Tube Zipper Instructions

Back to Product Page / Instructions (PDF)

Congratulations on your purchase of the truly outrageous Tube Zipper. The Tube Zipper is two effects in one, a warm sounding Tube Envelope Follower and a rich tube Distortion unit. When these two effects are combined into the same circuit the outcome are entirely unique new wild effects. The Tube Zipper uses two premium 12AX7EH vacuum tubes.

Carefully reading these instructions will ensure that you will get the most out of your Tube Zipper. We urge you to sit down with your Tube Zipper and spend some time learning exactly how this pedal works. You won’t regret it!

Your Tube Zipper comes with a unique 12V AC/1000mA adaptor. Use only the adaptor supplied. Using any other adaptor can cause harm to you and the Tube Zipper.

- CONTROLS -

ENV Switch (UP/DOWN) - Selects the direction of the filter sweep.

MODE Switch (TRON/TRILL) - In TRON MODE, the filter sweeps smoothly and follows the envelope of the input signal. In TRILL MODE, a modulation is added to the envelope so that as the filter sweeps, it sounds like the note is being trilled. WARNING: If the INPUT GAIN knob and SENSITIVITY knob are both turned up when switching from TRON to TRILL MODE it is possible that the unit will go into oscillation, this can be avoided by turning down the SENSITIVITY or INPUT GAIN knobs before flipping the MODE switch.

INPUT GAIN Knob - Boost the input signal before the filter. When the INPUT GAIN is turned up, it will yield tube distortion.

DRIVE Knob - Adjusts the amount of distortion after the filter. As you turn the DRIVE knob up, past 12 o’clock, the overall volume of the pedal will begin to decrease. Simply turn the MASTER VOLUME up to compensate.

SENSITIVITY Knob - Determines how sensitive the filter sweep is to your playing. Use this knob to adjust how far up or down the filter will sweep when you play.

FREQUENCY Knob - Sets the peak frequency of the filter when the envelope is not active. When the envelope is active, the FREQUENCY knob determines both the start and stop frequency of the filter sweep.

RESONANCE Knob - Determines the RESONANCE or Q of the filter. As you turn the RESONANCE clockwise the filter will become increasingly sharper. When the RESONANCE knob is turned up all the way the TUBE ZIPPER may begin to self-oscillate. If you find the oscillation undesirable simply turn the RESONANCE knob down.

MASTER VOLUME Knob - Controls output volume.

POWER LED - Lights up when the TUBE ZIPPER is on.

STATUS LED - Lights up when the TUBE ZIPPER Effect is engaged. If the STATUS led is off, the unit is in TRUE BYPASS mode. The Footswitch engages/disengages the effect.

FREQUENCY LED - Gets brighter as the filter’s peak frequency rises.

- OPERATION -

Some Things to Keep in Mind When Experimenting with the TUBE ZIPPER:

Due to the high gain of the filter circuit, when the RESONANCE knob is turned up high, the Tube Zipper may go into oscillation. This is the way the unit is designed and enables you to get over-the-top tones that make the Tube Zipper unique. If the oscillation is bothersome simply turn the RESONANCE knob down.

The controls are extremely interactive and sensitive - slight changes in a knob’s position can sometimes produce a radically different effect.

Tips for Using the Envelope Follower in the TUBE ZIPPER:

The ENV UP Position: When you play a note, the peak frequency of the filter will start at wherever the FREQUENCY knob is set and then very quickly jump UP to a higher frequency, depending on how loud the note is and the setting of the SENSITIVITY knob. The louder the note and the higher the SENSITIVITY knob, the higher the frequency will jump UP. The peak frequency of the filter will then sweep DOWN, following the envelope of the note. The filter sweep will stop at the frequency the FREQUENCY knob is set to. To obtain a large frequency sweep when using the TUBE ZIPPER in the ENV UP position, you will want to set the FREQUENCY knob to a low value, below 9 o’clock on the knob. Set the SENSITIVITY and the RESONANCE knobs above 12 o’clock.

The ENV DOWN Position: When you play a note, the peak frequency of the filter will start at wherever the FREQUENCY knob is set and then very quickly jump DOWN to a lower frequency, depending on how loud the note is and the setting of the SENSITIVITY knob. The louder the note and the higher the SENSITIVITY knob, the lower the frequency will jump DOWN. The peak frequency of the filter will then sweep UP, opposing the envelope of the note. The filter sweep will stop at the frequency the FREQUENCY knob is set to. To obtain a large frequency sweep when using the TUBE ZIPPER in the ENV DOWN position, you will want to set the FREQUENCY knob to a high value, above 12 o’clock on the knob. Set the SENSITIVITY and the RESONANCE knobs above 12 o’clock.

