8331A
Smart Active Monitor
Operating Manual
操作手册
2
Introduction
Thank you for choosing a Genelec product! Fulfilling dreams by
offering people the most truthful sound reproduction possible
has been the source of our enthusiasm since 1978. There´s
already over one million Genelec monitors around the world -
welcome to our story!
All Genelec monitors are designed, hand assembled and
tested at our factory in Iisalmi, Finland. Our monitors are designed
to last for decades and we take care that our customers receive
excellent support and technical services throughout the life-time
of the products.
Please register your monitor at http://www.community.
genelec.com/. You will receive an extended 5 year warranty
for spare parts. For more information about our service and
technical support see
http://www.genelec.com/customer-service.
System Characteristics
Each 8331A is supplied with one mains power cable, one
5-meter GLM network cable and this operating manual.
The Genelec 8331A is suitable for professional monitoring
applications calling for very high precision and reliability.
It combines many remarkable Genelec technologies to
provide point source benefits with directivity control over an
extraordinarily wide audio bandwidth.
Genelec Loudspeaker Manager™ (GLM™)
Software And GLM User Kit
The GLM software gets the most out of 8341 and tailor-fits it to
your room. GLM is available for download free of charge at www.
genelec.com/glm. Check in from time to time to take advantage
of new features, or consider using the cloud-based version. A
GLM User Kit comprising the necessary hardware, including the
GLM Adapter and measuring microphone is needed for building
and operating the GLM network. This kit can be purchased at all
certified Genelec dealers.
Minimum Diffraction Coaxial (MDC™)
The minimum diffraction coaxial driver is comprised of a powerful
midrange driver combined with a tweeter driver extending to
ultrasonic frequencies. This unique arrangement eliminates or
minimizes acoustic diffraction sources that typically exist in
coaxial drivers and produces a flat frequency response both on
the acoustical axis and at all off-axis directions.
The 8331 may be oriented either horizontally or vertically and
is intended for near-field listening where the influences of the
room can be mostly minimized. Typical distances can vary from
1 meter or less to 3 meters depending on room size and SPL
requirements.
Directivity Control Waveguide (DCW™)
The 8331A has an unusually large directivity control waveguide
extending over the whole front face of the enclosure. The
midrange driver cone also forms a part of the directivity control
waveguide for the tweeter. From behind the waveguide, two
woofers radiate audio through two openings in the enclosure
front. This unique design enables directivity control of all audio
frequencies down to low bass.
Acoustically Concealed Woofers (ACW™)
A pair of nearly invisible woofers in the 8331A are placed
acoustically coaxially with the midrange/tweeter drivers to
create a three-way system with all drivers having their acoustical
axes in the same position. This creates an ideally working point
source radiator.
Smart Active Monitor (SAM™)
Genelec SAM technology can improve the reliability and accuracy
of monitoring. Smart Active Monitors have several parametric
notch and shelving filters that can be tuned automatically using
the Genelec Loudspeaker Manager (GLM) software to exactly
compensate for colorations generated by room acoustics. This
enables SAM monitors to sound neutral and achieve accurate
stereo imaging in all acoustical environments.
Audio Inputs
The 8331A’s audio inputs are designed to integrate easily into
all professional environments, supporting balanced line analog
and AES/EBU format digital signal. The maximum analog input
level is +25 dBu (13.7 Vrms or 19.5 V peak). Set to the maximum
sensitivity, an analog input signal of -6 dBu produces 100 dB
SPL sound level at 1 meter in free space. A -30 dBFS digital
audio input level produces 100 dB SPL level at 1 meter in free
space. Note that 0 dBFS refers to the largest possible digital
input value.
The XLR audio input accepts both AES/EBU format digital
signal and analog line level analog audio signal. With an
extremely low level AES/EBU signal, the automatic selection
may not work properly. In such case, the signal selection can be
made in the GLM software or, if GLM is not available, by setting
the “Stored” DIP switch to “OFF” and selecting the appropriate
AES/EBU channel with the “Digital” switches .
When using a digital audio source with adjustable level, it
may instead be advantageous to lower the output level of the
8331A using the monitors on-board rear panel controls. This
enables the use of a higher source output level with more digital
resolution, while taking full advantage of 8331’s impressively
low self generated noise.
The AES/EBU format supports two channels of audio in a
single cable. The DIGITAL OUT male XLR connector carries an
unaltered copy of the digital input signal. This enables daisy-
chaining of up to four monitors. The proper digital channel can
be selected using DIP switches or GLM.
Power Management
The 8331A mains power input supports any mains voltage
globally (100-240 VAC, 50-60 Hz). It can be plugged in anywhere
in the world and will always deliver the maximum output power
to the drivers even when the mains voltage fluctuates. If mains
power is provided with a generator, inverter or lower-quality UPS
device, we recommend filtering out harmonics from the mains
power voltage.
The energy saving function Intelligent Signal Sensing (ISS™)
puts the monitor automatically into a deep sleep state when no
input signal is present. The device then consumes less than
one watt of power. Upon sensing an input signal, the monitor
automatically awakens. The wait time until entering the power
saving state can be configured using the GLM software. When
ISS is active, you can leave your monitors on at all times and
3
Figure 2. Connectors and controls on the back panel of a 8331A.
Figure 1. GLM control network cabling
Figure 3. Connector panel detail.
have the monitoring system immediately ready for action. The
default wait time when ISS is enabled using the ISS DIP switch
is 60 minutes.
