KV2 audio ESR2800D High Definition Amplifier User Guide

KV2 audio ESR2800D High Definition Amplifier

Important Safety Instructions

Before using your ESR2800D Amplifier, be sure to carefully read the applicable items of these operating instructions and the safety suggestions.

1. Read all product instructions.

2. Keep printed instructions, do not throw away.

3. Respect and rewiew all warnings.

4. Follow all instructions.

5. Do not use this unit near water, in unprotected out door areas or in rain or wet conditions.

6. Clean only with dry cloth.

7. Do not block any ventilation openings.

8. Install in accordance with KV2 Audio’s recommended installation instructions.

9. Do not install near any heat sources such as heat radiators, heat registers, stoves or other apparatus that produce heat.

10. Do not defeat the safety purpose of the grounding type plug. A grounding type plug has two blades and a third grounding connector. The third connector is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

11. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles.

The AC mains plug or appliance coupler shall remain readily accessible for operation.

12. Only use accessories specified by KV2 Audio.

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

14. Refer all servicing to qualified service personnel. Servicing is required when the Amplifier has been damaged in any way, such as when the power-supply cord or plug has been damaged; liquid has been spilled or objects have fallen into the Vents; rain or moisture has entered the Amplifier; the Amplifier has been dropped; or when for undetermined reasons the Amplifier does not operate normally.

15. Do not remove front or back panels. Removal of the panel will expose hazardous voltages. There are no user serviceable parts inside and removable may void the warranty.

16. An experienced user shall always supervise this professional audio equipment.

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE PANELS. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.

WARNING: To prevent fire or electric shock, do not expose this equipment to rain or moisture.

SAFETY SUMMARY
To reduce the risk of electric shock, disconnect the Amplifier from the AC mains before installing audio cable. Reconnect the power cord only after making all signal connections. Connect the Amplifier to a two pole, three- wire grounding mains receptacle. The receptacle must be connected to a fuse or circuit breaker. Connection to any other type of receptacle poses a shock hazard and may violate local electrical codes. Do not allow water or any foreign object to get inside the Amplifier. Do not put objects containing liquid on or near the unit. To reduce the risk of overheating the Amplifier, avoid exposing it to direct sunlight. Do not install the unit near heat- emitting appliances, such as a room heater or stove. This Amplifier contains potentially hazardous voltages. Do not attempt to disassemble the unit. The unit contains no user serviceable parts, repairs should be performed only by factory trained service personnel.

Application

Specifically designed as the amplification and control elements for the ESR212 loudspeaker system in a 4RU mount module

• Fixed Installations
• Music venues
• Classical and opera concerts

Introduction

The ESR2800D is three-way, active control and amplification system specially designed for the KV2 Audio ESR full range series loudspeaker systems. It houses all signal processing and amplification, as well as providing control and crossover function for an external subwoofer cabinet if needed utilizing an external amplifier. The ESR2800D powers the ESR212. Each unit incorporates six amplifiers consisting of two 100-watt, Class AB, push pull, low intermodulation amplifier for high frequencies, two 200-watt, Class AB, push pull, low intermodulation design for mids and two 1000-watt, high-efficiency, current- enhancing switch mode technology amplifiers for bass. The ESR2800D stereo configuration powers two ESR cabinets accordingly.

Features

The amplifier compliment inside the ESR2800D Amplifier is as follows:

• High Frequency – 2x 100-watt, Class AB, push pull, low intermodulation design
• Mid Frequency – 2x 200-watt, Class AB, push pull, low intermodulation design
• Low Frequency – 2x 1000-watt, high-efficiency, current-enhancing switch mode

Getting Started

Unpacking
Unpack the ESR2800D Amplifier and check for any damage. If you find any damage, notify your supplier immediately. Only the consignee may institute a claim with the carrier for damage incurred during shipping. Be sure to save the carton and all packing materials for the carrier’s inspection. Should you ever need to ship the unit, only use the original factory packaging. If the shipping carton is unavailable, contact your supplier to obtain a replacement.

