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New furniture and PSUs |
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ICL1P
Senior Member Joined: 04 Aug 2012 Location: Faringdon, Oxon Status: Offline Points: 2341 |
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Posted: 04 Nov 2017 at 8:49am |
I’m considering commissioning a piece of furniture to house my kit. The reasons are to hide the mess of cables, remove an ugly underpopulated Hi-Fi rack (small boxes don’t need the space) and to create some useful storage space, which might be used for LPs.
TTs would be on a wall mounted shelf. CDT and Majestic would be on top of the new piece of furniture. The new piece would have three shelves. The top shelf would be shallow and would accommodate Proprii, phonostages, switch and R Pi. The middle shelf would be deep enough for LPs, but could be used for other purposes. The bottom shelf would be shallow and would accommodate the PSUs. The top and bottom shelves would allow cable access through the back panel. I think I’m right in saying that it is usually recommended that PSUs are off the rack, preferably on the floor. Here’s the question; what, if anything, would be the downsides of housing the PSUs on the bottom shelf, as I have described? It is a suspended wooden floor in a 19th Century house. |
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Ifor
===== Reflex M & ACCESSION M, CuSat50, Majestic DAC, a Proprius pair. |
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Richardl60
Senior Member Joined: 04 Nov 2014 Location: Yorkshire Status: Offline Points: 1468 |
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Vibration/isolation. Until yo7 try it you won’t truly know, but you could try various isolation materials underneath (by ear). You could also try on/off the rack though best avoid carpet (heat).
If your gear is permenant the best way of tidying the cables up is to have them terminated to size, mains, interconnect and speakers. The STD PSU mains and outlet are long too and can be customised. |
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RichieCactus
Regular Joined: 18 May 2017 Location: Surrey Status: Offline Points: 47 |
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I wonder if you could attach some shielding material to the underneath of the shelf above where the PSU's will be ?
I've no idea what material or whether it would be effective - but sounds like a good idea ! rgds |
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Rega RP8/Cartridgeman MM3/Thorens TD166/AudioMods VI/Accession/Croft RIAA/Arcam A85/Quad 21L
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ICL1P
Senior Member Joined: 04 Aug 2012 Location: Faringdon, Oxon Status: Offline Points: 2341 |
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We don’t do carpets so that’s OK. I agree about bespoke cable lengths if permanently sited, but I’d not be that certain. |
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Ifor
===== Reflex M & ACCESSION M, CuSat50, Majestic DAC, a Proprius pair. |
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ICL1P
Senior Member Joined: 04 Aug 2012 Location: Faringdon, Oxon Status: Offline Points: 2341 |
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I don’t understand why shielding might be needed. |
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Ifor
===== Reflex M & ACCESSION M, CuSat50, Majestic DAC, a Proprius pair. |
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Graham Slee
Admin Group Retired Joined: 11 Jan 2008 Location: South Yorkshire Status: Offline Points: 16298 |
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PSU1's best on floor. This is because of mechanical vibration which all mains transformers produce. The vibration has been known to "induce" 50Hz (60Hz if your mains is that) signal into other things. This might not happen in all cases. But seeing it has it is worth thinking about. The "phenomena" I first discovered 30 years ago when building some amplifiers which had output transformers. I had mains hum on the output. I started removing bits of the circuit until there was no amplifier left - absolutely no connection to the output transformer, but there was still mains hum. It was because the mains transformer was doing what mains transformers do - they're constrained buzzers! The vibration was transmitted via the case to the output transformer which turned it back into electricity!
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ICL1P
Senior Member Joined: 04 Aug 2012 Location: Faringdon, Oxon Status: Offline Points: 2341 |
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Thank you Graham.
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Ifor
===== Reflex M & ACCESSION M, CuSat50, Majestic DAC, a Proprius pair. |
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