Setup Using The
GLM™ Control Network
Although the 8331A can be used without the GLM software and
control network, it can only reach its full potential when set up
and calibrated using GLM software, running on a Mac or PC.
Genelec therefore recommends setting up the 8331A
and other SAM monitors using GLM. You can find a detailed
description of the setup and the use in the GLM System
Operating Manual.
The GLM software and the proprietary Genelec monitor
control network offer automated acoustic equalization and
alignment for any reproduction system from mono over stereo
to complex 3D immersive audio setups, including also one or
more subwoofers. GLM includes AutoCal, an expert algorithm
built on data from thousands of professional listening rooms.
Setup with the GLM User Kit consists of the following steps:
1. Connect a CAT5 (RJ45) cable between each monitor (and
subwoofer) and finally to the control network input of the
GLM Adapter device (see Figure 1).
2. Connect the GLM Adapter to computer USB connector.
3. Using a microphone stand, place the Genelec measurement
microphone at the listening location with the microphone
pointing upwards and the microphone top at the height of
MICROPHONE
PLACED IN
THE LISTENING
POSITION
292-0063
GLM
TERMINATOR
COMPUTER
RUNNING
GLMSOFTWARE
USB CABLE
GLM ADAPTER
GLM NETWORK
CABLE
MONITORS
SUBWOOFER
RESET TO FACTORY
SETTINGS: PUSH
BUTTON FOR10 SEC
INPUT dBu
PRODUCING
100dB SPL (1 m)
-2
+4
+2
-4
-6
+6
dBu
0
ON
OFF
BASS ROLL-OFF
LEDDISABLE
BASS TILT
A
-20dB
B
-2
-4
-2
-4
STORED
(dB)
-10dB
LEVEL
DIGITAL
TREBLE TILT
+2
-4
DESKTOP160 Hz -4
(dB)
ISS
MADE IN FINLAND
www.genelec.com
SERIAL NUMBER
This device complies with FCCPart 15 andCanadian
ICES-003 radio frequency ClassBemission requirements.
Refer to operating manual for fullinformation.
292-8331T-6
ANALOG IN
DIGITAL THRU
AES/EBU
MAINSINPUT
50/60Hz60W
100-240 V~
8331A
COAXIAL TRI-AMPLIFIED
SMARTACTIVE MONITOR
GLM
NETWORK
DIGITALIN
AES/EBU
DIP SWITCHES FOR
STAND-ALONE USE
ROTARY LEVEL
CONTROL
MAINS
INPUT
GLM NETWORK
CONNECTORS
POWER
SWITCH
AUDIO SIGNAL
CONNECT
ORS:
-DIGITAL /
ANALOG IN
-DIGITAL THRU
4
Figure 4. The location of the acoustic axis.
Figure 5. Symmetrical layout and keeping the acoustic axis clear
from obstructions minimizes reflection surfaces and maintains
accurate localisation because reflections are symmetrical.
Monitor
Mounting Position
Treble
Tilt
Bass
Tilt
Bass
Roll-Off
Desktop
Flat anechoic
response
None None None None
Free standing in
a damped room
None -2 dB None None
Free standing in
a reverberant room
None -4 dB None None
Near field on
a reflective surface
None -2 dB None -4 dB
In a corner None -4 dB -4 dB None
Table 1. Suggested Tone Control settings for some typical monitor
placement positions.
the engineer’s ear. The microphone is a part of the GLM
User Kit.
4. Connect the microphone cable to the microphone input in
the GLM Adapter device.
5. Download the GLM software at the Genelec web site (www.
genelec.com). Install the GLM software and follow the
instructions in the software to measure and set up your
monitors.
6. If you plan to not use a computer for controlling the
monitors, use the GLM software to write the settings into
the monitors (use menu item “Store | Store the Current
Group Settings…”).
The GLM network may also be used for monitor control -
switching between sets of loudspeakers, solo, mute, invoking
calibrated levels etc. - or settings can be permanently stored in
all monitors for a static and predictable setup. If so, a computer
is only needed for the setup.
If the network is disconnected, settings stored using the GLM
software can be enabled by setting the DIP switch “Stored” to ON.
The CONTROL NETWORK RJ-45 connectors are used for
the GLM network. These connectors are not Ethernet LAN
compatible. Do not connect to an Ethernet LAN.
Setup Without Using The GLM
When GLM is not available, you can still adjust the 8331A for
placement in a room by using the DIP switches on the back of the
monitor. Settings are more limited but nevertheless provide the
fundamental equalizers to compensate for the acoustical effects
of the listening room, input selections and input sensitivity. To use
this method, ensure that the GLM management network is not
connected and set the DIP switch “Stored” to its OFF position.
Stand-Alone Control Functions
Bass Roll-Off Control
The Bass Roll-Off control attenuates the monitor’s output near
the cut-off frequency. Attenuation levels of -2 dB, -4 dB or -6 dB
(both switches ON) can be selected by combining settings on
one or more switches. This setting may be needed to control the
bass level in spaces with strong low frequency reverberance.
Desktop Reflection Compensation
The desktop low frequency control attenuates the bass
frequencies around 160 Hz by 4 dB. This feature is designed to
compensate for the boost occurring often when the monitor is
placed upon a meter bridge, table or similar reflective surface.
