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Creek Audio OBH-15 Mk2 User Manual

Creek Audio OBH-15 Mk2
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Creek Audio OBH-15 Mk2 Specifications

General IconGeneral
TypePhono Preamplifier
Frequency Response20Hz - 20kHz
Input Impedance MM47k Ohms
Input Capacitance MM100pF
Input Impedance MC100 Ohms
Gain MM40 dB
Gain MC60 dB
Signal to Noise Ratio MM> 80 dB
Signal to Noise Ratio MC> 70 dB
Outputs1 x RCA
Inputs1 x RCA
Power Supply24V DC
RIAA Accuracy±0.5dB
Output Impedance (Phono Preamplifier)100Ω

Summary

Operating Instructions

Product Function and Overview

Explains the OBH-15 Mk2's purpose: boosting phono cartridge signals for amplifiers.

Connection Guide

Guides on connecting the turntable to the OBH-15 Mk2 and the unit to the amplifier.

Output Level and Cable Considerations

Discusses the unit's ability to drive long cables and its output level relative to other sources.

Input and Gain Configuration

Rear Panel Layout

Identifies the MC/MM inputs, Ground, Output, and power connection on the rear panel.

DIP Switch Settings Overview

Details the DIP switch functions for MM/MC input selection, gain, and loading options.

Moving Magnet (MM) Setup

Instructions for MM cartridges, including connection, gain, and capacitance settings.

Moving Coil (MC) Setup

Instructions for MC cartridges, including input, gain, resistance, and capacitance settings.

High Output MC Configuration

Explains configuration for High Output MC cartridges, often using the MM input.

MC Gain Adjustment Details

Guides on achieving MC gains (60-80dB) by combining stage gains.

Gain Setting Best Practices

Advises against excessively high gain to maintain headroom and prevent distortion.

IEC Roll-off Filter Functionality

Describes the rumble filter's purpose and how to activate it via switches 5 & 6.

Grounding and Power Supply

Explains the ground terminal and the 24V DC power supply unit requirements.

Critical Safety and Handling Notes

Crucial warnings on connecting/disconnecting and volume adjustments during operation.

Technical Specifications

Performance Specifications

Details THD+noise, Signal to Noise, Channel Separation, and Overload Margin.

Output, Impedance, and Gain

Lists maximum output level, output impedance, and available gain settings.

Cartridge Matching and Physical Data

Provides recommended cartridge matching values, unit dimensions, weight, and power consumption.

Warranty and Service Information

United Kingdom Warranty Terms

Outlines the warranty coverage, validity, and limitations within the UK.

International Service Procedures

Guides for obtaining service and support for Creek products outside the United Kingdom.

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