Related Manuals for Neumann KH 750 DSP
Summary of Contents for Neumann KH 750 DSP
- Page 1 KH 750 DSP Active Subwoofer with 2.0 / 0.1 Bass Management™ Instruction Manual georg neumann gmbh · leipziger str. 112 · 10117 berlin · germany publ. 01/19 tel +49 (0)30 / 41 77 24-0 · fax -50 · headoffice@neumann.com · www.neumann.com...
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Page 2: Table Of Contents
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Installing and connecting the KH 750 DSP . -
Page 3: The Kh 750 Dsp Subwoofer
About this manual This operating manual describes the physical setup and autonomous operation of the KH 750 DSP . For information about using the KH 750 DSP in a network please refer to the very helpful Neumann .Control software . -
Page 4: Product Overview
Product overview 1 Neumann logo 2 Metal grille KH 750 DSP | 4... - Page 5 • green = on ANALOG INPUT | RIGHT/B • red = protection active 0 BNC sockets • amber = indication DIGITAL | AES3 INPUT I CONTROL MODE switch DIGITAL | AES3 OUTPUT J CHANNEL B INPUT MODE switch KH 750 DSP | 5...
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Page 6: Installing And Connecting The Kh 750 Dsp
Always have the product mounted by a qualified specialist according to local, national and international regulations and standards . Use the mounting systems recommended by Neumann and always provide sufficient addi- tional protection against tipping or dropping by means of safety wires . -
Page 7: Preparing The Room
. For information on building a balanced system, please refer to the “Product Selection Guide” at www .neumann .com . The Neumann .Control software must be used to set up multiple subwoofer systems . KH 750 DSP | 7... -
Page 8: Positioning The Subwoofers
If you set up several subwoofers, you can utilize their mutual coupling to achieve an acoustical acoustical gain gain . The following acoustical gains are possible: Number of subwoofers Acoustical gain 0 .0 dB 6 .0 dB 9 .5 dB 12 .0 dB KH 750 DSP | 8... -
Page 9: Connecting The Subwoofer
The default signal selection is analog . If a valid digital signal is connected to the digital input this digital signal is automatically selected . In Neumann .Control it is possible to select between automatic signal switching, analog or digital . - Page 10 Connect the digital AES3 or S/P-DIF-output signal of your audio source to the DIGITAL INPUT socket 0 of the respective KH 750 DSP . See picture below . The KH 750 DSP subwoofer only supports non-encoded AES3 and S/P-DIF sig- nals .
- Page 11 For a simplified representation, the following connection examples show loudspeakers in com- bination with the KH 750 DSP subwoofer . Each of the examples only shows one possible com- bination of loudspeakers and subwoofers . For information on building a balanced system, please refer to the “Product Selection Guide”...
- Page 12 Note: Set the left loudspeaker input signal select to Digital A and the right loudspeaker select to Digital A and the right loudspeaker input signal select to digital B. input signal select to digital B. KH 750 DSP | 12...
- Page 13 DIGITAL AES3 INPUT DIGITAL AES3 OUTPUT DIGITAL IN DIGITAL IN Sub/LFE Sub/LFE ANALOG INPUT RIGHT/B Note: Set the center loudspeaker input signal Note: Set the center loudspeaker input signal select to Digital A select to Digital A KH 750 DSP | 13...
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Page 14: Connecting Network Cables
Ethernet cable (Cat 5 or better) . The maximum length of the cable is 100 m . Refer to the Neumann .Control software help for information about how to use subwoofers in a network . -
Page 15: Connecting/Disconnecting The Subwoofer To/From The Mains Power Supply
. The subwoofer mutes immediately when it is switched off . There is a five second delay before sound can be heard from the KH 750 DSP and the loudspeakers connected to the outputs in order to avoid noises (pops) from preceding equipment switched on at the same time . -
Page 16: Functionality Of The Back Panel Lights
Protection system is activated (takes priority over Power LED red other indications) Neumann.Control Alignment Setup: Identify the Subwoofer Power LED flashing amber Guided Alignment: Subwoofer is selected Power LED flashing amber Manual Alignment: Subwoofer is selected Power LED flashing amber KH 750 DSP | 16... -
Page 17: Auto Standby Switch
AUTO STANDBY switch If the AUTO STANDBY switch G has been set to ON, the KH 750 DSP will switch to standby after 90 minutes without an input signal . Standby means that the network interface, signal processing circuitry and power amplifiers are all powered down . -
Page 18: Calibrating The Subwoofer
To do so, choose one of the following methods: Alignment using Neumann .Control: It is highly recommended to use Neumann .Control to calibrate the loudspeakers and subwoofer in the room . Download the software and choose an Alignment method that suits your circumstances: Precision, Guided, Manual . - Page 19 Neumann loudspeaker: INPUT GAIN: “0 dB” and OUTPUT LEVEL: “100 dB SPL at 1 m for 0 dBu” . For information on how to set your Neumann loudspeaker, please refer to its operating manual . If the mentioned values cannot be set on your loudspeaker, adjust the subwoofer accordingly .
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Page 20: Compensating For Larger Time Of Flight (Tof) Differences
EQ setting . Calibration using the backplate controls and Neumann test signals Download the Neumann test signals and the instructions for use (PDF file, in English) from the KH 750 DSP product page at www .neumann .com . -
Page 21: Remote-Controlling The Bass Management
CHANNEL B INPUT MODE: The EXTERNAL BASS MANAGEMENT routing mode is used when there is a bass manager before the KH 750 DSP subwoofer, e . g . an AV amplifier with activated bass management and loud- EXTERNAL BASS MANAGEMENT speakers set to “small”... -
Page 22: Activating Ground Lift
. Keep all liquids away from the product . Before cleaning, disconnect the product from the mains power supply (see page 15) . Use a soft, dry, and lint-free cloth to clean the product . KH 750 DSP | 22... -
Page 23: Troubleshooting
. Remove the digital connection if analog signal should be replayed . For further information, please refer to the “Questions & Answers” section at www .neumann .com . KH 750 DSP | 23... -
Page 24: Specifications
Specifications For a complete list of the product specifications please refer to the product page of the KH 750 DSP at www .neumann . com . Product properties Mains voltage 100 to 240 V ~, 50/60 Hz Power consumption (idle / standby) 18 W / 0 .3 W... -
Page 25: Technical Information & Glossary
. The acoustical axis is located at the midpoint of the KH 750 DSP’s bass driver . Note that the subwoofer emits very low frequencies which are emitted omnidirectionally . That is why the orientation of the subwoofer cabinet in the room does not matter . - Page 26 SPL at 1 m Acoustical Neumann subwoofers are designed to have a flat pass band magnitude response in anechoic condi- response tions when all the acoustical controls are set to 0 dB . When a subwoofer is installed into a listening environment the response changes and thus should be corrected back to a flat response .
- Page 27 Signal rout- For both analog and digital signals, the KH 750 DSP has two input and two output channels: LEFT / A and RIGHT / B . After the electronically balanced or digital input stages, there are two 4th order 80 Hz high pass filters for the main channels followed by two electronically balanced and digital output stages .
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