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Summary of Contents for Genelec 7260A
- Page 1 Operating Manual 760A, 770A and 771A DSP Subwoofers...
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Page 3: Ec Declaration Of Conformity
Manager GLM™ and the proprietary Genelec loudspeaker control network. Use with the GLM™ network is described in the DSP System Operating Manual. EC Declaration Of Conformity This is to certify that Genelec 760A, 770A and 771A DSP subwoofers conform to the following standards: Safety: EN 60065: 00 / IEC 60065:001 7th Edition... - Page 4 CONTROL” on switch group of each loudspeaker to position “STORED.” This manual concentrates on using the subwoofers without the control network. All issues concerning the control network are explained in detail in the System Operating Manual provided with the GLM™ Genelec Loudspeaker Manager kit.
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Page 5: Installation
Genelec loudspeaker control network. See the System Operating Manual for more information. The mains cable may only be connected to an earthed mains power supply. The “BYPASS” 1/4” Jack provides connection to the optional Genelec 109-400 switch to operate the Bypass function. See “DSP Subwoofer Features” for description of this function. -
Page 6: Cabling Examples
The “REMOTE” RJ 11 connector can be used to connect the optional Remote Power/OVL LED (Genelec 7000-415) or 7000-416 Remote control switch for "Bypass" and "+10 dB LFE" functions. Cabling examples Stereo Pair with Subwoofer (AES/EBU Single-Wire) This setup has one AES/EBU cable that carries both the Left and Right audio channels with subframe A carrying the Left audio channel and subframe B carrying the Right audio channel. - Page 7 Run three AES/EBU cables from the source to the subwoofer AES/EBU inputs 1, and 4. Subwoofer input number is not used. Run the cables from the subwoofer AES/EBU outputs 1, and 4 to the digital audio inputs of the loudspeakers. The cable that carries the LFE channel must be connected to the subwoofer input number 4.
- Page 8 6.1 Surround System with Subwoofer (AES/EBU Single-Wire) This setup utilizes four AES/EBU cables to carry “6.1-audio”. “6.1” refers to having six full-bandwidth audio channels and an LFE channel. All cables run to the subwoofer first, then from the subwoofer to the six loudspeakers.
- Page 9 Run four AES/EBU cables from the source to the subwoofer AES/EBU inputs 1, , and 4. Run the cables from the subwoofer AES/EBU outputs 1, , and 4 to the digital audio inputs of the loudspeakers. The cable that carries the LFE channel must be connected to the subwoofer input number 4.
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Page 10: Aes/Ebu Input
Run two AES/EBU cables from the source to the subwoofer AES/EBU Inputs 1 and . Run two audio cables from the subwoofer AES/EBU outputs 1 and to the digital audio inputs of the left and right loudspeakers. The correct subframe must be selected in each loudspeaker. - Page 11 5.1 Surround System with Subwoofer (AES/EBU Dual-Wire) This setup supports six digital audio cables. The six cables customarily carry the Left, Center and Right Front channels and the Left and Right Rear channels and the LFE. The rear channels are not bass managed.
- Page 12 To begin, place the subwoofer at the front wall slightly offset from the center. The recommended distance to the wall is less than 60 cm / 4" measured from the subwoofer's driver. This position gives increased acoustic loading (and SPL) due to the proximity of the front wall and floor. Cancellations from the front wall and floor are also avoided.
- Page 13 The power amplifiers are attached to the lower part of the aluminium grille functioning as a heatsink. Do not cover the grille or place the subwoofer so that there is less than 10 centimeters (4") of free space in front of the grille. The space adjacent to the subwoofer must either be ventilated or sufficiently large to dissipate heat so that the ambient temperature does not rise above 5 degrees Celsius (95°F).
- Page 14 DSP SUBWOOFERS FEATURES Various controls and switches are accessible on the DSP subwoofer control panel. Let us define and explain here their use and function (from left to right): LFE INPUT 4 CONTROLS LFE in Use When producing audio content in multichannel audio formats, the use of the LFE channel is directly linked to the media release format and the type of production.
- Page 15 INPUT 4. Typically the LFE channel is paired with the Front Center channel, so one of the subframes of OUTPUT 4 carries the sum of the redirected LFE signal and the center channel signal. OUTPUT 4 should then be connected to the Front Center loudspeaker. Subwoofer input 4 Subframe A Subframe B...
- Page 16 Bypass The “BYPASS” section allows the use of an optional Genelec 109-400 remote bypass switch. This allows for remote control of the subwoofer’s bass management bypass function. The red “BYPASS” light is illuminated when the bypass mode is active.
- Page 17 (see table below). They are disabled because the subwoofer is being controlled through the GLM Control Network, or by the settings stored inside the memory of the subwoofer. If a disabled control on the panel is adjusted, all the lights on the connector panel flash rapidly to inform that the control is disabled and that the change has no effect.
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Page 18: Test Tone
Incorrect phase alignment between the loudspeakers and the subwoofer causes a drop in the frequency response around the crossover frequency. Acoustic measuring equipment such as Genelec AutoCal accurately align the phase. Alternatively, the following quick phase alignment process can be done:... -
Page 19: Subwoofer Level
All digital audio inputs and outputs are referenced to 0 dBFS (digital Full Scale, the largest possible signal that can be represented by an AES/EBU signal). Genelec DSP loudspeakers produce a sound pressure level of 100 dB (at one meter distance in free space) for a digital input signal of –0 dBFS. - Page 20 If the digital source can control the digital level, it may be advantageous to lower the sensitivity either with the GLM or the ”SYSTEM LEVEL” control of the DSP subwoofer. This will enable the use of the upper end of the digital level controller.
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Page 21: Maintenance
Free flow of air around the subwoofer is necessary to maintain sufficient cooling. Do not obstruct airflow around the subwoofer. WARNING! Genelec 760A, 770A and 771A subwoofers are capable of producing sound pressure levels in excess of 85 dB, which may cause permanent hearing damage. Guarantee Genelec 760A, 770A and 771A subwoofers are supplied with one year guarantee against manufacturing faults or defects that might alter the performance of the subwoofer. - Page 22 Bass Roll-Off control operating range in dB steps @ 0 Hz Phase matching control in 90° steps Subwoofer Level control System Level control 7260A 7270A 19 Hz - 100 Hz ≥ 108 dB SPL ≥ 11 dB SPL ≥ 11 dB SPL ≥...
- Page 23 Digital audio output impedance Digital audio format Digital audio word length Digital audio sample rate The free field frequency response of the 760A subwoofer at different Bass Roll-Off settings 7260A 7270A 4 XLR female 110 Ohm 4 XLR male 110 Ohm AES/EBU (AES-00)
- Page 24 Genelec Document D0057R001c. Copyright Genelec Oy 4. 007. All data subject to change.
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