1237A and 1238A Operating Manual
Genelec Document D0114R001a Copyright Genelec Oy 6.2014. 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]
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, China
Phone +86 (10) 5823 2014
Post code: 100015
Email [email protected]
AMPLIFIER SECTION
SIGNAL PROCESSING SECTION
SYSTEM SPECIFICATIONS
1237A
1238A
Lower cut-off frequency, –3 dB
< 35 Hz
< 33 Hz
Upper cut-off frequency, –3 dB
> 21 kHz
> 21 kHz
Free field frequency response,
± 2.5 dB
37 Hz – 20 kHz
35 Hz – 20 kHz
Maximum short term sine wave
acoustic output on axis in half
space, averaged from 100 Hz to
3 kHz @ 1 m
> 118 dB SPL
> 121 dB SPL
Maximum long term RMS acous-
tic output in the same conditions
with IEC weighted noise (limited
by driver protection circuit) @
1 m
> 112 dB SPL
> 116 dB SPL
Maximum peak acoustic output
per pair in a listening room with
music material @ 2 m
> 122 dB
> 124 dB
Self generated noise level in
free space at 1 m on axis (A-
weighted)
< 10 dB
< 10 dB
Harmonic distortion at 95 dB
SPL at 1 m on axis
Freq:
50…200 Hz
> 200 Hz
< 3 %
< 0.5 %
< 1 %
< 0.5 %
Drivers
Bass
Midrange
Treble
All drivers are magnetically
shielded
305 mm (12 in)
cone
125 mm (5 in)
cone
25 mm (1 in)
metal dome
385 mm (15 in)
cone
125 mm (5 in)
cone
25 mm (1 in)
metal dome
Weight
(monitor with integrated amplifier)
42 kg (93 lb)
57 kg (126 lb)
Weight
(monitor with amplifier removed)
36 kg (80 lb)
51 kg (113 lb)
Amplifier weight
6 kg (13 lb)
Dimensions
(monitor enclosure)
Height
Width
Depth
680 mm (26
3
/
4
in)
400 mm (15
3
/
4
in)
380 mm (15 in)
810 mm (32 in)
480 mm (19 in)
420 mm (16
1
/
2
in)
Amplifier dimensions
(in rack mount configuration)
Height (front panel)
Height (amplifier casing)
Width (front panel)
Width (amplifier casing)
Depth
3U 132 mm (5
3
/
6
in)
80 mm (3
1
/
8
in)
483 mm (19 in)
425 mm (16
3
/
4
in)
252 mm (9
15
/
16
in)
1237A
1238A
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
500 W
250 W
200 W
Amplifier system THD at nominal
output
< 0.01 %
Signal to Noise ratio, referred to
full output
Bass
Midrange
Treble
>115 dB
>115 dB
>115 dB
Mains voltage
100-240 VAC, 50/60 Hz
Power consumption
Standby
Idle
Full output
<0.5 W
25 W
750 W
1237A
1238A
Analog signal input connector
XLR female, balanced 10 kOhm
Maximum analog input signal
Analog input sensitivity
(100 dB SPL at 1 m)
Analog input gain selection
pin 1 gnd
pin 2 non-inverting,
pin 3 inverting
+25.0 dBu
-6 dBu
0, +6, +12, +18 dB
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 gain selection
AES/EBU Single Wire or Dual Wire
AES/EBU Single Wire or Dual Wire
16 - 24 bits
32 - 192 kHz
-30 dBFS
0, +6, +12, +18 dB
Control network
Type
Connection
Proprietary GLM™ network
2 RJ45, CAT5 cables
Crossover frequency
Bass/Mid
Mid/Treble
450 Hz
3.0 kHz
420 Hz
3.0 kHz
GLM
TM
software frequency
response adjustment
Notch filters
Shelving filters
4 LF and 2 HF
2 LF and 2 HF
System calibration
Genelec GLM AutoCal™