TRON/TRILL MODE:

1. When switching between the two modes, the SENSITIVITY knob might have to be adjusted to better suit the mode you are in.

2. In TRILL MODE, the SENSITIVITY knob as well as the INPUT GAIN knob will effect the reaction the envelope has to your playing. Both of these knobs should be tweaked to find the best TRILL sounds.

3. TRILL MODE usually works better with high RESONANCE.

Sample Settings
(See PDF for diagrams of sample settings)

WARNING: There are extremely high voltages in the Tube Zipper even when it is unplugged - DO NOT OPEN THE TUBE ZIPPER.

- WARRANTY INFORMATION -

Please register online at https://www.ehx.com/product-registration or complete and return the enclosed warranty card within 10 days of purchase. Electro-Harmonix will repair or replace, at its discretion, a product that fails to operate due to defects in materials or workmanship for a period of one year from date of purchase. This applies only to original purchasers who have bought their product from an authorized Electro-Harmonix retailer. Repaired or replaced units will then be warranted for the unexpired portion of the original warranty term.

If you should need to return your unit for service within the warranty period, please contact the appropriate office listed below. Customers outside the regions listed below, please contact EHX Customer Service for information on warranty repairs at info@ehx.com or +1-718-937-8300. USA and Canadian customers: please obtain a Return Authorization Number (RA#) from EHX Customer Service before returning your product. Include with your returned unit:  a written description of the problem as well as your name, address, telephone number, e-mail address, and RA#; and a copy of your receipt clearly showing the purchase date.


United States & Canada
EHX CUSTOMER SERVICE
ELECTRO-HARMONIX
c/o NEW SENSOR CORP.
55-01 2ND STREET
LONG ISLAND CITY, NY 11101
Tel: 718-937-8300
Email: info@ehx.com

Europe
JOHN WILLIAMS
ELECTRO-HARMONIX UK
13 CWMDONKIN TERRACE
SWANSEA SA2 0RQ
UNITED KINGDOM
Tel: +44 179 247 3258
Email: electroharmonixuk@virginmedia.com


This warranty gives a purchaser specific legal rights.  A purchaser may have even greater rights depending upon the laws of the jurisdiction within which the product was purchased.

To hear demos on all EHX pedals visit us on the web at www.ehx.com
Email us at info@ehx.com


- FCC COMPLIANCE -

Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipment under FCC rules.


mouse over image to zoom
Quick Specs
True bypass using a mechanical relay
Overdrive stage allows interaction with the envelope follower for hard hitting sweeps and frequency color
Tron mode allows the filter to sweep smoothly, following your amplitude's envelope
Trill mode allows modulation to be added to the envelope as the filter sweeps
Switchable up or down filter sweep directions
Input gain boosts the signal before the filter drive
Resonance control adjusts the Q or peak of the filter ranging up to self-oscillation
Two Electro-Harmonix 12AX7 vacuum tubes included
12VAC-1000 power supply included
Mailing List
Sign up to receive all the latest EHX news
Email:
H
To withdraw from this service, e-mail us and action will be taken within 2 weeks.
The EHX Community
Here are a few easy ways to stay informed on the latest news from Electro-Harmonix...
Forums (Discussion & Support)
Have a question, comment, suggestion? Come join the EHX Forums! You'll meet EHX staff and knowledgeable users from around the world.





Show your colors with genuine EHX tee shirts and authentic Electro-Harmonix accessories!
Get this limited-edition Day-Glo poster of the original 1968 art that inspired the Electro-Harmonix logo!

Mike Matthews stated: “The image on our Flashback Poster is of the original artwork that inspired the famous Electro-Harmonix logo. I think players who dig our pedals will also enjoy the chance to own a piece of EHX memorabilia.”
Did you know that Electro-Harmonix makes many of the world's greatest vacuum tubes? The next time you need to re-tube your guitar, bass, or hi-fi amp, be sure to insist on getting authentic Electro-Harmonix tubes.
Our new EH Strings allow you to capture every nuance of your playing style with lightning fast playability. Made of a pure nickel wrap with a specially-selected stainless steel, these sweet-sounding round wounds are truly like no other strings you've played. Not only do they last longer and stay in tune longer, but we think they're the best sounding strings ever made. Available in 9s, 10s and 11s.
Dig it, now you can rock EHX in our new heavy-duty black hoodie! It’s emblazoned with the iconic Electro-Harmonix Flashback logo in white on the left chest and back.