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Hello everyone,
I am a fairly experienced luthier with a good bit of electrical experience as well. A customer wanted me to replace his cheap factory humbuckers with an EMG 81 and 60A combination. I didn't see any likely problems other than the routine task of routing for a battery box as the guy wants to run on 18 volts which apparently is the rage in death metal types. So here is the problem- neither of the pickup seem to respond to the battery voltage- they put out a low but usuable signal unpowered, with no difference in the audible output with the battery in the circuit ( + voltage red wire; neg voltage to ground).TO make sure the controls weren't the problem I ended up running the PUPS directly to the amp. THe battery is good, reading 9.67 volts. These parts were bought at two different places with almost 4 months between the purchase., so getting two defective units in that situation units would be very unusual. The only thing I can think of is that the 18 volts we initially tried fried the electronics although the spec sheet says the safe voltage range is 9-27 volts. Any help anyone can give me would be greatly appreciated. I am having a bit of a time telling the customer his expensive new pickups aren't working.
Thanks in advance!
Jon Nixon, Luthier
Markham. VA 540 671 5138
I am a fairly experienced luthier with a good bit of electrical experience as well. A customer wanted me to replace his cheap factory humbuckers with an EMG 81 and 60A combination. I didn't see any likely problems other than the routine task of routing for a battery box as the guy wants to run on 18 volts which apparently is the rage in death metal types. So here is the problem- neither of the pickup seem to respond to the battery voltage- they put out a low but usuable signal unpowered, with no difference in the audible output with the battery in the circuit ( + voltage red wire; neg voltage to ground).TO make sure the controls weren't the problem I ended up running the PUPS directly to the amp. THe battery is good, reading 9.67 volts. These parts were bought at two different places with almost 4 months between the purchase., so getting two defective units in that situation units would be very unusual. The only thing I can think of is that the 18 volts we initially tried fried the electronics although the spec sheet says the safe voltage range is 9-27 volts. Any help anyone can give me would be greatly appreciated. I am having a bit of a time telling the customer his expensive new pickups aren't working.
Thanks in advance!
Jon Nixon, Luthier
Markham. VA 540 671 5138
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