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Manager™ (GLM™) network. Do not 
connect to Ethernet LAN. 

“Loudspeaker Connectors” Group

These connectors are used for connecting 
the rack mounted RAM-L amplifier to the 
monitor enclosure. 

1.  “LED” Connector 

This RJ45 socket is a connection for 
the front panel warning LED.

2.  “Woofer” Connector 

A standard four-pole Speakon cable 
connects to the woofer.

3.  Midrange/Tweeter” Connector 

A standard four-pole Speakon cable 
connects to the the midrange and 
tweeter.

Connecting Cables

Insert the connectors into the appropriate 
sockets “WOOFER”, “MIDRANGE/
TWEETER” and “LED CONNECTOR” found 
on the rear panel of the amplifier unit and the 
rear of the monitor. Note that each RAM-L 
amplifier is individually calibrated for use with 
the monitor enclosure that it is delivered with 
and marked with the same serial number. Do 
not mix these amplifier/monitor pairs.

Figure 3. GLM network cabling

Figure 1. The location of the acoustic axis. 

L

R

C

30

0

RS

LS

100 120

0 -

0

Figure 2. Recommended placement 
and alignment of monitors in a 5-chan-
nel system (ITU-R BS.775-1)

Figure 4. Connector panel of the RAM-L amplifier.

LED CONNECTOR

CONNECT ONLY TO GENELEC NETWORK.

ANALOG

IN

DIGITAL IN

AES/EBU

DIGITAL THRU

AES/EBU

MAINS INPUT
50 / 60 Hz 750 W
100 - 230 V~

SERIAL NUMBER

MIDRANGE /

TWEETER

WOOFER

LOUDSPEAKER CONNECTORS

RAM-L AMPLIFIER

MODULE

www.genelec.com

MADE IN FINLAND

CONTROL NETWORK

2

1 3

THRU

IN

1

1

2 3

3

2

-

GND

+

DIRECT

LOUDSPEAKER

CONNECTOR

CONSULT OPERATING

MANUAL BEFORE

OPENING !

ANALOG
AUDIO
INPUT

DIGITAL
AUDIO
INPUT

DIGITAL
THRU
CONNECTOR

CONTROL
NETWORK
CONNECTORS

LOUDSPEAKER CONNECTOR GROUP

MAINS
CONNECTOR

Cable gauge

Max. length

2.0 mm

2

 (14 AWG)

30 m (100 ft)

3.3 mm

2

 (12 AWG)

40 m (130 ft)

5.3 mm

2

 (10 AWG)

60 m (200 ft)

Table 1. Recommended cable thicknesses 
for different lengths of signal cable

LISTENING

POSITION

MICROPHONE

GLM
NETWORK

GLM

NETWORK

GLM
NETWORK

USB

RAM-L

RAM-L

RAM-L

a

272 mm
10 3/4 in

196 mm
7 3/4 in

a

235 mm
9 1/4 in

456 mm

17 15/16 in

Summary of Contents for SAM 1238DF

Page 1: ...Genelec 1238DF Smart Active Monitor Operating Manual 1238DF ...

Page 2: ...ssible ambient temperature is 15 35 degrees Celsius 50 95 F and permissible relative humidity between 20 and 80 Humidity condensation on the product is not allowed during use For instance if the product has been stored or transported in a cool environment and then taken into a warm room it must be allowed to warm up to the ambient temperature before connecting to mains power Mounting Consideration...

Page 3: ...ng Figure 1 The location of the acoustic axis L R C 30 0 RS LS 100 120 0 0 Figure 2 Recommended placement and alignment of monitors in a 5 chan nel system ITU R BS 775 1 Figure 4 Connector panel of the RAM L amplifier LED CONNECTOR CONNECT ONLY TO GENELEC NETWORK ANALOG IN DIGITAL IN AES EBU DIGITAL THRU AES EBU MAINS INPUT 50 60 Hz 750 W 100 230 V SERIAL NUMBER MIDRANGE TWEETER WOOFER LOUDSPEAKER...

Page 4: ...ghts on steadily when the turn on has been completed Testing modes are explained later in this manual Setting ISS The Intelligent Signal Sensing ISS puts the monitor to a power saving stand by mode automatically The factory setting for ISS is OFF The ISS can be activated using the GLM software see Figure 5 When ISS is active if no audio signal is sensed during the selected time the monitor powers ...

Page 5: ...he speaker in a wall constructed of wood Figure 7 Flush mounting the speaker in a wall constructed of concrete Figure 8 Flush mounting the speaker in a wall constructed of a combination of materials CONCRETE STRUCTURE VIBRATION ISOLATORS f 2 8 Hz MULTI LAYERED WALL WOOD CONCRETE BRICKS VIBRATION ISOLATORS f 2 8 Hz CONCRETE WALL SAND BAGS VIBRATION ISOLATORS f 2 8 Hz HEAVY WOODEN WALL ABSORBING MAT...

Page 6: ...rect the interference by one or more of the following measures 1 Reorient or relocate the receiving antenna 2 Increase the separation between the equipment and receiver 3 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected 4 Consult the dealer or an experienced radio TV technician for help Modifications not expressly approved by the manufacturer...

Page 7: ... 15 30 45 50 100 55 60 65 70 75 80 85 90 95 d B r A Figure 10 Horizontal directivity characteristics of the 1238DF Figure 11 Vertical directivity characteristics of the 1238DF Figure 12 Horizontal directivity characteristics of the 1238DF The lower curve is the monitor s power response ...

Page 8: ...l dome Weight Monitor enclosure Amplifier 36 kg 79 lb 6 kg 13 lb Dimensions monitor enclosure Height Width Depth 610 mm 24 in 470 mm 181 2 in 257 mm 101 8 in Amplifier dimensions Height front panel Height amplifier casing Width front panel Width amplifier casing Depth 3U 132 mm 53 6 in 80 mm 31 8 in 483 mm 19 in 425 mm 163 4 in 252 mm 915 16 in 1238DF Bass amplifier short term output power Midrang...

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