Our aim is to create audio products that absorb you, place you within the performance and deliver a listening experience beyond expectation. EXTERNAL SUB IN INTERNAL SUB IN 50 Ω 10 kΩ EXTERNAL SUB OUT PRE CONTROL OUT THROUGHT SIGNAL OUT At KV2 Audio our vision is to constantly develop technologies that eliminate distortion and loss of information providing a true dynamic representation of the source.
IMPORTANT SAFETY INSTRUCTIONS Before using your EPAK 2500R, be sure to carefully read the applicable items of these operating instructions and the safety suggestions 1. Keep this manual for future reference. 2. Heed all warnings. 3. Follow all instructions. 4. Do not use this unit near water. Do not spill water or other liquids into or on the unit. Do not operate the EPAK 2500R while wet or standing in liquid. 5. Clean only with dry cloth. 6. Do not block the air intake or exhaust ports.
INDEX 1. Introduction 2. Getting Started 2.1 Unpacking 2.2 Rack Mounting 2.3 Cooling 2.4 AC Requirements 3. Features 3.1 Front panel 3.2 Rear panel 4. Using the System 4.1 Normal Set Up 4.2 Using the Mid/Hi Insert 4.3 Feeding the Subwoofers from another source 5. Specifications 6. Block Diagram 7.
1 INTRODUCTION Thank you for purchasing this KV2 Audio EPAK 2500R unit. This manual contains important information on operating this unit correctly and safely. Please take some time and read this manual to familiarise yourself with the advanced features of this unit. The EPAK 2500R is a four-way, active control and ampli ation system speci cally designed for the KV2 Audio ES Series™ modular loudspeaker systems.
2 GETTING STARTED 2.1 UNPACKING Unpack the EPAK 2500R and check to see if there is any damage to it. If you 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.
2 GETTING STARTED 2.3 COOLING The EPAK 2500R 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 a er by the two fans on the rear panel, this passes over the cooling of the heat sinks and exhausts through the rear.
3 FEATURES 3.1 FRONT PANEL 1 2 3 4 5 6 11 1) AC Mains Switch The EPAK 2500R has a combination AC Mains switch/circuit breaker on the front panel. If the switch shuts during normal use, push it back to the ON position once. If it will not stay on you should take the unit to quali rvice personnel to have it serviced. 2) Unproper Use LED If the EPAK 2500R is connected improperly then this LED will light and the unit will shut down.
3 FEATURES 3.2 REAR PANEL 1 2 3 4 5 1) Main Input / Through Signal Out This is the main system input connector with associated ‘Through Signal Output’ connector for sending unprocessed signal to other devices, such as more EPAK 2500R’s to power more ES 1.0’s in a system. 2) Input Z This switch selects one of two input impedance settings for the EPAK 2500R. The switch should be set to the 50 Ω setting when the EPAK 2500R is driven from a VHD LD4 line driver.
4 USING THE SYSTEM 4.1 NORMAL SET UP The EPAK 2500R is designed to actively power one ES 1.0 cabinet and associated subwoofer systems. For Normal Mode operation signal is applied to the ‘Main Input’ connector and all the ‘Insert’ switches would be in the ‘Disengage’ position. The Input Z switch should be set to match the output impedance of the device feeding the EPAK 2500R. If you are using a VHD LD4 Line Driver then the Input Z switch on the EPAK 2500R should be set to 50Ω.
4 USING THE SYSTEM Notes on Subwoofer Combinations 1. Setting 1 is set up for driving 1 x ES1.8 + 2 x ES1.5. It can also drive 1 x ES1.8 + 1 x ES1.5, in this mode the relevant Sub level control (either Internal or External) should be increased by up to +6dB. 2. Setting 2 is set up for driving 2 x ES1.5. It can also drive 3 x ES1.5, in this mode the relevant Sub level control (either Internal or External) should be decreased by -3dB. This setting can also drive just 1 x ES1.
4 USING THE SYSTEM 4.3 FEEDING SUBWOOFERS FROM ANOTHER SOURCE Taking the following diagram as an example, if the ES 1.0 was ying you might want to one ES 2.5 above it with the other two ES 1.8’s ground stacked beneath. In this instance it would be preferable to have both sets of subwoofers fed by separate feeds from the mixing console, to give you independent level control to each of the subwoofer types, and to have the ES 1.
5 EPAK 2500R AMPLIFIER / CONTROLLER SPECIFICATIONS High Frequency Amplifier Specification Type Rated Continuous Power Distortion Operating Bandwidth Mid Frequency Amplifier Specification Type Rated Continuous Power Distortion Operating Bandwidth Mid-Bass Frequency Amplifier Specification Type Rated Continuous Power Distortion Operating Bandwidth Low Frequency Amplifier Specification Type Class AB Push-Pull low inter-modulation Mosfet design with transformer balanced output 100W <0.05% 2.
EXTERNAL INPUT INTERNAL SUB IN MID/HI INPUT MAIN INPUT MAIN AC IN 10kΩ DISENGAGE ENGAGE DISENGAGE ENGAGE DISENGAGE ENGAGE 50Ω INPUT IMPEDANCE PRE CONTROL OUTPUT THROUGH SIGNAL OUT POWER SUPPLY EXT SUB LEVEL ± 6 dB SUB LEVEL ± 6 dB SUB SET UP MASTER LEVEL ± 6 dB CONTROL PRE SIGNAL PRESENT EXTERNAL SUB OUT HI FREQ LEVEL ± 3 dB SIGNAL MANAGEMENT CONTROL UNIT PROTECTION ES1.
7 WARRANTY, SERVICE & CONTACT INFORMATION WARRANTY Your EPAK 2500R is covered against defects in material and workmanship. Refer to your supplier for more details. SERVICE In the unlikely event that your EPAK 2500R 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 quali technical personnel.
The future of sound. Made perfectly clear. At KV2 Audio our vision is to constantly develop technologies that eliminate distortion and loss of information providing a true dynamic representation of the source. Our aim is to create audio products that absorb you, place you within the performance and deliver a listening experience beyond expectation. KV2 Audio, Nádražní 936, 399 01 Milevsko, Czech Republic Tel. +44(0)1423 816868 www.kv2audio.