The ESR2800D Amplifier carton should contain:

• ESR2800D Amplifier control unit
• This user guide
• Two PowerCon detachable power cables

Amplifier rack mounting
The ESR2800D Amplifier is 4 rack units in height and will mount in standard 19″ rack systems. Integral rear mounting rack ears are also provided for additional support, do not rely on fixing and mounting the amplifier using just the front panel as support. Use eight screws and washers to mount the amplifier to the equipment rack rails. We recommend using a shock mounted rack for touring use to prolong the life of your amplifier.

Cooling
The ESR2800D Amplifier has a comprehensive cooling system featuring chassis sealed PCB board mounting and shock mounted, speed controlled fans. This means that the cooling system never drives air across PCB boards, connectors or components, ensuring prolonged electronic component lifespan and minimizing maintenance cycles.
Air is drawn into the front of the amplifer by the two fans on the rear panel, this passes over the cooling fans of the heat sinks and exhausts through the rear. If the heat sink gets too hot, its sensing circuit will open the output relay, disconnecting the load. It is important to have an adequate air supply at the front of the amplifier, and enough space around the rear of the amplifier to allow the cooling air to escape. If the unit is rack mounted, do not use doors or covers on the rear of the rack, the exhaust air must flow without restriction. If you are using racks with closed backs, use fans on the rear rack panel to ensure an ample air supply.

IMPORTANT! Please note that for correct full performance of the unit AND ANY WARRANTY COVER, it is important that regular maintenance of the front vents and filters as well as the rear panel fans be inspected and cleaned by removing any dust and debris build-up. Any product failure due to lack of attention in this matter will immediately void any current warranty. (Please refer to notes re ventilation procedures).

AC Requirements
Two PowerCon cables are provided to connect the ESR2800D Amplifier to a suitable AC power supplies. Each cable powers each separate amplifier channel for sufficient current delivery.

• The PowerCon is a connector without breaking capacity, i.e. the PowerCon should not be connected or disconnected under load or while it is live. Always isolate your AC supply before disconnecting the PowerCon connector.
• The ESR2800D amplifier operates in either 115V, 230V or 250V modes. Although pre-configured at the factory, the unit’s operating voltage mode can be changed in the field. Amplifier power plug must remain readily operable.
• Your amplifier will be supplied preset to the voltage used in your area. The table below provides typical current draw figures for the ESR2800D Amplifier.
• The receptacle must be connected to a fuse or circuit breaker. Connection to any other type of receptacle poses a shock hazard and may violate local electrical codes.
• Do not allow water or any foreign object to get inside the amplifier. Do not put objects containing liquid on or near tne unit. To reduce the risk of overheating the amplifier, avoid exposing it to direct sunlight.
• Do not install the unit near heat-emitting appliances, such as a room heater or stove. This amplifier contains potentially hazardous voltages. Do not attempt to disassemble the unit. The unit contains no user serviceable parts, repairs should be performed only by factory trained service personnel.

AC Input| Current draw with amplifier running at Average

Power (Each Channel)

| Current draw with amplifier running at

Peak Power (Each Channel)

---|---|---
250V| 3.2A| 5A
230V| 3.5A| 5.4A
115V| 7A| 11A

Features

Front Panel

1. AC Mains Switch
   The ESR2800D has combination AC mains switch/circuit breakers on the front panel. If either of the switches shut off during normal use, push it back to the ON position once. If it will not stay on you should take the unit to qualified service personnel to have it serviced..

2. Power / Thermal
   These are dual colour LED’s. When green they indicate that the Power Switch is ON and that channel of the amplifier is powered up. When red they indicate that that channel has overheated and shut down. The unit will Auto Reset after it cools down to a safe operating temperature.

3. Signal / Speaker Protection
   Indicator These are dual colour LED’s. When green they indicate that signal is present at the Input to that particular channel of the amplifier. When yellow they indicate that the audio speaker protection limiter has been activated for that particular channel of the amplifier.

4. Display
   Shows the set parameters and allows settings of various functions in the menu.

5. Rotation encoder with Enter push-button
   The encoder serves as the main way for increasing (clockwise), or decreasing (counter clockwise) values and menu positions. The encoder also serves as the ENTER (PUSH) button, allowing the operator to enter/leave the submenu in the main menu.

