Genelec 7070a, 7071a 用户手册

General description

Genelec 7060A, 7070A and 7071A are pow-

erful active subwoofers, incorporating all the 

amplifi er 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 

fl exibility 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 fl at 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 fi xed 230V setting). Connections are 

easier to make if you roll the subwoofer on 

its side with the amplifi er 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 amplifi er 

panel (see Fig. 1): 

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 confi guration. Note that the "sub-

woofer out" channel of an analogue matrix 

surround decoder (Dolby Surround, Dolby 

7060A, 7070A and 7071A Active Subwoofers

Gen 7060A+7070A+7071A

22.5.2002, 11:04

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