1238AC Operating Manual
Genelec Document D0114R002a Copyright Genelec Oy 9.2015. 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
1238AC
Lower cut-off frequency, –3 dB
< 33 Hz
Upper cut-off frequency, –3 dB
> 21 kHz
Free field frequency response, ± 2.0 dB
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
> 121 dB SPL
Maximum long term RMS acoustic output in
the same conditions with IEC weighted noise
(limited by driver protection circuit) @ 1 m
> 116 dB SPL
Maximum peak acoustic output per pair in a
listening room with music material @ 2 m
> 124 dB
Self generated noise level in free space at 1 m
on axis (A-weighted)
< 10 dB
Harmonic distortion at 95 dB SPL at 1 m on axis
Freq: 50…200 Hz
> 200 Hz
< 1 %
< 0.5 %
Drivers
Bass
Midrange
Treble
All drivers are magnetically shielded
2 x 250 mm (10 in)
cone
125 mm (5 in) cone
25 mm (1 in)
metal dome
Weight
Monitor enclosure
Amplifier
60 kg (130 lb)
6 kg (13 lb)
Dimensions
(monitor enclosure)
Height
Width
Depth
350 mm (13
3
/
4
in)
950 mm (37
3
/
8
in)
453 mm (17
7
/
8
in)
Amplifier dimensions
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)
1238AC
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
1238AC
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
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™