Bass Tilt Control
The Bass Tilt control switches offer three attenuation levels for
the bass response below 800 Hz. The attenuation levels are -2
dB, -4 dB and -6 dB (both switches ON). This control is usually
necessary when the monitors are placed near room boundaries
such as at the wall or close to a room corner.
Treble Tilt Control
The Treble Tilt control allows adjusting the high frequency
response above 5 kHz by +2 dB, -2 dB or -4 dB, which can
be used for correcting an excessively bright or dull sounding
system or to compensate for the high frequency level loss when
the monitor is placed behind a screen.
LED Disable
This switch shuts off the front panel LED light.
ACOUSTIC
AXIS
h1
ACOUSTIC
AXIS
h2
h1 = 163 mm (6 3/8 in)
h2 = 116 mm (4 9/16 in)
5
Table 2. Monitor front panel light indications summary
Colour Indication
Solid greed Normal state, normal operation
Blinking green GLM is adjusting the monitor
Green blink every 10 sec. Monitor is in an ISS power saving sleep
state
Red blink Power amplier overload protection is
active (audio is modied because of
protection)
Solid red Monitor is muted
Yellow Monitor is not in the active (playing)
group
Yellow blinking Overheat protection is active (audio is
modied because of protection)
ISS
This switch activates or deactivates the ISS automatic power
saving function. The default time for ISS activation is 60 minutes,
but the time can be adjusted in the GLM software.
Digital
The Digital switch selects the digital audio channels on the
AES/EBU. Turning both switches on reproduces the sum of the
A and B channels. When both channels are selected 6 dB of
attenuation is applied to avoid overloading the monitor.
Level
The Level switches reduce the monitor output in 10 dB steps
(-10 dB, -20 dB and with both switches set to ON, -30 dB).
The effects of these switches combine with the effect of the
rotary level adjustment control. The total setting range is 42
dB.
Stored
The Stored switch selects between the application of the
above listed controls on the monitor’s back panel and applying
the settings stored inside the monitor memory using the GLM
calibration software. Setting the Stored switch to the OFF
position selects the settings defined by the monitor’s controls.
Setting the Stored switch to ON position selects the use of
internally stored GLM settings. When the Stored switch is set
to the ON position the adjustments on the monitor have no
effect.
Operating Environment
This product is designed for indoor use only. The permissible
ambient temperature is 15-35 degrees Celsius (50-95°F) and
relative humidity 20% to 80% (non-condensing). To prevent
condensation of humidity, after the product has been stored
or transported in a cool environment and is then taken into a
warm room, wait 0.5-1 hours before opening the packaging and
connecting to the mains power.
Sufficient cooling around the 8331A must be ensured. The
minimum clearance behind, above and on both sides of the
monitor is 50 mm (2 in). If the product is installed in a recess,
the space must be ventilated sufficiently to dissipate the heat.
Mounting And Placing Monitors
Mounting Options
The vibration insulating Isolation Positioner/Decoupler™ (Iso-
Pod™) table stand allows tilting of the monitor. The stand spring
can be attached to three mounting points on the 8331A enclosure,
allowing the Iso-Pod to be used in vertical or horizontal positions.
Aim the monitor so that its acoustic axis points towards the
listening position (see Figure 4). Place the monitors symmetrically
at equal distances from the listening position. If possible, place
the listening position on the left-right centerline of the room
(see Figure 5). When a monitor is placed far away (1.0-2.2 m,
3-7 ft) from the acoustically hard wall behind the monitor, an
acoustic reflection from the wall may cause cancellation of low
frequencies and reduce the bass output.
Minimize reflections by placing the monitors away from
acoustically reflective surfaces. Acoustic reflections from
objects like desks, cabinets and computer monitors can cause
unwanted coloration and blurring of the sound image. Putting
the monitors on stands behind and above a mixing console
usually improves the response over placing monitors on a meter
bridge. Symmetrical positioning of the sound reflecting objects
maintains a balanced soundstage (see Figure 5).
A wide variety of ceiling and wall mounts are available through
your Genelec dealer. Genelec 8331A can be fitted with König &
Meyer monitor mounts using two M6 x 10 mm threaded holes on
the enclosure back. There is also a 3/8 in UNC threaded hole in the
base of the monitor. Consult the Genelec Accessories Catalogue at
www.genelec.com or your local distributor/dealer for information.
Front Panel Light
Normally, the light on the front panel is green, indicating normal
operational mode. Red and yellow colours are used to indicate
special situations. See Table 2.
Use With Subwoofers
In situations requiring deeper fundamental response or
multichannel bass management, Genelec recommends
using the 7300 series subwoofers. For more detailed system
configuration and matching products, please consult the on-line
Genelec Product Selection Tool at www.genelec.com.
Maintenance
There are no user serviceable parts inside the monitor.
Maintenance or repair must only be done by Genelec certified
service personnel. The monitor enclosure must not be opened.
Opening the monitor may lead to loss of the individual monitor
factory calibration and damage to components.
Safety Considerations
Although the 8331A has been designed in accordance with
international safety standards, to ensure safe operation and
to maintain the monitor under safe operating conditions, the
following warnings and precautions must be observed:
• Servicing and adjustment must only be performed by
certified Genelec service personnel. The monitor enclosure
must not be opened.
• Do not use this product with an unearthed mains cable
6
Figure 8. The curves above show the horizontal directivity
characteristics of the 8331A.
