Author Topic: Electro Harmonix The Worm  (Read 7612 times)

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Rattlehead

Electro Harmonix The Worm
« on: March 06, 2007, 06:37:21 PM »
hi.
i just wondered if you think it is possible to make a footswitch to every mode in this pedal? (it has 4 modes and 1 footswitch)

http://www.musiciansfriend.com/product/ElectroHarmonix-The-Worm-Analog-MultiModulation-Effects-Pedal?sku=153322

Meanderthal

Re: Electro Harmonix The Worm
« Reply #1 on: March 06, 2007, 06:38:44 PM »
 Certainly, the only catch being where on the enclosure to locate them.
I am not responsible for your imagination.

Rattlehead

Re: Electro Harmonix The Worm
« Reply #2 on: March 06, 2007, 06:41:11 PM »
I think there's enough space between the footswitch on the left and the range knob.
has anyone here tried this pedal before?
does it worth the money?

Barcode80

Re: Electro Harmonix The Worm
« Reply #3 on: March 06, 2007, 07:06:07 PM »
decent pedal, but the autowah i expected more of an envelope filter from instead of just a boring set rate sweep. i just scored one for 30 bucks. i am hoping to find some more mods.

Rattlehead

Re: Electro Harmonix The Worm
« Reply #4 on: March 06, 2007, 07:09:40 PM »
how's the phaser?
and it's not really analog right?

puretube

Re: Electro Harmonix The Worm
« Reply #5 on: March 06, 2007, 08:57:59 PM »
it would only be possible to "footswitch" between 2 modes,
but not between a selected mode and bypass.

it is a very analog circuit - 3stage optical phaser;
(but NOT public domain!).

"autowah" is an often mis-interpreted description;

the LFO modulation was the reason why this pedal was designed upon special request...

pupina

Re: Electro Harmonix The Worm
« Reply #6 on: March 06, 2007, 09:41:21 PM »
Another big problem of this pedal is the noise!!!!! It's noisy in every sound you choose....does anyone has fixed this prob?

puretube

Re: Electro Harmonix The Worm
« Reply #7 on: March 07, 2007, 12:38:13 AM »
metalfilm resistors...

Mark Hammer

Re: Electro Harmonix The Worm
« Reply #8 on: March 07, 2007, 02:52:40 AM »
Correct me if I'm wrong, Ton, but did the earliest version of the Worm not exist in tube form, before it turned ito a solid-state E-H product?

And just to clarify,
metalfilm resistors...
means that if you replace the 5% resistors currently in there with low noise metal film types, you'll get....lower noise!

sir_modulus

Re: Electro Harmonix The Worm
« Reply #9 on: March 07, 2007, 03:12:38 AM »
I thought it was the the wahbrato?

Mark Hammer

Re: Electro Harmonix The Worm
« Reply #10 on: March 07, 2007, 03:18:15 AM »
Precisely.

Sweetalk

Re: Electro Harmonix The Worm
« Reply #11 on: March 07, 2007, 04:17:15 AM »
I saw a review of this in the EHX DVD, it's nice.. I think it's some "all-you-can-get-from-an-optical-phaser"  :icon_mrgreen: . I'll be nice to add a Expression pedal to control the wah sweep, that i'll be much more usefull!!

puretube

Re: Electro Harmonix The Worm
« Reply #12 on: March 07, 2007, 02:36:27 PM »
first, there was the TUBE-PHASER (TM):



therefrom the TUBE-VIBE derived:



the TUBE-VIBWAHTO:



the WAH-CASTER:
(actually a TUBE-CHORUS (TM) with built-in TUBE-TRON (TM) &
built-in 2 x 12W pure tube stereo power amp with stereo-spreading...)


(dual- aka: "Bi-" LFO with the "On-LED/Off-LED" indicator trick to Vb & to gnd...  :icon_wink:)

as well as  the TUBE-WAHBRATO:




at that point, a man (Ted Pierce, demo-guitarist for E-H @ Frankfurt MusikMesse 1998) comes in
and plays the Tube-Wahbrato...
...mentions he needs something like that, with batteries, for street-music...

he especially wants a subtle, cyclicly modulated Wah...

subtle? - OK, leave out 3 of the 6 tube-stages, replace (EMULATE  :icon_razz:) the tubes with transistors,
and add an extra knob to control the resonance



next: M.M. emails he`d love to see such a pedal reduced to 3 pots so it`d fit into a BMP box... :



("Resonance" & "Dry-Wet" set to fixed values, and switched with the "Mode-selector" - that`s the reason why it`s
not so easy to stompswitch the modes)
(also, this switching arrangement calls for a large amount of high-ohm pulldown resistors, that cry for metalfilms...)


a few years later, I "googled" (in fact it was "yahoo`d", back then...) for the WORM (= 3-knob-Wahbrato)
after it was issued by E-H under that name,
and stumbled across this forum, where 3 certain forumites claimed to have the schemo of it.............





NEVER trust a schematic on the web!!!

Schemos for nuttin` and chips fer free?







later again, a combinational mod of the transistor 3-knob/3-stage mod with the original (4-)Tube-Wahbrato
led to the 2-tubed:



(which can be regarded as the legit "Tube-Worm"  :icon_mrgreen:)



[ps: can`t seem to find the `96 pic of the switchable Tube-Phaser/-Vibe pedal, that ought to be between the 2nd & 3rd pic...]


$uperpuma

Re: Electro Harmonix The Worm
« Reply #13 on: March 07, 2007, 02:41:22 PM »
so impressive. Just....wow.
Breadboards are as invaluable as underwear - and also need changed... -R.G.

RDV

Re: Electro Harmonix The Worm
« Reply #14 on: March 08, 2007, 02:25:02 AM »
Bringin' th' funk as usual Tonmeister.

RDV

Paul Perry (Frostwave)

Re: Electro Harmonix The Worm
« Reply #15 on: March 08, 2007, 02:39:19 AM »
Nice to have the Word on the Worm :icon_smile:
I guess MM knows his market - but it's always sad to see a couple of useful controls forced out.

DWBH

Re: Electro Harmonix The Worm
« Reply #16 on: January 05, 2009, 11:05:56 AM »
Lets bump this.
The big enclosure Worm has been discontinued, having since been replaced by an XO version (BB sized diecast box). One (and I think the only) difference between these two is that the most recent version has an Expression pedal input.
Does anyone have a schematic for either (or both) pedals, so I can implement the EXP jack on an older versions?

puretube

Re: Electro Harmonix The Worm
« Reply #17 on: January 10, 2009, 01:51:31 PM »
here`s your answer...