Figure 6. Front panel of the RAM1 amplifier | Figure 7. Rear panel of the RAM1 amplifier |
the binding posts. If you have lost the cable binding post tool then a large screwdriver will also work, but be careful not to overtighten the binding posts as they may be damaged.
The RAM1 has two parallel 10 kOhm input connectors: a balanced XLR and an unbalanced RCA. For longer cable connection lengths (>10m or >30ft) a balanced line connection is recommended as it offers better immunity to external interference. However, the RCA connection method is more commonly available and usually works as well for shorter connection lengths in less electrically noisy environments. Do not use both inputs at the same time. Consult your Genelec dealer for the choice of signal cables.
The RAM1 has a provision for remote controlled switching between “ON” and “STANDBY” modes. The “REMOTE CONTROL” connector block has two connector pairs:
Space requirement for the RAM1 amplifier
The dual 120 W power amplifiers of a RAM1 unit generate a large amount of heat when used at full power. To avoid overheating, ensure that there is good airflow around the amplifier and no external heat sources close to it. We recommend installing the RAM1 into a well ventilated equipment rack using its dedicated RM1 rack mount kit.
If the RAM1 amplifier is placed in a cabinet, on a shelf or into an equipment rack without its dedicated RM1 rack mount kit, there must be at least 100 mm (4”) of free space behind, 150 mm (6”) above and 50 mm (2”) on both sides of the amplifier to ensure adequate cooling (see figure 8).
Mounting the RAM1 amplifier to an equipment rack
We recommend that you use the Genelec RM1 rack mount kit when installing the RAM1 amplifier in an equipment rack. Make sure that the space above and below the RAM1 is uncluttered and there is a space of 100 mm (4”) or more behind the ampli- fier. The space behind the amplifier must be well ventilated. If the temperature inside the rack is likely to rise close to RAM1’s maximum ambient temperature of 35° C (95° F), we recommend installing ventilation fans to ensure that the thermal protection is not activated prematurely.
Attach the RAM1 to the RM1 rack mount with two M3 screws provided with the rack mount kit. The screws go through the holes on the RM1’s shelf plate (see Figure 9 ). Each RM1 can take three RAM1 units. Two blanking plates are provided to cover empty spaces in the rack if only one or two RAM1’s are installed.
Setting the input sensitivity
The input sensitivity of each speaker can be made to match that of the decoder or other source by use of the input sensitivity control on the amplifier’s front panel (see figure 6). A small screwdriver is needed for the adjust- ment. The manufacturer default setting for this control is
Remote | Pole or | Connect to | |
remote control | |||
control type | contact | ||
input pin no. | |||
|
| ||
|
|
| |
12 V DC | + | 1 | |
remote |
|
| |
- | 2 | ||
control | |||
|
|
| |
External | Contact 1 | 3 | |
switch or |
|
| |
Contact 2 | 4 | ||
relay | |||
|
|
|
Connect only one remote control unit at a time
Table 2. Remote control connectors on the RAM1.
(1.22V) is needed in this setting. Most pre- amplifiers are capable of this output level.
Setting the room response controls
The acoustic response of the system may have to be adjusted to match the acoustic environment and personal taste. See Table 3 for suggested room response control settings in differing acoustic environments. If the sound is found subjectively too bright, set
Figure 8. Minimum space requirement of the RAM1 amplifier when not installed with Genelec RM1 rack mount.
Figure 9. Attaching the RAM1 to Genelec RM1 rack mount