Recharge motors on 802s?

**robertbartsch** · May 29th, 2009, 07:10 PM

I bought a pair of these compression drivers from FleaBay recently; they have blown frams, so I am going to recharge the motors, since I do not know their history.

Is this fairly typical or do most elect not to recharge and take a chance?

I've heard that alnicos dont loose power unless they were (1) overpowered which is rare for a HF compression driver, or (2) the motors (cores) have been dropped.

Thx.

**gearfreak** · May 29th, 2009, 07:42 PM

If sending to GPA to do the phragms, they will recharge for free. (IIRC, as of 10/2008).

Thus, it shouldn't be an economic decision.

Is the worry that the recharge would degrade performance in some respect?

**bowtie427ss** · May 30th, 2009, 10:16 AM

Not sure this would be an issue with a GPA recharge, or with a compression driver, but i've heard of and actually encountered one woofer that had reversed magnet polarity after the reconer recharged it. Important to note that this was NOT a GPA rebuild.

**Audio_by_Goodwill** · May 30th, 2009, 11:52 AM

Originally Posted by bowtie427ss

Not sure this would be an issue with a GPA recharge, or with a compression driver, but i've heard of and actually encountered one woofer that had reversed magnet polarity after the reconer recharged it. Important to note that this was NOT a GPA rebuild.

That just requires you to swap the connection polarity, right?

**bowtie427ss** · May 30th, 2009, 05:16 PM

That just requires you to swap the connection polarity, right?

Simple as that with a woofer, but i'm not sure if there would be other factors to consider with a horn driver or not. Hopefully someone far more knowledgeable than i will chime in.