Pre Amps

CTP-2 CoolTube® Preamp

The CoolTube Preamp is designed for use only in Pro Series Takamine guitars made in Japan. It is not compatible with G Series guitars and electronics.

CoolTube Controls

John Jorgenson Presents the CoolTube Audio Demo

Listen to each part of the John Jorgenson demo on the CoolTube® Preamp:

  • Part 1: CoolTube® Demo
  • Part 2: External Input Demo
  • Part 3: EQ and Tuner Demo
  • Part 4: CoolTube® Demo
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The Takamine CT4B II Pre Amp

The CT4B II Preamp is designed for use only in Pro Series Takamine guitars made in Japan. It is not compatible with G Series guitars and electronics.

CT4B II Preamp Features

The CT4B II preamp is designed for ease of use and purity of tone. The CT4B II consists of 3 bands of graphic EQ tone control, a volume control slider and a built-in chromatic tuner.

The 3 band EQ provides control over the bass (LOW), midrange (MID) and treble (HIGH) frequency response. With the sliders set at the midpoint (0) the electric signal from the guitar is evenly balanced across the frequency range. The desired tone is then dialed in by using the sliders to add or subtract frequency response as desired. Each frequency control slider will raise or lower the band response by +/-5db.

The volume slider adjusts the output volume of the preamp.

The convenient built-in chromatic tuner is extremely accurate and very easy to use. The tuner is activated by pressing the TUNER POWER button. To tune your instrument, simply pluck any open string. The tuner will then display the name of the note that has the closest frequency of the string played. The amount of deviation from the note (higher or lower) is displayed by red arrows indicating sharp or flat. When only the green center light illuminates, the note indicated in red has reached precise tuning. When the guitar is unplugged, the TUNER POWER switch acts as on and off.

Your CT4B II tuner is also capable of being calibrated to frequencies other than standard A440. When the PITCH button is pressed, the frequency that is currently set will be shown by a flashing red light above the frequency number. While the reference light is flashing, press the Pitch repeatedly to set the desired reference pitch. With each press of the button, the reference pitch will increase by 1Hz increments from 440Hz to 445Hz. Once the pitch has reached 445Hz, the next press will decrease the pitch to 438Hz. When the button operation is stopped, the reference pitch is set and the tuner will stand by for tuning.

To facilitate silent on-stage tuning, the TUNER POWER button also acts as a mute switch when the guitar is played amplified. If you wish to be able to tune with your signal amplified, simply press the TUNER POWER a second time. Press a third time to shut off the tuner function. The tuner will shut off automatically when there is no signal for a couple of minutes.

The Takamine CT4-DX Pre Amp

Introducing the CT4-DX

The two-channel CT4-DX offers the ultimate in preamp flexibility. Used with the Palathetic® under- saddle pickup, it offers four-band EQ (low, low mid, high mid, high) and two notch filter controls to reduce feedback.

Add a second pickup (the Takamine Tri-Ax, for example), and the CT4-DX gives you independent control over both pickups, each of which will then have two-band EQ and a notch filter control. You can also alter the mix levels of each of the pickups. Other features include volume control and onboard tuner.

CT4-DX Features:

  • Two channels
  • 4-band EQ (low, low mid, high mid, high)
  • Two notch filters to control feedback
  • Connection for second pickup source
  • Mix control for use with second pickup
  • Built-in digital tuner

The Takamine G Series TK-40 Pre Amp

The Takamine TK-40 Preamp found on G Series guitars features volume control, bass, middle and treble frequency slider controls, EQ bypass, a Notch Filter, Tuner and a Mid Contour Switch. The preamp is switched on by plugging a standard 1/4" mono instrument cable into the endpin strap pin/jack. These last four features are described in greater detail below:

Also available, the Takamine TK-40D preamp is a double pickup version of the TK-40 preamp. This version has two pickup elements to accommodate each piece of the split saddle bridge design on specific G Series guitars.

EQ Bypass: This push button enables the user to engage or defeat the EQ section. When the switch is in the depressed position, the EQ is active. Return the switch to the “up” position and the EQ circuit is bypassed. The bypass of the EQ circuit is desirable in some studio or live environments where external EQ is preferable. The user can also use this defeat switch to quickly check the results of the EQ adjustments relative to the original sound.

Notch Filter: A Notch Filter is a very special kind of EQ, an extremely narrow and deep cut of an audio frequency band. The TK-40 has a "tunable" notch filter which empowers the user to select the specific frequency band that will be affected by the notch. With this tunable notch filter the user can "surgically" remove troublesome feedback frequencies that occur due to the natural resonance of the guitar and interaction with the environment.

