Quick Pedal PSU Question - Jemsite
Gear, Equipment, Recording & Off Topic Gear, Equipment, and Recording discussed here. Amps, pedals, whatever.

 
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 10-30-2007, 06:56 AM Thread Starter
 
Join Date: Jan 2007
Location: Cardiff, UK
Posts: 696
Reviews: 3
Quick Pedal PSU Question

I have a DC-9 pedal power supply with 5 outputs that claims 450mA total.

Does this mean that each output is assigned 90mA regardless of how many pedals I have plugged in or does it vary? For example, if I had two pedals attached, would it be 225mA per output?
Wild_Child is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 10-30-2007, 08:17 AM
 
Join Date: Nov 2003
Location: Oxford, UK
Posts: 2,781
Re: Quick Pedal PSU Question

No, it means that the total current drawn by all of the stuff plugged into the PSU must not exceed 450mA, as that is the maximum the DC-9 can put out. Look up your pedals here and see how much current they each draw:

http://www.cioks.com/assets/CURRENT%...ON%20TABLE.pdf

Unless all your pedals are drawing lots of power, you'll be unlikely to come anywhere close to 450mA.
Algiman is offline  
post #3 of 5 (permalink) Old 10-30-2007, 08:17 AM
 
Join Date: Jan 2007
Location: South West UK
Posts: 953
Re: Quick Pedal PSU Question

Basically there is 450mA available for all outputs. If the outputs are wired in parallel (which they will be) then each output will take the current it needs up to the limit of the supply.
e.g.
2 pedals @ 100mA each will use 200mA out of the 450mA available
1 pedal at 350mA and one at 100mA will be ok and each will get what it needs, add another 100mA pedal and you'll overload the supply.
Probably all that will happen is one of the pedals wont work but it could cause the supply to fail or overheat.
The problem is that often manufacturers don't quote the correct current drain for a pedal so it can be difficult to tell.
Jim
Vim Fuego is offline  
post #4 of 5 (permalink) Old 10-30-2007, 09:33 AM Thread Starter
 
Join Date: Jan 2007
Location: Cardiff, UK
Posts: 696
Reviews: 3
Re: Quick Pedal PSU Question

Thanks guys, I think I understand it now.. I was half way there in thinking the mA varies on each output. So the pedal draws whatever it requires, subtracting from the total mA of the power supply available to additional pedals. Thanks for the link too, Aligman!

The reason I ask is because I just bought an RMC Wizard Wah and while reading up on it I came across this from the man himself:

Quote:
Model number: RMC5 - WIZARD WAH
Current draw: <10 mA
If an AC adapter is used, the adapter requires a 5.5/2.1mm coax plug with a negative center post, 9VDC AC regulated Class II, 20mA to 200mA max current output.


NO power supply which exceeds 200mA output should be used with "new-generation" RMC wahs. This is not limited to any particular brand or style.
So does that mean even if my other pedals are using in excess of 250mA, leaving 200mA or less available to the wah, it would not be suitable since the overall maximum of the PSU is 450mA? Or would it be okay, since the output of an individual plug is less?

Also, am I right in thinking that the Voodoo Labs Pedal Power 2 has a seperate 100mA for each 9v output? If so, that might be the way for me to go...

Last edited by Wild_Child; 10-30-2007 at 09:39 AM.
Wild_Child is offline  
post #5 of 5 (permalink) Old 10-30-2007, 09:43 AM
 
Join Date: Nov 2003
Location: Oxford, UK
Posts: 2,781
Re: Quick Pedal PSU Question

The RMC5 must be working in a very unusual way. Sorry, don't understand that one.

The Voodoo Labs Pedal Power 2 is a fine piece of kit, and even with the RMC5's weird power requirements would work fine.
Algiman is offline  
Reply

Tags
voodoo lab , voodoo labs

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Jemsite forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address

IMPORTANT: You will be required to activate your account so please ensure that your email address is correct.

If you do not receive your activation check your spam folder before using the CONTACT US form (at the bottom right of each page).



Email Address:
OR

Log-in











Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Quick Question Eco Tech: Setup, Repairs and Mods 2 08-23-2007 06:22 AM
MR HOSONO - QUICK QUESTION User010101 Comments to Ibanez 1 07-18-2007 11:36 AM
Quick question on 2x12s tobe Gear, Equipment, Recording & Off Topic 4 03-18-2005 07:21 PM
volume/expression pedal question!! tonluvara Gear, Equipment, Recording & Off Topic 7 07-20-2004 09:52 AM
help with amp feedback! and gear question chorus pedal, flan seven7seven Gear, Equipment, Recording & Off Topic 11 09-30-2002 06:47 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome