my stomp boxes always seemed to run fine with cheap adapters from poundstretcher, but i recently got a danelectro fab echo and there's this ungodly hum when i use one of those adapters. it's fine with a battery, but how long will that last?!
anybody know any cheap hum-free adapters for pedals?
there are so-called "regulated" adapters on ebay at £8 or so on buy it now. or should i go the extra mile an get a boss adapter at £20?
[quote:bc1cc0d3ac="mcclurg"]the hum means that your power supply isn't the right voltage, i had this problem a few times with power supplies kicking round the house. this or the power supply doesn't fit correctly[/quote:bc1cc0d3ac]No. Hum isn't anything to do with voltage.
Regulated adaptors can be bought from Maplin on Boucher Road for 6 or 7 quid. One might be better, but basically the problem is that your pedal is sensitive to hum on the power supply.
There's no guarantee that a more expensive power supply will be less noisy, although you'd hope it would be.
All I can say is that you can't tell until you try.
The Diago Pedal Power - [url]http://www.diago.co.uk/pedal-power/pedal-power/[/url] - is probably one of the best power supplies out there. If you're going to spend money on one, you really should invest as much as you can now so that you don't have to go buying another one a year down the line when your Poundstretcher one fails! Plus you have the option of linking up to 30 pedals hum-free.
I do own one of the regulated 12v adaptors from Maplin and it hasn't given me any trouble in two years. All depends on how many pedals you want to run I suppose!
funny you should say that, as i haven't used pedals much in recent years while piddling about in the shed on a practise amp. so i was surprised to dig out my pedals, many of which are something like 15 years old, and each one of them was working. i still gave them a good blasting with switch cleaner though. pity i couldn't say the same about my marshall valvestate - damn thing's buggered.
i bought a valve amp within a year or two of getting the valvestate. it was a laney aor/protube 30w combo. monster gain, which suited me at the time.
i sold it when i moved in with my girlfriend (now my wife) and bought a 4x cdrw with the proceeds (expensive buggers in those days). i didn't need the laney as i had bought a sound city 50+ and made a speaker cabinet to go with it.
Best one I know of is from http://www.mtraudio.com
I use their "DC-8DPR" http://www.mtraudio.com/mtrcatalogue.htm#DC
It has a transformer in it the size of yer fist, can't go far wrong with a lump of iron that size.
Being really anal, I also use it with some twisted-pair 2.1mm plug d.c. power leads made up by Russ Andrews
By the way, Die the Flu's answer below is balls, but the sort of predictable thing a lawyer would say :lol:
i bought a regulated power supply from a seller on ebay. works a treat. the £stretcher ones are double insulated which i don't think helps either - works on some pedals, but i've proved that it doesn't work on them all.
danelectro seem to be going for the genuine old fashioned sounds and manufacturing - they produce a zinc battery for their pedals as well as their own power supply.
[quote:b8af008130="thecomeons_2"]i bought a regulated power supply from a seller on ebay. works a treat. the £stretcher ones are double insulated which i don't think helps either - works on some pedals, but i've proved that it doesn't work on them all.[/quote:b8af008130]
What the FECK are you talking about??!
"Double insulated" means that the a.c. > d.c. mains transformer has two casings round it, rather than a single casing which is earthed. The only scenario where that would make a pedal "not work" would be one where the rest of your equipment/ring main's earthing was so utterly f*cked as to be a potentially lethal shock hazard anyways. In which case, wise the bap/consult a qualified electrician before somebody dies.
"Regulated" power supplies are ones which seek to maintain their output voltage irrespective of the current draw (rather than the voltage "drooping" under heavy load).
This is inself is not really related to "hum", which is more like a crap transformer which puts loads of ripple or harmonics on the d.c. output, the powersupply picking up RFI.
Right. Are we all clear then? You should buy the power supply with the same label as your pedals - particularly if it's much more expensive than necessary; it should be the right voltage or else it will hum something rotten; it should be made out of zinc; don't get one that's double insulted :wink: or it just won't work; regulated ones will behave; remember that one day you'll absolutely need 30 pedals.