Re: Do Old Bose 901 II's Need an Equalizer, Or Can't We just Turn Up Our Receiver's Bass and Treble
- From: isw <isw@xxxxxxxxxxx>
- Date: Thu, 24 May 2007 20:56:59 -0700
In article <f340au$9if$1@xxxxxxxxxxxxxxxxxxxxxxxxx>,
szekeres@xxxxxxxx (GregS) wrote:
In article <1179988634.665393.124160@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>, Tom
<wanderers@xxxxxxxxx> wrote:
Hello all,
I was lucky enough to inherit a pair of 901 II in Tucson, I am 67,
mainly a lover of classical, and bought my AR2a's unfinished while
stationed at Offutt AFB, NB in 1962. Alas, there was no EQ
I have stayed with the classical since as a listener -- for pure
passion, meditative clarity, and support. But I fell away as an
audiophile, partly because some historical recordings of terribly bad
sound can still be thrilling. E.G, the Berling Symphony Orchestra
playing Bruckner's 9th over the radio in 1944 -- an unfinished
symphony by a dying composer, played in a dying Germany.
The 18 drivers are in perfect shape, and they look as if they were
recently refoamed, All 18 play approximately the same as measured by
the hose-in-the-ear stethoscope.
The orginals did not use foam. They had treated cloth. I would be afraid if
they
actually had foam.
I wrote to Bose, and they answered the next day (see below.) They said
I must find a Series II EQ. Response curves werethe same for I's and
II's, different thereafter. My II speakers are acoustic suspension --
sealed box expecting plenty of amplifier power to move them and
compress the air in the box, while smothering backwaves. I am guessing
they caved to the "no highs, no lows; must be bose" cliche and ported
their boxes to shore up the base while stonewalling the boomy problems
bass reflex can bring. OK, I admit I am guessing on that, but what
else could those nifty tailpipes sticking out of the reflector side be
for?
The I and II had slightly different circuits. The II had more flexibility.
You could actually use ANY of the equalizers, but the more recent ones were
out of control.
Anyway I began looking for a used E in the Q II, but eBay sellers
don't know anything about complex electronic hardware, so it's a crap
shoot.
You will find one for sale (either) occasionally. they should be tested
thoughly.
Things go bad. I really don't trust the Bose equalizers for reliability,
performance, and consistancy..
I want to use these speakers in the home I am building, more
specifcally in the great room (30'L x 20'w x 12' h.)
I think the Bose speakers will have some problems in a venue that large.
They were such an
icon in my youth. I am not going to mod the boxes; I will try the EQ,
and will thoroughly tes repositioning them. However, in looking at the
EQ II,s pics it would appear to control the audio curve just as do
ordinary bass and treble controls on my receiver; why can't I use the
latter and forget the questionably-functioning 30-yr EQ I'll end up
with?
I think they sound best in small rooms, and the closer you are to the
speaker, the better they sound.
Yes. and also the lower the level you play them at, the better they
sound too -- all the way down to zero, at which point they actually
sound nearly as good as any other speaker.
Isaac
.
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