Genelec 7070A, 7071A 7060A, 7070A and 7071A Active Subwoofers, General description, Installation

7060A, 7070A and 7071A Active Subwoofers

General description

Genelec 7060A, 7070A and 7071A are pow- erful active subwoofers, incorporating all the amplifier and crossover electronics needed for bass management and reproduction in modern 6.1 or 5.1 channel surround sound or traditional stereo systems. Their 19 to 120 Hz (±3 dB) (29 to 120 Hz on the 7060A) fre- quency range, ample sound pressure capa- bility and versatile connections make these subwoofers ideal companions for Genelec's active monitoring speakers.

Bass management unit

The built-in bass management unit has six signal input and output channels (L/C/R Front and L/C/R Rear), a discrete LFE signal input and a summed signal output, providing great flexibility and easy connection in all monitor- ing environments.

The active crossover contained in the bass management unit splits the input signals into low and high frequency components at 85 Hz. Frequencies below 85 Hz are directed to the subwoofer and frequencies above 85 Hz to the main speakers.

The low pass section sensitivity can be adjusted from +12 dBu to -6 dBu to allow

easy subwoofer level matching with various main speakers. All outputs have 0 dB pass- band gain.

The low pass frequency of the LFE input channel can be set to 85 Hz, 120 Hz or 85 Hz with "Redirect" function that routes LFE con- tent above 85 Hz to the front center monitor. The input sensitivity of the LFE channel can be set to 0 dB or +10 dB.

Balanced XLR connectors are used for the system audio inputs and outputs.

Two "Bass Roll-Off" switches are included to provide a flat bass response in all acous- tical environments, enabling adjustments of the subwoofer response in three -2 dB steps. Two phase matching switches in the crosso- ver allow compensation for the delay which occurs if the subwoofer is placed away from the main speakers, or for other speaker sys- tems phase behaviour. Four settings are pro- vided between 0° and -270°. An 85 Hz test tone generator is included to help achieve accurate crossover phase alignment.

Installation

Each subwoofer is supplied with a mains cable and an operating manual. Once unpacked, place the subwoofer in a suitable location (for more details see the "Positioning" section).

Before connecting the audio signals, ensure that both the subwoofer and the main moni- tors are switched off. Check that the voltage selector switch is set according to your local mains voltage (subwoofers sold in Europe have a fixed 230V setting). Connections are easier to make if you roll the subwoofer on its side with the amplifier panel facing up. Use this position only for making the connections and roll the subwoofer back to its normal upright position before use. Audio connec- tions to the subwoofer are made via balanced XLR connectors. An unbalanced source can also be used with a special RCA to XLR cable; the correct connection for the cable is shown in Fig. 2. However, we recommend the use of balanced cables and connectors due to their better noise immunity. The connectors are arranged in three rows on the amplifier panel (see Fig. 1):

Top row

LFE IN / SUM IN: Use this connector for the LFE or .1 output channel of a 5.1- or 6.1-channel discrete surround sound source, or the SUM OUT signal from the "master" subwoofer in a daisy-chained multiple sub- woofer configuration. Note that the "sub- woofer out" channel of an analogue matrix surround decoder (Dolby Surround, Dolby