(Scott Dorsey) wrote:

Brian nospam@hotmail wrote:
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'm sorry.

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.

Sure. Those are useless numbers... you'll notice that the satellite
and subwoofer are listed with "ranges" that don't even overlap. If
you actually saw a sweep test on this crap, your eyes would bug out.
But those seem reasonable enough numbers for anechoic testing.

Notice the +-10.5 dB tolerances on the satellite test. Isn't that
hilarious? That basically makes the range itself pretty much
meaingless. If you use wide enough tolerances, you can say ANYTHING
has a wide frequency response.

There seems to be gaps at
20Hz to 46 Hz
202Hz to 280Hz and
13.3k Hz to 20K Hz.

There are gaps all over the place. Again, with such wide tolerances
you can't even tell how many there are. The frequency response on these
things basically looks like the Appalachians with really no midrange
to speak of.

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.

And what's the response across that range?

The basic problem with all of these things is that the satellites are
too small to have any real midrange response. Below 1 KC or so they
pretty much fall like a rock and then the subwoofer picks up well below
that. You'll notice there is no bass imaging whatsoever, and that bass
runs basically sound like one note being played over and over. That
is because the bass itself is restricted to a fairly narrow range if
you actually look at the response plot.

Again, ignore the "ranges" because they don't tell anywhere near all
of the story, especially with those wide tolerances.

I can't see anyway of disableing the BOSE bass speaker so that the Sub
Woofer is used.

If you used a real sub with the Acoustimass satellites, you'd have no
midrange at all and things would be even worse.

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).

Basically, these systems are totally worthless junk and they are designed
to look good and sound exciting in the store, not to actually be accurate
to to listen to for the long term. There is no way to make the Acoustimass
system sound anything even remotely close to accurate.

Replacing these with a cheap pair of mid-fi bookshelf speakers will be much
more of an improvement than going to SACD sources ever will.
--scott

Thanks for your comments Kludge
If you want to take a look at the graphs for the test results they can
be found at www.intellexual.net/bose.html

Regards Brian

In article ,
says...


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.

That is correct. Are you surprised? You shouldn't be. What you have
discovered is exactly why many folks don't like Bose speakers. For the
money, you can get much better sound.

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.

I would sell the Bose set up and get a decent set of speakers that does not
have such huge gaps in it's sound reproduction.
-------------
Alex

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.


That is correct. Are you surprised? You shouldn't be. What you have
discovered is exactly why many folks don't like Bose speakers. For the
money, you can get much better sound.


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.


I would sell the Bose set up and get a decent set of speakers that does not
have such huge gaps in it's sound reproduction.

Do all satellite speaker systems with bass module have these frequency gaps?

Dan wrote:

Do all satellite speaker systems with bass module have these frequency
gaps?

Absolutely not!

Like any system or component, there are many different ways of building
a quality system to achieve the desired results. But it takes enough
money to do the proper research and development and buy the right
quality components to avoid a compromised system, such as the Bose.

There have been excellent satellite systems available for many, many
years. M & K, for instance has been building such a system since the 70's.

In article , Dan wrote:
Do all satellite speaker systems with bass module have these frequency gaps?

Most of them do, because most of them have satellites that are just too
small to really cross over seamlessly.

And the ones that _do_ have large enough satellites still usually have to
cross the subwoofer over so high that there is a total lack of bass imaging.
The human ear can't perceive real imaging at 20 Hz, but at 100 Hz it sure
can, and most of the satellite-sub systems have substantial subwoofer output
well above that.

But I don't think ANY of them have as much midrange suckout as the Bose
Acoustimass.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

"Dan" 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.


That is correct. Are you surprised? You shouldn't be. What you have
discovered is exactly why many folks don't like Bose speakers. For the
money, you can get much better sound.
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.


I would sell the Bose set up and get a decent set of speakers that does
not
have such huge gaps in it's sound reproduction.

Do all satellite speaker systems with bass module have these frequency
gaps?

**Some do, though few are as bad as Bose. Any satellite which has published
specs guaranteeing a performance down to around 100Hz (at less than -6dB)
will provide relatively seamless blending with a subwoofer. Obviously, a
lower response than 100Hz is even better. Naturally, the 280Hz response of
the Bose satellites is a joke.


--
Trevor Wilson
www.rageaudio.com.au

Do all satellite speaker systems with bass module have these frequency
gaps?

Actually, most anything with smaller than 4 inch speakers
and a tweeter do, though a seperate tweeter is crutial.

The best midrange speaker on the market that you could
make a one-way speaker with is about 80hz to 16Khz, though
with "flat" response. Yes, it's very pricey.

Still, it doesn't get to 20Khz or down to low speaking
voices, or say a bass guitar(50hz or so), so a 2-way speaker
is pretty much non negotiable.

Joseph Oberlander wrote:

Do all satellite speaker systems with bass module have these frequency
gaps?


Actually, most anything with smaller than 4 inch speakers
and a tweeter do, though a seperate tweeter is crutial.

