Mcm 55-1465

UNDERSTANDIN · 25th March 2006, 01:52 AM

I'm still trying to find some who has used and measured the
MCM 55-1465.

sreten · 28th March 2006, 04:13 PM

http://users.ece.gatech.edu/~mleach/satspkr/

/sreten.

UNDERSTANDIN · 28th March 2006, 04:31 PM

Thanks for the response. I think that article was published a long time ago. It states that the Vas is 4.80 cubic feet. The current MCM published specs state that the Vas is 7.20 cubic feet. That's a big difference. This is part of what has generated my uncertainty. They both have the same part number, but I think the speaker has been changed.

johngalt47 · 20th September 2010, 12:16 AM

These drivers claim 93 db / 1 watt.

If I put two pairs of them in isobarik configuration (4 drivers total) it seems to me that I can use a linkwitz transform to get them flat to 30 hz with no problem. I almost never listen to music that loud (93db) so it appears I can eat up a lot of power handling using the transform, right? And with that power spread among 4 drivers they should handle it with no sweat...

johngalt47 · 28th January 2012, 05:17 PM

I finally got around to measuring one of these. If anyone is interested I'll post the results.

dumptruck · 13th March 2012, 01:02 AM

Let's see 'em

.

johngalt47 · 13th March 2012, 03:04 PM

Ok...it has two voice coils, 4 ohms each.

This is with both coils in parallel:

Re=3.302
Le=1.203
Fs=23.55
Qts=0.317
Qes=0.356
Qms=2.869
Vas=6.645 cu ft

This is with one coil:

Re=6.373
Le=1.289
Fs=23.55
Qts=0.535
Qes=0.663
Qms=2.767
Vas=7.013 cu ft

bjorno · 13th March 2012, 07:28 PM

FYI:Not isobaric but someone might find this is an useful simulation :

b

dumptruck · 15th March 2012, 06:17 PM

Shucks, I thought you meant frequency response and impedance measurements. Thanks, in any case.

25th March 2006, 01:52 AM	#1
UNDERSTANDIN diyAudio Member Join Date: Apr 2005 Location: New Jersey	Mcm 55-1465 I'm still trying to find some who has used and measured the MCM 55-1465.

20th September 2010, 12:16 AM	#4
johngalt47 diyAudio Member Join Date: Mar 2004 Location: Texas	4 of these in isobarik configuration? These drivers claim 93 db / 1 watt. If I put two pairs of them in isobarik configuration (4 drivers total) it seems to me that I can use a linkwitz transform to get them flat to 30 hz with no problem. I almost never listen to music that loud (93db) so it appears I can eat up a lot of power handling using the transform, right? And with that power spread among 4 drivers they should handle it with no sweat... __________________ Any technology sufficiently advanced is indistinguishable from magic

28th January 2012, 05:17 PM	#5
johngalt47 diyAudio Member Join Date: Mar 2004 Location: Texas	I finally got around to measuring one of these. If anyone is interested I'll post the results. __________________ Any technology sufficiently advanced is indistinguishable from magic

13th March 2012, 03:04 PM	#7
johngalt47 diyAudio Member Join Date: Mar 2004 Location: Texas	Ok...it has two voice coils, 4 ohms each. This is with both coils in parallel: Re=3.302 Le=1.203 Fs=23.55 Qts=0.317 Qes=0.356 Qms=2.869 Vas=6.645 cu ft This is with one coil: Re=6.373 Le=1.289 Fs=23.55 Qts=0.535 Qes=0.663 Qms=2.767 Vas=7.013 cu ft __________________ Any technology sufficiently advanced is indistinguishable from magic

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28th March 2006, 04:13 PM	#2
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	http://users.ece.gatech.edu/~mleach/satspkr/ /sreten.

28th March 2006, 04:31 PM	#3
UNDERSTANDIN diyAudio Member Join Date: Apr 2005 Location: New Jersey	Thanks for the response. I think that article was published a long time ago. It states that the Vas is 4.80 cubic feet. The current MCM published specs state that the Vas is 7.20 cubic feet. That's a big difference. This is part of what has generated my uncertainty. They both have the same part number, but I think the speaker has been changed.

13th March 2012, 01:02 AM	#6
dumptruck diyAudio Member Join Date: May 2010 Location: MN	Let's see 'em .

15th March 2012, 06:17 PM	#9
dumptruck diyAudio Member Join Date: May 2010 Location: MN	Shucks, I thought you meant frequency response and impedance measurements. Thanks, in any case.

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