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Hill Audio DX1500 User Manual

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Hill Audio DX1500 Specifications

General IconGeneral
S/N Ratio> 100 dB
Frequency Response20Hz - 20kHz (±0.5dB)
Input Impedance10kΩ
ProtectionShort circuit
Connectors (Input)XLR
Connectors (Output)Binding posts

Summary

Rack Mounting Amplifier

Back Panel Features

Front Panel Features

Technical Specifications

Operation Guide

Circuitry Overview

Details the unique transformer coupled driver stage and 'Super A' configuration for linear response.

Input Sensitivity Adjustment

Explains the multi-position control for setting input voltage to achieve rated power without clipping.

Connecting Input Signals

Covers accepted connectors (XLR, 1/4") and linking options for input signals.

Bridging Mode Operation

Describes the mono bridging mode, connecting both channels for single input.

AC Power Switch

Explains the function and position of the AC circuit breaker.

Grounding and Hum Isolation

Details the ground isolation switch for hum problems and AC ground connection.

Cooling System

Fan Operation Control

Explains servo-controlled fan speed based on temperature, starting at 40°C and full at 70°C.

Normal Operating Temperature

Discusses normal operation temperature and heatsink casing acting as a heatsink.

Amplifier Protection Features

Protection Relay Function

Describes the protection relay that shuts down the amplifier due to overdriving, short circuits, or malfunction.

Block Diagram Schematic