Powersoft M-Force...

[Flint]

Looks interesting, although I suspect the claim of how innovative it
is. Sounds rather similar in concept to what drives a ServoDrive
BT-7, only with an ampflifier built in, no?

http://www.prosoundweb.com/article/powersoft_inspires_loudspeaker_design_with_m-force_technology/

[Denny Strauser]

Post by Flint
Looks interesting, although I suspect the claim of how innovative it
is. Sounds rather similar in concept to what drives a ServoDrive BT-7,
only with an ampflifier built in, no?
http://www.prosoundweb.com/article/powersoft_inspires_loudspeaker_design_with_m-force_technology/

The description in the article is not completely clear ... at least not
to me. The Servodrice is driven by a servo motor which drives a cam/belt
system which drives an aluminum rod attached to the paper cone ... and
only handles 400 watts. More than that can fry the motor or break the
aluminum rod. What I like about the Servodrive speakers is that they can
go down to single digit HZ> Now THAT is a true SUB. I like low
frequencies. Servodrive subs should only be used for frequencies that
paper cones & conventionally designed cabinets cannot reproduce.

I've often wished I had Servodrive cabinets to extend the sound system
beyond what normal subs can do. Bag End makes infinite baffle cabinets
(as opposed to ported cabinets) which can go down to very low
frequencies. But it takes logarithmically more power to do so. I've seen
the Mythbusters TV show where they brought in Meyer subs to bust myths
like "the brown note". They block the ports of the Meyer 850 subs with
heavy foam rubber, making the cabinets infinite baffle cabinets.

That being said, I'd like to hear new M-Force system. M-Force is known
for designing outstanding subs.

- Denny

[Flint]

Post by Denny Strauser

Post by Flint
Looks interesting, although I suspect the claim of how innovative it
is. Sounds rather similar in concept to what drives a ServoDrive BT-7,
only with an ampflifier built in, no?
http://www.prosoundweb.com/article/powersoft_inspires_loudspeaker_design_with_m-force_technology/

The description in the article is not completely clear ... at least
not to me. The Servodrice is driven by a servo motor which drives a
cam/belt system which drives an aluminum rod attached to the paper
cone ... and only handles 400 watts. More than that can fry the motor
or break the aluminum rod. What I like about the Servodrive speakers
is that they can go down to single digit HZ> Now THAT is a true SUB. I
like low frequencies. Servodrive subs should only be used for
frequencies that paper cones & conventionally designed cabinets cannot
reproduce.
I've often wished I had Servodrive cabinets to extend the sound system
beyond what normal subs can do. Bag End makes infinite baffle cabinets
(as opposed to ported cabinets) which can go down to very low
frequencies. But it takes logarithmically more power to do so. I've
seen the Mythbusters TV show where they brought in Meyer subs to bust
myths like "the brown note". They block the ports of the Meyer 850
subs with heavy foam rubber, making the cabinets infinite baffle
cabinets.
That being said, I'd like to hear new M-Force system. M-Force is known
for designing outstanding subs.
- Denny

I dunno if I'd want to bother. I've heard BT-7's and LOVED them
myself, but having to stock/locate replacement parts for them ?!?!
No thanks...

I'll have to just make do with a pair of Coda SC8's.
A buddy of mine in Studio City, CA uses them under an 8 cab Coda ViRay
line array and loves them. I saw them measured under SMAART and we
saw them go down to 29Hz(-3dB) under test conditions, and 31 Hz in
live use. They sound incredibly tight and punchy for an 18" sub
design. Some of those old Oberheim synth settings are just *awesome*
through those.

Having said that, my buddy also wants to give McCauley M421's a try.

[k***@gmail.com]

Post by Flint

Post by Denny Strauser

Post by Flint
Looks interesting, although I suspect the claim of how innovative it
is. Sounds rather similar in concept to what drives a ServoDrive BT-7,
only with an ampflifier built in, no?
http://www.prosoundweb.com/article/powersoft_inspires_loudspeaker_design_with_m-force_technology/

The description in the article is not completely clear ... at least
not to me. The Servodrice is driven by a servo motor which drives a
cam/belt system which drives an aluminum rod attached to the paper
cone ... and only handles 400 watts. More than that can fry the motor
or break the aluminum rod. What I like about the Servodrive speakers
is that they can go down to single digit HZ> Now THAT is a true SUB. I
like low frequencies. Servodrive subs should only be used for
frequencies that paper cones & conventionally designed cabinets cannot
reproduce.
I've often wished I had Servodrive cabinets to extend the sound system
beyond what normal subs can do. Bag End makes infinite baffle cabinets
(as opposed to ported cabinets) which can go down to very low
frequencies. But it takes logarithmically more power to do so. I've
seen the Mythbusters TV show where they brought in Meyer subs to bust
myths like "the brown note". They block the ports of the Meyer 850
subs with heavy foam rubber, making the cabinets infinite baffle
cabinets.
That being said, I'd like to hear new M-Force system. M-Force is known
for designing outstanding subs.
- Denny

I dunno if I'd want to bother. I've heard BT-7's and LOVED them
myself, but having to stock/locate replacement parts for them ?!?!
No thanks...
I'll have to just make do with a pair of Coda SC8's.
A buddy of mine in Studio City, CA uses them under an 8 cab Coda ViRay
line array and loves them. I saw them measured under SMAART and we
saw them go down to 29Hz(-3dB) under test conditions, and 31 Hz in
live use. They sound incredibly tight and punchy for an 18" sub
design. Some of those old Oberheim synth settings are just *awesome*
through those.
Having said that, my buddy also wants to give McCauley M421's a try.
MFB

There are plenty of double 18 subs that go down into the 20s and sound "punchy" by companies like L-Acoustics, D&B, Clair, Rat, etc... I have heard the McCauleys and they go down very low and get very loud doing it. But they really should be used as a "sub sub" that extends below a more traditional double 18" box as they are a bit mushy sounding (as in not "punchy") above 30Hz.

-K