6EUROPOWER EP4000/EP2000 User Manual

2.2Rear panel

(7)

(8)

(11)

(12)

(13)

(14)

(9)(10)

Fig. 2.2: Rear panel control elements

(7)These are the balanced XLR inputs (channels 1 and 2).

(8)These are the stereo ¼" TRS inputs (channels 1 and 2). They can also be used with unbalanced plugs.

(9)These are the MODE switches, used to alter the operating modes as well as to set the limiters and high-pass filters (see chapter 2.3).

(10)The unit’s fan is located here. Fan speed adjusts automatically to assure trouble-free operation.

◊To prevent faulty operation, please assure that the unit is kept at a distance from other appliances emanating heat.

(11)These are the SPEAKER OUTPUTS (channels 1 and 2). When running the unit in mono-bridged mode (see chapter 2.3.5), please use the channel 1 output exclusively. For further information on the connectors please refer to chapter 4.1.

(12)These are the OUTPUT TERMINALS (channels 1 and 2). When running in mono, please make sure to use both middle connectors to connect your loudspeaker.

(13)BREAKER (automated fuse). After eliminating the cause of faulty operation, simply depress the BREAKER and power up the unit again. The BREAKER acts in place of common discardable fuses.

!!Caution

◊Before engaging the BREAKER switch, you should power down the unit (POWER switch set to OFF)!

(14)POWER is supplied via an IEC connector. The matching cable is provided with the unit.

(15)SERIAL NUMBER of your EUROPOWER.

(16)Here you can find a detailed overview of the individual MODE SWITCHES functions (9)).

(16)(15)

2.3 Configuration switches (MODE SWITCHES)

Fig. 2.3: Dip-switches

2.3.1 Clip limiter

When the input signal connected to your amp is too high, you end up with a distorted output signal. To prevent this, both channels of your EUROPOWER feature a clip limiter that can be engaged or disengaged selectively. The limiters automatically recognize distortion and lower amplification until distortion is reduced to a tolerable level. To preserve the dynamic characteristics of the signal when low distortion levels are occurring, the clip limiters function with moderate suppression. Use switches 1 (ch. 1) and 10 (ch. 2) to activate the clip limiters.

When using broadband loudspeaker systems, the clip limiter reduces high frequency distortions which occur when an amplifier is overloaded. The drivers are thus protected from being damaged.

2.3.2 Input filter

The LF (high-pass) filter removes frequencies below 30 and 50 Hz respectively. The reproduction of the signal’s bass portion is thus optimized, since ultra-low, distracting frequencies are eliminated, and more power is available for the reproduction of the wanted segment of the signal. Engaging and disengaging the filters is done by using the switches 3 (ch. 1) and 8 (ch. 2). Switches 2 (ch. 1) and 9 (ch. 2) determine the cut-off frequency. As long as the filter is disengaged, frequencies below 5 Hz are cut to prevent damage.

You should set up the filters so they best suit the frequency response of your speakers, since some speakers (e.g. bass reflex speakers) are particularly sensitive to over-excursion below the listed frequency range.