GENELEC 7350A Smart Active Subwoofer Instruction Manual
- June 12, 2024
- GENELEC
Table of Contents
7350A Smart Active Subwoofer
Instruction Manual
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
proprietary Laminar Spiral Enclosure™ (LSE™) 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
operating manual. Inspect the subwoofer to ensure that it has not been damaged
in transport. Check that the mains voltage marking onthe 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
canbe powered up.
Audio Connections
Audio connections are made with balanced XLR cables. The 7350A has IN/OUT
connector 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 corresponding “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
subframes.
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
compensating 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.
ISS™ AutoStart Function
Intelligent Signal Sensing™ (ISS™) 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 clicking the “ISS Power Saving”
pulldown menu. This menu also provides selection of the time before entering
standby. Playback automatically resumes once an input signal is detected.
There is a slight delay before playback 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 frequency 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 frequency 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.
Figure 2. Flush mounting the subwoofer.
Note the clearance needed on the reflex port side.
The bass reflex port (located opposite of the connector panel) should have a
minimum clearance of 7.5 cm (3 in) to ensure sufficient bass reflex system
sound output.
Flush Mounting the Subwoofer
When the subwoofer is flush mounted into a recess in a wall or in a cabinet,
ensure amplifier cooling and unrestricted airflow from the bass reflex port.
Make the recess at least 7.5 cm (3 in) wider than the subwoofer. Place the
subwoofer to the right side of the recess with the driver facing the room.
This leaves sufficient space at the bass reflex port. The height and depth of
the recess should not be bigger than what is needed to fit the subwoofer.
Safety Considerations
Genelec 7350A subwoofer has been designed in accordance with international safety standards. However, to ensure safe operation and maintain the unit in safe operating condition, the following warnings and cautions must be observed:
- Servicing and adjustment must only be performed by qualified service personnel. The subwoofer cabinet or electronics unit must not be opened.
- Do not use this subwoofer with an unearthed mains cable or an unearthed mains connection as this may compromise electrical safety.
- Do not expose the subwoofer to water or moisture. Do not place any objects filled with liquid, such as vases, on the subwoofer or near it.
- This subwoofer is capable of producing sound pressure levels in excess of 85 dB SPL, which may cause permanent hearing damage.
- Free flow of air around the subwoofer is necessary to maintain sufficient cooling. Do not obstruct airflow around the subwoofer.
- 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.
Warning!
This subwoofer is capable of delivering sound pressure levels in excess of 85
dB, which may cause permanent hearing damage.
Maintenance
No user serviceable parts are inside the subwoofer. Any maintenance of the unit may only be performed by qualified service personnel.
Guarantee
This product is supplied with a two year guarantee against manufacturing faults or defects that might alter the performance of the unit. Refer to supplier for full sales and guarantee terms.
SYSTEM SPECIFICATIONS
| 7350A
Free field frequency response
± 3 dB
-6 dB| 25 – 150 Hz
22 – 160 Hz
Maximum short term sine wave SPL output averaged from 30 to 85 Hz, measured in
half space at 1 meter| > 104 dB
Self generated noise level in half space at 1 m on axis (A-weighted)| < 5 dB
Harmonic distortion at 90 dB SPL at 1 m on axis in half space 30… 85 Hz
2nd
3rd| < 4 %
< 1 %
Driver, magnetically shielded| 205 mm (8″)
Weight| 19 kg (42 lbs)
Dimensions
Height
Width
Depth
| 410 mm (161/8 in)
350 mm (133/4 in)
319 mm (129/16 in)
SIGNAL PROCESSING
| 7350A
Subsonic filter (18 dB/octave) below| 20 Hz
LFE cutoff frequency| 150 Hz
Midband rejection >400 Hz| ³ 50 dB
GLM software Auto Cal tools
Parametric notch filters
Delay adjustment
Level adjustment| 20
160 ms
60 dB
Compliance with FCC rules
This device complies with part 15 of the FCC Rules. Operation is subject to
the following two conditions:
This device may not cause harmful interference, and this device must accept
any interference received, including interference that may cause undesired
operation.
Note: This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and
can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not
occur in a particular installation. If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help
Modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipment under FCC rules.
AMPLIFIER SECTION
| 7350A
Amplifier short term output power (Long term output power is limited by driver
unit protection circuitry)| 150 W
Amplifier system THD at nominal output| < 0.005%
Mains voltage| 100, 120 or 230 V
Power consumption (average)
Standby (ISS active)
Idle
Full output| < 0.5 W
8.5 W
150 W
CONNECTIONS
ANALOG| 7350A
Input / Output connectors XLR female / male LFE Input connector XLR female| 5
/ 5
1
Pin sequence
pin 1
pin 2
pin 3| gnd
+ (non-inverting)
– (inverting)
Input impedance| 10 kohm balanced
Input level for 100 dB SPL output @ 1 m| -6 dBu
(variable in GLM software)
Output gain| 0 dB
The output connectors carry an unfiltered copy of the signal arriving into their respective Input connectors.
| DIGITAL | 7350A |
|---|---|
| Input / Output connectors XLR female / male | 1 / 1 |
| Signal format | AES/EBU single wire |
Digital audio
Word length Sample rate| 16 – 24 bits
32 – 192 kHz
GLM NETWORK| 7350A
---|---
Input / Output RJ45| 1-Jan
Genelec Document D0116R002 Copyright Genelec Oy 9.2014. All data subject to change without prior notice
International enquiries:
Genelec, Olvitie 5
FIN-74100, Iisalmi, Finland
Phone +358 17 83881
Fax +358 17 812 267
Email [email protected]| In the U.S.
please contact:
Genelec, Inc., 7 Tech Circle
Natick, MA 01760, USA
Phone +1 508 652 0900
Fax +1 508 652 0909
Email [email protected]
---|---
In China please contact:
Beijing Genelec Audio Co, Ltd
Room 101, 1st Floor Building 71 B33
Universal Business Park
No.10 Jiuxianqiao Road, Chaoyang District, Beijing 100015, China
Phone +86 (10) 5823 2014,
Post code 100015
Email [email protected]|
In Sweden please contact
Genelec Sverige
Ellipsvägen 10B
P.O. Box 5521, S-141 05 Huddinge
Phone +46 8 449 5220
Fax +46 8 708 7071
Email [email protected]