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Bruce Weldy wrote: ↑Sun Apr 11, 2021 12:34 pm Went back and tried the 2k ohms setting and it showed .001 - so it definitely uses the scale as it rounded up from .8 at the 200 scale to register .001 at the 2k scale......so, it looks like 8 ohms is correct.

Thought I'd try another test. Put on some music and ran it through the Yamaha. I was able to take it all the way to 10 with no problem. Same song, just switched over to the SLA and it crapped out again.

Pretty sure something is wrong in the cab that's cratering the amp.......looking for suggestions. And once again.....it sounds great at lower volumes.

Bruce Weldy wrote: ↑Sun Apr 11, 2021 12:34 pm Went back and tried the 2k ohms setting and it showed .001 - so it definitely uses the scale as it rounded up from .8 at the 200 scale to register .001 at the 2k scale......so, it looks like 8 ohms is correct.

Seth wrote: ↑Sun Apr 11, 2021 12:50 pm What reading do you get if you test the other speaker?

Bruce Weldy wrote: ↑Sun Apr 11, 2021 1:04 pm

Seth wrote: ↑Sun Apr 11, 2021 12:50 pm What reading do you get if you test the other speaker?

Dammit Seth, would you quit asking intelligent, pertinent questions?


It tested out at 6.5 - so, you are right. So, I guess that means that somehow I'm getting a really low impedance from the speaker array.

Damn, it's gonna' be a PITA to take the amp out so I can get to the high pass filter to be able to test the speakers without the filter engaged to see what they say. Then I can test the tweeter array and see what it is....

Not sure that will happen today . The Masters is finishing up and after three gigs in three nights - I plan to watch/nap through the golf tournament.

Seth, thanks for telling me to do the things I should have already done myself.....I'm usually better than this at trouble shooting. Geez......

Bruce Weldy wrote: ↑Sun Apr 11, 2021 1:04 pm Seth, thanks for telling me to do the things I should have already done myself.....I'm usually better than this at trouble shooting. Geez......

Bill Fitzmaurice wrote: ↑Sun Apr 11, 2021 1:05 pm It does point to a too low impedance load, but I don't see how that could be. I don't recall how you're running it and don't want to search the entire thread, is it bi-amping just the SLA? If it's the tweeter high pass at fault one explanation is if the 30 ohm resistor isn't connected at one end. Without that connected at both ends the filter would present about a 1 ohm load to the amp at 5kHz.

Bill Fitzmaurice wrote: ↑Sun Apr 11, 2021 1:25 pm That picture seems to show the coil connected to the wrong end of the cap.

Bill Fitzmaurice wrote: ↑Sun Apr 11, 2021 1:54 pm I've lost track of who's cab that is, but if the coil is connected to the input side of the cap it's a miracle that it works at all.