center negative Fuzz Face?

[vinceman]

I'm looking for a Fuzz Face-Hendrixy-type Fuzz. I was interrested in the Fulltone 69, when I found out that it was center positive.

I want to power the pedal with my 1spot, so I think I have to find another Fuzz Face with center negative.

Any suggestion?

[coreybox]

I'm looking for a Fuzz Face-Hendrixy-type Fuzz. I was interrested in the Fulltone 69, when I found out that it was center positive.

I want to power the pedal with my 1spot, so I think I have to find another Fuzz Face with center negative.

Any suggestion?

The orientation of the power jack has little to do with power supply compatibility. What you need is a fuzz that is negative ground.

I believed that the 69 fuzz IS negative ground (though i am not positive).

I believe that the 69 will work fine with the 1spot.

EDIT: My assumptions seem to be incorrect.

[Bob Sweet]

I'm looking for a Fuzz Face-Hendrixy-type Fuzz. I was interrested in the Fulltone 69, when I found out that it was center positive.

I want to power the pedal with my 1spot, so I think I have to find another Fuzz Face with center negative.

Any suggestion?

You might want to check these out. They are all center negative but some have a positive ground. Check the Fillmore West.

http://www.thegearpage.net/board/showthread.php?t=231965

[ZepFuzz05]

Doesn't Visual Sound make a onespot adapter for center positive pedals? I think at something like Elderly's music online it's $2.50. . .

[chemical69]

problem is, you cannot daisy chain centre positive with centre negative pedals. You need a separate One Spot to power a centre positive fuzz pedal.

I found that out the hard way after I got a Fulltone Octafuzz...

[Dale]

Keeley Fuzz Head may do it. "The Fuzz Head is designed to work like Fuzz Face pedals that many players use as a LEAD BOOST. A Fuzz Face can be muddy, lacking note definition, too bassy, and lacking sustain. An overdrive sometimes doesn't give enough or is too smooth. In contrast, our design is transparent, has a better frequency response, and gives you that cutting edge for lead breaks."

Clips
http://www.robertkeeley.com/fuzzhead/

A Tone Factor Huckleberry actually sounds very close as well to me.

[analogmike]

Bob Sweet is right (of course!). You need a pedal with negative ground, like a silicon fuzzface or clone. Some germaniums may be built like that too but when we made some like that there were too many problems so we don't build germanium fuzzes with negative ground (but our Beano Boost is).

[MattHahn]

you will need to have a separate power supply for your fuzz.
Most, if not all germanium pedals are positive ground and therefore they need a separated psu or isolated out on something like a pp2plus....

[Vintage]

I think the "69" has a small current draw so you may be able to get by without using the onespot, just unplug the input jack when you are done playing.

Sorry to hijack,
Bob are you taking prepayment?


You might want to check these out. They are all center negative but some have a positive ground. Check the Fillmore West.

http://www.thegearpage.net/board/showthread.php?t=231965

[John Phillips]

The '69 is positive-ground, which is one reason I don't have mine any more.

The ZVex Fuzz Factory (which uses a combination of germanium and silicon transistors) is negative-ground, and although it will do far more things - and very weird ones, if you're not used to it! - it will do a decent vintage fuzz sound too. The Vexter model (the cheaper series) has a power jack (and LED) as standard - the original hand-painted models need a 'power plate' adaptor.

I run my Fuzz Factory on a daisy-chain with all my Boss etc pedals from a single power supply BTW.

[jb1911]

The '69 wants to be first in any line up, even before your wah so it's no big deal to use a battery. If it's first in line, you unplug it when you're done anyway. I also have a reverse adapter from one spot and a seperate one spot for it. That works too.

[vinceman]

Thank you for all your answers guys !
Has anyone tried the BYOC ultimate fuzz, which is a FF clone with neg ground?

Can it be compared with a 69?

[Bob Sweet]

Sorry to hijack,
Bob are you taking prepayment?

No pre payment needed, just building right now. email me.

[MattHahn]

i wouldnt suggest building a negative ground germanium circuit.It may pass sound and yes it may work but these transistors are not made to be used that way and that can result in havoc.germanium-positive ground.

[ironpyro]

It's very confusing.

You can wire the adaptor jack for negative tip and still have a positive ground, but then you cannot daisy chain it with other pedals that have a negative ground.

You can build a fuzz face that uses PNP transistors such as the NKT275 or AC128 with a negative ground, but you will occassionally (but not often) get a motorboating noise that way. That's probably why analog mike doesn't offer a negative ground version. You want the real original transistors, you have to put up with the inconvenience of positive ground.

The byoc fuzz uses AC127 germanium transistors which are the NPN version of the AC128. These are intended to be used in a negative ground, so the byoc fuzz can be used in a daisy chain with any typical FX power supply without any complications.

[Python]

.... They are all center negative but some have a positive ground. Check the Fillmore West.

http://www.thegearpage.net/board/showthread.php?t=231965


What does center negative, positive ground mean? I thought it was either center negative or center positive.

Jim

[coreybox]

What does center negative, positive ground mean? I thought it was either center negative or center positive.

Jim

Center "Orientation" just refers to the way the power tap is wired. There is a center contact, and an outer contact. Depending which ways you hook up the wires, you can have V+ or V- on the center tap. This has ZERO affect on sound/circuit design, but it is conventional to have center negative for daisy chaining.

The grounding polarity is a circuit design. If you look at some older fuzz's, you'll see that the V+ from the battery is connected directly to circuit ground. Most new effects use the V- as circuit ground. Effects with different ground polarity can not be daisy chained... they must be run off separate power supplies (or isolated power supplies). You can imagine why not, between the two effects both V+ and V- would be connected to ground.

Now, some people will wire + ground effects as center positive, just to remind people that they are different than the norm. This is not necessary.....

[starfish]

Questions begging to be asked -

Which sounds better NPN or PNP, or is there no difference in sound? (e.g. AC127 vs. AC128).

Are PNP built just to stay true to the original circuit design or is there an audible advantage?

[that_brianm_guy]

I think the "69" has a small current draw so you may be able to get by without using the onespot, just unplug the input jack when you are done playing.


Or, get an adaptor/converter, and without plugging the adaptor into a power source, plug in into the pedal - that way you can leave your cables plugged in, since the presence of the power adpator in the socket "disconnects" the battery. Just remember to plug the adaptor back in when you're done.

FWIW, I use the One Spot adapter, and can power my 69 off of the PPII - or just unplug the power cable, and use a carbon battery. Sounds fine either way, though I like the battery better.

[jim1jam]

KR "Gypsy Fuzz!!!! kick's major booty