Operating Manual 8240A and 8250A DSP Loudspeakers dsp
INTRODUCTION Congratulations and a thank-you for the purchase of this Genelec 8200 Series DSP Loudspeaker. These systems are designed to integrate easily into the digital production environment. There are several ways to configure and operate the DSP loudspeakers for a wide variety of high quality audio applications. The loudspeakers also have analog inputs, making them versatile and intelligent replacements for analog loudspeakers.
harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
USING THE 8240A AND 8250A IN STAND-ALONE MODE The 8240A and 8250A accept both analogue line level input signals and AES/EBU formatted digital input signals. When the 8240A and 8250A are not connected to Genelec loudspeaker control network, they operate in the stand-alone mode.
“DIGITAL IN AES/EBU” connector Use this female XLR connector for AES/EBU formatted digital audio input signals. This input is selected automatically when a valid digital audio signal is present, and overrides the analogue input. Depending on the digital hardware, transmission of a 192 kHz sample rate is achieved using a double speed, single channel/cable interface. This is called dual-wire mode. In this case one cable per channel is used and no channel selection is required.
The overload light (red) is activated by several events, • exceeding the maximum input range of the analog input • exceeding the maximum input range of the digital input with large probability • exceeding the output capacity of the power amplifier (clipping in the power amplifier) and thermal overload of the power amplifier or loudspeaker drivers (thermal protection has activated) • if an error is detected in the AES/EBU audio data If a red warning light appears, turn the analog source down! If the levels a
Mounting options The vibration insulating Isolation Positioner/Decoupler™ (Iso-Pod™) table stand allows tilting of the loudspeaker for correct alignment of the acoustic axis. The stand can be attached to three mounting points allowing vertical and symmetrical horizontal positioning. Genelec 8240A and 8250A can be fitted to König & Meyer loudspeaker mounts on two sets of M6x10 mm threaded holes on the back of the enclosure.
This feature is designed to compensate for the boost often occurring at this frequency range when the loudspeaker is placed upon a meter bridge, table or similar reflective surface. Treble Tilt control Treble Tilt control (switches 6 and 7) allows adjusting the treble response above 5 kHz by +2 dB, -2 dB or -4 dB, which can be used for correcting an excessively bright or dull sounding system or to compensate for high frequency level loss if the loudspeaker is placed behind a screen.
Functions on Switch Group 2 Stored / Manual Ctrl This allows the selection between two basic methods of controlling the loudspeaker in the stand-alone mode. “MANUAL CTRL” refers to controlling the loudspeaker using the controls on the loudspeaker’s back panel. The “STORED” refers to using settings stored inside the memory of the loudspeaker. These settings are made using the GLM and the GLM Control Network.
• • • • • • • Connect the GLM Control Network to the main loudspeakers. Make a System Setup in GLM. It will consist of main loudspeakers as this is all the network can see, so suitable Rapid Cabling Presets are “Stereo Pair (Analog)” and “5.0 Surround System (Analog)”. Run AutoCal and review and the results to check for large dips at or above 85Hz. Move the loudspeakers and repeat AutoCal if there is a problem.
Guarantee Genelec 8240A and 8250A are supplied with one year guarantee against manufacturing faults or defects that might alter the performance of the loudspeakers. Refer to supplier for full sales and guarantee terms.
SPECIFICATIONS 8240A 8250A Lower cut-off frequency, -3 dB Upper cut-off frequency, -3 dB ≤ 45 Hz ≥ 21 kHz ≤ 35 Hz ≥ 21 kHz Free field frequency response of system (± 1.0 dB) 48 Hz - 20 kHz 38 Hz - 20 kHz Maximum short term sine wave acoustic output on axis in half space, averaged from 100 Hz to 3 kHz @1m @0.
8240A 8250A Analog audio input connector XLR female, pin 1 gnd, pin 2 +, pin 3 - Analog audio input impedance 10 kOhm balanced Input level for maximum short term output of 100 dB SPL @ 1m Adjustable from +6 to -6 dBu Crossover frequency, Bass/Treble 3.0 kHz 1.
The curves above show the effect of the “Bass Tilt”, “Treble Tilt”, “Desktop Low Frequency” and “Bass Roll-Off ” controls on the free field response of the 8240A. The upper curve group shows the horizontal directivity characteristics of the 8240A measured at 1 m. The lower curve shows the system's power response. The curves above show the effect of the “Bass Tilt”, “Treble Tilt”, “Desktop Low Frequency” and “Bass Roll-Off ” controls on the free field response of the 8250A.
Genelec Document D0048R001a. Copyright Genelec Oy 3.2006.
