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| Date: |
November 22, 2009 at 07:18:43 |
| From: |
Chris, [cpc2-renf4-0-0-cust740.renf.cable.ntl.com] |
| Subject: |
Voice Could Inductance |
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Hey all looking for some help. I'm trying to design a cross over network. But I need the voice coil inductance (Le) in order to complete the calculation.
I am using a Celestion Truvox 1225 subwoofer with the following specs:
Nominal diameter (‘’) 12
Power rating (W) 250
X Max (mm) 2.35
f/pl (mm) 8
coil (mm) 12.7
Nominal impedance (O) 8
Sensitivity (dB) 97
Voice coil diameter (‘’) 2½
Surround Material Cloth - Sealed
Magnet type Ceramic
Magnet assembly flux (T) 1.2
Magnet weight (oz) 42
Chassis type Pressed Steel
Cone material Kevlar loaded paper
and Theille Small Parameters:
Mmt (g) 46.5
Qms 6.70
Qes 0.54
Qts 0.50
Re (Ù) 5.13
D (m) 0.26
Vas (L) 55.0
Magnet assembly flux-
1.20(T)
BI (Tm) 13.2
Cms (mm/N) 0.2
RMS (kg/s) 2.8
Xmax (mm) 2.4
f/p (mm) 8.0
coil (mm) 12.7
Any way I could work out the voice coil inductance from any of these? Google isn't giving much help unfortunately.
Thanks in advance for your help.
Moderated By: brian@diysubwoofers.org
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