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Summary of Contents for SPL HPM
- Page 1 Manual Content Headphone Monitoring Amp in a Dual Slot 500 Series Rack Module...
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Page 2: Table Of Contents
Content Note: Click on a section or page number to immediately jump to that location. Content Phonitor Matrix Version 1.0 – 09/2016 Basics of stereo listening Scope of Delivery Stereo listening with an “traditional“ headphone preamplifier 18 Measurement & Weight How does the Phonitor Matrix work? Setting of Crossfeed and Speaker Angle Introduction... -
Page 3: Version 1.0 - 09/2016
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. -
Page 4: Scope Of Delivery
Scope of Delivery – 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. Content... -
Page 5: Introduction
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. -
Page 6: Specifications
Specifications General Frequency Response: 10 Hz - › 100 kHz Noise: -92.3 dBu (A-weighted) Total Harmonic Distortion: 0,0024% (0 dBu output level//600 Ohm) Current consumption: 260 mA at +/- 16 Volt DC Input Electronically balanced Impedance: approx. 10 kOhm Max. Input Level: +21 dBu Output Max. -
Page 7: Installation
• 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. -
Page 8: Control Elements
Control Elements Phase Inversion Ø Stereo/Mono/Mute Crossfeed Phonitor Matrix Center Level Speaker Angle Volume Headphone Jacks Content... -
Page 9: Phase Inversion Ø
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”... -
Page 10: Crossfeed
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. -
Page 11: Speaker Angle
Control Elements Speaker Angle With the Speaker Angle switch you adjust the interaural time difference which is related to the placement of the speakers. You can choose one of three angle values: 20°, 30° and 40°. 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”... -
Page 12: Volume
Control Elements Volume With these two detended controls you regulate the amplification for each headphone output individually. Content... -
Page 13: Stereo/Mono/Mute
Control Elements Stereo/Mono/Mute The headphone playback can be switched between Stereo and Mono. In the Mute posi- tion no signal passes through to the headphones. In Mono position the Mono compatibility can accustically be checked. Voices and instru- ments which appear quieter or disappear completely in mono have phase problems within the stereo signals. -
Page 14: Matrix On/Off
With the Matrix switch you activate or deactivate the Phonitor Matrix (Crossfeed, Speaker Angle and Center Level). If switched off the settings of Crossfeed, Speaker Angle and Center Level have no influence on the headphone playback and the HPm operates as a “normal” headphone amplifier. Content... -
Page 15: Center Level
Control Elements Center Level With the Center Level you control the monitoring intensity of the signals positioned in the phantom center. If the stereo width is narrowed through changes in Crossfeed and Speaker Angle (so as to correspond to your actual loudspeaker setup), the phantom center may likely sound too intense while mixing on headphones. -
Page 16: Headphone Jacks
Control Elements Headphone Jacks Connect headphones to the standard 1/4” (TRS) stereo jack plugs. Warning: Never connect a mono jack cable to the headphone output (front panel stereo jack). Make sure that the stereo jack is fully inserted, otherwise a short circuit might damage the headphone amplifier! Content... -
Page 17: Phonitor Matrix
Phonitor Matrix Basics of stereo listening When listening to speakers sound coming from the right is not only perceived with the right ear (red line) but it is also perceived with the left ear (green line). The sensation is time delayed, lower in level and has a reduced frequency range (this applies to the left speaker accordingly). -
Page 18: Stereo Listening With An "Traditional" Headphone Preamplifier
Phonitor Matrix Our brain determines the direction of the sound by perceiving the time delay (interaural time difference) and the level difference (interaural level difference). Stereo listening with a “traditional“ headphone pre- amplifier When listening to music with a “traditional” headphone amplifier, the right ear only perceives the right signal (red line) and the left ear only perceives the left signal (green line). -
Page 19: How Does The Phonitor Matrix Work
Phonitor Matrix How does the Phonitor Matrix work? The Phonitor Matrix calculates the interaural time difference (Speaker Angle) and inter- aural level difference (Crossfeed) with their specific frequency responses to deliver a speaker-like listening experience on headphones. The super-stereo-effect is eliminated and all reverb and delay effects as well as EQ and panorama adjustments are perceived correctly on headphones. -
Page 20: Setting Of Crossfeed And Speaker Angle
Phonitor Matrix Setting of Crossfeed and Speaker Angle Both parameters (Crossfeed and Speaker Angle) define the interaural level difference and the interaural time difference. To reproduce the exact placement of the loudspeakers, first choose the Speaker Angle parameter representing your real speaker placement. Then play some audio you know well. -
Page 21: Symbols
Symbols Exclamation mark within a triangle An exclamation mark within a triangle is intended to make you aware of important oper- ational advice and/or warnings that must be followed. Be especially attentive to these and always follow the advice they give. Lightning symbol within a triangle In this Manual a lightning symbol within a triangle warns you about the potential for dangerous electrical shocks –... -
Page 22: Security Advices
Security Advices Connections Only use the connections as described. Other connections can lead to health risks and damage the equipment. Water and humidity Do not use this device anywhere near water (for example in a bathroom, a damp cellar, near swimming pools, or similar environments). Otherwise your are dealing with an extremely high risk of fatal electrical shocks! Insertion of objects or fluids Be careful to not insert any object into any of the chassis openings. - Page 23 Opening the unit Simply put: DON’T, if you are not a certified SPL technician or engineer. Really: Do not open the device housing, as there is great risk you will damage the device, or – even after being disconnected –...
- Page 24 Security Advices Power connection overloads Avoid any kind of overload in connections to wall sockets, extension or splitter power cords, or signal inputs. Always keep manufacturer warnings and instructions in mind. Overloads create fire hazards and risk of dangerous shocks. Lightning Before thunderstorms or other severe weather, disconnect the device from wall power;...
- Page 25 Security Advices Controls and switches Operate the controls and switches only as described in the manual. Incorrect adjustments outside safe parameters can lead to damage and unnecessary repair costs. Never use the switches or level controls to effect excessive or extreme changes. Repairs Unplug the unit from all power and signal connections and immediately contact a quali- fied technician when you think repairs are needed –...
- Page 26 Security Advices Replacement/substitute parts Be sure that any service technician uses original replacement parts or those with iden- tical specifications as the originals. Incorrectly substituted parts can lead to fire, electrical shock or other dangers, including further equipment damage. Safety inspection Be sure always to ask a service technician to conduct a thorough safety check and ensure that the state of the repaired device is in all respects up to factory standards.
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Page 27: Declaration Of Ce Conformity
The content of this document is protected under copyright law. This document is the property of SPL and may not be copied or reproduced in any manner, in part or fully, without prior authorization by SPL. 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. -
Page 28: Notes On Environmental Protection
Notes on Environmental Protection At the end of its operating life, this product must not be disposed of with regular house- hold waste but must be returned to a collection point for the recycling of electrical and electronic equipment. The wheelie bin symbol on the product, user’s manual and packaging indicates that. The materials can be reused in accordance with their markings. -
Page 29: Contact
Contact Contact SPL electronics GmbH Sohlweg 80 41372 Niederkrüchten Germany Phone +49 2163 9834-0 +49 2163 9834-20 E-Mail: info@spl.info Or follow us on our Blog, Facebook, Twitter and YouTube: Website & Blog: spl.info Videos: youtube.spl.info Twitter: twitter.spl.info Facebook: facebook.spl.info Content...