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.

Regards Brian