Power supply question

[BloodRose]

I have to get power supplies for my boards. Ive been looking at power supplies and trying to figure out what I need and the best I can get for the money.

Ive been thinking that I need to get a designated port for each pedal. That means I need more ports obviously. And the big thing is they all have limited amounts of 18v ports, and both of my boards have 2 18v pedals.

Here is where I need help.. Im thinking, based on some things Ive read, that I can use one port for more than one pedal with a daisy chain if the MA ratings of the pedals together is less than what the port produces.?? Say the port is 18v, 500MA. Can I use a chain and hook up 2 18v pedals if one is 20ma and the other is 15ma? As long as the total of all pedals is 500 or less right??

If this is the case, I can get away with a much smaller and less expensive unit.

Thank you!!

 

[Little Pigbacon]

Re: Power supply question

What you're thinking is correct. The daisy chain cable will connect the two pedals in parallel, and each pedal will draw from the power supply only as much current as it needs.

One issue that might arise is that the two pedals connected to the same 18V port might not "like" being connected together through their power feed, and you might get some noise that way. It's the same rational for having isolated ports for all pedals.

 

[HiFiRebel]

Re: Power supply question

Totally fine for most 9V non-digital pedals with low enough MA ratings. And the same type of power source requirements of course.

My understanding is that some digital pedals can be daisy chained but a lot of them will cause ground loops if used that way.

 

[PFDarkside]

Re: Power supply question

Usually digital pedals put a lot of noise on the common ground, which will then be amplified by the gain pedals.

Two options, you can always use a 9v isolated power supply then a second 18v wall wart with a 2-1 daisy chain.

I power my big board with a Voodoo Lab 4x4 (good for high current but only 9v or 12v) and a T-Rex Chameleon for my small board. Chameleon does 9v/12v on three channels, 9v/18v for one channel and 9v/12v/12VAC on the last channel. That dumb MXR EVH Flanger needing 18V kills me. On the small board I daisy chain the drives, then do individual channels for the Flanger, Phaser, Delay and Reverb.

What are your pedals and requirements?

 

[BloodRose]

Re: Power supply question

Main board: ( im at work, so dont have the MA ratings)

Jerry Cantrell Wah: 9V
MXR 10 band EQ: 18V
Korg Pitchblack: 9V
Keeley Seafoam+: 9V
Digitech DL8: 9V
MXR Carbon Copy: 9V
Holy Grail Nano: 9V
Boss Noise suppresor: 9v
Green Rhino: 9v
OCD: 18V

Secondary Board: Mostly for "color"
MXR Flanger : 18 v
ADA Flanger: 18 V
Rattattack : 9V
Boss Octave: 9V
MXR Phase 90: 9V
Dunlop Tremolo: 9V

 

[allbutromeo]

Re: Power supply question

Either a Truetone 1 Spot Pro CS12, or an MXR M238 Iso-Brick should work for either board. They both have 2-18v outlets

 

[d1dsj]

Re: Power supply question

Other than each pedals power requirement, just be sure not to connect pedals that go into the front of the amp and pedals that go into the loop with the same daisy chain or you will more than likely have ground loop issues.

 

[BloodRose]

Re: Power supply question

Either a Truetone 1 Spot Pro CS12, or an MXR M238 Iso-Brick should work for either board. They both have 2-18v outlets

Yeah, based on all the pedals independently, I been looking at the 12 but dont want to spend that much. If I can daisy chain more than one pedal, I wont need nearly that many outlets and only 1 18 v

Other than each pedals power requirement, just be sure not to connect pedals that go into the front of the amp and pedals that go into the loop with the same daisy chain or you will more than likely have ground loop issues.

Great idea! didnt think about that, but im def running some each way.. Thanks

 

[Darg1911]

Re: Power supply question

Try the CS7 then. Buy it through Amazon and if it's noisy with daisy chaining then send it back and get the CS12.