Genelec 8320.LSE Users Manual

7350A

Operating Manual

Genelec 7350A Smart Active Subwoofer

General Description

The Genelec 7350A smart active subwoofer

is a very compact low frequency monitor,

intended to extend the bass reproduction

of Genelec 8320A active monitors in stereo

or multichannel applications and 8330A in

stereo applications. The 7350A can be used

in multichannel applications with the 8330A

when SPL capacity of the 7350A subwoofer

suits the application. 7350A can be used a

general purpose Smart Subwoofer solution

with any analog or digital audio monitor.

Driver

The 7350A contains one 205 mm (8”) low

frequency driver housed in a Genelec’s pro-

prietary Laminar Spiral EnclosureTM (LSETM)

bass reﬂex cabinet.

Amplifier

The D Class power ampliﬁer outputs 150 W

with very low THD and IM distortion. Driver

overload, amplifier thermal overload, and

driver short circuit protections are included

in the ampliﬁer electronics.

Installation

The subwoofer is supplied with a mains

cable, a GLM network cable, and this operat-

ing manual. Inspect the subwoofer to ensure

that it has not been damaged in transport.

Check that the mains voltage marking on

the device matches your local mains voltage.

Before connecting turn off the subwoofer

and the monitors. Once all connections have

been made, the subwoofer and monitors can

be powered up.

Audio Connections

Audio connections are made with balanced

XLR cables. The 7350A has IN/OUT connec-

tor pairs for ﬁve analogue channels and an

analogue LFE channel input. There is also

one IN/OUT connector pair for AES/EBU

digital audio signal.

Connect signal cables from your audio

source to the female XLR "IN" connectors.

Next, connect XLR cables from the corre-

sponding "OUT" male XLR connectors to the

input connector of each monitor.

Connect the "LFE IN" connector to the LFE

or .1 output of a multichannel sound source.

The digital audio input (DIGITAL IN)

accepts a male XLR connector carrying an

AES/EBU formatted signal. The digital audio

signal can be routed to the next monitor or

subwoofer (DIGITAL OUT). The AES/EBU

digital audio subframe A or B is selected

using the GLM software. The default setting

for the subframe selection A+B meaning that

the subwoofer reproduces audio in both sub-

frames.

GLM Network Connection

Using the GLM Adapter all monitors and

subwoofers in the system are connected to a

computer running the Genelec Loudspeaker

Manager (GLM) software (See Figure 3.) A

GLM network cable with RJ45 connectors is

supplied with each monitor and subwoofer

for this. Start control network cabling from

the GLM Adapter to the first monitor or

subwoofer. Continue daisy-chaining to all

monitors and subwoofers in the system.

No special sequence is necessary. You can

choose the easiest control network cabling

route.

Settings and Acoustic

Calibration

The 7350A subwoofer and Smart Active

Monitors are extremely ﬂexible in compensat-

ing the acoustic inﬂuences of the room where

the products have been installed and support

automated setup using the GLM User Kit and

software. The 7350A subwoofer is compatible

with GLM 2.0 and later.

The GLM software can be downloaded

from Genelec web site (www.genelec.com/

glm). The GLM 2.0 User Kit is needed for

the setup. The User Kit contains the GLM

Adapter and GLM measurement microphone.

The GLM Adapter is connected to the

computer USB port and the GLM network. If

the 7350A is the only smart device, the GLM

Adapter is only connected to the subwoofer.

The GLM measurement microphone is

placed at the listening location.

Execute the setup process in the GLM

software to align and set up the subwoofer

and any other smart devices as a system on

the GLM network. After calibration, keep the

computer connected to maintain the settings

or save the settings to the subwoofer using

the GLM 2.0 software.

ISSTM Autostart Function

Intelligent Signal SensingTM (ISSTM) enables

less than 0.5 W standby power consumption.

As a factory default, the ISS function is

disabled. The ISS function can be enabled

and conﬁgured in the GLM software by click-

ing the “ISS Power Saving” pulldown menu.

This menu also provides selection of the

time before entering standby. Playback auto-

matically resumes once an input signal is

detected. There is a slight delay before play-

back resumes.

Placement in the Room

Subwoofer placement affects the frequency

response and sound level dramatically. At

low frequencies the acoustical effects of the

room are strong. Even a slight change in the

subwoofer's location can make a marked

difference. The placement affects the fre-

queny response, phase difference between

the monitors and subwoofer, as well as the

subwoofer roll-off rate.

Place the subwoofer on the ﬂoor, slightly

offset from the room centre line, at the front

wall. Distance to the front wall should be

less than 0.6 m (24 in) measured from the

subwoofer's driver. Proximity to the wall

can increase acoustic output and maximum

sound level. Larger distance to the wall can

cause acoustical cancellation and reduce

subwoofer output.

Moving the subwoofer slightly to the left

or right can improve the ﬂatness of the fre-

quency response. Positioning the subwoofer

close to a corner can boost the bass level

more but may cause asymmetrical sound

imaging at low frequencies.

Use the GLM to automatically calibrate

the frequency response of the subwoofer for

maximal ﬂatness. If the monitors are Smart

Monitors, GLM also automatically aligns the

output level and crossover phase in relation

to the monitors.

Minimum Clearances to

Walls or Other Objects

Do not cover the driver of the subwoofer.

Allow at least 10 cm (4 in) of space in front of

the driver grille.

Thick carpets under the subwoofer can

block ventilation.

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