Figure 9. The curves above show the vertical directivity
characteristics of the 8331A.
Figure 6. The curves above show the effect of the “Bass Tilt”,
“Treble Tilt”, “Desktop Low Frequency” and “Bass Roll-Off” controls
on the free field response of the 8331A.
Figure 7. Frequency responses at 0, 15, 30, 45 and 60 degree
angles and power response in full space. Input level -20 dBu.
or a mains connection without the protective earth contact
as this may lead to personal injury.
• To prevent fire or electric shock, do not expose the unit
to water or moisture.
• Do not place any objects filled with liquid, such as vases
on the monitor or near it.
• Note that the amplifier is not completely disconnected
from the AC mains service unless the mains power cord is
removed from the monitor loudspeaker or the mains outlet.
• Free flow of air behind and around the monitor is
necessary to maintain sufficient cooling. Do not obstruct
airflow around the monitor.
WARNING!
The 8331A is capable of producing sound pressure levels in
excess of 85 dB, which may cause hearing damage. Sound
exposure level integrated over an 8 hour working day should
be limited to 80 dB(A) to reduce the risk of permanent hearing
damage. For each 3 dB increase in sound exposure, half the
exposure time should be observed (equal energy).
Guarantee
The Genelec 8331A is guaranteed for two years against
manufacturing faults or defects altering performance. Refer to
the reseller for full sales and guarantee terms.
Compliance To FCC Rules
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.
20
20k
50
100
200
500
1k 2k
5k
10k
Frequency Hz
Genelec Oy 8331 11 Mar17
0°
60°
15°
30°
45°
65
70
75
80
85
90
95
dB SPL
85
90
95
dB SWL
80
20
20k
50
100
200
500
1k 2k
5k
10k
Frequency Hz
Genelec Oy 8331A 12 May 2017
80
85
90
BASS ROLL-OFF
TREBLE TILT
80
85
90
80
85
90
DESKTOP LF
BASS TILT
dB SPL
7
Figure 10. The curve above shows the delay variation of the 8331A
as a function of frequency.
SYSTEM SPECIFICATIONS
Lower cut-off frequency, –6 dB < 45 Hz
Upper cut-off frequency, –6 dB > 37 kHz
Accuracy of frequency response, ± 1.5 dB 58 Hz – 20 kHz
Maximum short term sine wave acoustic output on axis in half space, averaged from
100 Hz to 3 kHz at 1 m
≥ 104 dB SPL
Maximum long term RMS acoustic output in the same conditions with IEC weighted
noise (limited by driver protection circuit) at 1 m
99 dB SPL
Maximum peak acoustic output per pair in a listening room with music material at 1 m 110 dB
Self generated noise level in free space at 1 m on axis (A-weighted) ≤ 0 dB
Harmonic distortion at 85 dB SPL at 1 m on axis
Freq: 50…100 Hz
> 100 Hz
< 2 %
< 0.5 %
Drivers
Bass
Midrange
Treble
Dual 130 x 65 mm (5
1
/
8
x 2
5
/
8
in) oval cones
90 mm (3
1
/
2
in) cone (coaxial)
19 mm (
3
/
4
in) metal dome (coaxial)
Weight 6.7 kg (15 lb)
Dimensions
Height including IsoPod stand
Height without IsoPod
Width
Depth
305 mm (12 in)
285 mm (11
1
/
4
in)
189 mm (7
1
/
2
in)
212 mm (8
3
/
8
in)
Bass amplifier short term output power
Midrange amplifier short term output power
Treble amplifier short term output power
(Long term output power is limited by driver protection circuitry)
72 W
36 W
36 W
Amplifier system THD at nominal output <0.05%
Mains voltage 100-240 VAC 50/60 Hz
Power consumption
ISS active
Idle
Full output (short term)
< 0.5 W
4 W
60 W
AMPLIFIER SECTION
20k
50
100
200
500
1k 2k
5k
10k
Frequency Hz
Genelec Oy 8331 16 May 2017
ms
5
0
10
15
35
20
25
30
40
8
* The notch and shelving lters adjustments, AutoCal
TM
and GLM
TM
manual system calibration features are part of the Genelec Loudspeaker Manager (GLM
TM
) software
8331A
