Phase 45 with Univibe... Almost too subtle

KerryF · December 23, 2006, 09:27:42 PM

Hey guys. I finally just finish my JC Modded and Univibed Phase 45. I had to play with it a lot to get to an actual Phase or Univibish tone. I had to find the perfect spot on the blend control and bias control.

I finally got it going good, but its a little too subtle. Heres a few things I have noticed and want to check if they are correct:

1. With overdrive its a little more apparent.
2. With the Blend at its lowest and highest, it seems like the guitar is un-phased. With the Blend in the middle, you can actually hear the phase, but less volume and not as apparent as it seems it should be.
3. The phase part (I think its the phase part and not the univibe) isnt very phasery. Its just a much more mild and sharper version of the other side. The other side (I think its the Univibe) is much smoother and drags out a little longer and is nicer.
4. I have my bias pot set at full which give both JFETs 4.30v which sounds just about correct. I didnt even measure it to bias it, just plugged it in and moved that pot around and now when I went to measure it, it turns out to be 4.3v which seems perfect. What do you guys have for your JFET bias?
5. When I turn the bias pot to misbias it, the phase effect goes away but the guitar tone stays nice.

Let me know what you think and any answers. Thanks. (BTW, I used 3M7 for a resistor instead of the 3M9 incase this small change makes a difference).
Kerry

rockgardenlove · December 23, 2006, 10:22:22 PM

Quote from: call1800ksmyazz on December 23, 2006, 09:27:42 PM
2. With the Blend at its lowest and highest, it seems like the guitar is un-phased. With the Blend in the middle, you can actually hear the phase, but less volume and not as apparent as it seems it should be.

This sounds normal to me.

oldrocker · December 23, 2006, 10:23:40 PM

It sounds like it's working right from what you described. The P-45 is a more subtle then any other phasers because of only being 2 stage phase. I still think it sounds pretty good. Although for stonger Univibe type phase I use my Easyvibe. Of course the JFETs are crucial and the mis-matching of the FETS could be the reason for too light a phase. Maybe try some different fets and see what happens. I saw a pic of your vero board last month of your P-45 and it looks good. Nice job.

KerryF · December 23, 2006, 10:53:20 PM

Yea I still like it, but it just seems a bit more subtle then I thought. But its still pretty awsome so I like it.

But im pretty sure the JFETs are well matched because one measures to 4.30v and the other is about 4.32v. But I have some other matched pairs I kept together so I can try them.

Thanks old rocker. I will post some more pictures soon for you all.

KerryF · December 24, 2006, 07:36:35 PM

This is a great clean enhancer.

Pictures:

Happy Hannukah/Christmas/New Years (Holidays

),
Kerry

jonathan perez · December 24, 2006, 07:56:17 PM

how old are you?

tungngruv · December 24, 2006, 08:53:38 PM

Nice build Kerry! That 25k pot looks familiar

Merry Christmas (and a great looking job on that 45).

KerryF · December 24, 2006, 09:05:40 PM

Im 15. Why?

tung- yea thanks! it allowed me to stop being lazy and finish this pedal. Thanks, you too.

jonathan perez · December 24, 2006, 09:09:22 PM

dude, at 15 i was still trying to figure out how to save up enough money to buy a real amp with t00bs...

youre a genius!

but in all honesty, great work!

KerryF · December 24, 2006, 09:24:42 PM

Quote from: thebattleofmidway on December 24, 2006, 09:09:22 PM
dude, at 15 i was still trying to figure out how to save up enough money to buy a real amp with t00bs...

youre a genius!

but in all honesty, great work!

Thanks. I get that a lot. I take pedals to guitar stores sometimes and people are like whats that, then they take my number and stuff. I met Alfonso Hermida at a local shop one time when I was just starting. He lives right in my area/county so hes around here a lot I guess.

rockgardenlove · December 25, 2006, 01:53:40 AM

I'm 15 too.

(I just want somebody to call me a genius too.

)

Looks nice! You might give a Phase 90 the "Univibing" treatment; it might be a bit more pronounced. The Uni/Neo/Easy-vibe is really intense and the Phase 45 is pretty mellow from what I've heard.

I built a Phase 90 but I don't really use it for the stuff I play much. Maybe I'll do the mod and see how it sounds. (Sometime.)

And yeah, I've brought my projects to guitar stores too. I brought my little homebuilt amp once. The guys at the store were a bit scared to let me try it on the cabs they had --- it's kind of frightening looking.

Grey Hammond chassis with exposed tubes+trannies, sharpie labeled, with plexiglass bolted onto the bottom. After the initial shock though they got quite a kick out of it though. I bring my pedals all the time and people are usually curious as to what they are.

KerryF · December 25, 2006, 09:00:26 AM

^-Yea Pink. Your a genius too

. I might try one of the Univibe pedals or the Phase 90 because I am really into the clean sounds I am getting from this.

Meanderthal · December 25, 2006, 10:48:47 AM

The phase90 is probably what you expect a phaser to sound like... the more stages, the more intense the swoosh. The phase45 vwas always a subtle effect.
You can add more stages to phasers if you want, just patch 'em right in there like the other stages. I've heard of as many as 24, although I can't imagine what that would sound like.

Seljer · December 25, 2006, 11:13:11 AM

Quote from: Meanderthal on December 25, 2006, 10:48:47 AM
The phase90 is probably what you expect a phaser to sound like... the more stages, the more intense the swoosh. The phase45 vwas always a subtle effect.
You can add more stages to phasers if you want, just patch 'em right in there like the other stages. I've heard of as many as 24, although I can't imagine what that would sound like.

I can't remember who mentioned it recently (only a page or 2 back), that more than 8 or so stages don't really have much purpose with a guitar, a guitar just doesn't have enough frequencies to justify the extra stages (as compared to synths for example)
those Moogerfooger Phasers have got 12 stages

slightly related, I've just figured out what is wrong with my Phase 90, I had put a 560k resistor instead of a 56k one on the emitter of that last transistor

oldrocker · December 25, 2006, 11:13:57 AM

When I was 15 I could barely adjust a pedal let alone build one. Thank God for vocational electronics training in High School.

Anyway the subtle phase is great. Just a hint of phase with a good distortion sounds awesome. It's rare that I use a phase any stronger than the Phase45. While using the John Hollis Easyvibe I was surprised that I usually have it set to about a Phase45 strength phase amount after comparing the two side by side. One thing I like about the P-45 univibe mod is the blinking LED for phase speed. Nice pedal.

Gilles C · December 25, 2006, 11:25:09 AM

Nice clean job you did on the stripboard.

I like it. Great work.

Gilles

KerryF · December 25, 2006, 11:35:28 AM

Thanks all

.

My school has no electronic classes which i hate. Its a private college prep high school so basically only the main classes. Cant wait for college so I can learn more and stuff about electronics.

rockgardenlove · December 26, 2006, 05:33:13 AM

A private high school sounds like it would blow.

KerryF · December 26, 2006, 08:45:55 AM

^-Naaa. Just as good. No less parties or anything. The parties are just in much bigger houses because of all the rich people

rockgardenlove · December 26, 2006, 09:47:36 PM

How many people is it?
Mine's got 1500 or so. I wish it was bigger.

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Phase 45 with Univibe... Almost too subtle