8020B - Speaker COWON - Free user manual and instructions

USER MANUAL 8020B COWON

8020B Operating Manual 2-7 Betriebsanleitung 8-13 Manuel d’utilisation 14-19 Käyttöohje 20-26 Bruksanvisning 25-312 English General description The bi-amplified GENELEC 8020B is an extremely compact two way active monitoring loudspeaker designed for near field monitoring, mobile vans, broadcast and TV control rooms, surround sound systems, home studios, multimedia applications and also for use with computer soundcards. As an active loudspeaker, it contains drivers, power amplifiers, active crossover filters and protection circuitry. The MDE™ (Minimum Diffraction Enclosure™) loudspeaker enclosure is made of die-cast alumin- ium and shaped to reduce edge diffraction. Com- bined with the advanced Directivity Control Wavegui-

), this design provides excellent fre- quency balance in difficult acoustic environments. If necessary, the bass response of the 8020B’s can be extended with a Genelec 7050B subwoofer. Positioning the loudspeaker Each 8020B monitor is supplied with an integrated amplifier unit, mains cable and an operating manual. After unpacking, place the loudspeaker in its required listening position, taking note of the line of the acous- tic axis. The axes of all loudspeakers should converge at ear height at the listening position (see Figure 1). Connections Before connecting up, ensure that the loudspeakers and the signal source have been switched off. The power switch of the 8020B is located on the back panel (see Figure 3). Connect the loudspeaker to an earthed mains connection with the supplied mains cable. Never connect the loudspeaker to an un- earthed mains supply or using an unearthed mains cable. Audio input is via a 10 kOhm balanced fe- 8020B Active Monitoring SystemEnglish 3 male XLR connector. An unbalanced source may be used as long as pin 3 is grounded to pin 1 at the unbalanced source connector (see Figure 2). Never connect the 8020B to the loudspeaker out- puts of a power amplifier or an integrated amplifier or receiver. Once the connections have been made, the loudspeakers are ready to be switched on. Volume control The input sensitivity of the loudspeakers can be matched to the output of the mixing console or other signal source by adjusting the volume control on the front panel. Setting the tone controls The frequency response of the Genelec 8020B can be adjusted to match the acoustic environ- ment by setting the tone control switches on the rear panel. The controls are “Treble Tilt”, “Bass Tilt” and “Bass Roll-Off”. An acoustic measuring system such as WinMLS or comparable is recom- mended for analyzing the effects of the adjust- ments, however, careful listening with suitable test recordings can also lead to good results if a test system is not available. Table 1 overleaf shows some examples of typical settings in vari- ous situations. Figure 4 shows the effect of the controls on the anechoic response. Figure 1: Location of the acoustic axis Figure 2: Type of cable needed if unbalanced source is used (ex- ample shown is RCA output to the XLR input) Figure 3: Control and connector layout on the rear panel of an 8020B.4 English Treble Tilt Treble Tilt control (switch 1) attenuates the treble response of the loudspeaker at frequencies above 5 kHz by 2 dB, which can be used for smoothening down an excessively bright sounding system. Bass Tilt Bass Tilt control offers three attenuation levels for the bass response of the loudspeaker below 2 kHz, usually necessary when the loudspeakers are placed near a wall or other room boundaries. The attenuation levels are -2 dB (switch 3 “ON”), -4 dB (switch 4 “ON”) and -6 dB (both switches “ON”). Bass Roll-Off Bass Roll-Off (switch 2) activates high-pass filter- ing at 85 Hz to complement the low-pass filters of a Genelec 7050B or 7050A subwoofer. This switch should always be set to “ON” when using the 8020B with these subwoofers. The factory setting for all tone controls is “OFF” to give a flat anechoic response. Always start ad- justment by setting all switches to “OFF” position. Measure or listen systematically through the dif- ferent combinations of settings to find the best fre- quency balance. Mounting considerations Align the loudspeakers correctly Always place the loudspeakers so that their acoustic axes (see figure 1) are aimed towards the listening position. Only vertical placement is preferred, as it minimises acoustical cancellation problems around the crossover frequency. Maintain symmetry Check that the loudspeakers are placed sym- metrically and at an equal distance from the listening position. If possible, place the sys- tem so that the listening position is on the cen- terline of the room and the loudspeakers are placed at an equal distance from the centerline. Minimise reflections Acoustic reflections from objects close to the loud- speakers like desks, cabinets, computer moni- tors etc. can cause unwanted colouration blurring of the sound image. These can be minimised by placing the loudspeaker clear of reflective sur- faces. For instance, putting the loudspeakers on stands behind and above the mixing console and tilting them down to point the acoustic axes to ear Table 1: Suggested tone control settings for differing acoustical environments Loudspeaker Mounting Position Treble Tilt Bass Tilt Bass Roll-Off Flat anechoic response OFF OFF OFF Free standing in a damped room OFF OFF OFF Free standing in a reverberant room OFF -2 dB OFF Near field or console bridge OFF -4 dB OFF Near to a wall OFF -6 dB OFF With a 7050B subwoofer See above See above ONEnglish 5 level at the listening position usually gives a better result than placing the loudspeakers on the meter bridge. Minimum clearances Sufficient clearance for cooling of the amplifier and functioning of the reflex port must be ensured if the loudspeaker is installed in a restricted space such as a cabinet or integrated into a wall struc- ture. The surroundings of the loudspeaker must always be open to the listening room with a mini- mum clearance of 3 centimeters (1

