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Old 10th June 2002, 09:38 PM   #1
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Default determining unlisted parameters

Is it possible to find the Le --mH of a driver without manuf.listing it,if so how?Proper xover design without it seems impossible.
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Old 11th June 2002, 03:36 AM   #2
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Other known as voice coil inductance
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Old 12th June 2002, 11:28 PM   #3
Wizard of Kelts
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Just for the heck of it, do you have a specific driver in mind? Maybe we can dig up the inductance spec.
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Old 13th June 2002, 12:40 AM   #4
e96mlo is offline e96mlo  Sweden
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You can measure the inductance with a LCR-meter.
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Old 16th June 2002, 08:55 PM   #5
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Thanks guys but mcm finally emailed me with the .33 mh le spec.The driver I was inquiring about was the 55-1200 a 4.5"poly paper woofer .Impresive 94 db ef.and check out this response.All for under $10.00usd.
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Old 18th June 2002, 11:40 PM   #6
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That is impressive. For $10, you can't go wrong.

Somebody should clue MCM in about their website. I was getting catalogs from both Parts Express and MCM years ago, and considered them pretty much equal. Parts Express website kills MCM's website though-heck, you can barely even see pictures of the speakers. All I saw was a listing with order numbers.
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Old 19th June 2002, 01:00 AM   #7
Variac is offline Variac  United States
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Default Excessive parameters

I have the opposite problem:

I bought these Selenium 15" woofers and am working with them in WinISD but the program wants a parameter: Le

The manufacturer lists:
Le at Fs
Le @ 1 khz
Le @ 20 kz

These are in mH if that helps . So since Win ISD only wants one Le which one do I use?

Thanks,
MArk
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Old 19th June 2002, 03:13 AM   #8
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Quote:
Originally posted by ttvonau
Thanks guys but mcm finally emailed me with the .33 mh le spec.The driver I was inquiring about was the 55-1200 a 4.5"poly paper woofer .Impresive 94 db ef.and check out this response.All for under $10.00usd.
Looks like an interesting speaker. Who makes it?

Glenn
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Old 19th June 2002, 03:46 AM   #9
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Mcm electronics-55-1200 http://www.mcmelectronics.com/Profil...gistered.jhtml
Check out cheap mcm tower in these forums to see what they can do.
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Old 19th June 2002, 03:57 AM   #10
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Quote:
Originally posted by ttvonau
Mcm electronics-55-1200 http://www.mcmelectronics.com/Profil...gistered.jhtml
Check out cheap mcm tower in these forums to see what they can do.
Thanks tt.

Glenn
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