B+W again for sentimental reasons".  Time
out for sobbing in handkerchief.

B+W 801 Speaker Mod by Van Alstine
===================================

After vowing never to fall for the endless game of
tinkering with my components instead of listening
to the music, I find myself seriously tempted to
try the Van Alstine mod to the Bowers & Wilkinson
801 Series II loudspeaker.  It all sounds
so simple, relocate a reluctance here, snip out
a cap there, disconnect a few wires ...
Has anyone tried this mod?

1) How much time did you spend?

2) How did the sound change after the mod?

After some serious initial sales resistance, 
I may end up making this mod.  But will I
still respect myself the next morning?

Tip for you 801 owners (I got this one
from Ray Sharpe at Arcici): If you experience
boominess in the bass, try putting 125 pounds of lead 
on top of the speaker cabinet.  It'll tame that
boom but you may have to get bigger amps because the
bass is now so damped.  (You can remove the foam
from under the top cover and hide the lead under there.
I find lead ingots more convenient than lead shot which
is difficult to clean up if spilt.  You can lay 3 25lb
ingots behind the midrange/tweeter unit and 1 in front.
You will need 25 lbs of shot to fill in the gaps on either
side of the midrange/tweeter unit.  I recommend a mixture
of no 8 and 9 shot.  If the shot is all the same size,
it can crystallize and produce unwanted resonances.
Cost is 79 cents/lb for ingots, 73cents/lb for shot.)

To further tame the bass boom, put a pair of Arcici
stands under the speaker, weighted down with 50lbs of
gravel.  Pet stores sell gravel for aquariums that 
has been sterilized so you don't get strange creatures
crawling out of your bass port.  Don't use lead under
the speaker, it'll reflect the bass upwards. 
(Warning: this mod requires drilling etc. to install
spikes under the 801.  Believe me, it ain't easy
turning a 100 lb speaker upside down, and right side
up again when it's got lethal spikes sticking out.)

-- Gondor