Analog signal input connector XLR female, balanced 10 kOhm
Maximum analog input signal
Analog input sensitivity (100 dB SPL at 1 m)
Analog input sensitivity control
pin 1 gnd
pin 2 non-inverting
pin 3 inverting
+24.0 dBu
-6 dBu
Adjustable from +36 to -6 dBu
Digital signal input connector XLR female 110 Ohm
Digital signal output / Thru connector XLR male 110 Ohm
Digital audio input
Word length
Sample rate
Digital input sensitivity (100 dB SPL at 1 m)
Digital input maximum attenuation
AES/EBU Single Wire
AES/EBU Single Wire
16 - 24 bits
32 - 192 kHz
-30 dBFS
42 dB
Control network
Type
Connection
Proprietary GLM™ network
2 RJ45, CAT5 cables
Crossover frequencies
Bass/Mid
Mid/Treble
500 Hz
3 kHz
GLM
TM
software frequency response adjustment*
Parametric notch filters
Shelving filters
16
2 LF and 2 HF
System room response calibration Genelec GLM AutoCal™, GLM
TM
manual, Stand-alone*
SIGNAL PROCESSING
9
介 绍
感谢您选择真力产品！为人们提供最精准的声音再现，是真力自
1978年成立以来的不懈追求。如今，世界上已经有超过一百万只真
力监听音箱⸺欢迎加入我们！
每一只真力监听音箱，都在位于芬兰伊萨尔米的工厂设计、手工
制造与严格检测。我们的监听音箱设计使用寿命长达数十年，在
整个产品周期中，我们不遗余力地为客户提供产品与技术的维护
和支持。
请扫描音箱包装上的二维码，注册您的音箱。注册之后，您将获得
长达5年的硬件质量保修。
更多信息请参考: https://www.genelec.cn/?page_id=17021
系统特征
每只8331A配备1条电源线，1条5米GLM网线以及这本说明书。
真力8331A适用高精度、高可靠性要求的专业监听场合。它集成了
真力多项核心技术，以开创性的同轴设计配合大面积指向性控制
波导，得到了点声源重放的精准声像定位，扩大了最佳聆听区域。
GLM™（真力音箱管理）软件和
GLM测试套件
使用GLM音箱管理软件可以发挥8331A的最大性能，使音箱与
房间环境精确耦合。您可以在https://www.genelec.cn/?post_
type=products&page_id=24634
免费下载GLM软件。您可以定期访问以获得最新版本，并使用最新
功能，或考虑使用基于云端的GLM版本。GLM测试套件包含GLM
适配器和校准话筒，以便搭建、测试及控制GLM系统。GLM套件可
在真力授权经销商处购买。
MDC™最小衍射同轴单元
MDC™最小衍射同轴单元集成了高声压级中频单元和延伸至超
声波频段的高频单元。这一独特设计解决了传统同轴单元设计难
以避免的声波衍射问题，在声轴上和离轴方向都能得到平直的频
率响应。
8331A既可以垂直摆放也可以横置摆放，适合于近场监听使用，让
房间声学的影响降到最低。典型的聆听距离在1米至3米之间，取决
于房间尺寸以及声压级要求。
DCW™声波指向性控制波导
8331A具有超越常规尺寸的大型指向性控制波导，延伸至整个前
面板。中频单元的盆体同时构成了高频指向性波导的一部分。在波
导的上下两端内，藏有两个低频单元，通过面板上下的开口辐射低
频。这一独特设计，可以使指向性受控的频段扩展至低频。
ACW™声学隐蔽式低频单元
一对低频单元隐藏于8331A的前面板后，与中频单元、高频单元构
成声学中心重合的三分频同轴结构。实现了理想的点声源辐射。
SAM™智能有源监听技术
真力SAM智能有源监听技术可以提升监听的可靠性和精确性。智
能有源监听音箱具备多组参量均衡设置，可以利用GLM真力音箱
管理软件进行自动校准设定，精确补偿房间声学带来的染色。得益
于此，真力SAM音箱可在各种声学环境中获得自然的响应和精确
的声像定位。
音频输入
8331A支持平衡线路模拟输入和AES/EBU格式数字输入，可以
方便接入到各种专业音频制作环境中。最大的模拟输入电平为
+25dBu（13.7Vrms或19.5V峰值）。在灵敏度设置为最高的情况
下，当模拟输入信号为-6dBu时，可在自由场中距离音箱1米处得
到100dB SPL的声压级。当数字输入信号电平为-30 dBFS时 ，可
在自由场中距离音箱1米处得到100dB SPL的声压级。请注意，0
dBFS代表最大的数字输入电平。
该XLR音频输入接口可以支持AES/EBU格式数字输入和线路模拟
输 入 。当 AES/EBU数字输入电平极低时，输入源可能无法自动切
换。此时，可以通过GLM软件切换输入源。
在使用电平可调的数字音源时，更优的方式为使用音箱背板的音
量旋钮进行衰减，而非降低音源的音量。这样音源可以利用更高的
电平输出以获得更高数字精度，同时完整利用8331A惊人的低底
噪，获得更高的动态范围。
AES/EBU输入使用一条信号线传送两声道信号。数字输入信号将
被直接复制至音箱背面的DIGITAL OUT（数字输出）卡侬公接口输
出。利用此功能，可使用菊花链的方式最多将4只音箱串接使用，使
用DIP开关或GLM软件设定每只音箱的信号通道。
电源管理
8331A电源输入支持全球通用电压（100-240VAC，50-60 Hz）。
它可以在世界上任意国家或地区使用，在不同电压环境中都可以
获得最大输出。如使用发电机、逆变器或低品质UPS等设备供电，
我们建议使用额外设备来滤除电源杂波。
ISS™智能休眠功能可在无信号输入时让音箱自动进入休眠模
式，此时设备能耗将降低至1瓦以下。在检测到输入信号后，音箱
将自动回到工作状态。进入休眠的等待时间可通过GLM软件设
置 。当 ISS功能启用后，您不再需要手动开启音箱，随时可以让音
箱进入工作状态。使用DIP开关开启ISS功能后，默认的等待时间
为60分钟。
使用GLM进行音箱设置
尽管8331A可以脱离GLM软件进行使用，但仅有在使用PC或Mac
电脑运行的GLM软件进行设置的情况下，才能发挥出最佳性能。
10
因此，真力建议使用GLM软件设置8331A和其他SAM音箱。您可
以 在《 GLM系统使用手册》中获得关于GLM使用的详细描述。
GLM软件和真力音箱控制网络提供了自动化的系统设置与房间
均衡校正，适用于从单声道到3D沉浸式音频的制作系统，以及使
用一只或多只低音音箱的情况。GLM的核心是AutoCal自动校正
算法，该算法基于数千个专业听音室的真实数据研发而成。
GLM测试套件的使用包括以下步骤：
1，使 用 5类网线（RJ45接头）将每只音箱（包括低音音箱）串接起
图2 8331A背板的接口与控制按钮
图1 GLM控制网络连接示意图
图3 接口面板详图
RESET TO FACTORY
SETTINGS: PUSH
BUTTONFOR 10 SEC
INPUTdBu
PRODUCING
100dB SPL (1 m)
-2
+4
+2
-4
-6
+6
dBu
0
ON
OFF
BASS ROLL-OFF
LEDDISABLE
BASS TILT
A
-20dB
B
-2
-4
-2
-4
STORED
(dB)
-10dB
LEVEL
DIGITAL
TREBLE TILT
+2
-4
DESKTOP 160Hz-4
(dB)
ISS
MADE IN FINLAND
www.genelec.com
SERIAL NUMBER
This device complies withFCCPart15and Canadian
ICES-003 radiofrequencyClass Bemission requirements.
