Woofer 2213 H positive or negative transducer ?

[Woofer]

Richard, what makes it even more difficult for me, is that I have the JBL 4312A Monitors, but cooked both the woofers when an amp went DC. Here in Australia, the 2213H are impossible to source, so I had to get the 2213 but when I realised after listening they were opposite polarities, I just went with the battery test to sort them out. I'm pretty sure the mids are in phase, no phasing nulls that I can notice, so I guess everything in phase now, but after all the extra info, I will eventually run a Phase Checker when I find it.... Thanks heaps for all your input.

[bedrock602]

Hi bedrock,

As promised additional info regarding 2213H polarity.

Richard

Thank you for taking the time to post the revisions. I'll pull the drivers and post my findings here. The only problem is that I replaced the original 2213H woofers with a matching pair since one of the originals had a cracked cone. At the time I was unaware of the polarity issue so did not pay attention to how the woofers were connected to the crossovers. I'll test both originals and replacements for polarity.

[bedrock602]

Certainly looks that way. But this raises the question, does this also apply to the mid drivers? Might have to pull mine out and check, but, another day....

Yes, that's the other issue, how are those mids wired? I'll check them as well.

[Woofer]

Yes, that's the other issue, how are those mids wired? I'll check them as well.

Good luck bedrock. I'm lucky enough to have a JBL SA660 amp, which just happens to have a 'TEST' function switch on the front panel, which tests if anything is out of phase. With one of the woofers reversed, it passes. Mids and tweeters are good.