KA24 - KA84 USER GUIDE English PRELIMINARY
KA24/KA84 2 PRELIMINARY
KA24/KA84 TABLE OF CONTENTS SYMBOLS 1. INTRODUCTION 2. KEY FEATURES 3. APPLICATIONS 4. SAFETY INFORMATION 5. UNPACKING 6. INCLUDED ACCESSORIES 7. PHYSICAL 8. INSTALLATION 9. AC POWER 10. FRONT PANEL 11. BACK PANEL 11.1 POWER SUPPLY 11.2 AUDIO CONNECTIONS 11.3 REMOTE CONTROL 12. TOUCH SCREEN FUNCTIONS HOME PAGE LEVELS MATRIX DELAY CONFIGURATION PRESET INFO 13. REMOTE CONTROL SOFTWARE 14. KA-POT1 ACCESSORY 14.1 CHANNEL LEVELS ASSIGNMENT 14.2 ASSEMBLING AND WIRING 15. SERVICE 16.
KA24/KA84 4 PRELIMINARY
KA24/KA84 SYMBOLS K-array declares that this device is in compliance with applicable CE standards and regulations. Before putting the device into operation, please observe the respective country-specific regulations! WEEE Please dispose of this product at the end of its operational lifetime by bringing it to your local collection point or recycling center for such equipment. This symbol alerts the user to the presence of recommendations about the product’s use and maintenance.
KA24/KA84 1. INTRODUCTION The K-array KA line of power amplifiers are comprised of KA24 and KA84. The KA24 has 4 channels per 500W on 4Ω and the KA84 has 4 channels per 2000W on 4Ω. Each model has 4 fully independent and configurable channels. The integrated DSP offers EQ, Matrix, Levels, Delays and Limiter functions on every channel, to avoid the need of external additional processors.
KA24/KA84 4. SAFETY INFORMATION Read these instructions - Keep these instructions - Heed all warnings Warning. Failure to follow these safety instructions could result in fire, shock or other injury or damage to the device or other property. This symbol alerts the user to the presence of recommendations about the product’s use and maintenance.
KA24/KA84 WARNING • Since the device is a CLASS I apparatus, it must be only connected to an AC three-wire grounding outlet. If your outlet isn’t grounded, contact a licensed electrician to replace it with a property grounded outlet. • 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. Do not use the product if the power cord is broken or frayed.
KA24/KA84 7. PHYSICAL 480 mm (18.9") 304.8 mm (12.0") 9 304.8 mm (12.0") 294.8mm (11.6") 94.9 mm (3.7") 430 mm (16.9") Weight KA24: 5.5 Kg (12.12 lb) KA84: 6.1 Kg (13.
KA24/KA84 8. INSTALLATION KA24 and KA84 are two rack units high (2U) and can be mounted in an EIA-standard 19’’ rack using two rack adapters (included). In case of istallation on a flat surface, use the four rubber pads included. To maintain a low and even operating temperature, the amplifier contains two fans on the right side. The figure below shows the air flow: WARNING For effective cooling, do not obstruct the ventilation openings.
KA24/KA84 9. AC POWER KA24 and KA84 operate safely and without audio discontinuity if the AC voltage stays within an operating range of 90 V to 264 V (nominal range: 100-240 V) at 50 or 60 Hz. Please verify that your AC main connections are capable of satisfying the power rating for the device. CAUTION. Do not connect the system to AC power mains exceeding 265 V. Doing so will cause significant damage to the device and create serious risk for users! 10. FRONT PANEL 1 2 1. TOUCH SCREEN Control panel.
KA24/KA84 11.1 POWER SUPPLY 3 4 5 CH 5 - 6 3. AC INPUT. PowerCon for AC power. 4. AC LINK. PowerCon ouput for feeding AC mains power to additional K-array components with a powercon AC input socket. 5. POWER ON LED. Indicates the amplifier is ON. 6. CH 1 MIC/LINE INPUT. XLR analog input, with 11.2 AUDIO CONNECTIONS selectable sensitivity for Mic (-30 dBu) or Line (+4 dBu). CH 5 - 6 7. CH 2 MIC/LINE INPUT. XLR analog input, with selectable sensitivity for Mic (-30 dBu) or Line (+4 dBu). 8.