Referto operating manual for full information.
292-8331T-6
ANALOG IN
DIGITALTHRU
AES/EBU
MAINS INPUT
50/60Hz60W
100-240V~
8331A
COAXIAL TRI-AMPLIFIED
SMARTACTIVEMONITOR
GLM
NETWORK
DIGITAL IN
AES/EBU
来，最终连接到GLM适配器的网络输入接口（见图1）；
2，将 GLM适配器通过USB线连接到电脑；
3，使用话筒支架，将真力校准话筒置于听音位置。校准话筒朝上，
话筒顶部与听音者耳朵齐平。GLM测试套件中已包含校准话筒。
4，将话筒连接到GLM适配器的话筒输入接口；
5，从真力官方网站（https://www.genelec.cn/?post_
type=products&page_id=24634）下载最新的GLM软件，安装软
件并根据提示进行音箱设置和校准；
6，如果您不需要随时在电脑上运行GLM软件控制音箱，可以将
GLM软件设置存储到音箱中（利用菜单选项中的“Group（编组）|
Store Group Settings（保存当前编组设置）�”）
GLM网络还可以用于监听控制⸺多组音箱之间切换，独听
11
（Solo），静 音（ Mute），调用响度校准预设等。如果音箱的摆放位
置和使用功能固定不变时，可以将设置永久存储到音箱中。在这
种情况下，仅在测试时需要使用电脑。
如果GLM网络断开，将DIP开 关“ Store”调 至 ON状态可以启用保
存在音箱内的设置。GLM控制网络接口（RJ45网线接口）不适配
有线局域网（Ethernet LAN）。请勿将其连接至路由器、交换机等
局域网设备。
脱离GLM进行音箱设置
当脱离GLM时，您仍可以使用音箱背面的DIP开关来调整8331A
的设置。此时设置功能相对有限，仅能有限地提供输入选择、灵敏
度调整，以及基础的房间声学补偿设置。如需使用此模式，请确保
GLM网络断开，同时将“Stored” DIP开关调至OFF状态。
单机控制功能
低频滚降（Bass Roll-Off）控 制
低频滚降（Bass Roll-Off control）可以衰减低频截止点附近的
低频。使用一个或多个低频滚降DIP开关，可以获得-2dB、-4dB以
及-6dB（两个开关均设为ON）的衰减。在低频混响较强的环境中，
可能需要启用此设置。
桌面反射补偿（Desktop）
桌面反射补偿将在160Hz左右的低频频率衰减4dB。当音箱放置在
调音台表桥、桌面或类似反射面上时，使用该设置可以补偿这种摆
位带来的低频隆起。
低频搁架（Bass Tilt）控 制
低频搁架（Bass Tilt）为 800Hz以下的低频响应提供三种衰减设
置：-2dB、-4dB以及-6dB（两个开关均设为ON）。通常当音箱靠
近房间边界时，如靠近墙或靠近角落，需要启用此设置。
高频搁架（Treble Tilt）控 制
图4 声轴的位置
图5 正确的音箱布局：在房间中对称放置，声轴避开障碍物，以得到最佳的
声像定位。
音箱安装摆位 高频搁架
控制
低频搁架
控制
低频滚降
控制
桌面反射
补偿
消声室放置 关闭 关闭 关闭 关闭
在吸声室自由放置 关闭 -2 dB 关闭 关闭
在混响室自由放置 关闭 -4 dB 关闭 关闭
放在反射面上，用于近
场监听
关闭 -2 dB 关闭 -4 dB
靠角落放置 关闭 -4 dB -4 dB 关闭
表1 在不同声学环境下的建议音色调节设置
h1 = 163 mm (6 3/8 in)
h2 = 116 mm (4 9/16 in)
高频搁架（Treble Tilt control）为 5kHz以上的高频提供+2dB、-2dB
和-4dB三种设置。当音响系统的高频过分明亮或暗淡时，或者音箱
置于透声幕后导致高频衰减时，需要启用此设置进行补偿。
关闭LED
此拨挡开关可以关闭前面板的LED指示灯。
ISS智能休眠
此拨挡开关用于开启或关闭ISS自动休眠功能。默认休眠等待时
间为60分钟，该时间可在GLM软件中设置。
数字
数字拨挡开关可以设定音箱重放的AES/EBU通道。将两个开关都
调至ON时，将混合A和B通道信号进行重放，此时音箱会衰减6dB
以防信号过载。
电平
电平拨挡开关可以以10dB步进衰减音箱的输出（-10dB、-20dB
或两个拨挡开关都打开为-30dB）。此设定与灵敏度旋钮可同时
叠加使用，最大调整幅度为42dB。
12
表2 音箱前面板LED指示灯定义
颜色 状态
绿色长亮 正常工作状态
绿色闪烁 GLM正在调整该音箱
绿色每10秒闪烁一次 音箱处于休眠状态
红色闪烁 功放过载保护启动
（音频信号因此受到改变）
红色长亮 音箱哑音
黄色 音箱未在当前编组
黄色闪烁 过热保护启动
（音频信号因此受到改变）
存储
存储的拨挡开关（Stored）可以切换上文提到的拨挡开关设置与
