8030A |
Operating Manual |
|
|
|
Genelec 8030A |
|
Active Monitoring System |
|
|
|
|
8030A Active Monitoring System
General description
The bi-amplified GENELEC 8030A is a two way active monitoring loudspeaker designed to be small but still have high output, low coloration, and broad bandwidth.
The 8030A is ideal 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 aluminium and shaped to reduce edge diffraction. Combined with the advanced Directivity Control WaveguideTM (DCWTM), this design provides excellent frequency balance in difficult acoustic environments. If necessary, the bass response of the 8030A’s can be extended with a Genelec 7050A or 7060A subwoofer.
Positioning the loudspeaker
Each 8030A 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 acoustic axis (see Figure 1).
Connections
Before connecting up, ensure that the mains switch is off and the volume control fully counter-clockwise (see Figure 1). Do not connect the loudspeaker to an unearthed mains supply or using an unearthed mains cable.
Audio input is via a 10 kOhm balanced female XLR connector labelled “INPUT”. An unbalanced source may be used as long as pin 3 is grounded to pin 1 at the unbalanced source connector (see Figure 2).
The male XLR “OUTPUT” connector can be used for daisy-chaining up to six 8030A’s together or for connecting a Genelec 7050A stereo subwoofer. The volume control attenuates the signal on this output, so the first “master” loudspeaker on a daisy chain can be used to adjust the level on the whole
chain. The volume controls on the “slave” |
Always start adjustment by setting all |
loudspeakers should be set fully clockwise. |
switches to “OFF” position. Measure or listen |
Once the connections have been made, |
systematically through the different combina- |
the loudspeakers are ready to be switched |
tions of settings to find the best frequency |
on. |
balance. |
Setting the volume control
The input sensitivity of the loudspeakers can be matched to the output of the mixing console or other source by adjusting the volume control on the front panel (see Figure 1).
Setting the tone controls
The frequency response of Genelec 8030A can be adjusted to match the acoustic environment 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 MLSSA or WinMLS is recommended for analyzing the effects of the adjustments, however, careful listening with suitable test recordings can also lead to good results if a test system is not available. Table 1 shows some typical settings in various situations. Figure 4 shows the effect of the controls on the anechoic response.
Treble tilt
Treble tilt (switch 1) attenuates the treble response above 5 kHz by 2 dB, which can be used for smoothening down an excessively bright sounding system.
Bass tilt
Bass tilt offers three attenuation levels for the bass response below 1 kHz, usually necessary when the loudspeakers are placed near 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 filtering at 85 Hz to complement the low-pass filter on a Genelec 7050A subwoofer. This switch should always be set to “ON” when using the 8030A with 7050A subwoofers.
The factory setting for all tone controls is “OFF” to give a flat anechoic response.
Mounting considerations
Align the loudspeakers correctly
Always place the loudspeakers so that their acoustic axes (see figure 1) are aimed towards the listening position. Vertical placement is preferable, as it minimises acoustical cancellation problems around the crossover frequency.
Maintain symmetry
Check that the loudspeakers are placed symmetrically and at an equal distance from the listening position. If possible, place the system so that the listening position is on the centerline of the room and the loudspeakers are placed at an equal distance from the centerline.
Minimise reflections
Acoustic reflections from objects close to the loudspeakers like desks, cabinets, computer monitors etc. can cause unwanted colouration blurring of the sound image. These can be minimised by placing the loudspeaker clear of reflective surfaces. For instance, putting the loudspeakers on stands behind and above the mixing console usually gives a better result than placing them on the meter bridge.
Minimum clearances
Sufficient cooling for 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 structure. The surroundings of the loudspeaker must always be open to the listening room with a minimum clearance of 5 centimeters (2") behind, above and on both sides of the loudspeaker. The space adjacent to the amplifier must either be ventilated or sufficiently large to dissipate heat so that the ambient temperature does not rise above 35 degrees Celsius (95°F)
Loading...