Inter-m P-2000 Manuale utente

P-2000/P-3200

Power Amplifier

P-2000/P-3200 Power Amplifier

Contents

Welcome ..................................................................................................................................... 3

Unpacking ............................................................................................................................... 3

Warnings .................................................................................................................................. 3

Operation................................................................................................................................. 5

Power Amplifier ....................................................................................................................... 6

Features ....................................................................................................................................... 6

Front Panel Controls.................................................................................................................... 7

Operational Modes .................................................................................................................. 11

Speaker Impedance and Connections .............................................................................. 11

Speaker Connection Procedures............................................................................................ 12

Speaker Cable ...................................................................................................................... 13

Maintaining Proper Polarity .................................................................................................. 13

Rack Mounting Your Amplifier ............................................................................................. 13

Block Diagram .......................................................................................................................... 14

Specifications............................................................................................................................ 15

P-2000/P-3200 Power Amplifier

Welcome

A personal welcome to you from the management and employees of Inter-M

Thank you for purchasing this fine Inter-M product. All of us here at Inter-M are dedicated

to providing you with the highest quality products and the best value.

We sincerely trust this product will provide you with years of satisfactory service, but if

anything is not to your complete satisfaction, we will endeavor to make things right.

Welcome to Inter-M, and thank you for becoming a part of our worldwide extended

family!

Unpacking

Although your P-2000/P-3200 Power Amplifier is neither complicated nor difficult to

operate, we recommend you take a few minutes to read this brief manual and

familiarize yourself with the important information regarding product features, setup and

operation.

As with most electronic devices, we strongly recommend you retain the original

packaging. In the unlikely event the product must be returned for servicing, the original

packaging (or reasonable equivalent) is required.

Warnings

Environment

Never place this product in an environment that could alter its performance or reduce its

service life. Such environments are usually characterized by high levels of heat, dust,

moisture, or vibration.

Safety

1. Read these instructions carefully.

2. Follow all instructions.

3. Keep all warnings.

4. Do not operate this apparatus near water.

5. Clean only with a damp cloth.

6. Do not block any of the ventilation openings.

7. Install only in accordance with the instructions in this manual.

P-2000/P-3200 Power Amplifier

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other

devices (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized

plug has two blades, with one wider than the other. A grounding type plug has two

blades and a third grounding prong. The wide blade or the third prong is provided for

your safety. If the provided plug does not fit into your outlet, consult an electrician for

replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched, particularly at plugs,

convenience receptacles, and the point where it is attached to the apparatus.

11. Use only the attachments/accessories specified.

12. Use only with a cart, stand, tripod, bracket, or table specified, or sold with the

apparatus. When a cart is used, use caution when moving the cart/apparatus

combination to avoid overturning.

13. Unplug this apparatus during lightning storms or when unused for long periods of

time.

14. Refer all servicing to qualified service personnel. Servicing is required when the

apparatus has been damaged in any way, such as power supply cord or plug is

damaged, liquid has been spilled or objects have fallen into the apparatus, the

apparatus has been exposed to rain or moisture, does not operate normally, or

has been dropped.

P-2000/P-3200 Power Amplifier

Operation

Make certain that speakers and input sources are properly connected before switching

on.

Keep volume levels at minimum gain before switching on.

NOTE: The system’s operation is delayed by approximately three seconds after pressing

the AC Mains power switch. This is due to the built-in protection circuitry, designed to

protect speakers and other system components.

P-2000/P-3200 Power Amplifier

P-2000/P-3200

Power Amplifier

Features

Dual Power Supply

• Individual power supplies for Left and Right channels for true dependability.

Advanced Protection Circuitry

• Thermal and current overload protection, short and open circuit protection,

ultrasonic and RF protection circuitry for component and loudspeaker protection.

Ultra-Efficient Cooling System

• Temperature-sensing variable speed fan for reliable thermal control to prevent

overheating.

Bridged Mono and Input Parallel Operation

• Bridged mono and input parallel modes for increased power and versatility.

Versatile Connectivity

• Balanced inputs on hybrid XLR/TRS connectors, as well as speaker connect and five-

way binding post output connectors to accommodate a wide array of system

options.

Slim Design, Compact Size

• Streamlined design fits in a compact 3RU space.

P-2000/P-3200 Power Amplifier

Front Panel Controls

1. Power Switch

Pushing this switch up switches the unit on. Pushing it down switches the unit off.

2. Power Indicator LED

When the unit is powered on, the Power LED will glow steadily.

3. Input Attenuators

These are detented controls for regulating each channel’s input level. Clockwise

rotation increases gain.

4. Output Level Indicators

These LEDs indicate the amplifier’s output status, lighting when audio signal

reaches –30dB and –15dB.

5. Clip Indicators

The red CLIP LED indicates an excessive output level, lighting when distortion

reaches approximately 1%. Do not operate the unit with the CLIP LED steadily on

(illuminated).

6. Protection Indicator

This LED indicates the state of the amplifier’s protection circuitry. When the

Protection LED is on (illuminated), the protection circuitry is active, indicating that

the unit is not operating normally. This is typically due to overheating or power

limiting. Please check the Input and Output condition of the amplifier.

(Note that the Protection Indicator lights for approximately six seconds when the

amplifier is first powered on.)

The amplifier offers the following modes of protection:

Thermal Protection: Activates when internal operating temperature exceeds 100˚

Celsius.

P-2000/P-3200 Power Amplifier

Full Short Protection: Full output current peak of up to 25 amperes (50 amperes at

120VAC) is permitted, but if the output is shorted the current is reduced to

approximately 25% of normal output.

Compressor/Limiting: When maximum output power is reached, output level will

be reduced to avoid distortion.

RF Protection: Maximum available power is reduced above 15kHz without

affecting frequency response at normal signal levels, to protect high-frequency

drivers from high-frequency oscillation burnout.

DC Fault Protection: DC detection circuitry shuts the speaker output when a DC

fault voltage of ±3dB or greater is detected.

Power On/Off Muting: Audio to speakers is delayed for several seconds on

powering on and off to reduce potential speaker damage from transients.

Active Inrush Current Protection: Inrush current is limited by a NTC (Negative

Temperature Coefficient) resistor which is engaged when inrush resistance is

detected and then diminished gradually to avoid loss of power.

P-2000/P-3200 Power Amplifier

Rear Panel Controls

1. AC Input

Connect this cable to a standard AC outlet.

2. Input and Link Output Connectors

Balanced input connectors are provided on hybrid XLR/TRS jacks. Link output

connectors are provided on three-pin XLR connectors, and are used to operate

multiple amplifiers in parallel mode. (When operating in bridged mono mode,

only channel one input is active.)

Wiring for the input and link connectors is shown below:

3. Speaker Output Terminals

These five-way binding posts and speaker connect jacks are used to connect

speakers to the unit.

P-2000/P-3200 Power Amplifier

Speakers may be connected in Stereo or Bridged Mono mode. Please refer to the

illustrations below.

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