Magnitizing magnets??

[J M Fahey]

Yes, if it's a "brute force" type of magnetizer, meaning basically a bridge rectifier hooked to mains, a beefy switch and the coil/fixture, then you can vary applied voltage which will control max current , so max field intensity.

Now if it's a modern capacitive discharge type, they generally have their own "intelligent supply" charging capacitors to desired voltage, which can be preset to any desired value and showing it in a digital display, so no need for a variac, it's all done "in house" by a controller similar to an SMPS one.

Can you post a picture of your 24-C ?
Thanks.

PS: I already mentioned a speaker making friend who uses an adjustable brute force magnetizer, he does not need *full* charge because in that case different batches would have different "speaker Q" which in his case must be exactly 1 , so he designs for slightly too strong magnets and then pads them down for uniformity.
His machine has both a large Variac, and the center pole can be set with a large wheel handle , closer or further away, as a fine tuning adjustment.

[jack briggs]

Yes, if it's a "brute force" type of magnetizer, meaning basically a bridge rectifier hooked to mains, a beefy switch and the coil/fixture, then you can vary applied voltage which will control max current , so max field intensity.

Now if it's a modern capacitive discharge type, they generally have their own "intelligent supply" charging capacitors to desired voltage, which can be preset to any desired value and showing it in a digital display, so no need for a variac, it's all done "in house" by a controller similar to an SMPS one.

Can you post a picture of your 24-C ?
Thanks.

PS: I already mentioned a speaker making friend who uses an adjustable brute force magnetizer, he does not need *full* charge because in that case different batches would have different "speaker Q" which in his case must be exactly 1 , so he designs for slightly too strong magnets and then pads them down for uniformity.
His machine has both a large Variac, and the center pole can be set with a large wheel handle , closer or further away, as a fine tuning adjustment.

It's a DC charger - here you go:

[J M Fahey]

Thanks

Yes, it's a brute force magnetizer and from what they state, probably draws between 1200/1500W .

Of course, magnetization cycle is just 1 second (spent mainly letting current build up in such a huge inductor) so it won't really heat up unless used by Seymour Duncan or Di Marzio for production work.

Personally I trust it more than "Passive" magnetizers such as NEO powered fixtures, but of course, to each his own.

My "home" speaker magnetizer draws almost 9000W and can be used for 15/20 speakers in a row until it starts to be felt warm, no big deal for my small scale production needs.