KA24/KA84 19. CH 4 LINK OUT/DSP OUT SWITCH. Press the switch to use output 18 as an auxiliary XLR balanced output controlled via the K-Framework software. 20. CH 5/6 AES/EBU INPUT. XLR input connector for two-channel AES/EBU digital audio, accepting sample rates from 32 kHz – 96 kHz. 21. CH 5/6 AES/EBU OUTPUT. XLR output, providing two-channel digital audio from ch 5/6 AES/EBU input, at a sample rate of 48 kHz. 22. POWER OUT A. Speakon output to drive passive speakers.
KA24/KA84 USB connection from a PC CH 5 - 6 RS485 XLR LINK CH 5 - 6 RS485 XLR LINK CH 5 - 6 Next device in the K-framework network RS485 network 14 PRELIMINARY
KA24/KA84 12. TOUCH SCREEN FUNCTIONS The main functions of the onboard DSP can be managed with the integrated touch screen. Functions are grouped into six pages, shown as icons on the Home page. HOME PAGE To reach the Home page from any other page, touch the Home button. LEVELS The Levels page allows users to independently manage the amplitude of all the four input channels and all the four output channels.
KA24/KA84 DELAY The Delay page allows users to independently set the delays for the four output channels (up to 3.5 mt) and for Channel 3 and Channel 4 input channels (up to 114 mt). Pressing on a delay value, users can set the delay in ms or in mt. Press the OK button to return to the Delay page. CONFIGURATION Before connecting the speakers to the amplifier, follow the instructions below. Warning.
KA24/KA84 PRESET The Preset page allows users to load presets stored on-board. INFO The Info page contains information about the current software and firmware, and the Board ID of the amplifier. The Board ID is automatically assigned to the amplifier unit when connected to a K-Framework network. 13. REMOTE CONTROL SOFTWARE All amplifier functions, including signal routing, output configuration, channel equalization and delay can be controlled via K-Framework software.
KA24/KA84 14. KA-POT1 ACCESSORY KA-POT1 allows users to control input channels and output channels levels with a potentiometer installed in a standard box for switches. It is possible to connect up to two independent KA-POT1 to each amplifier in order to control two independent levels. 14.1 CHANNEL LEVELS ASSIGNMENT To assign each KA-POT1 an amplifier parameter, connect a computer running the K-framemork software and follow the instruction you find in the K-framework manual.
KA24/KA84 14.2 ASSEMBLING AND WIRING The KA-POT1 pack is composed of: PCB with potentiometer 2 x screws M3X6 2 x 4-pin connector plugs Ø4 Ø7 Ø4 Drilling jig KA-POT1 UNPACKING Position the drilling jig on an appropriate box and make the three holes. Install your cap in a box for switches and insert the PCB with the potentiometer coming out from the center hole. Secure with the two included screws. Cover the potentiometer with the gray knob.
KA24/KA84 Follow the wiring scheme below to connect the 4-pin connector plugs. Follow the scheme on the top if you own only one KA-POT1 and the one on the bottom if you own two KA-POT1. Then insert one plug in the PCB and the other into the GPIO port on the amplifier.
KA24/KA84 15. SERVICE To obtain service: 1) Contact the official K-array distributor in your country. Your local distributor will direct you to the appropriate service center. 2) If you are calling for service, please have the serial number(s) of the unit(s) available for reference. Ask for Customer Service, and be prepared to describe the problem clearly and completely. 3) If the problem cannot be resolved over the phone, you may be required to send the unit in for service.
KA24/KA84 16. SPECIFICATIONS KA24 KA84 Power Output Max Power @ 4Ω 4 x 600 W Max Power @ 8Ω 4 x 300 W(1) 4 x 1000 W(1) 2 x 1200 W(1) 2 x 4000 W(1) Max Power bridged @ 8Ω 4 x 2000 W(1) (1) 4 Ω (single channel mode) 8 Ω (bridge mode) Minimum impedance Audio specs 50V/μS (input filter bypassed) Slew rate 8 Ω Distortion (THD + N) < 0.09% 1W to full power @ 4Ω (typically <0.
KA24/KA84 The contents of this manual are furnished for informational purposes only. K-array s.u.r.l. assumes no responsibility for any errors or inaccuracies that may appear in this manual. K-array s.u.r.l. reserves the right to make modifications without prior notice.
K-array s.u.r.l. Via Paolina Romagnoli - 50037 San Piero a Sieve (Firenze) - Italy tel. +39 055 8487222 - fax. +39 0558487238 e-mail: info@k-array.com www.k-array.
