EHX - Metal Muff

thn.technik · Post by **thn.technik** » 20 Aug 2012, 17:11

Hi, Eagle file for MetalMuff
Enjoy

thn.technik · Post by **thn.technik** » 22 Aug 2012, 19:51

Connection diagram

Post by **GodSaveMetal** » 09 Sep 2012, 23:12

thn.technik wrote:Connection diagram

You have verified your layout? cuse I´m doing another one like the original:

this is a preliminar in 3D; well I´m going to do the real one and public a layout wen VERIFIED!!!
that great man!!!!

thn.technik · Post by **thn.technik** » 10 Sep 2012, 17:35

GodSaveMetal wrote:
thn.technik wrote:Connection diagram
You have verified your layout? cuse I´m doing another one like the original:

this is a preliminar in 3D; well I´m going to do the real one and public a layout wen VERIFIED!!!
that great man!!!!

Yes layout is verified, I do the standard version and after test I add mid freq control - it's sounds great
my version is not like original MM, is without input buffer(is not necessary when using true bypass),
is true bypass and is added one double potentiometer Mid Frq (mod from metal zone MT-2)

regards

absolute324432 · Post by **absolute324432** » 04 Nov 2012, 17:29

what is the size of pcb ?

mister707 · Post by **mister707** » 10 Nov 2012, 01:03

Here, the 3D version of File Eagle Metal Muff.

Post by **GodSaveMetal** » 10 Nov 2012, 03:11

MISTER707!!! and your PCB???

sinner · Post by **sinner** » 10 Nov 2012, 22:37

It's on god damn top of the page!

Satchmoeddie · Post by **Satchmoeddie** » 30 Dec 2012, 22:08

Wait until the half cent SMD .1uF caps start heading south. It also looks like a true bypass pedal. It isn't. It would have cost EHX less than a dollar more to make these not die 30 days after the warranty expires. That includes drilling holes in the board with a modification to the Gerber file, and using some cheesy disc caps. The caps off each Vcc +9VDC into each chip start leaking. Soon you are trying to run each chip on 4 volts not 9. For $4 more they could have lost the SMD signal chain caps, and used something better. For $12 they could have put some good Panasonic caps in these. Remember they are buying parts by the 1000s. I guess this is why I have such a huge collection of non working Electroharmonix stuff dating back to the CA3080/LM741 1970s Blackfinger. Prying this Metal Muff Top Boos apart was a real joy too. I removed the bridge from a Sigma 12 string that was glued on with Epoxy easier than that EHX came apart. Oh well! When repairing cheap disposable crap, this is normal. Neither one sustained much damage. Both can be fixed.

Toyota, Whirlpool, and GM are all guilty of this stuff too. 50 cents more to use 2/3 watt resistors in the ECM display on a Toyota? I fix one every week or two now. It is a quick $10 for 10 minutes work. Is it really worth saving 17 cents to make a product that is total crap compared to one that won't fail? It is a $20,000-$50,000 car, add $5 to the price.

I can"maybe" see this in a $90 stomp box,

but a car? 7 cents more to ,make an oven control that wont fry itself? 7 cents on a $700 stove? I like hot food, & I do not enjoy walking in the rain, snow or 115 degree sun. Add .01% to the price and make it right! I am also willing to pay $10-$25 more for a better stomp box. I am not nearly as pissed off when those crap out due to cheap ass oriented engineering practices than when my car stops running because a display that tells me how much gas I am wasting stopped lighting up. Most old school techs won't touch SMD with their bare hands long enough to throw it away. Take 16 old radios from 1920s-present. Open them up and look inside. Starting with WWII you can watch the quality go from shitty to shittier, to shittiest. Prewar even the cheap cabinets were beautifully made, the cabs & chassis had hand holes and other well thought out things so they could be easily serviced. (some even had bolt down screws,& plates for shipping and moving) With WWII we started cranking out war goods regardless of quality figuring a tank, jeep, or radio would be blown to bits within a couple weeks anyway. Sadly business thought to themselves, "Hmmm, This is great! We can cut corners, sell this shoddy crap to the returning GIs who have money burning holes in their pockets, and make out like bandits!". $90 for a disposable box of crap? When it quits throw it in the ever growing pile.

$2200 for an SMD rig and I am doing this with it?

Happy 2013!

Bernardduur · Post by **Bernardduur** » 14 May 2023, 20:30

I just got two in for some repairs; both had the input FET damaged and therefor produced no sounds anymore

The units were easily fixed.

One was the Rev C version w/ chrome knobs (1st edition)
The second one was a Rev E version w/ black knobs

The input section was altered in the Rev E for trying to get around the breaking of the FET transistor. Here's what they done:

Look at my instagram for pics

EHX - Metal Muff [schematic]