Philips AD3800AM and AD9710AM clones

[aldovan]

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

[markanica]

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..

[aldovan]

Mark

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

Aldovan