[Carey Carlan]

I'm editing one of my favorite organists and organs.

Right now a soft, flowing reed melody is supported by a bass pedalpoint.
The loudest component frequency in the recording at this point is 16 Hz. I
just hope that somewhere there's an organ enthusiast/audiophile with a
system that can reproduce such a flavor.

[Arny Krueger]

"Carey Carlan" wrote in message

I'm editing one of my favorite organists and organs.

Right now a soft, flowing reed melody is supported by a
bass pedalpoint. The loudest component frequency in the
recording at this point is 16 Hz. I just hope that
somewhere there's an organ enthusiast/audiophile with a
system that can reproduce such a flavor.

I know a number of them in the Detroit area. The usual tools involve
collections of 4 or more 15-18" long-stroke woofers, connected to the
listening room through plenums mounted in the basement and terminated in the
floor of the listening room, usually in a corner. One has the 4 woofers
mounted in 2 minimal-sized boxes, and uses very high power amplifiers and a
lot of equalization to get the desired bass extension. IME it all works.

[H. Schaap]

"Carey Carlan" schreef in bericht
...

The loudest component frequency in the recording at this point is 16 Hz.
I
just hope that somewhere there's an organ enthusiast/audiophile with a
system that can reproduce such a flavor.

In this thread we found some nice speakersthat could do that ;-)
http://www.3daudioinc.com/3db/showthread.php?t=11336

Henk

[Arny Krueger]

"H. Schaap" wrote in message
news:wB5Li.3049$Hv4.157@amstwist00
"Carey Carlan" schreef in bericht
...

The loudest component frequency in the recording at this
point is 16 Hz. I
just hope that somewhere there's an organ
enthusiast/audiophile with a system that can reproduce
such a flavor.

In this thread we found some nice speakersthat could do
that ;-)
http://www.3daudioinc.com/3db/showthread.php?t=11336

Sad to say, the mouths of the horns are way undersized if an unequalized F3
of 16 Hz or lower is desired.

[Julien BH]

On Sep 27, 8:48 pm, Carey Carlan wrote:
I'm editing one of my favorite organists and organs.

Right now a soft, flowing reed melody is supported by a bass pedalpoint.
The loudest component frequency in the recording at this point is 16 Hz. I
just hope that somewhere there's an organ enthusiast/audiophile with a
system that can reproduce such a flavor.

Wait, R u rLy edithin' ur lifez ?!?!? rofl lolzzz

Sorry couldn't resist

[Carey Carlan]

"Arny Krueger" wrote in
:

In this thread we found some nice speakersthat could do
that ;-)
http://www.3daudioinc.com/3db/showthread.php?t=11336

Sad to say, the mouths of the horns are way undersized if an
unequalized F3 of 16 Hz or lower is desired.

How big would it have to be? 16 Hz wavelength approaches 69 feet.

Sadly, the 32' stop on this organ is electronic (even the 16' pipes had to
bend to fit under the ceiling). The sound is produced by a speaker in
about a 4 foot cabinet (with the whole organ chamber as a resonance
cavity). It has the advantage, however, of being tuned to produce just
those tones. Its distortion components are "part of the sound".

[Arny Krueger]

"Carey Carlan" wrote in message

"Arny Krueger" wrote in
:

In this thread we found some nice speakersthat could do
that ;-)
http://www.3daudioinc.com/3db/showthread.php?t=11336

Sad to say, the mouths of the horns are way undersized
if an unequalized F3 of 16 Hz or lower is desired.

How big would it have to be? 16 Hz wavelength approaches
69 feet.

Quarter wave,comes to mind.

Sadly, the 32' stop on this organ is electronic (even the
16' pipes had to bend to fit under the ceiling). The
sound is produced by a speaker in about a 4 foot cabinet
(with the whole organ chamber as a resonance cavity).

I've seen 16 Hz come out of 4 cubic foot, but there was a lot of power and
lot of equalization in play.

It has the advantage, however, of being tuned to produce
just those tones. Its distortion components are "part of
the sound".

The energy coming out of real world organ pipes is mostly harmonics.

[Chris Hornbeck]

On Sat, 29 Sep 2007 19:36:50 -0400, "Arny Krueger"
wrote:

I've seen 16 Hz come out of 4 cubic foot, but there was a lot of power and
lot of equalization in play.

