"Brian" wrote in message
...
"Ian S" wrote:
"Brian" wrote in message
.. .
I have a BOSE Acoustimass 7 (3 saterlite speakers and bass speaker) I
brought this for surround sound. I have two BOSE VS100 small sized
speakers at the back of the room, near the ceiling.
I read in a article that the frequency range is:
Base module 46Hz to 202Hz at +-2.3dB
Satellites 280Hz to 13.3k Hz at +-10.5 dB
Can someone who has tested these speaker confirm that this is the
frequency range.
There seems to be gaps at
20Hz to 46 Hz
202Hz to 280Hz and
13.3k Hz to 20K Hz.
I recently brought a sub woofer to try and full in the gap at the low
frequency range. The sub woofer is 28Hz to 200Hz.
I can't see anyway of disableing the BOSE bass speaker so that the Sub
Woofer is used.
I have a Surround 5.1 sound decoder in my DVD player and connected the
player to the ampilifer using 6 leads (one for each speaker). In doing
this I was hoping that the subwoofer would get only the low frewuency
sounds. I have since found that the cut off frequency for the sub
woofer filter built into the DVD player is 120K Hz. This leaves a gap
from 120K Hz to 202K Hz.
Another reason for connecting the amplifer with 6 leads was to be able
to play super audio cd's (SA-CD).
Any advice would be most welcome.
First of all, don't panic. While Bose may not represent the pinnacle of
audio technology, it's certainly not nearly as bad as you're being led to
believe. A test of the Bose Accoustimass 5 system some years back did not
display these gaps so I'd be surprised if your system which has one more
cube pair did. You might try leaving your entire Accoustimass system
connected (center, front left and right) and hooking up your sub to the
sub
out from your amp. If you have crossover control for your sub, you could
set
it to cut off frequencies above about 50 herz where the Accoustimass
system
picks up. You may want to play around with placement of your sub and the
Bose woofer to see if you can achieve something that sounds good to you.
If
that simply doesn't work, then there is an active market for your Bose
system on eBay although that may be problematic for you due to location.
Alternatively, set up the Bose system with an inexpensive receiver in
another room where you watch TV or listen to FM, then build a new
surround
system around your sub.
Since you already have a sub, you have quite a few avenues open to you.
Because you have a small room, you may want another satellite system -
I'm
pleased with my Hsu Ventriloquist but then I also have an Hsu sub that
matches it well. An advantage of the Ventriloquist is that it is gives
you
6.1 instead of 5.1. The Hsu allows you, if you want, to connect the
center
rear (sixth speaker) so as to get pseudo 6.1 sound out of 5.1 material.
Good
luck.
Regards Brian
Thanks Ian your advice.
Its good to have an alternate reply for the BOSE system when there are
many against BOSE speakers.
One problem I'll have is getting the sub woofer to work with the BOSE
speakers as my amplifier can either have low frequency sound going to
the sub woofer output or mix the low frequency with the other channels
and have the BOSE bass model filter off the bass.
I would think you'd be best to have as much as possible of the low frequency
sound go directly to your sub woofer. From what you say about your DVD
player, that will be the frequencies below 120 Hz and your sub will be fine
with that. So frequencies above 120 Hz will be going to the other speakers:
front left and right, center and surrounds. The Accoustimass 7 system will
then simply be the front and center speakers. That means the Bose bass
module won't be getting anything below 120 Hz, but I don't think that really
matters.
The sub woofer has a built in filter which will allow me to connect
the higher frequency speakers to the sub woofer. I'm hoping to connect
my Kef C25 speakers to the sub woofer and let the sub woofer's filter
do it's job. I have an A,B speaker switch on the amplifier so I'll be
able to switch between BOSE and Kef speakers.
Regards Brian
I'm not sure I understand where the Kef speakers are coming in. If you are
creating a parallel system to the Bose where both setups use the same sub, I
can't really say how that would work. Whatever you do, my understanding is
that you should avoid splitting up the Bose system to run its individual
components separately. Keep it together as a package (front left, right and
center) or eliminate it entirely from your system.
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