Joyo - JF-17 Extreme Metal [gut shots]

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.

Joyo - JF-17 Extreme Metal [gut shots]

Postby marmaliser » 30 Jun 2011, 10:28

Sanded IC's intriguing :scratch: Looks like a EHX Metal Muff. The fact that the Boost feature is almost unusable due to the extra Treble and Noise added also makes me think its a Metal Muff.
Anyhow just for the record here are some pics
P6280129.JPG

P6280117.JPG

P6280122.JPG

P6280121.JPG

P6280127.JPG
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modman (31 May 2015, 22:40), Steven_M (30 Jun 2011, 17:31)
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Re: Joyo Extreme Metal

Postby Scruffie » 07 Jul 2011, 09:35

Isn't the Metal Muff fairly simmilar to a BOSS HM-2 or MT-2... I don't know why but it seems less likely to me that they got the EHX schematic... maybe it's just me as the boost feature does give it away some.
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Re: Joyo Extreme Metal

Postby greeny23 » 07 Jul 2011, 10:01

The only pedal with smd from joyo?
the toyroom effects guy.

"My Pedals Kicked Ass! Don't be Jealous Boutique Builders! My Pedals Had Tone! AND YOU KNOW IT! Go Buy the Same LOUSY shit!"- Ken.
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Re: Joyo Extreme Metal

Postby Steven_M » 07 Jul 2011, 18:25

greeny23 wrote:The only pedal with smd from joyo?

No, there are quite a few. All of the Tech 21 rip offs are SMD also.
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Re: Joyo Extreme Metal

Postby JiM » 05 Sep 2011, 23:17

marmaliser wrote:Sanded IC's intriguing :scratch:

This doesn't look like sanded to me, just dirty with flux residue. :mrgreen:
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Re: Joyo Extreme Metal

Postby snabero666 » 15 Dec 2013, 15:09

Good day forumite,

Here's a mod that you can apply to extreme metal with great result. Extreme metal has the same distortion circuit with metal muff and boss mt2 with fix mid freq and additional boost circuit minus fet switch.So I try the mt2 no nasal sound mod. removing two capacitors C2 and C10 using cutter or nail puller.
Image

here is some sound sample http://www.youtube.com/watch?v=gKFLoKe1PBE

http://www.youtube.com/watch?v=qnHR3HLCsVg

the distortion will be dynamic and its more marshallish tone with great bass. the boost now makes the mid more pronounce or making it metal but still dynamic. This mod can be used at metal muff. good luck.

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Re: Joyo - JF-17 Extreme Metal [gut shots]

Postby dimacotorobai » 04 Feb 2017, 12:40

hello!what is nominal of c51,c2 and c10 capacitors?
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