In need of a good regulated power supply!

GuzBaas · #1 03-08-2013, 08:28 PM

Hi!

I just bought a DHA VT1 Bass Eq and it hums like mad!

I contacted Dave and he said it is almost certain that I have a bad power supply... so

I'm in need of a good 12V DC 1200 mA regulated power supply...

To me, every power supply is a good power supply... so I need help!

Thanks!

cheapbasslovin · #2 03-09-2013, 10:17 AM

The only thing that I can find as a solution is a TRex Chameleon with all 4 of its 12V output sections run in parallel.

Basically you'd take a daisy chain cable and put one plug in each 12V section and then put one in the pedal.

That really sucks as a solution though. You could try cobbling together a bunch of 1.5 volt batteries to make 12V as a test to verify that it is a power supply issue. The batteries won't last very long, but if it's still buzzing with batteries it's not a power supply issue.

DHA · #3 03-21-2013, 04:08 PM

Quote:

Originally Posted by GuzBaas

Hi!

I just bought a DHA VT1 Bass Eq and it hums like mad!

I contacted Dave and he said it is almost certain that I have a bad power supply... so

I'm in need of a good 12V DC 1200 mA regulated power supply...

To me, every power supply is a good power supply... so I need help!

Thanks!

300ma would be fine but higher rated supplies are always a good idea for a longer power supply life.

bumperbass · #4 03-21-2013, 04:23 PM

Just get something like this:

http://www.ebay.com/itm/Genuine-Yama...item2560302445

If the plug doesn't match your unit, just splice your old one on, being sure to observe polarity. What's a new one cost from the manufacturer?

bumperbass · #5 03-21-2013, 04:27 PM

I just realized that Dave is DHA. Don't understand. Why don't you buy a new one from Dave?

sprag · #6 03-22-2013, 02:08 AM

Quote:

Originally Posted by DHA

300ma would be fine but higher rated supplies are always a good idea for a longer power supply life.

Would that figure also be true for a vt2 std? I bought one used and it came with a 2.5 amp power supply. probably an old laptop charger

Ps. sorry for the hijack

bongomania · #7 03-22-2013, 03:07 AM

I have destroyed three different expensive pieces of gear by trying to power them with laptop chargers. I do not have a good explanation of WHY that happened; and I know it is not just because of the high current rating. But I am permanently spooked away from using laptop supplies with pedals or rack gear.

GuzBaas · #8 03-22-2013, 06:47 AM

Thanks everyone. I bought one at eBay and worked perfect!

So to anyone having unwanted noise from a DHA VT* pedal just get a GOOD REGULATED power supply.

GuzBaas · #9 03-22-2013, 06:48 AM

Quote:

Originally Posted by bongomania

I have destroyed three different expensive pieces of gear by trying to power them with laptop chargers. I do not have a good explanation of WHY that happened; and I know it is not just because of the high current rating. But I am permanently spooked away from using laptop supplies with pedals or rack gear.

I tried using my wireless router adapter.. but didn't work.

sprag · #10 03-22-2013, 10:16 AM

Quote:

Originally Posted by bongomania

I have destroyed three different expensive pieces of gear by trying to power them with laptop chargers. I do not have a good explanation of WHY that happened; and I know it is not just because of the high current rating. But I am permanently spooked away from using laptop supplies with pedals or rack gear.

Sorry that really sucks

Maybe mine is, maybe it isn't. Its been working fine for a year or more, but if I can ditch it in favour of my cioks I surely will

duderus · #11 03-28-2013, 07:51 PM

Quote:

Originally Posted by GuzBaas

Thanks everyone. I bought one at eBay and worked perfect!

So to anyone having unwanted noise from a DHA VT* pedal just get a GOOD REGULATED power supply.

Can u show me which one u bought? I'm having a similar issue. Thank u!

duderus · #12 03-28-2013, 07:52 PM

Quote:

Originally Posted by GuzBaas

Thanks everyone. I bought one at eBay and worked perfect!

So to anyone having unwanted noise from a DHA VT* pedal just get a GOOD REGULATED power supply.

Nevermind, did u buy the one from eBay above? Did it work? I'm having the same problem.

DHA · #13 03-31-2013, 12:13 PM

Quote:

Originally Posted by sprag

Would that figure also be true for a vt2 std? I bought one used and it came with a 2.5 amp power supply. probably an old laptop charger

Ps. sorry for the hijack

VT2 will need at bit more, 500mA at least I would suggest

Dave

mystic38 · #14 04-02-2013, 06:01 AM

laptop chargers are typically 18-20V "DC" and can have very poor regulation. they are also prone to hum, buzz interference and RFI issues... given that they connect to a battery this is not an issue when used with a laptop, but none of this bodes well for pedals.
..and I take that back,.. sometimes they are not good when used with a laptop either..particularly when you are attempting pro-audio.. i unplug my laptop for mobile recording sessions...lol

Quote:

Originally Posted by bongomania

I have destroyed three different expensive pieces of gear by trying to power them with laptop chargers. I do not have a good explanation of WHY that happened; and I know it is not just because of the high current rating. But I am permanently spooked away from using laptop supplies with pedals or rack gear.

sprag · #15 04-02-2013, 06:15 AM

Quote:

Originally Posted by DHA

VT2 will need at bit more, 500mA at least I would suggest

Dave

Thanks for the info
and thank you very much for making such a sweet sweet pedal