Electro Harmonix The Worm

[Rattlehead]

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]

 Certainly, the only catch being where on the enclosure to locate them.

[Rattlehead]

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]

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]

how's the phaser?
and it's not really analog right?

[puretube]

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]

Another big problem of this pedal is the noise!!!!! It's noisy in every sound you choose....does anyone has fixed this prob?

[puretube]

metalfilm resistors...

[Mark Hammer]

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]

I thought it was the the wahbrato?

[Mark Hammer]

Precisely.

[Sweetalk]

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"  . I'll be nice to add a Expression pedal to control the wah sweep, that i'll be much more usefull!!

[puretube]

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...  )

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  ) 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"  )



[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]

so impressive. Just....wow.

[RDV]

Bringin' th' funk as usual Tonmeister.

RDV

[Paul Perry (Frostwave)]

Nice to have the Word on the Worm
I guess MM knows his market - but it's always sad to see a couple of useful controls forced out.

[DWBH]

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]

here`s your answer...