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Help with testing cab.


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I recently had my amp die on me at a gig, Luckily there was another amp, that I plugged into my cab (with a different cable), and all was fine.

The amp that died was an Ashdown ABM 600. I sent it to Ashdown, and Dave Green at Ashdown said the power amp had blown & that it was something external that caused tit to blow - I.E the Cable or the Cab. 

I did a resistance test with a multimeter for the cable and as far as I can see everything is ok.

I'm not sure how I test the cab, but given that the other amp I plugged in that night was fine, I'm inclined to think the cab is ok. My ABM was plugged in with a speakon when it died, and the other amp was with a 1/4 inch - might be important.

Anyway, the ABM is fixed, but I'm worried about plugging in to my cab in case it blows again. Is there any way to test the cab to know its electrically sound?

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Moving the cable may reveal if it is defect. Zero resistance is doable with a single strain, therefore the reading is not telling you anything else than that some part of the cable or the connectors are making contact. 300 W through a defective cable may ruin your amp. I think a new cable wouldn't be a mission impossible.

 

You can use a 9 V battery to try the cab (and find its phase). Other than that you should open the cab and check if all cables are firmly attached.

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