The best midrange speaker on the market that you could
make a one-way speaker with is about 80hz to 16Khz, though
with "flat" response. Yes, it's very pricey.

Still, it doesn't get to 20Khz or down to low speaking
voices, or say a bass guitar(50hz or so), so a 2-way speaker
is pretty much non negotiable.


The M & K satellite system I had many years ago had 2 midrange speakers
and 2 tweeters in each satellite. And the mids were at least 4 inches if
I recall. They sounded very full even without the matching sub. But add
that and they really rocked. Not your father's Bose.

Joe Sensor wrote:
The M & K satellite system I had many years ago had 2 midrange speakers
and 2 tweeters in each satellite. And the mids were at least 4 inches if
I recall. They sounded very full even without the matching sub. But add
that and they really rocked. Not your father's Bose.

That's the basic point. For the whole satellite-sub system to work, you
need to build satellites that go down low enough to be useful all by
themselves in the first place. That means either somewhat large boxes
(a cubic foot minimum), or very inefficient boxes, or both.

These days efficiency is a non-issue, but everybody seems to want tiny
satellites that blend into the decor. You just can't do that and get
satellites that go down low enough.

In a perfect world, the satellite/sub system would have a very sharp
crossover filter, and cross over around 20 Hz or so. This would make
the sub an actual sub, as opposed to most of the systems out there where
the sub is really just a mono woofer taking over all the bass reproduction
duty. But people don't want satellites big enough to do that and
frankly most people listen to panpotted stereo recordings that have no
bass imaging anyway.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."

Joe Sensor wrote:

The M & K satellite system I had many years ago had 2 midrange speakers
and 2 tweeters in each satellite. And the mids were at least 4 inches if
I recall. They sounded very full even without the matching sub. But add
that and they really rocked. Not your father's Bose.

KEF makes a nearly identical speaker in their KHT line.
It sounds pretty decent, even with 4 inchers in it.

It is simply incredible how any time BOSE is mentioned the threads are
infinitely long. AMAZING what some good propaganda can do to the crowd.
Long live BOSE and their patrons.

"Ozzy 2005" wrote in message
...
It is simply incredible how any time BOSE is mentioned the threads are
infinitely long. AMAZING what some good propaganda can do to the crowd.
Long live BOSE and their patrons.

Why do so many people insist on taking the
extra effort to capitalize all the letters
in "Bose"?

No Spam wrote:
"Ozzy 2005" wrote in message
...

It is simply incredible how any time BOSE is mentioned the threads are
infinitely long. AMAZING what some good propaganda can do to the crowd.
Long live BOSE and their patrons.


Why do so many people insist on taking the
extra effort to capitalize all the letters
in "Bose"?


To bother the trolls.

"No Spam" wrote:

"Ozzy 2005" wrote in message
...
It is simply incredible how any time BOSE is mentioned the threads are
infinitely long. AMAZING what some good propaganda can do to the crowd.
Long live BOSE and their patrons.

Why do so many people insist on taking the
extra effort to capitalize all the letters
in "Bose"?

To emphasize certain words I guess.

Regards Brian

In article ,
Brian wrote:

I have a BOSE Acoustimass 7

Sorry to hear it. How long have you had this problem?

--
Will Brink @ http://www.brinkzone.com/

On 4/14/05 10:05 AM, in article
, "Will Brink"
wrote:


Sorry to hear it. How long have you had this problem?

Ok Will, why'd you add extra NG's to this thread?

Folks, let's check those crosspost headrs and cut 'em back to one NG or so
where folks WANT to read and respond!
Thanks!

In article ,
says...
On 4/14/05 10:05 AM, in article
, "Will Brink"
wrote:


Sorry to hear it. How long have you had this problem?

Ok Will, why'd you add extra NG's to this thread?

Folks, let's check those crosspost headrs and cut 'em back to one NG or so
where folks WANT to read and respond!
Thanks!




And this is an old article that was flaming around here a couple of
weeks ago.
--
I.Care
Address fake
until the SPAM goes away

"SSJVCmag" wrote in message
...
On 4/14/05 10:05 AM, in article
, "Will Brink"
wrote:


Sorry to hear it. How long have you had this problem?

Ok Will, why'd you add extra NG's to this thread?

Folks, let's check those crosspost headrs and cut 'em back to one NG or so
where folks WANT to read and respond!


What say folks from *each* newsgroup want to respond ?

Are you the USENET policeman who assigns which newsgroup people are allowed
to persue threads from ?

geoff

In article ,
SSJVCmag wrote:

On 4/14/05 10:05 AM, in article
, "Will Brink"
wrote:


Sorry to hear it. How long have you had this problem?

Ok Will, why'd you add extra NG's to this thread?

I did no such thing. Who ever I responded to must have.


Folks, let's check those crosspost headrs and cut 'em back to one NG or so
where folks WANT to read and respond!

**** it, I reponded to them. If they cross posted to related groups, I
don't care.

Thanks!




--
Will Brink @ http://www.brinkzone.com/