SPL HPM Manuel utilisateur

Content

Manual

HPm

Headphone Monitoring Amp in a Dual Slot 500 Series Rack Module

HPm

Content

Content 2

Version 1.0 – 09/2016 3

Scope of Delivery 4

Measurement & Weight 4

Introduction 5

Welcome 5

Specifications 6

General 6

Input 6

Output 6

Installation 7

Installation into a 500 series rack 7

Control Elements 8

Phase Inversion Ø 9

Crossfeed 10

Speaker Angle 11

Volume 12

Stereo/Mono/Mute 13

Matrix On/Off 14

Center Level 15

Headphone Jacks 16

Phonitor Matrix 17

Basics of stereo listening 17

Stereo listening with an “traditional“ headphone preamplifier 18

How does the Phonitor Matrix work? 19

Setting of Crossfeed and Speaker Angle 20

Symbols 21

Security Advices 22

Declaration of CE Conformity 27

Notes on Environmental Protection 28

Contact 29

Note:

Click on a section or page number to immediately jump to that location.

HPm

Content

Version 1.0 – 09/2016

Developer: Bastian Neu

This manual contains a description of the product. In no way it represents a guarantee

of particular characteristics or results of use.

The information in this document has been carefully compiled and verified and, unless

otherwise stated or agreed upon, correctly describes the product. Sound Performance

Lab (SPL) continuously strives to improve its products and reserves the right to modify

the product described in this manual at any time without prior notice.

This document is the property of SPL and may not be copied or reproduced in any man-

ner, in part or fully, without prior authorization by SPL.

HPm

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Scope of Delivery

HPm – 500 Series Rack Module

Quickstart/Product Overview

Measurement & Weight

Dual Slot 500 Series Rack Module

Weight: 1.76 lbs (0.8 kg)

Please keep the original packaging. In a service case the original packaging ensures a safe transport.

HPm

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Introduction

Welcome

and thank you for purchasing the Headphone Monitoring Amp HPm. With the HPm the

Phonitor Matrix is making headway into the world of 500 series rack modules.

Each of the two headphone outputs is fed with a separate amplifier to allow independent

operation of two headphones with high-quality amplification.

With the Phonitor Matrix you control Crossfeed, Speaker Angle and Center Level to create

speaker-like listenig and monitoring on headphones.

The HPm can easily be inserted between the DAW and a monitor controller because the

input signals of the HPm are slaved through to the outputs of the 500 series rack.

Phase Inversion of left or right channel as well as a Stereo/Mono/Mute switch round off

the feature set of the HPm.

HPm

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Specifications

General

Frequency Response: 10 Hz - ›100 kHz

Noise: -92.3 dBu (A-weighted)

Total Harmonic Distortion: 0,0024% (0dBu output level//600 Ohm)

Current consumption: 260 mA at +/- 16 VoltDC

Input

Electronically balanced

Impedance: approx. 10 kOhm

Max. Input Level: +21dBu

Output

Max. Output Level:

+18 dBu @ 600 Ohm

+15 dBu @ 300 Ohm

HPm

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Installation

Installation into a 500 series rack

• Please read the manual that comes with the 500 series rack. You should gain all

information necessary for the installation process.

• Your 500 series rack should be switched off and the power cable should not be

connected.

• Insert the HPm module into two adjacent free slots of your rack. Make sure the con-

nectors of the HPm is precisely aligned with the rack connectors.

• Press the HPm module carefully into the rack connectors and tighten the screws.

• Connect the HPm module with your audio environment using the connections from

your 500 series rack.

• Insert the power cable to the 500 series rack and switch it on.

Note: The HPm can easily be inserted between the DAW and a monitor controller because

the input signals of the HPm are slaved through to the outputs of the 500 series rack.

HPm

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Control Elements

HPm

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Control Elements

Phase Inversion Ø

With the Phase Inversion switch you invert the phase of the left or the right channel

(180°). In position “L” the phase of the left channel is inverted. In position “R” the phase

of the right channel is inverted.

In position “Off” no channel is phase inverted.

The phase inversion is used to check whether phantom center signals are precisely

positioned in the stereo center. Invert the phase of one channel and engage mono. All

phantom center signals should disappear.

HPm

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Control Elements

Crossfeed

The Crossfeed defines the interaural level difference. It approximates the influences of

room size, reflections and absorption characteristics of the room your speakers are in.

The higher the Crossfeed the more the stereo image is shrinking. To mimic a dry room

use lower Crossfeed settings whereas to mimic a wet room the Crossfeed should by set

to higher values.

See also “Phonitor Matrix” on page 17 cont.

Youl’ll find more information about the setting of Crossfeed and Speaker Angle under

“Setting of Crossfeed and Speaker Angle” on page 20.

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