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Vintage Audio (record players, hi-fi etc) Amplifiers, speakers, gramophones and other audio equipment. |
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21st May 2018, 10:10 pm | #1 |
Triode
Join Date: May 2016
Location: Cannock, Staffordshire, UK.
Posts: 41
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Hacker Gondolier GP42 and AL41 Amp
Hi all need a little help with my setup.
Both amps have a very loud humming especially when the volume is turned up and more so on the AL41 amp. As far as I know both amps have Mullard mustards, is there anything else I need to change? Thanks. |
21st May 2018, 11:10 pm | #2 |
Dekatron
Join Date: Sep 2007
Location: Oxfordshire, UK.
Posts: 4,311
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Re: Hacker Gondolier GP42 and AL41 Amp
I would start by working out what the fault is. That way you won't change anything pointlessly. Mullard mustards are normally extremely reliable.
Cheers, GJ
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21st May 2018, 11:34 pm | #3 |
Nonode
Join Date: Jun 2014
Location: Bristol, UK.
Posts: 2,074
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Re: Hacker Gondolier GP42 and AL41 Amp
As a very general rule - volume dependent hum is a grounding issue - check the connections from the cartridge through to the amp(s).
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'....don't go mistaking Paradise for that home across the road!' (Bob Dylan) |
22nd May 2018, 9:44 am | #4 |
Dekatron
Join Date: Sep 2015
Location: Southwold, Suffolk, UK.
Posts: 8,331
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Re: Hacker Gondolier GP42 and AL41 Amp
Is there still hum when the stereo adaptor is completely dissconnected and you are running the GP42 as a standalone player. There may be an earth loop.
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Edward. |
22nd May 2018, 9:43 pm | #5 |
Triode
Join Date: May 2016
Location: Cannock, Staffordshire, UK.
Posts: 41
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Re: Hacker Gondolier GP42 and AL41 Amp
thanks all with your answers i will check to see if it is humming with the lead disconnected.
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