User Instructions

This booklet contains important information concerning the proper and safe operation of your new amplifier..

EQUALIZER

Made in Taiwan

Index

01 Precautions

01 Introduction

02 Front Panel

02 Rear Panel

03 Audio Connections

03 Specifications

UNiKA

P R O F E S S I O N A L A U D I O

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EQUALIZER

Precautions Introduction

Front Panel Rear Panel Audio Connections Specifications

PRECAUTIONS

Before connecting the unit to the mains power, ensure that the operating voltage is correct for your local supply. It is important that you observe the following instructions if another voltage setting is required. Do not install this unit in a location subjected to excessive heat, dust or mechanical vibrations.

VOLTAGE SELECTION and POWER CONNECTION

Connection is made by means of an IEC standard power socket. The rear panel voltage label, indicates the voltage required for satisfactory operation of the unit.

Before connecting this unit to the mains supply, ensure the fuse fitted is the correct type and rating is as indicated on the rear panel, adjacent to the fuse holder.

*Mains voltage change should be carried out by a qualified service technician only.

SAFETY WARNING

This unit is fitted with 3-pin power socket: For safety reasons the earth lead should not be disconnected.

Signal 0V is referenced internally to chassis via a resistor capacitor network which provides earth loop immunity. To prevent shock or fire hazard, do not expose the unit to rain or moisture. To avoid electrical shock do not remove covers. Refer servicing to qualified personnel only.

ATTENTION!

Cables: This product should only be used with high quality, screened twisted pair audio cables, terminated with metal bodied 3-pin XLR connectors. The cable should be connected to pin 1. Any other cable type or configuration for the audio signals may result in degraded performance due to electromagnetic interference.

Electric Fields: Should this product be used in an electromagnetic field that is amplitude modulated by an audio frequency signal (20Hz to 20kHz), the signal to noise ratio may be degraded. Degradation of up to 60dB at a frequency corresponding to the modulation signal may be experienced under extreme conditions (3V/m, 90% modulation).

INTRODUCTION

The graphic equaliser is a vital component in any audio system. The entire signal passes through it and so any limitations imposed by the equaliser will compromise the performance of the whole system. For example, an indifferently designed equaliser may introduce severe phase distortion, noise and other anomalies related to centre frequency accuracy, filter shape and attenuation accuracy which may manifest themselves as an overall deterioration in the perceived sound quality of the system. Clearly, this is an unacceptable state of affairs, but fortunately your choice to utilise a UNiKA KT-360 graphic equaliser will eliminate these problems, offering you unprecedented product performance coupled with the highest filter calibration and reliability standards in the industry.

The KT-360 equaliser is a direct result of this research.

It should be noted that graphic equalisation cannot always overcome all frequency response related problems. There are applications where the ability to cut and boost the response at a particular frequency, or over a certain bandwidth other than the equaliser specified one, is required to overcome exceptionally difficult response anomalies or narrow band feedback problems.

When such an instance is encountered, it may be more appropriate to use the greater range of control provided by a parametic type equaliser, where the centre frequency, bandwidth and amplitude are all controllable.

When using an equaliser remember that the need to use large amounts of booth or that within the equalisation curve indicates that there may be something fundamentally wrong with the sound system or room acoustics, which should be further investigated and corrected before final equalisation is applied.

EQUALIZER

Precautions Introduction

Front Panel Rear Panel

Audio Connections Specifications

FRONT PANEL

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1. The high quality faders - used in this equaliser have an oil-damped action for smooth operation and feature a centre detent following accurate "flat" setting.

2. The scale switch selects - maximum boost and cut for the equaliser of either 6dB or 12dB. The centre position of this switch performs the bypass function, which silently removes the graphic equaliser section from the signal path.

a high average input signal, can occasionally cause this level to be exceeded. In this event, the input level control should be turned down to correct the problems.

However, if the input signal itself exceeds +19dBu the input stage will be overloaded. If this problem arises, the signal level from the output of the preceding piece of equipment must be turned down.

5. High cut filter - switch enables a 20KHz subsonic filter to be connected in or out of circuit.

3. Low cut filter - switch enables a 30Hz subsonic filter to be connected in or out of circuit.

4. The Overload LED - The signal level is monitored at several separate points within the circuitry of the unit, and any one of these signals exceeding a threshold, set

3dB below clipping, will cause the LED to light. This threshold is set at +19dB, but it must be remembered that excessive boost of some frequencies combined with

6. The input level control - allows the system gain to be up to+6dB when in its fully clockwise position, and offers full attenuation in its anti-clockwise position.

7. The power switch - is a two pole type, isolating both the live and neutral conductors. When the power is on, a red status LED lights.

FRONT PANEL

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1. The mains fuse - is located in a fuse holder, fitted to the rear panel. Always replace with the correct type and

4. Input connections - are made via complementary XLR style sockets or 1/4" TRS phone jack.

rating of fuse, as indicated adjacent to the fuse holder.

2. Main - is supplied via an IEC standard 3 pin connector. A compatible power cable is supplied with the unit.

5. Output connections - are made via complementary

XLR style sockets or 1/4" TRS phone jack.

3. The serial number - of this unit should be quoted in any correspondence concerning the unit.

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EQUALIZER

Precautions Introduction Front Panel Rear Panel

Audio Connections Specifications

AUDIO CONNECTIONS

Input

The input circuitry is a transformerless, electronically balanced design which achieves a symmetry of better than -50dB from 20Hz to

10kHz. If transformer balancing of the input is required, this must be stipulated at the time of order, it is not retro-fittable.

UNBALANCED BALANCED

Output

UNBALANCED BALANCED

The standard output is unbalanced, but balancing transformers are available and may be retrospectively fitted.

The output circuitry is capable of driving a 600 ohm load at a level of +22dBm.

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NOTE : When using a fully balanced system, either pin 2 or 3 may be the Hot terminal.

SPECIFICATIONS

INPUT

Type Transformer balanced

Impedance

Balanced 20k

Unbalanced 10k

OUTPUT

Type Transformerbalanced

Min. Load impedence 600

Source impedence

Max.Level +22dBu

FILTERS

Centre frequencies 2x30

ISO 25Hz -20kHz 1/3 octave

Tolerance ±5%

Maximum boost/cut ±6/12dB

High pass filter 18dB/OCTAVE -3dB@30Hz

Low pass filter 18dB/OCTAVE -3dB@20kHz

POWER REQUIREMENTS

Voltage 110/120/220/240V 50/60Hz

Consumption <15VA

Weight

Nett 5Kg

Shipping 6Kg

PERFORMANCE

Frequency response ±0.5dB(20Hz-20kHz)

Distortion(@+4dBm) <0.01% @ 1kHz

Equivalent input noise <-90dBu(20Hz-20kHz) unweighted

Channel separation >75 dB @1kHz

Overload indicator +19dBu

Level Control +6dB to -

DIMENSIONS

Width 482mm (19")

Depth 205mm (8")

Height 133mm (51/4")

TERMINATIONS

Input 3 pin XLR

Output 3 pin XLR

Power 3 pin ICE

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UNiKA

P R O F E S S I O N A L A U D I O

WWW: http://www.unika.com.tw

E-Mail: [email protected]

Tel : +886 2 2793-3017 Fax: +886 2 2792-8264

6F., No. 168, Xinhu 2nd Rd., Neihu Dist., Taipei City 114, Taiwan (R.O.C.)