@@GaryDmedia thanks Gary, to narrow down where the short may be, could you then split the circuit and look which direction is giving you 0 ohms? Also if it were an intermittent fault, would this technique replicate the fault even if it wasn’t currently active? Thanks
It is fairly expensive. For a fraction of the cost I'm pretty sure someone could build a test circuit himself. Unless you're using such tester on a regular basis, it would be very difficult to justify such investment.
Yes I definitely agree, even the more simple model from Australian Monitor are around $150. The problem lies in the fact that it is not just a glorified multimeter. You can use an audio generator and a micro volt meter but again unless you have access to these items it can then be a bit cumbersome to setup.
Very good question. The ratings printed on each speaker transformer is a guide. There are so many variables. The goal rating is designed for but does not exceed it. For example: a “20 watt” tapping point on a transformer may in reality only be 19 or 19.5 watts. And another speaker may be 19.8 watts. Hope that helps.
excellent review! This would come in handy
Thanks +GuitarPlanetVideos it's a handy meter and takes all the guesswork out of testing impedance.
The speaker is 10w + 10w + 2.5w + 2.5w = 25.0w..but why the meter calculate the total w only 21.0w?
Hi Gary, sorry for the same question again. Would this meter show if theres a short in the line??
Yes it will indicate “0” ohms indicating there is a problem with the line.
@@GaryDmedia thanks Gary, to narrow down where the short may be, could you then split the circuit and look which direction is giving you 0 ohms? Also if it were an intermittent fault, would this technique replicate the fault even if it wasn’t currently active? Thanks
Luke, fault finding is a very difficult thing to do. Disconnecting runs of speakers and testing each run separately best practice.
@@GaryDmedia exactly what I did back then
It is fairly expensive. For a fraction of the cost I'm pretty sure someone could build a test circuit himself. Unless you're using such tester on a regular basis, it would be very difficult to justify such investment.
Yes I definitely agree, even the more simple model from Australian Monitor are around $150. The problem lies in the fact that it is not just a glorified multimeter. You can use an audio generator and a micro volt meter but again unless you have access to these items it can then be a bit cumbersome to setup.
The speaker is 10w + 10w + 2.5w + 2.5w = 25.0w..but why the meter calculate the total w only 21.0w?
Very good question. The ratings printed on each speaker transformer is a guide. There are so many variables. The goal rating is designed for but does not exceed it. For example: a “20 watt” tapping point on a transformer may in reality only be 19 or 19.5 watts. And another speaker may be 19.8 watts. Hope that helps.