EarCandy FAQ Speaker ohm load testing test w/ multimeter

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It is easy test a speaker, ANY SPEAKER for its ohm load with a cheap
multi meter.
To help others who may have the same questions please give us your comments and questions in the description!
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[CrystalsandSpiders]

This isn't an accurate way to test a speakers load. The Ohm rating on a speaker is not DC resistance (which is what a multimeter tests). It is a measurement of Impedance which is like resistance to alternating current at a given frequency. So don't think that a speaker that measures 7ohms with a multimeter is a 7 ohm speaker, because it isn't. You can approximate the load with a multimeter but it is not going to be accurate.

[TheEarCandy]

@CrystalsandSpiders You are wrong. Builders and speaker makers use this method on a daily basis and , when a speakers builder publishes that a speaker is actually 5.7 ohms and I hook up the meter to it and the meter says 5.7 ohms. Yes ohms changes with frequency but I am testing a speaker that is not handling wattage, just a raw frame speaker. Meters test more than DCR. WIth respect, how do you test speakers then? Thanks for the comment.

[CrystalsandSpiders]

@TheEarCandy Your average multimeter tests with a DC. In order to really test impedance, you need to use an impedance tester which uses AC. Resistance=DC Impedance=AC. Look it up on Wikipedia. I'm not trying to discredit your instructions, the DC resistance will probably be close enough not to blow your amp etc...

[TheEarCandy]

@CrystalsandSpiders THANKS!

[TheEarCandy]

@InterspeciesErotica7 Yeah man, send me a couple pictures, but I bet its a 8 ohm load that will go to 4 ohms minimum. How many speaker outs does it have? Hey, for 10 bucks... even if you have to repair a few things, you did really good! email is tim { at } earcandy.com

[InterspeciesErotica7]

@TheEarCandy - That just it... I don't know the brand. It's a "Reverb 100"(60's?). Picked it up at a yardsale for ten bucks. It's all tube and has instrument and microphone inputs. Kinda looks like a Silvertone but ALOT of amps look like that. Would the output transformer part number help?

[TheEarCandy]

@InterspeciesErotica7 No, just the speaker cab or speaker. Your amp output carrys wattage / voltage at a ohm load, not just the ohm load so this is for testing your speaker & or speaker cab with no amp hooked up to it. Does your amp not have the ohm load marked on it at the speaker out? If not, let us know what kind of amp it is and we can find out for you.

Thanks!

[InterspeciesErotica7]

@TheEarCandy - This works with amp output also, right?

[mmastylez]

thank you so much your video was very helpful, i was wondering how to tune a car amp with a multimeter for maximum output w/o clipping

[ribbob]

how do you test a pick up with a multimeter thanks