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Musician questions

Former Community Member
Former Community Member

Hi there, 2 questions using my Seaward Apollo 500:

1- my radio connection between guitar and amplifier has a separate PSU, so is class 3? Should I simply PAT this as class 2?

2- my bass combo amp is a pretty new Ashdown Studio 15 which does not have any class marking (apart from RoHS CE) so has to be class 1? But this device fails earth continuity and I don't believe it is manufactured to earth the exposed metal parts. Can I ignore this test? If so, for what reason?

Thank you.

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    There are some Class II (or Class III) guitar amplifiers, for example if I remember correctly, some of the Roland Cubes, but they are suitably labelled with the appropriate safety class markings. Some smaller practice amps are intended to operate from external SELV “power packs”, or batteries.

    I have a Vox VT40X which has a separate PELV-output “power pack” and this is becoming more common for electronically-loaded lower-power amps as far as I can see … so you “PAT Test” (apologies for the tautology, I hate it too) the power pack not the amp.

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    There are some Class II (or Class III) guitar amplifiers, for example if I remember correctly, some of the Roland Cubes, but they are suitably labelled with the appropriate safety class markings. Some smaller practice amps are intended to operate from external SELV “power packs”, or batteries.

    I have a Vox VT40X which has a separate PELV-output “power pack” and this is becoming more common for electronically-loaded lower-power amps as far as I can see … so you “PAT Test” (apologies for the tautology, I hate it too) the power pack not the amp.

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