Rear Panel

1. Main Input / Through Out
   These are the input XLR connectors for channel A & B with associated ‘Through Output’ connectors for sending signal
   to other devices.

2. Sub out Balanced XLR output connector
   Sub out Balanced XLR output connector, crossed over LPF, used to connect additional subwoofers. This output is still active even when FULL RANGE mode is activated.

3. PowerCon Power Connector
   The ESR2800D Amplifier uses two connectors per two channel. Each connector supplies one channel. They accept standard PowerCon terminated AC Mains cables.

4. Fans
   The cooling fans operate continuously while the ESR2800D is on. An internal temperature sensor increases the speed of the fans during high temperature conditions. Air enters through the front grille and exits through the rear. Be sure to allow adequate air flow to the front of the rack in which the ESR2800D is mounted.

Rear Panel

Reset
Serves as factory reset button. Resets all setup, including network settings (default settings AutoIP/DHCP). Use a tool with maximal diameter 2mm.

Status
LEDs indicates amplifier and amplifier diagnostics status, these are:

AMP
Dual colour LED. When green, it indicates that the power amplifier is powered up and all monitored parameters are OK. When red, it indicates that amplifier is off, or some problem with the amplifier has occured, more information can be obtained via Ethernet.

POE
When green, it indicates that the diagnostics unit is powered via Power over Ethernet device.

DHCP
When green, it indicates that the diagnostics Ethernet IP address is assigned from the DHCP server.

Ethernet connector
Serves as a external communication port supporting Ethernet standard, accepts RJ45, T-658B wiring. The ESR2800D provides web-server and SNMP (Simple network management protocol). When the Ethernet cable is connected and devices successfully establish a connection, the green LED is activated. When Ethernet communication is in progress, the orange LED flashes.

Speaker AP6 Connectors
Accepts a standard AP6 terminated loudspeaker cable for connecting up to a single ESR212 cabinet. We recommend using 2.5mm/core cables

Display menu description

Display menu description
The ESR2800D has four main display screens for indication and setup. Main screens are: MAIN – for input levels and mutes. SUB for subwoofer output levels and mutes. SETUP for SUB MONO mode, FULL RANGE mode and factory reset. NET for network IP address and name indication.

MAIN

MUTE
Mute switch set channel A&B mute on / off.

VOL
Sets the amplifier input sensitivity in range from -24 to +6 dBu with 0,5dB step.

BAND MUTE
Mute switch set LOW, MID, HI band mute on / off.

SUB

MUTE
Mute switch set SUB OUT A&B output mute on / off.

VOL
Sets the SUB OUT level in range from -24 to +6 dBu with 0,5dB step.

SETUP

SUM MONO
Switch, sets SUB OUT outputs summing SUB OUT outputs channel A and B together.

FULL RANGE
Switch, selects the amplifier crossover setup, when ON full range signal is reproduced by ESR212 cabinets, when OFF signal is by frequency band in conjunction with the subwoofer output setup. Internal crossover frequency is 70Hz.

FACTORY RESET
Resets the ESR2800D amplifier channels settings to factory default. Device identification, Security and Network setup may be reset using the rear panel reset button.

NET

• NAME: Displays amplifier name.
• IP: Displays assigned network address.
• MASK: Displays assigned network subnet mask.

Amplifier name and IP address may be changed using web-server.

ESR2800D Web-server
The ESR2800D web-server is accessible using a standard web browser on PC or mobile device. The appropriate ESR2800D network address must be set to access web-server. The web-browser device IP address must be set from the same network range and must be connected into the same network.
IP addresses are assigned to networked devices when they are configured for a specific network. The way that they are assigned can be static or dynamic.

