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Old 8th December 2008, 12:21 AM   #1
aldovan is offline aldovan  Brazil
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Join Date: Jul 2005
Location: Curitiba
Default Philips AD3800AM and AD9710AM clones

Dear friends

I have interest in build Philips AD3800AM and AD9710AM speakers clones.
The impedance for this speakers is 800 ohms.
But I no have the voice coil resistance information.
Anyone have this information or can to measure the voice coil resistance for help me ?
The specifications for this speakers is fine, too.


Thanks,

Aldovan
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Old 8th December 2008, 07:53 PM   #2
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Hi there

As I have those in my possesion, I took a quick multimeter reading for you:
AD 3800AM : 650 Ohm 16 mH and another one reads 600 Ohm 22 mH

AD 9710AM : 660 Ohm 27 mH and another one reads 680 Ohm 30 mH

All are dated 1959

Those coils are made from really thin wire, I hope you will succeed..
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Mark
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Old 8th December 2008, 10:12 PM   #3
aldovan is offline aldovan  Brazil
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Join Date: Jul 2005
Location: Curitiba
Default Philips AD3800AM and AD9710AM clones

Mark

Thanks for your information.
It is very important.
Make this coils do not is easy. Is a true adventure.

Aldovan

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