Loyola Enterprises

A veteran and minority owned SDB Certified Business.

Electro-Voice















Electro-Voice P 2000


757.498.6118 Ext - 109P 2000 - Call for pricing - Power Amplifier

Downloads

PDFP 2000 Specifications (pdf)

PDFP 2000 Manual (pdf)


Operation

Front Panel

Front Panel

1. Level Control
Calibrated detented potentiometers to alter the total gain of the power amplifier. In order to avoid distortion in mixing consoles upstream, these controls should normally be positioned between 0 dB and -6 dB. The calibrated markings show the additional attenuation directly.

2. Power ON indication
This LED lights up when the mains switch is pressed. If it does not light up, the unit is not connected to the mains or the mains fuse has blown.

3. Input indication
This LED lights up if a signal is present at the power ampifier input. The indicator does not light up when the input controls are turned down completely.

4. Output indication
This LED lights up if a signal is present at the power amplifier output. The indicator goes off when the speaker line has shorted or a protective circuit has been activated thus indicating that there is no signal at the speaker output terminals.

5. LIMIT
This LED lights up if the limiter has been activated and the power amplifier is being operated at the clip level. If the LED flashes briefly, this is not a cause for concern. If the LED is lit permanently, the volume should be reduced to avoid overload damages to the connected loudspeaker systems.

6. PROTECT
When this LED lights up during operation, one of the protection circuits against over-temperature, overload, shorted outputs, radio frequency interference or DC faults has been triggered. The cause of the error (e.g. a shorted loudspeaker line) must be remedied. In case of overheating, wait a little until the amplifier switches back to operating mode itself.

7. POWER Switch
The unit is switched on via the power switch. The loudspeaker outputs are switched on via delayed relays so that no startup transients are audible. A current limiter prevents startup peaks on the mains line and prevents the mains fuse from blowing.

Rear Panel

Rear Panel

8. Power amplifier input connectors
XLR connectors (male) are provided for "Looping" the signal to other power amplifiers. These are wired parallel to the XLR input connectors in each channel.

The inputs of the power amplifier are elctronically balanced and wired according to IEC 268. Isolation transformers can be retrofitted in order to avoid hum interference in larger sound reinforcement systems.

Input wiring XLR. PIN 1: SHIELD; PIN 2: a, +, hot; PIN 3: b, -, cold. The inputs are electronically balanced. The input sensitivity is set to 0dBu (775 mV) by the factory.

Many mixing consoles have XLR connectors in the outputs, but are wired in such a way that they are unbalanced. If a mixer is used with unbalanced outputs, PIN 1 and PIN 3 of the power amplifier’s input connectors must be connected by a jumper or PIN 3 must not be connected to the connection cable.

If signals are taken from unbalanced units via PIN 3 (b, -, cold) and PIN 2 (a, +, hot), strange hum interference or high frequency oscillations can occur. These effects can cause power amplifiers or loudspeakers to malfunction.

9. Input Routing
PARALLEL MONO: If the mode selector is in position PARALLEL MONO, the input connectors channel A and B are directly wired in parallel, but the volume for channel A or B can be adjusted independently using the input controls A or B.

DUAL STEREO: If the mode selector is in position DUAL STEREO, channel A and B are amplified separately.

10. Power Amplifier Output Connectors
SPEAKON output connectors are provided for the power amplifier channels A (left) and B (right). The Bridged Out connector for bridged operation is sealed with a plastic cover to prevent connection errors.

WARNING:
Please make sure not to hook speakers up to the BRIDGED Output in NORMAL mode or damage will result.

11. LIMITER
The time constant of the built-in limiter to avoid overdriving is adjustable. Position "SLOW" is the factory preset and this should also be the normal position.

If the power amplifier is used as a MID/HI-frequency amplifier in active multi-way systems, the limiter switch should be set to "FAST".

If the power amplifier is used as a LOW-frequency amplifier in active multi-way systems, the limiter switch should be set to "SLOW".

12. BRIDGED MODE
Slide switch to change from Normal Stereo mode to Bridged mode. In Bridged mode the built-in power amplifiers operate in "push-pull" and the double output voltage from channel A and B appears at the Bridged output connector. The phases of Channel A and B are in opposite and therefore the individual channels must not be used as loudspeaker outputs.

13. HI-LO-CUT FILTER
This filter attenuates subsonic and high frequency signals so that the power amplifiers are not modulated with these signals. This switch should normally always be in position ON. The OFF position is only for applications where an upstream unit, e.g. a crossover or an equalizer, has integrated HI-Cut and LO-Cut filters.

14. Groundlift Switch
Hum loops can be avoided with the groundlift switch. If the power amplifier is operated together with other units in one 19" rack, the switch should be in GROUNDED position. If the power amplifier is used with units which have different earthing potentials, the switch should be adjusted to the UNGROUNDED position.

Purchasing
For pricing options and packages, contact us at
757.498.6118 Ext - 109, Or