The ESR2800D network address may be set several ways:
Auto IP (Default) Automatic Private IP Addressing, is a method of automatically assigning IP addresses to networked devices.
A networked device configured to use Auto IP first makes a request to a DHCP server for an address. If the device does
not receive an IP address, which happens when there is no DHCP server on the network or when the DHCP server is not responding, the device assigns itself an address. Auto IP addresses always follow this pattern: 169.254.x.y, where x and y are any two numbers between 0 and 255. Unlike DHCP, Auto IP does not require a router or a separate server to assign an IP address. The selected IP address is displayed on display – section NET, or can be obtained using the KV2 diagtool software.

DHCP
Dynamic Host Configuration Protocol. A DHCP server enables network devices to request IP addresses and networking parameters automatically from the DHCP server, reducing the need for a network administrator or a user to manually assign IP addresses to all network devices. The assigned IP address is displayed on display – section NET, or can be obtained using the KV2 diagtool software. It is important to know that a dynamic IP address can change. If a network device with a dynamic IP address suddenly stops responding at its IP address, it is possible that it has obtained a new lease and its address has changed.

Static
A static IP address must be manually assigned to a network device. This address is typed by the person who sets up devices on the network, and it never changes. A static IP address changes when the person who administers the network specifically changes it.

Web-server page
Open the ESR2800D web-server, use the ESR2800D IP address, which is shown on display – section NET, or can be obtained using the KV2 diagtool software.

Overview

Shows the amplifier basic information.

Basic Information
Shows the information assigned by user of the amplifier: Description, Amplifier name, Location, Contact, Uptime.

Network status
Shows the amplifier ethernet network address, netmask, mode and status.

Power
Shows the amplifier power sources status: Mains power, Channel A & B power sources, Power over Ethernet.

Temperature
Shows the amplifier channel A & B heat sinks temperatures, Diagnostic CPU temperature.

Channels

Shows the amplifier control parameters and amplifier diagnostics information.

Control
Changes the amplifier A&B control parameters, Full range (ON or OFF) , SUB Mono (ON or OFF), Mute (RED = amplifier muted), Input level (-24 to +6 dB), SUB level (-24 to +6 dB), Band mute (SUB, LOW, MID, HI mute ON or OFF)

Diagnostics
Shows amplifier diagnostics information.

Signal
Green when input signal is present.

Speaker protection
Orange when speaker protection hits.

Temperature
Shows the amplifier channel A & B heat sinks temperatures.

Output voltage
Shows the amplifier speaker output voltage.

Output current
Shows the amplifier speaker output current.

Diagnostics

Shows the ESR2800D amplifier and its components diagnostics information. Dual colour – Green = OK / Red = no power or some problem occurs.

Device
Sums ESR2800D diagnostics together

Channel A & B
Sums amplifier channel diagnostics information: Power source, Temperature, Health (amplifiers A / B LOW, MID, HI working OK with dedicated gain)

Temperature
Displays amplifiers heat sinks A & B temperatures (°C).

Protection
When red they indicate that that channel has overheated and shut down. The unit will Auto Reset after it cools down to a safe operating temperature.

Settings

Shows and sets the device information, web-server password, network address.
Device identification
Shows and sets the device local information, Device name, Location, Contact.

Security
Sets name and password for web-server security (default User name: admin, default Password: admin)

Network
Sets the Ethernet IP mode. AutoIP/DHCP (default). Static (IP address and netmask must be set).

Full range setup

Using the System

External subwoofer setup

Set ESR2800D Amplifier to FULL RANGE OFF mode. Signal is crossed over at Hi/Mid for ESR212 cabinets and SUB for external subwoofer. SUB SET UP LEVEL setting depends on which subwoofer unit is used.

Block Diagram

ESR2800D Block Diagram
Channel A, channel B is identical

Warranty

Warranty
Your ESR2800D is covered against defects in material and workmanship.\ Please refer to your supplier for more details.

Service
In the unlikely event that your ESR2800D develops a problem, it must be returned to an authorized distributor, service centre or shipped directly to our factory. Because of the complexity of the design and the risk of electrical shock, all repairs must be attempted only by qualified technical personnel. If the unit needs to be shipped back to the factory, it must be sent in its original carton. If improperly packed, the unit may be damaged. To obtain service, contact your nearest KV2 Audio Service Centre, Distributor or Dealer.

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