Charles Jenkinson wrote:
I've just bought a couple of lab 12's, 6-ohm version and there's no label on them saying what impedance they are (there are numbers on the back of the cone but it's not 'plain English' if you know what I mean), but I did a DC resistance measure with a cheap digital meter and they measured between about 4.8 and 5.2 ohms, exactly the same as the other pair of 6 ohms drivers I have.
Something doesn't feel right to me with respect to the vendor duty of care here. I know this is DIY and only the OP ultimately owns the solution here, but the manufacturer is responsible for their quality of output, and making the cabs all the same impedance and maintainable. Do they have any Quality Control measurements / pass off sheets - David's resistance check is a good standard test that could/should be on there. Maybe they have the set up space where you can get this all sorted out.
Maybe these drivers didn't make the quality test after production and are sold as B-quality through gray channels?
I don't know, they certainly look genuine. They are from colossusxb as has been mentioned by others, and I previously bought one from him as well. My meter is only a cheap one as well, but also i don't think impedance and DC resistance are quite the same thing, eh.
I've lost the sub-plot (...aghem
) on this thread in general - Has the OP / vendor sorted this out?
2xJ12L (3012HO) switchable/melded (viewtopic.php?f=30&t=18773
2xT30 : viewtopic.php?f=30&t=20386
No sound is better than bad sound.