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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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  • Former Community Member
    0 Former Community Member

    Many thanks for your replies. I also put in a query to the amp manufacturer, Ashdown, at the point of posting here. I've now had 2 replies from them.

    The first reply said that the combo is class D with a switchmode supply

    The second reply said that the device should be tested at Test 102 and it is a Class I device

    Am I right in thinking that class D with a switchmode supply has no impact on PAT?

    Following the second reply, I revisited the amp with a multimeter and found continuity between the earth pin on the kettle power lead socket and the edge of the metal facia, so think amp now has clearly passed it's PAT (it previously passed the Seagate 500 auto CLII sequence)

    Does anyone know what “Test 102” refers to?

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  • Former Community Member
    0 Former Community Member

    Many thanks for your replies. I also put in a query to the amp manufacturer, Ashdown, at the point of posting here. I've now had 2 replies from them.

    The first reply said that the combo is class D with a switchmode supply

    The second reply said that the device should be tested at Test 102 and it is a Class I device

    Am I right in thinking that class D with a switchmode supply has no impact on PAT?

    Following the second reply, I revisited the amp with a multimeter and found continuity between the earth pin on the kettle power lead socket and the edge of the metal facia, so think amp now has clearly passed it's PAT (it previously passed the Seagate 500 auto CLII sequence)

    Does anyone know what “Test 102” refers to?

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