DOD FX pedal, AC in, tip polarity?
Craig Lamparter
>
> I bought a used DOD compressor/sustainer this weekend. Nowhere on the
> pedal does it say whether an AC adapter should be tip positive or tip
> neg.
>
> Does anybody know?
>
I started to research the polarity issue
on DOD effects, when I found that:
1) using a nonDOD adaptor voids the warranty
&
2) It's easier to by a 1Amp-9volt adaptor, and
a package of 9Volt battery connectors.
Doing so lets you supply power to a
bunch of DOD effects via the battery
connector on each effects box. Polarity
is obvious when it comes to the 9v connector.
I now have six DOD effects running off of one
Radio Sh*ck AC adaptor... A $12 investment and
a little patience will solve all your effect
power/battery problems.
BTW this solution will *NOT* work on BOSS effects,
as the 9V leads would be snipped the first time
you stepped on the pedal (I suppose you could get
creative and drill holes in the bottom of your BOSS
effects -- but IMHO I'd rather stick w/ DOD.
#DEFINE SOAP_BOX=
I've grow mighty tired of electronics vendors who think
they can copyright a voltage, and therfore demand that
you buy 'their' power-supply(s). I guess I should just
be thankfull that DOD/etc doesn't make their own
special copyrighted/pattended 9Volt batteries.
Craiger
cra...@ecst.csuchico.edu
--these oppinions are my own and not necessarily those of
any institution/company of which I am a member.
Scott McKnight
pedal does it say whether an AC adapter should be tip positive or tip
neg.
Does anybody know?
email responses would be great, especially to mckn...@pire.org.
Response via post would be cool too.
Thanks,
Scott McKnight
Scott H. Andrews
: mck...@ix.netcom.com (Scott McKnight) wrote:
: >
: > I bought a used DOD compressor/sustainer this weekend. Nowhere on the
: > pedal does it say whether an AC adapter should be tip positive or tip
: > neg.
: >
: > Does anybody know?
tip is hot, sleeve is ground, so that means tip is positive,
sleeve is neg.
: I started to research the polarity issue
: on DOD effects, when I found that:
: It's easier to by a 1Amp-9volt adaptor, and
: a package of 9Volt battery connectors.
: Doing so lets you supply power to a
: bunch of DOD effects via the battery
: connector on each effects box. Polarity
: is obvious when it comes to the 9v connector.
: I now have six DOD effects running off of one
: Radio Sh*ck AC adaptor... A $12 investment and
: a little patience will solve all your effect
: power/battery problems.
i did a similar thing, with a Radio Shack adapter, but i ran
the power into the pedals using the AC adapter jacks in the
pedals and not using little 9v battery clips. i built a
splitter box to split the power from the AC adapter into 6 or
8 lines for the pedals.
: BTW this solution will *NOT* work on BOSS effects,
: as the 9V leads would be snipped the first time
: you stepped on the pedal (I suppose you could get
: creative and drill holes in the bottom of your BOSS
: effects -- but IMHO I'd rather stick w/ DOD.
i ran DOD and Boss pedals just fine; i used the different type
of plug that Boss uses to run power into the Boss pedals.
: I've grow mighty tired of electronics vendors who think
: they can copyright a voltage, and therfore demand that
: you buy 'their' power-supply(s).
i agree. i get a big laugh out of guitarists who buy separate
pedal company brand AC adapters, at $19 each, for separate
pedals!
: Craiger
: cra...@ecst.csuchico.edu
scott andrews
sh...@virginia.edu
http://fermi.clas.virginia.edu/~sha3u
go Boston Red Sox -- 1995 World Series Champs
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Patrick Wayne Markus
>the power into the pedals using the AC adapter jacks in the
>pedals and not using little 9v battery clips. i built a
>splitter box to split the power from the AC adapter into 6 or
>8 lines for the pedals.
I too sought the Radio Shack power supply solution, but found them to be
very noisy. Try building your own power supply if you can (filtered!),
it is ALOT more quiet.
Port'o'Chael
Wayne Markus) wrote:
> I too sought the Radio Shack power supply solution, but found them to be
> very noisy. Try building your own power supply if you can (filtered!),
> it is ALOT more quiet.
I got inside my pedals, and put a BHM cap across the power
input terminal (BHM = Big Honkin Mutha), >100uF@>16WVDC.
I found that to be helpful on cutting down on the noise
from some of these poorly-designed wall-warts.
---Michael...
_____________________________ __________________________
_____________________________BGSC__________________________
Dean Aldridge
From: Port'o'Chael, RA3...@email.sps.mot.com
Date: Fri, 14 Jul 1995 19:06:51 GMT
In article <RA3035-1407...@saint.sps.mot.com> Port'o'Chael,
RA3...@email.sps.mot.com writes:
>In article <3u36cn$7...@giant.seas.smu.edu>, mar...@seas.smu.edu (Patrick
>Wayne Markus) wrote:
>> I too sought the Radio Shack power supply solution, but found them to
be
>> very noisy. Try building your own power supply if you can (filtered!),
>> it is ALOT more quiet.
>
>I got inside my pedals, and put a BHM cap across the power
>input terminal (BHM = Big Honkin Mutha), >100uF@>16WVDC.
>I found that to be helpful on cutting down on the noise
>from some of these poorly-designed wall-warts.
> ---Michael...
There's a mod in one of the Anderton books which describes this as well.
In addition to the capacitor it also recommends a resistor as well but I
can't remember how it hooks up or what value; maybe someone with the book
will follow up on this.
user-name
using an underated wall wort. For example, folks will use a 150 mA
(milliampere) wall wort with a peddle requiring 200 mA. If you overload
the supply, you'll have tons-o-hum. Yea capacitors may help, but be
prepaired for the thing to burst into flame. Hopefully it won't burst
into flame, but will eventually blow diodes and maybe transformer if
underated. These guys with their capacitor solutions are correct provided
the wall wort can handle the load. Read the lable before you go out and
buy a capacitor, and solder for your wood burning tool. I recommend a
supply capable of providing the load current needed plus 10%.
dnult
***************************************
In article <3umqc1$h...@idril.ccc.govt.nz>, Dean Aldridge
MHammer555
voltages as high as 15v. In some cases, this results in MORE distortion
(if the gadget is designed to generate distortion based on the supply
voltage). In other cases the added supply voltage with give greater
headroom and allow the device to work with LESS distortion. I run a Fuzz
Face clone I made off a regulated 12V adaptor and
it sounds great.
If you aren't sure whether the tip of the power plug should be positive
or negative, take a gander at the jack on the inside. You may see two red
wires soldered to it. If so, then tip is positive. Alternatively, use an
ohmmeter and see what the resistance is between the tip lug of the power
jack and the ground (i.e., chassis).