Ibanez - FZ-7 Fuzz (Help me modify this fuzz!)
- DWBH
- Cap Cooler
After some time with it, I'm not happy.
I want to do some mods, reduce the gain, put it more controlled. It's very.... violent.
I want it to be a fuzz, yeah, but I want it to have less gain, a better tone control, and a bit more responsive.
Here's the schem:
http://www.schematicx.com/schematic/iba ... schematic/
If somebody could take a look at the schem and give me some pointers were to start, I'd be thankful.
André
I want to do some mods, reduce the gain, put it more controlled. It's very.... violent.
I want it to be a fuzz, yeah, but I want it to have less gain, a better tone control, and a bit more responsive.
Here's the schem:
http://www.schematicx.com/schematic/iba ... schematic/
If somebody could take a look at the schem and give me some pointers were to start, I'd be thankful.
André
- modman
- a d m i n
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In absence of better suggestions, I would start playing with the filtering section: C22, C24 - C26 trying to smooth out the response, and increase the treble cap (27nF stock)...
Careful soldering and not overheating the pads and you can try out a few things.
good luck
Careful soldering and not overheating the pads and you can try out a few things.
good luck
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- nooneknows
- Resistor Ronker
I don't understand the function of the 4 transistor in parallel, any idea?
- TubeDude22
- Breadboard Brother
Raising a zombie thread to share my mods for the Ibanez FZ7 fuzz.
I just bought a Vox AC15 amp and found out that it loves fuzz. So, I tested my small collection of fuzz pedals and noted their idiosyncrasies. The problem I had with the Ibanez was that it had tone suck in bypass. What I ended up doing was modifying the buffer stages with three caps and one resistor. Clarity is MUCH improved in bypass and the thing generally sounds much better in fuzz mode.
NOTE: The factory schematic shows C1 as a 223 cap but mine came stock with a 104 mylar.
1. Change R2 to 22K.
2. Change C44 to .1mfd metalized polyester.
3. Change C35 to .1mfd metalized polyester.
4. Parallel C36 with a small 103 mylar cap.
I'm really enjoying the pedal now. If I do any more mods down the road, I'll post them. But this will be a good start for anyone wanting to improve one of these.
Cheers!
/TD
I just bought a Vox AC15 amp and found out that it loves fuzz. So, I tested my small collection of fuzz pedals and noted their idiosyncrasies. The problem I had with the Ibanez was that it had tone suck in bypass. What I ended up doing was modifying the buffer stages with three caps and one resistor. Clarity is MUCH improved in bypass and the thing generally sounds much better in fuzz mode.
NOTE: The factory schematic shows C1 as a 223 cap but mine came stock with a 104 mylar.
1. Change R2 to 22K.
2. Change C44 to .1mfd metalized polyester.
3. Change C35 to .1mfd metalized polyester.
4. Parallel C36 with a small 103 mylar cap.
I'm really enjoying the pedal now. If I do any more mods down the road, I'll post them. But this will be a good start for anyone wanting to improve one of these.
Cheers!
/TD
- Attachments
-
- ibanez-fz7-fuzz-schematic.pdf
- Complete Schematic
- (37.35 KiB) Downloaded 225 times
RE-ressurecting the zombie thread... so I have one of these, and the AC15 you mention, and they seem paired well, but I need to tame it as well. are you pretty happy with all the mods a year of so in? Seems a simple job, so I'm up for trying if it's worthwhile.
- zedsnotdead
- Breadboard Brother
RE-RE-Ressurecting!
A friend of mine just gave me a FZ7 and asked me to mod it as I please....
I have the schematic, it's kind of strange looking one, for me at least... I was wondering if one could change the clipping diodes (D5/D6) for anything else...
Are there any other mods I could do to add character?
thx!
A friend of mine just gave me a FZ7 and asked me to mod it as I please....
I have the schematic, it's kind of strange looking one, for me at least... I was wondering if one could change the clipping diodes (D5/D6) for anything else...
Are there any other mods I could do to add character?
thx!
- Dirk_Hendrik
- Old Solderhand
Information
See the low mid hi text next to the resistors in vicinity of U2A? Replace those resistors by pots (20k) and dial to your sonic character till you drop. That's what teh designers of this fuzz obviously did. Once they found the character of their liking they measured the pots and repaced em by voltage divider resistor sets.