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Post by jazzbones on Mar 19, 2016 14:15:24 GMT
Somewhere, I've read, that a BMU is better suited to valve equipment, is this the case? Maybe, thats why some prefer a mains regenerator because their amps etc., are SS... someone care to educate me on this, thanks? Fortunate, I don't have a prob with mains as there is no heavy industrialised factories near me.
On reflection NVA's amps are SS and I guess the NVA was developed for the same brand amps initially.
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Post by MartinT on Mar 19, 2016 17:19:07 GMT
It's tricky to state a firm relationship there, Ron. It's a very long time ago that I had valve equipment and that was with only a poor relation of the mains treatment I have now. Certainly I can state that my SS equipment responds very well to regeneration, but I couldn't make such a sweeping generalisation.
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Post by ChrisB on Mar 19, 2016 22:02:56 GMT
I think it's a big mistake to make any kind of generalisations whatsoever with mains related products because the quality of supply is so variable from house to house/system to system.
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Post by gazjam on Mar 20, 2016 15:44:38 GMT
Just noticed this thread, interesting read guys. Yup, happily enjoying (and still endorsing) banced mains to make the most of anyones hifi system. Milage will vary according to the quaity of your mains but to me its one ot those "infastructure" upgrades that filters down through everything, so well worth it. My own unit is the Airlink 2KVA hard wired box, with no sockets. Went for this option as Im quite a stickler for how my system looks, so always planned the BMU to be in the next room out of site, Its bit of an ugly beast to be fair. Theres a slight buzz from it, but obviously cant hear it! Cant really hear it when in the next room actually, if I had any issues with buzz Id get a DC blocker board fitted...so buzz isnt an issue. Ive a cable coming from the BMU unit output through the wall and feeding into a "hydra" unit, which feeds all the various bits of equipment.  Just rewired the whole setup actually with 4mm solid core cable and it was a big improvement over the 6mm stranded spur cable I used before. Solid core doesnt bend except where you want it, so not an option imo if you unplug your equipment frequently. Was pain in the backside rewiring it all, but all cables are to exact length, of best quality and clamped in place. Back of my rack is a lot tidier now too, both interconnects and mains cables well seperated and to exact length. Something not spoken about here is safety? Not so much for the socketed all in one boxes, but with the hardwired option (imo the best), having double pole RCBO's on both output and input, as well as getting your install signed off by a spark is very important. My original build thread...photos long gone but could knock up a pdf I could link to and post here on the thread if useful? |
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Post by Sovereign on Mar 20, 2016 16:22:03 GMT
Hi gazjam, interesting that you heard an improvement in sound quality when you upgraded all your power cords to 4mm solid core. Do you have a link to the new cable? Thanks mate.
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Post by dsjr on Mar 22, 2016 9:37:41 GMT
This is from personal experience, admittedly with LP12's that owners were beginning to modify in the 80's.
Solid core is not used from wall socket to 'gear' as I *understand it* to be dangerous if kinked accidentally. That's why stranded cables are used (this needs to be properly confirmed though as I don't know the legislation). We had an incident where an LP12 owner used solid core twin + earth and gave himself a belt, maybe not due to the cable itself, but....
If anyone wishes to replace good gauge stranded cable with solid core, PLEASE be careful and check house insurance..
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Post by Deleted on Mar 22, 2016 10:34:12 GMT
What worries me is some of these expensive mains cables use solid core(s) in some form and deviate from standard wire colours so likely breaking uk regs.
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Post by dsjr on Mar 22, 2016 13:55:20 GMT
Somewhere, I've read, that a BMU is better suited to valve equipment, is this the case? Maybe, thats why some prefer a mains regenerator because their amps etc., are SS... someone care to educate me on this, thanks? Fortunate, I don't have a prob with mains as there is no heavy industrialised factories near me.
On reflection NVA's amps are SS and I guess the NVA was developed for the same brand amps initially. Apart from case and socket-style decisions, not really much to develop as such imo as it's really very simple. I believe studios have used suchlike for years - anything to help keep the mains supply as clean as reasonably possible at all times. |
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Post by gazjam on Apr 5, 2016 9:40:02 GMT
This is from personal experience, admittedly with LP12's that owners were beginning to modify in the 80's. Solid core is not used from wall socket to 'gear' as I *understand it* to be dangerous if kinked accidentally. That's why stranded cables are used (this needs to be properly confirmed though as I don't know the legislation). We had an incident where an LP12 owner used solid core twin + earth and gave himself a belt, maybe not due to the cable itself, but....
If anyone wishes to replace good gauge stranded cable with solid core, PLEASE be careful and check house insurance..A good point and worth repeating. Theres a reason stranded cables are used, behind plastered walls its different though. In my own case, its a permenant installation and all solid core cable is clamped off behind my rack. Its going nowhere! If I am doing anything behind the rack I switch off power at the BMU, safety first always. If you will be plugging and unplugging cables a lot I'd advise against solid core, for the reasons Dave mentions. In my experience, getting any electrical work signed off by a reputable electrician and house insurance was fine. Check for yourself if doing any electrical work at your own place of course. |
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