”) behind, above and on both sides of the loudspeaker. The space adjacent to the amplifier must either be ven- tilated or sufficiently large to dissipate heat so that the ambient temperature does not rise above 35 degrees Celsius (95°F) Mounting options The Genelec 8020B offers several mounting options: The Iso-Pod™ (Isolation Positioner/ Decoupler™) vibration insulating table stand allows tilting the loudspeaker for correct align- ment of the acoustic axis. On the base of the loudspeaker is a 3/8” UNC threaded hole com- patible with a standard microphone stand. On the rear there are two M6x10 mm threaded holes for Omnimount

size 20.5 brackets or the keyhole wall mount adapter provided with the loudspeaker. Maintenance No user serviceable parts are to be found within the amplifier unit. Any maintenance or repair of the 8020B unit should only be undertaken by qualified service personnel. Safety considerations Although the 8020B has been designed in accord- ance with international safety standards, the fol- lowing warnings and cautions should be observed to ensure safe operation and to maintain the loud- speaker under safe operating conditions:

• Servicing and adjustment must only be performed by qualified service personnel. The loudspeaker must not be opened.

• Do not use this product with an unearthed mains cable or an unearthed mains connection as this may compromise electrical safety.

• Donot exposethe loudspeakerto water or moisture. Do not place any objects filled with liquid, such as vases on the loudspeaker or near it.

• This loudspeaker is capable of producing sound pressure levels in excess of 85 dB, which may cause permanent hearing damage.

• Free flow of air behind the loudspeakeris necessary to maintain sufficient cooling. Do not obstruct airflow around the loudspeaker.

• Note that the amplifier is not completely disconnected from the AC mains service unless the mains power cord is removed from the amplifier or the mains outlet. Guarantee This product is guaranteed for a period of two years against faults in materials or workmanship. Refer to supplier for full sales and guarantee terms.6 English Figure 4. The curves show the effect of the “Bass Tilt”, “Treble Tilt” and “Bass Roll-Off” controls on the free field response of the 8020B Figure 5. The upper curve group shows the horizontal directiv- ity characteristics of the 8020B measured at 1 m. The lower curve shows the system's power response.English 7 AMplifieR SecTiOn Bass amplifier output power with an 8 Ohm load: 20 W Treble amplifier output power with an 8 Ohm load: 20 W Long term output power is limited by driver unit protection circuitry.