GLM校准后存储在音箱内部的设置。当拨挡开关为OFF时 ，音 箱
状态将以音箱背板的手动设置为准；当调整为ON时，将调取音
箱内部存储的GLM设置，此状态下音箱背板的手动设置功能将
失效。
使用环境
此产品仅限室内使用。允许的环境温度为15-35摄氏度 （50-95华
氏度），相对湿度为20%至80%（未凝结）。为了防止冷凝，当此产
品从温度较低的储存或运输环境，转移至温暖的环境中时，请静候
0.5到1小时后再开箱使用。另必须保证8331A周围有足够的冷却
散热空间。音箱后方、上方以及侧方需留有最小50毫 米（ 2英 寸 ）的
净空。如果音箱采用嵌入式安装，需保证有效的通风以供散热。
音箱的安装和摆放
安装选项
Iso-Pod™桌面隔震音箱垫可以调节音箱的俯仰角度。音箱垫的导
轨可以安装于音箱背板的三个不同安装点，实现水平和垂直摆放。
音箱的声轴需指向听音位置（见图4）。将音箱对称摆放，确保每只
音箱与听音位置等距。如果可能，将听音位置设置在房间左右的中
轴线上（见图5）。当音箱距离其后方的实墙1.0-2.2米时，墙面的反
射会造成低频的抵消，减少低音输出。
将音箱远离声学反射面放置以减弱反射声的影响。桌面、柜体、电
脑显示器等带来的反射声会造成不良的声染色以及声像定位模
糊。将音箱用支架放置在调音台后上方，通常会比放置在调音台表
桥上更理想。另将声反射物体对称摆放，可以获得平衡的声像定位
（见图5）。
您可以从真力经销商处选购多种吊顶与挂墙安装配件。真力
8331A可通过背板的两个M6 x 10毫米螺纹孔适配König & Meyer
音箱挂架。另外音箱底部有一个3/8英寸粗牙螺纹孔。可通过真力
网站www.genelec.com查阅《真力配件目录（Genelec Accesories
Catalogue）》获取更多信息。
前面板指示灯
通常，前面板指示灯为绿色，表示音箱正在正常工作状态。当音箱
处于特殊状态时，指示灯会变为红色或黄色。详情请见表2。
配合低音音箱使用
如果您需要重放更低的频率，或需要多声道低频管理，真力建议
您选择7300系列低音音箱。更多有关系统设置与搭配的信息，请
参照真力官网www.genelec.com中的“产品选择工具（Genelec
Product Selection Tool）”。
维护
在音箱内部没有任何用户可调整的部分。任何关于音箱的维护或
维修都应由真力授权的维修服务人员来完成。切勿拆开音箱箱体。
拆开音箱箱体可能导致出厂校正失效以及元件受损。
安全注意事项
8331A严格按照国际安全标准设计，但您仍需注意以下警告和注
意事项，确保安全操作以及安全的音箱维护环境：
• 切勿自行拆开音箱。任何关于音箱的维护或维修都应由真力授权
的维修服务人员来完成。
• 切勿使用未连接保护地的电源，这可能会危及人身安全。
• 切勿将音箱暴露在水中或潮湿环境，这可能会导致火灾或触电。
• 切勿在音箱上或其附近摆放装有液体的物品，例如花瓶。
• 请注意，本设备采用电源插头作为断开装置。除非将电源线从音
箱上或电源插座上拔掉，否则功放并未完全与交流电源断开连接。
• 切勿阻挡音箱周围的气流。确保音箱后方有足够的空气流动，使
音箱能够充分冷却。
警告！
8331A 可以产生超过 85dB 的声压级，这可能会引起永久性听力
损伤。若聆听时间超过 8 小时/天，请将声压级控制在 80dB（A计
权）以内以降低永久听力损伤的风险。声压级每增加 3dB，聆听时
间应当减半。
质保
真力8331A针对材料和工艺上的质量问题提供2年的质保服务。通
过注册您的音箱，可将质保服务延长至5年。详细质保条款请您咨
询当地经销商。
FCC符合性声明
注意：该设备已经经过测试，符合B类数字设备的限制，且符合FCC
标准第15部分的要求。这些限制旨在提供合理的保护，防止在住
宅区安装时产生有害干扰。该设备会产生，使用并辐射射频能量，
如果未按照说明安装和使用，则可能对无线通信造成有害干扰。但
是，我们无法保证在特定安装中不产生干扰。如果设备对无线电和
电视的接收产生有害的干扰，用户可通过开关该设备进行验证，我
们建议用户采用下述一种或多种手段进行消除干扰：
13
• 重新调整天线的方向和位置。
• 增加该设备与接收器之间的距离。
• 将该设备和接收器分别连接到不同电路的插座上。
图8 上图表示8331A的水平面指向特性。 图9 上图表示8331A的垂直面指向特性。
图6 以上曲线是在自由声场中对 8331A 分别使用了低频搁架控制（Bass
Tilt）,高频搁架控制（Treble Tilt）, 桌面反射补偿（Desktop） 和低频滚降控
制（ Bass Roll-Off）后的频率响应曲线。
图7 以上曲线是当输入电平为-20dBu时，在自由声场中偏离声轴不同角度
（0
°
、15
°
、30
°
、45
°
和60
°
）测 得 8331A的频率响应曲线。
20
20k
