[MvonB]

http://www.eminent-tech.com/RWbrochure.htm

[Arny Krueger]

"MvonB" wrote in message


http://www.eminent-tech.com/RWbrochure.htm

The rated

Maximum acoustic output 110dB between 0 and 30Hz.

This spec is kinda ambigious, but the device were capable of 120 dB, you'd
think they would set the spec that high.

120 dB below 20 Hz is something most have experienced by opening car windows
at say 70 mph. Not only won't it kill you, you might not even think it is
all that loud. I won't even activate "the brown note" effect.

Note that true subwoofer fanciers like Nousaine rate woofers in terms of
output on the order of 120 dB @ 10 Hz.

BTW Maggie, nice job of making yourself look like a fool on AAPLS.

[John Atkinson]

Arny Krueger wrote:
"MvonB" wrote in message

http://www.eminent-tech.com/RWbrochure.htm

Note that true subwoofer fanciers like Nousaine rate woofers
in terms of output on the order of 120 dB @ 10 Hz.

The Eminent can do that easily. See, for example,
http://blog.stereophile.com/cedia2006/091906soundfield/
and
http://blog.stereophile.com/cedia2006/091606thigpen/

In the first photo, the subwoofer is outputting 8Hz at
115dB spl in the room next door.

John Atkinson
Editor, Stereophile

[Arny Krueger]

"John Atkinson" wrote
in message
ups.com
Arny Krueger wrote:
"MvonB" wrote in message

http://www.eminent-tech.com/RWbrochure.htm

Note that true subwoofer fanciers like Nousaine rate
woofers in terms of output on the order of 120 dB @ 10
Hz.

The Eminent can do that easily. See, for example,
http://blog.stereophile.com/cedia2006/091906soundfield/
and
http://blog.stereophile.com/cedia2006/091606thigpen/

In the first photo, the subwoofer is outputting 8Hz at
115dB spl in the room next door.

Trivial observation: 115 120.

Second observation, delivering 115 dB to a hotel room doesn't take as much
effort as delivering 120 dB to a good-sized listening room.

Third observation, distortion is only speced at a relatively weak 90 dB
SPL.

[John Atkinson]

Arny Krueger wrote:
"John Atkinson" wrote
in message
ups.com
Arny Krueger wrote:
"MvonB" wrote in message

http://www.eminent-tech.com/RWbrochure.htm

Note that true subwoofer fanciers like Nousaine rate
woofers in terms of output on the order of 120 dB @ 10
Hz.

The Eminent can do that easily. See, for example,
http://blog.stereophile.com/cedia2006/091906soundfield/
and
http://blog.stereophile.com/cedia2006/091606thigpen/

In the first photo, the subwoofer is outputting 8Hz at
115dB spl in the room next door.

Trivial observation: 115 120.

Correct, but that was the level in the other room, according to a
spectrum analyzer. I also witnessed a IHz tone at the same level,
but I found it compeletly inaudible. Bandwidth extended up to
25-30Hz, so this is a a true_sub_woofer.

Second observation, delivering 115 dB to a hotel room doesn't
take as much effort as delivering 120 dB to a good-sized
listening room.

True, but the room the Eminent subwoofer was operating into
was neither small nor a hotel bedroom. It was ameeting room
measuring around 15' x 25', if I remember correctly.

Third observation, distortion is only speced at a relatively
weak 90 dB SPL.

I couldn't hear any harmonics along with the 8Hz tone,
though there may have been some masking from the
noise of the furnishings/walls/ceiling rattling :-)

Harmonics visible on the spectrum analyzer were in the
few per cent.

And remember, this is with _one_ drive-unit and 30W
of amplification. No reason (other than financial) to
use multiple units.

What did you think of this subwoofer when you heard
it, Mr. Krueger?

John Atkinson
Editor, Stereophile

[MvonB]

"John Atkinson" wrote in message
ps.com...

Arny Krueger wrote:
"John Atkinson" wrote
in message
ups.com
Arny Krueger wrote:
"MvonB" wrote in message

http://www.eminent-tech.com/RWbrochure.htm

Note that true subwoofer fanciers like Nousaine rate
woofers in terms of output on the order of 120 dB @ 10
Hz.

The Eminent can do that easily. See, for example,
http://blog.stereophile.com/cedia2006/091906soundfield/
and
http://blog.stereophile.com/cedia2006/091606thigpen/

In the first photo, the subwoofer is outputting 8Hz at
115dB spl in the room next door.

Trivial observation: 115 120.

