SPL HPM Manuale utente
Content
Manual
HPm
Headphone Monitoring Amp in a Dual Slot 500 Series Rack Module
HPm
Content
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.
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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.
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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.
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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.
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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
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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.
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Control Elements
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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.
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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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