50
100
200
500
1k 2k
5k
10k
Frequency Hz
Genelec Oy 8331 11 Mar17
0°
60°
15°
30°
45°
65
70
75
80
85
90
95
dB SPL
85
90
95
dB SWL
80
20
20k
50
100
200
500
1k 2k
5k
10k
Frequency Hz
Genelec Oy 8331A 12 May 2017
80
85
90
BASS ROLL-OFF
TREBLE TILT
80
85
90
80
85
90
DESKTOP LF
BASS TILT
dB SPL
• 向经销商或有经验的无线电/电视技术人员寻求帮助。
任何未经制造商许可的改动都将让用户丧失在FCC规定下操作设
备的权力。
图10 以上曲线表示不同频率下8331A的延时响应变化。
20k
50
100
200
500
1k 2k
5k
10k
Frequency Hz
Genelec Oy 8331 16 May 2017
ms
5
0
10
15
35
20
25
30
40
14
系统参数
低频截止频率 < 45 Hz
高频截止频率 > 37 kHz
频率响应精确度 58 Hz – 20 kHz
半开放空间内，轴上最大短时正弦波声学输出，
100 Hz - 3 kHz均值 @1米
≥ 104 dB SPL
在相同条件下，使用IEC计权噪声测试最大长期RMS声学输出
（受驱动单元保护电路限制） @1米
99 dB SPL
在听音室内，使用音乐素材进行测试，在距音箱1米处每对音箱最大峰值声学输出。 110 dB
自由场内自身噪声电平 @ 1米 轴上 (A计权) ≤ 0 dB
总谐波失真 @85 dB SPL @1米 ，轴 上 。
频率： 50�100 Hz
> 100 Hz
< 2 %
< 0.5 %
驱动单元
低音
中音
高音
双130 x 65 毫米(5
1
/
8
x 2
5
/
8
英寸)椭圆锥体
90 毫米 (3
1
/
2
英寸) 锥体 (同轴)
19 毫米 (
3
/
4
英寸) 金属球顶 (同轴)
重量 6.7千 克（ 15磅）
尺寸：
高 度（ 含 Iso-Pod防震底座）
高度（不含Iso-Pod防震底座）
宽度
深度
305毫 米（ 12英寸）
285毫米 (11
1
/
4
英寸)
189毫米 (7
1
/
2
英寸)
212毫米 (8
3
/
8
英寸)
低音功放短期输出功率
中音功放短期输出功率
高音功放短期输出功率
（长期输出功率受驱动单元保护电路限制）
72 瓦
36 瓦
36 瓦
在标称输出功率下功放系统失真参数 <0.05%
电源电压 100-240 VAC 50/60 Hz
功耗
待机
空闲
满输出（短期）
< 0.5 瓦
4 瓦
60 瓦
功放部分
8331A
模拟信号输入接口：XLR母座（平衡式10k欧姆）
最大模拟信号输入电平
模拟输入灵敏度 (100 dB SPL 在 1 米处)
输入灵敏度控制
针脚1：地
针脚2：正 极
针脚3：负 极
+25.0 dBu
-6 dBu
调整范围为从+36到-6dBu
数字信号输入接口：XLR母 座（ 110 欧）
D数字信号输出／环出接口：XLR公 座（ 110 欧）
数字信号输入
量化精度
采样范围
数字输入灵敏度 (100 dB SPL 在 1 米处)
数字信号输入最大衰减范围
AES/EBU 单线
AES/EBU 单线
16 - 24 bits
32 - 192 kHz
-30 dBFS
42 dB
控制网络
类型
连接方式
专用的真力GLM网络
2条5类网线
分频点
低频／中频
中频／高频
500 Hz
3 kHz
GLM软件频率响应调整 *
参量陷波滤波器
搁架滤波器
16
2个低频、2个高频
系统房间响应自动校准 使用真力GLM管理套件进行自动或手动校准，也可使用音箱背板
的独立控制开关（DIP开关）*
信号处理
* GLM™真力音箱管理软件包含陷波滤波器和搁架滤波器的调整，自动校准和GLM手动系统校准功能。
Genelec Document D0131R001 Copyright Genelec Oy 4.2017. All data subject to change without prior notice.
www.genelec.com
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]
真力中国
北京市朝阳区酒仙桥路10号
恒通商务园 B33-101
电话 400 700 1978
微信 真力GENELEC
微博 @真力GENELEC
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]
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