The notch control provides control of the center frequency of the notch effect. When the monitor or stage levels are too high, and the user hears the guitar starting to feed back, the player can engage the notch circuitry by pushing the "In/Out" button under the "Notch Filter" knob, and simply tune the filter (actually changing the center frequency of the notch) by slowly rotating the notch control until the feedback is eliminated.

Mid Contour: By pushing (activating) the Mid Contour button, the user is selecting a pre-shape EQ that emphasizes the frequencies normally found to be "desirable" in an acoustic guitar (400 Hz). With the Mid Contour button is depressed, the mid EQ is effectively controlling "nasal" tone qualities while in the up position, the mid control can add punch in upper mids or help "round off" the attack present in this frequency spectrum. The user should experiment with the button and the "Middle" control to determine their sound preference.

Tuner: The tuner in the TK-40 is fully chromatic and automatic. The battery drops into the top of the preamp under the battery cover. There are "+" and "-" markings at the bottom of the compartment. Press the tuner switch to activate it. The note played is shown in the digital display. Up and down arrows will appear, when both are on and not flashing, the note is in tune. If the "up" arrow is flashing the string must be tuned higher, and if the "down" arrow is flashing the string must be tuned lower. The slower the arrow flashes, the closer the string is to being in tune to the note displayed. The tuner does not mute the output and turns off automatically after one minute. It can't be turned off manually.

The Takamine G Series TP-4T Pre Amp

The TP-4T preamp is designed for use only in G Series model guitars and are not compatible with Pro Series Takamine guitars made in Japan.

TP-4T Preamp Features

The Takamine TP-4T preamp found on G Series guitars features a gain knob, a tuner, an active shelving system EQ with bass, middle, and treble frequency slider controls, and a low battery light. The preamp is switched on by plugging a standard mono instrument cable into the endpin/strap pin jack. Unplugging the cable switches the preamplifier off. The TP-4T Preamplifier is powered by a single 9 volt battery.

Also available, the Takamine TP-4TD preamp is a double pickup version of the TP-4T preamp. This version has two pickup elements to accommodate each piece of the split saddle bridge design on specific G Series guitars. This preamp features a gain knob, a tuner, an active shelving system EQ with bass, middle, and treble frequency slider controls, and a low battery light.

Gain Control: The gain knob controls the volume of the preamp. Turning this knob all the way to the left will effectively silence the preamplifier. Turning it all the way to the right will produce the maximum output.

The Takamine G Series TP-E Pre Amp

The Takamine TP-E preamp is an easy way to get great amplified acoustic sound. Found exclusively on Takamine G-Series models, the TP-E features a simple, easy-to-use control layout that allows you to quickly dial in great sound, so you can concentrate on the most important part of your gig – the performance.

On the control panel you’ll find a Gain control, master Tone control, a Mid-Cut switch, and a built-in chromatic tuner. The Gain knob controls the overall volume of the preamp. The Tone knob controls the overall tonality of the sound, while the Mid-Cut switch allows you to reduce the mid frequencies for the popular “scooped-mid” sound. The onboard electronic tuner ensures you’re always in tune and ready for the next song.

Removal and Installation of Takamine Pre Amps

To release the preamp from the preamp frame

Step 1

First, to release the preamp from the preamp frame, you must depress the two clips located on the inner wall of the preamp frame. This is done by inserting a sturdy paperclip through the preamp slots as shown on the illustration. The clips are plastic and should release easily. Do not use excessive force as too much pressure can break the clips.

Slide the preamp out of the guitar body

Step 2

Once released from the frame, slide the preamp out of the guitar body. Disconnect plugs attached to the jacks on backside of the preamp. Note: to avoid damage to the wiring, do not pull the plugs out by the wire. Instead remove by grasping the plastic plug body. Install the plugs into the new preamp jacks. Takamine preamps use two different types of plugs for input and output - so an incorrect connection cannot be made.

When installing the new preamp

Step 3

When installing the new preamp, position it so that the battery compartment on the preamp is located on the side closest to the guitar neck. Slide the new preamp down into the preamp frame, until it snaps into the frame clips. Install battery and you are ready to play.

The Cool Tube and CT4B II preamps are both designed for use only in Pro Series Takamine guitars made in Japan. These are not compatible with G Series guitars and electronics.

The TK-40 and TP-4T preamps are both designed for use only in G Series model guitars and are not compatible with Pro Series Takamine guitars made in Japan.