Correct, but that was the level in the other room, according to a
spectrum analyzer. I also witnessed a IHz tone at the same level,
but I found it compeletly inaudible. Bandwidth extended up to
25-30Hz, so this is a a true_sub_woofer.

Second observation, delivering 115 dB to a hotel room doesn't
take as much effort as delivering 120 dB to a good-sized
listening room.

True, but the room the Eminent subwoofer was operating into
was neither small nor a hotel bedroom. It was ameeting room
measuring around 15' x 25', if I remember correctly.

Third observation, distortion is only speced at a relatively
weak 90 dB SPL.

I couldn't hear any harmonics along with the 8Hz tone,
though there may have been some masking from the
noise of the furnishings/walls/ceiling rattling :-)

Harmonics visible on the spectrum analyzer were in the
few per cent.

And remember, this is with _one_ drive-unit and 30W
of amplification. No reason (other than financial) to
use multiple units.

What did you think of this subwoofer when you heard
it, Mr. Krueger?


He was preoccupied with chromosomes and missed it but I'm sure he'll ask
Nousaine how it sounded so he can convey his opinion of it to the rest of
us.

Cheers,

Margaret

[Arny Krueger]

"John Atkinson" wrote
in message
ps.com
Arny Krueger wrote:
"John Atkinson" wrote
in message
ups.com
Arny Krueger wrote:
"MvonB" wrote in message

http://www.eminent-tech.com/RWbrochure.htm

Note that true subwoofer fanciers like Nousaine rate
woofers in terms of output on the order of 120 dB @ 10
Hz.

The Eminent can do that easily. See, for example,
http://blog.stereophile.com/cedia2006/091906soundfield/
and
http://blog.stereophile.com/cedia2006/091606thigpen/

In the first photo, the subwoofer is outputting 8Hz at
115dB spl in the room next door.

Trivial observation: 115 120.

Correct, but that was the level in the other room,
according to a spectrum analyzer. I also witnessed a IHz
tone at the same level, but I found it compeletly
inaudible.

When reproduced with sufficient acoustic power, not heard but definately
sensed.

Bandwidth extended up to 25-30Hz, so this is a
a true_sub_woofer.

Agreed - and this is a consequence of the method of operation.

Second observation, delivering 115 dB to a hotel room
doesn't take as much effort as delivering 120 dB to a
good-sized listening room.

True, but the room the Eminent subwoofer was operating
into
was neither small nor a hotel bedroom. It was ameeting
room measuring around 15' x 25', if I remember correctly.

Agreed that 15 x 25 is a decent-sized listening room. It is like mine if you
further specify a 9 foot ceiling.

Third observation, distortion is only speced at a
relatively weak 90 dB SPL.

I couldn't hear any harmonics along with the 8Hz tone,
though there may have been some masking from the
noise of the furnishings/walls/ceiling rattling :-)

Agreed, those are natural consequences of deep bass at a loud enough level.

Harmonics visible on the spectrum analyzer were in the
few per cent.

If it can do say 120 dB @ 10% THD, why don't they say it?

And remember, this is with _one_ drive-unit and 30W
of amplification. No reason (other than financial) to
use multiple units.

The 30 watt number is misleading. This is a speaker driver that works on the
principle of modulation. I see no specification for the power input to the
motor that provides the airflow that is modulated.

What did you think of this subwoofer when you heard
it, Mr. Krueger?

I didn't have the pleasure. Was it demoed at HE2005?

[George M. Middius]

John Atkinson said:

What did you think of this subwoofer when you heard
it, Mr. Krueger?

What an outrageous attack, John. Have you no pathos?




--

Krooscience: The antidote to education, experience, and excellence.

[George M. Middius]

Into the back pages of the "debating trade" manual we go.

The Eminent can do that easily. See, for example,
http://blog.stereophile.com/cedia2006/091906soundfield/
and
http://blog.stereophile.com/cedia2006/091606thigpen/

In the first photo, the subwoofer is outputting 8Hz at
115dB spl in the room next door.

Trivial observation

Chapter 58, "Last Ditch Measures to Provoke an Argument out of Nothing",
gives us the following guideline:

"The Debating Trade warrior, failing to find the tiniest shadow of an error,
makes trivial observations* in hopes of bestirring his enemy into an angry
tirade at his ****fulness."



__________________________

* A "trivial observation" is an argumentative or obstreperous post that is
designed to incite exasperation in humans, who otherwise foolishly attempt
to communicate in a constructive manner.






--

Krooscience: The antidote to education, experience, and excellence.

[Walt]

MvonB wrote:

Subwoofers have been capable of killing people for decades. Just drop
one on the listener from a height of 50 feet.


//Walt