Korg TP-2 owner manual Introduction, Features, Parts and their function

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Introduction

Thank you for purchasing the Korg TP-2 Dual Tube Preamp w/ Optical Compression and Digital Output. In order to enjoy long and trouble-free use, please read this ownerÕs manual carefully, and use your TP-2 only as directed.

If you are using a guitar or the line output from an instrument, connect it to the TRS phone jack.

Balanced phone plug

 

Unbalanced phone plug

 

GND COLD HOT

GND HOT

Features

The TP-2is a dual-channel preamp featuring two 12AX7 vacuum tubes, plus fast operating and transparent optical compression and limiting circuitry. Designed to accept a variety of sources over a wide range of levels, it is ideal for your most critical and demanding recording applications.

In addition to both XLR and 1/4Ó TRS balanced outputs, the TP- 2 also features both optical and coaxial digital outputs (S/P DIF format) allowing it to interface with other digital equipment, or to serve as a stand alone AD converter.

Using a specially tuned version of our acclaimed Valve Force circuit, the TP-2delivers the robust, musical warmth and mid- low region presence typical of vacuum tubes. The optical compression responds quickly and transparently, providing a distinctly full analog body without adversely coloring the sound. In addition, the optical compressorÕs gain reduction and limiting circuitry allow you to avoid any audio clipping while youÕre recording.

1. Parts and their function

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1.INPUT 1, INPUT 2 jacks

These are balanced inputs that combine XLR jacks and 1/4Ó TRS phone jacks.

Unbalanced phone plugs may also be connected to the 1/4Ó jacks.

If you are using a condenser mic requiring phantom power, connect it to the XLR jack.

XLR jack

2: HOT

1: GND

 

3: COLD

1/4" TRS phone jack

2.Phantom power switch/LED

This switch supplies +48V phantom power to condenser mics. The LED will light if +48V power is being supplied. Power is supplied only to the XLR jack. Turn this off (LED dark) if youÕre using a dynamic mic.

If a condenser mic is connected or disconnected with the phantom power switch on, damage to your equipment may occur. For this reason, always turn the phantom power switch off before connecting or disconnecting a condenser mic.

3.Phase switch

If you are inputting a stereo source from audio equipment in which the hot and cold pins are wired in reverse, the stereo image may be unsteady or cancellation may occur. By pressing this switch in, you can invert the phase of the input signal by 180 degrees to compensate.

4.Gain trim knob

This knob adjusts the input gain. If the PAD switch is on (pushed in), the range is +14 Ð Ð34 dBu. If the PAD switch is off, the range is Ð12 Ð Ð60 dBu.

5.Hi-Z switch

This switch changes the impedance level of the TRS phone jack to high impedance. It is on when the switch is pushed in. Turn this switch on when connecting a high output impedance device such as guitar or bass.

6.PAD switch

This switch lowers the level of the input signal by 26 dB. The pad is on when the switch is pushed in. When a line level input source is connected, turning the pad on will allow the gain trim knob to have a wider useful range of adjustment.

7.Compressor mode switch

This switch changes the compressorÕs response speed. Use the Fast setting for short sounds such as drums or percussion, and the Slow setting (press the switch in) for more sustained sounds, such as vocals.

8.Low cut switch

This switch activates a 70 Hz Ð6 dB/oct low cut filter.

Use this to reduce unwanted low-frequency content. The filter is on when the switch is pressed in.

9.Level meter

The meter shows the audio level. If the needle moves into the red area above 0 dB, this indicates that digital clipping is occurring.

Set the gain trim knob and the compressor sensitivity knob to prevent the needle from exceeding 0 dB.

Place the unit horizontally so that the level meters operate correctly.

The level meters indicate the level of the signal before it is sent to the output level faders.

10.Gain reduction LED

This LED will light when gain reduction is being applied by the compressor.

11. Compressor sensitivity knob

This specifies the audio level where the compressor begins to kick in. Turning the knob toward the right will increase the sensitivity, so that compression will be applied even at low levels.

If you donÕt want to apply compression, turn this knob all the way to the left.

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Contents Handling Power supplyLocation Interference with other electrical devicesBlock diagram SpecificationsFeatures IntroductionParts and their function Operation Adjusting the input levelUsing the compressor Using the link switch