Signal to Noise ratio, referred to full output: Bass > 95 dB Treble > 95 dB

Mains voltage: 100, 120, 220 or 230 V according to region Voltage operating range: ±10 % Power consumption: Idle 5 VA Full output 50 VA SySTeM SpecificATiOnS Lower cut-off frequency, –3 dB: < 65 Hz

Upper cut-off frequency, –3 dB: > 21 kHz

Free field frequency response of system: 66 Hz – 20 kHz (± 2.5 dB)

Maximum short term sine wave acoustic output on axis in half space, averaged from 100 Hz to 3 kHz: @ 1 m > 96 dB SPL @ 0.5 m > 102 dB SPL

Maximum long term RMS acoustic output in same conditions with IEC weighted noise (limited by driver unit protection circuit): @ 1 m > 95 dB SPL

Maximum peak acoustic output per pair on top of console, @ 1 m distance with music material: > 105 dB

Self generated noise level in free field @ 1m on axis: < 10 dB (A-weighted)

Drivers: Bass 105 mm (4") cone Treble 19 mm (

") metal dome Both drivers are magnetically shielded

Weight: 3.7 kg (8.1 lb)

Dimensions: Height 242 mm (9

(including Iso-Pod™ table stand) Height 230 mm (9

cROSSOveR SecTiOn Input connector: Input: XLR female, balanced 10 kOhm, pin 1 gnd, pin 2 +, pin 3 -

Input level for 100 dB SPL output at 1 m: -6 dBu at volume control max

Crossover frequency, Bass/Treble: 3.0 kHz

Treble tilt control operating range: 0 to –2 dB @ 15 kHz

Bass roll-off control operating in a –6 dB step @ 85 Hz (to be used in conjunction with a 7050B subwoofer)

Bass tilt control operating range in –2 dB steps: 0 to –6 dB @ 100 Hz

The ‘CAL’ position is with all tone controls set to ‘off’ and the input sensitivity control to maximum (fully clockwise). ec DeclARATiOn Of cOnfORMiTy This is to certify that the Genelec Monitoring System 8020B conforms to the following standards: Safety: EN 60065: 2002 + A1:2006 / IEC 60065:2001 7th Edition + A1: 2005

Signal to Noise ratio, referred to full output: Bass > 95 dB Treble > 95 dB

Mains voltage: 100, 120, 220 or 230 V according to region Voltage operating range: ±10 % Power consumption: Idle 5 VA Full output 50 VA TecHniScHe DATen Lower cut-off frequency, –3 dB: < 65 Hz

Upper cut-off frequency, –3 dB: > 21 kHz

Free field frequency response of system: 66 Hz – 20 kHz (± 2.5 dB)

Maximum short term sine wave acoustic output on axis in half space, averaged from 100 Hz to 3 kHz: @ 1 m > 96 dB SPL @ 0.5 m > 102 dB SPL

Maximum long term RMS acoustic output in same conditions with IEC weighted noise (limited by driver unit protection circuit): @ 1 m > 95 dB SPL

Maximum peak acoustic output per pair on top of console, @ 1 m distance with music material: > 105 dB

Self generated noise level in free field @ 1m on axis: < 10 dB (A-weighted)

Drivers: Bass 105 mm (4") cone Treble 19 mm (

") metal dome Both drivers are magnetically shielded

Weight: 3.7 kg (8.1 lb)

Dimensions: Height 242 mm (9

(including Iso-Pod™ table stand) Height 230 mm (9

fReQUenZWeicHe UnD filTeR Input connector: Input: XLR female, balanced 10 kOhm, pin 1 gnd, pin 2 +, pin 3 -

Input level for 100 dB SPL output at 1 m: -6 dBu at volume control max

Crossover frequency, Bass/Treble: 3.0 kHz

Treble tilt control operating range: 0 to –2 dB @ 15 kHz

Bass roll-off control operating in a –6 dB step @ 85 Hz (to be used in conjunction with a 7050B subwoofer)

Bass tilt control operating range in –2 dB steps: 0 to –6 dB @ 100 Hz

The ‘CAL’ position is with all tone controls set to ‘off’ and the input sensitivity control to maximum (fully clockwise). eG KOnfORMiTÄTSeRKlÄRUnG This is to certify that the Genelec Monitoring System 8020B conforms to the following standards: Safety: EN 60065: 2002 + A1:2006 / IEC 60065:2001 7th Edition + A1: 2005

(Minimum Diffraction Enclosure

(Directivity Control Waveguide