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ID: 128 — T4Plus Pickup Switch Upgrade

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Assembled T4Plus-Switch

T4Plus-Switch Wiring

Product Description

This assembled and tested T4Plus-Switch upgrade gives you 102 pickup tones on any instrument with four separate pickup coils (either two 4-wire humbucker pickups; or one 4-wire humbucker pickup and two single-coil pickups; or four single-coil pickups). This is a do-it-yourself project that includes everything you need to install this upgrade into your right-hand or left-hand electric guitar or bass instrument.

There are now two versions available; the T4-Switch (gives you 68 pickup tones) and the T4Plus-Switch (gives you 102 pickup tones — also requires our VT-3 Volume-Tone Control.)

To Install This Upgrade

  1. Connect your pickup wires to the green solderless terminal strip.
  2. Connect the VT-3 Volume-Tone Control push-pull pot wires to
    the T4Plus-Switch 6-position green solderless terminal strip.
  3. Connect your output jack wires to the marked wires of our Volume-Tone Control.
    (don't forget to connect the bridge ground wire to the output jack ground wire)
  4. Mount the upgrade and start exploring all the pickup tones now available to you.

Using This Upgrade

This upgrade uses our T4-Switch.   More... >

SW1  S5B  SW2  SW3  S5N  SW4 

How It Works

There are really two "groups" of switches:
    (SW1, S5B, SW2)         -and-         (SW3, S5N, SW4)
(control bridge coils)                         (control middle and neck coils)

Here is how the switches are used:

Switches SW1, SW2, SW3 and SW4 are ON-OFF-ON switches used to turn an individual pickup coil Off and On. The middle position of each switch is Off. The down position turns the pickup On (in normal-phase) and the Up position turns the pickup On (in reverse-phase).

When you use these four switches (with S5B and S5N in the Down position), you get 29 different pickup tones from the combinations of four pickup coils being Off or On (either in normal-phase or in reverse-phase). It is also due to the combination of the pickup coils being in a Parallel circuit.

Switches S5B and S5N are ON-ON (a.k.a. ON-NONE-ON) switches that are used to put select pickup coils into a Series circuit when in the Up position. When Down, the select pickup coils are in a Parallel circuit.

Here are two things you must remember when putting pickup coils into a Series circuit:

First, putting two pickup coils in a Series circuit creates a "Compound" (i.e., Humbucker) pickup that gives you about 8 to 15 percent More output (think Heavy Metal/Jazz tone).

Second, because the pickup coils are in a Series circuit, BOTH pickup coils that are in Series MUST be On (either in normal-phase or reverse-phase). Any non-Series circuit pickup can be either Off or On (either in normal-phase or reverse-phase).

What Each Switch Controls

(this example uses two 4-wire humbucker pickups)

Switch SW1: Turns on (south bridge) pickup coil #1 (down is normal-phase, up is reverse-phase, center is Off.)
Switch S5B: Puts both (bridge) pickup coils #1 and #2 into a Series circuit when Up. Both pickup coils MUST be On.
Switch SW2: Turns on (north bridge) pickup coil #2 (down is normal-phase, up is reverse-phase, center is Off.)

Switch SW3: Turns on (south neck) pickup coil #3 (down is normal-phase, up is reverse-phase, center is Off.)
Switch S5N: Puts both (neck) pickup coils #3 and #4 into a Series circuit when Up. Both pickup coils MUST be On.
Switch SW4: Turns on (north neck) pickup coil #4 (down is normal-phase, up is reverse-phase, center is Off.)

For the T4-Switch, the various combinations of all of these switches will give you 68 pickup tones.

For the T4Plus-Switch, adding the push-pull Tone pot of our VT-3 Volume-Tone Control puts the north bridge and south neck pickup coils in this example into a series circuit. This gives you 34 additional (102 total) pickup tones, several of which are QuadraBuckerTM pickup tones (all four pickup coils in series).

You get more pickup tones with these upgrades.   < Less

You can hear the difference

This page has MP3 audio clips to let you hear the result our T4-Switch upgrade offers you.

What You Get

You get one of the following.

Tools You Need

You need the following tools (not supplied with purchase).

30-Day Return Policy

We accepts all returns. You get a 30-Day Return Guarantee on all ALL your upgrade products. You can use your Upgrade for 30 days. If you don't agree this is the greatest product ever, return it for a refund — no questions asked. Buyer receives full refund in their original payment method (see our website FAQ for warranty details.)

Buy This Upgrade

Because you get a 30-day Return guarantee, you can buy this upgrade with confidence. Get 68 pickup tones on your upgraded instrument. Combine our VT-3 Volume-Tone control to get 102 pickup tones. You have nothing to lose except your lack of creativity.

(ID: 128ap) T4Plus-Switch for 4-pickup coils      
gives you 102 unique pickup tones.

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Consider Adding The Following Related Customer-Installed Items

(ID: 153ap) VT-3 Volume-Tone Control Custom Assembly.
For use with our T4Plus-Switch.

Shipping Details

Shipping: All products are shipped via United States Postal Service. Allow 7-10 days for delivery.
Details: Shipping generally occurs within three business days of payment.
Saturday, Sunday and postal holidays are not business days.

Other Information

Notes: Ask questions before purchasing. Purchaser assumes all risk of liability with respect to the installation and use of these products.

This switching system cannot be used with active (battery-powered) pickups or pizeo pickups.