And, to continue the example, *any* low frequency response
is possible with *any* existing box and driver. Below the
mounted driver's fundamental resonance an electronic
boost at (asymtotically) 12dB per octave down to whatever
desired rolloff can *completely* correct both magnitude and
phase response. Seigfried Linkwitz gives a brilliant single
op-amp stage design on his website (also in the 1980 Speaker
Builder article).

Now, volume/excursion, that's another matter...

Thanks, as always,

Chris Hornbeck

[Arny Krueger]

"Chris Hornbeck" wrote in
message
On Sat, 29 Sep 2007 19:36:50 -0400, "Arny Krueger"
wrote:

I've seen 16 Hz come out of 4 cubic foot, but there was
a lot of power and lot of equalization in play.

And, to continue the example, *any* low frequency response
is possible with *any* existing box and driver. Below the
mounted driver's fundamental resonance an electronic
boost at (asymtotically) 12dB per octave down to whatever
desired rolloff can *completely* correct both magnitude
and
phase response. Seigfried Linkwitz gives a brilliant
single
op-amp stage design on his website (also in the 1980
Speaker
Builder article).

Now, volume/excursion, that's another matter...

I seem to recall that this system was capable of 122+ dB @10 Hz with 10%
THD. Drivers had 1" Xmax.

[Chris Hornbeck]

On Sun, 30 Sep 2007 21:53:27 -0400, "Arny Krueger"
wrote:

I've seen 16 Hz come out of 4 cubic foot, but there was
a lot of power and lot of equalization in play.

Now, volume/excursion, that's another matter...

I seem to recall that this system was capable of 122+ dB @10 Hz with 10%
THD. Drivers had 1" Xmax.

Yikes! My best "yeah, it's cold, and it's deep too" story is my
experience playing with the Nearfield Acoustics system that stopped
here in Little Rock on its way back from the 2001 CES. They were shown
on both sides of the creek, and the bigger setup stopped here at a
wealthier-than-me-fersure-and-possible-purchaser's) house, where I got
to experiment with the crossover networks for several weeks.

At the end of the stopover Craig, who'd flown me to the show as a
part of his group and given me exhibitor passes and carte blanche,
got ****ed and never spoke to me again. I still wonder why, but
that's life.

Anywho... the woofers (and this is for a home audio system!)
consisted of four pairs of 18 inch long-excursion woofers mounted
in push-push across four maybe 30" Corian tubes. The driver
fundamental resonances, in box, were above their operating
range, and electronically corrected.

IMO, perhaps biased, but there it is, these speakers made the
big Wilson's and anything else at the show look weak.

And they only cost $70,000! Only a little more than my house. Arf.

Thanks, as always,

Chris Hornbeck

[Arny Krueger]

"Chris Hornbeck" wrote in
message
On Sun, 30 Sep 2007 21:53:27 -0400, "Arny Krueger"
wrote:

I've seen 16 Hz come out of 4 cubic foot, but there was
a lot of power and lot of equalization in play.

Now, volume/excursion, that's another matter...

I seem to recall that this system was capable of 122+ dB
@10 Hz with 10% THD. Drivers had 1" Xmax.

Anywho... the woofers (and this is for a home audio
system!) consisted of four pairs of 18 inch
long-excursion woofers mounted
in push-push across four maybe 30" Corian tubes. The
driver fundamental resonances, in box, were above their
operating range, and electronically corrected.

As were these.

IMO, perhaps biased, but there it is, these speakers made
the big Wilson's and anything else at the show look weak.

And they only cost $70,000! Only a little more than my
house. Arf.

Last time I looked, some of the largest displacement (Sd x 2 x Xmax)
subwoofer drivers around are still very much under $1K each. The boxes are
small enough to cut a pair of them from maybe 2 sheets of plywood. I think
the BOM for this project from a few years back was under $3K for a pair.

If you still count your change at the supermarket, there are some very good
high displacement woofers for under $300 each. It might take a few more to
do the same job, and the boxes would have to be somewhat larger to hold
them.

[David Grant]

Right now a soft, flowing reed melody is supported by a bass pedalpoint.
The loudest component frequency in the recording at this point is 16 Hz.
I
just hope that somewhere there's an organ enthusiast/audiophile with a
system that can reproduce such a flavor.

Wait, R u rLy edithin' ur lifez ?!?!? rofl lolzzz

Sorry couldn't resist

Wouldn't you if you could? Everyone has an embarassing moment or two.



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