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Related Manuals for L-Acoustics K2/SB28
Summary of Contents for L-Acoustics K2/SB28
- Page 1 K2/SB28 user manual (EN)
- Page 2 Document reference: K2/SB28 user manual (EN) version 4.0 Distribution date: April 4, 2016 © 2016 L-Acoustics. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means without the express written consent of the...
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Page 3: Table Of Contents
Contents Safety................................4 Instructions..............................4 Symbols..............................4 Welcome................................5 System components.............................6 Technical description............................7 K2 horizontal directivity settings......................... 7 K1-SB applications............................ 8 Loudspeaker configurations..........................9 Line source............................... 9 Additional subwoofer system........................11 K1-SB............................11 SB28............................15 Loudspeaker connection............................ 17 Connectors............................. 17 Connection to LA4X..........................18 Connection to LA8.......................... -
Page 4: Safety
Inspect the product before operation. If any sign of defect or damage is detected, immediately withdraw the product from use for maintenance. Never incorporate equipment or accessories not approved by L-Acoustics. Read all the related PRODUCT INFORMATION documents shipped with the products before exploiting the system. -
Page 5: Welcome
This document contains essential information on using the system properly. Carefully read this document in order to become familiar with the system. As part of a continuous evolution of techniques and standards, L-Acoustics reserves the right to change the specifications of its products and the content of its document without prior notice. Please check www.l-acoustics.com... -
Page 6: System Components
Software applications Soundvision 3D acoustical and mechanical modeling software LA Network software for remote control and monitoring of amplified controllers Manager Refer to the LA Network Manager video tutorial. Refer to the Soundvision help. K2/SB28 user manual (EN) version 4.0... -
Page 7: Technical Description
110° / 70° symmetric or 90° asymmetric (35°/55° or 55°/35°). A specific K2 preset must be used for each directivity setting. Within a line source, different directivity settings can be combined to improve the coverage of the audience geometry. K2/SB28 user manual (EN) version 4.0... -
Page 8: K1-Sb Applications
— As a subwoofer for increased impact, using the [K1SB_60] preset Both applications of K1-SB can be combined in the same configuration. K1-SB as an LF extension in a line source K1-SB as a subwoofer ENHANCED THROW INCREASED IMPACT K2/SB28 user manual (EN) version 4.0... -
Page 9: Loudspeaker Configurations
The K1-SB enclosures are driven by the LA8 amplified controller. Standalone K2 line source [PRESET] [K2 70] / [K2 90] / [K2 110] Enclosure K2 Preset [K2 70] [K2 90] [K2 110] Frequency range (-10 dB) 35 Hz - 20 kHz K2/SB28 user manual (EN) version 4.0... - Page 10 Recommended ratio 3 K2 : 1 K1-SB Minimum line length 12 K2 + 4 K1-SB When using [K2] with [K1SB_X K2], do not add any delay value between the K2 and K1-SB elements of a same line source. K2/SB28 user manual (EN) version 4.0...
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Page 11: Additional Subwoofer System
— K1-SB on top of the K2 line source — K1-SB beside the K2 or K2/K1-SB line source : side LF rejection (polarized) — K1-SB behind the K2 or K2/K1-SB line source : rear LF rejection (cardioid) K2/SB28 user manual (EN) version 4.0... - Page 12 Maximum number line length 12 K2 + 4 K1-SB Delay values Do not forget to add the pre-alignment and geometric delays depending on the configuration. Pre-alignment delays [K2] + [K1SB_60] K2 = 6 ms K1-SB = 0 ms K2/SB28 user manual (EN) version 4.0...
- Page 13 When using [K2] with [K1SB_X K2], do not add any delay value between the K2 and K1-SB elements of a same line source. Pre-alignment delays [K2] + [K1SB_60] K2 = 6 ms K1-SB = 0 ms K2/SB28 user manual (EN) version 4.0...
- Page 14 Pre-alignment delays [K2] + [K1SB_60] K2 = 6 ms K1-SB = 0 ms Geometric delays 1.5 m (5 ft) Line source = 4.5 ms 2 m (7 ft) Line source = 6 ms K2/SB28 user manual (EN) version 4.0...
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Page 15: Sb28
Use [xxxx_xx_C] on a reversed subwoofer in a cardioid configuration The cardioid configuration consists in reversing 1 element in an array of 4 subwoofers. Refer to the subwoofer user manual and to the Cardioid configurations technical bulletin. K2/SB28 user manual (EN) version 4.0... - Page 16 [K2] + [K1SB_60] + K2 = 8 ms K1-SB = 2 ms SB28 = 0 ms [SB28_60] [K2] + [K1SB_60] + K2 = 13.5 ms K1-SB = 7.5 ms SB28 = 0 ms [SB28_60_C] K2/SB28 user manual (EN) version 4.0...
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Page 17: Loudspeaker Connection
Loudspeaker connection Loudspeaker connection Connectors The K2 is equipped with two 8-point PA-COM connectors. LINK Internal pinout for L-ACOUSTICS 3-way active enclosures PA-COM points Transducer connectors left LF right LF The K1-SB is equipped with one 4-point speakON connector. K1-SB The SB28 is equipped with one 4-point speakON connector. -
Page 18: Connection To La4X
Connecting 3-way active enclosures 3-way active enclosure on speakON output - custom speakON to PA-COM interface L-Acoustics does not supply the speakON-to-PA-COM interface. It must be built with two 4-point speakON connectors and a female 8-point PA-COM connector (no cable clamp). -
Page 19: Connection To La8
Connecting subwoofers Cardioid configuration Connect the reversed subwoofer(s) to OUT 1 to use the cardioid preset. Subwoofer on speakON output - SP + SP-Y1 CH1 (OUT1) SP-Y1 CC4FP OUT3/OUT4 OUT1/OUT2 CH2 (OUT2) same as OUT1/OUT2 K2/SB28 user manual (EN) version 4.0... - Page 20 Loudspeaker connection Subwoofer on CA-COM output - DO + DOSUB-LA8 SP1 (OUT1) CA-COM SP2 (OUT2) SP3 (OUT3) SP4 (OUT4) K2/SB28 user manual (EN) version 4.0...
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Page 21: Preset Description
OUT 4 [K2 70] [K2 90] [K2 110] loudspeaker elements outputs channels routing gain delay polarity mute left LF OUT 1 IN A 0 dB 0 ms right LF OUT 2 OUT 3 OUT 4 K2/SB28 user manual (EN) version 4.0... -
Page 22: Recommendation For Speaker Cables
4 Ω load 2.7 Ω load For your installation projects, you can use the more detailed L-ACOUSTICS calculation tool to evaluate cable length and gauge based on the type and number of enclosures connected. The calculation tool is available on our website: http://www.l-acoustics.com/installation-outils-de-calcul-1367.html... -
Page 23: Illustrations
8-point PA-COM loudspeaker cable (0.7 m / 2.3 ft) DO10 8-point PA-COM loudspeaker cable (10 m / 32.8 ft) DO25 8-point PA-COM loudspeaker cable (25 m / 82 ft) DOSUB-LA8 breakout cable for four passive enclosures SP-Y1 breakout cable for two passive enclosures K2/SB28 user manual (EN) version 4.0... -
Page 24: Specifications
Finish dark grey brown Pantone 426C pure white RAL 9010 IP45 Peak level at 1 m under free field conditions using 10 dB crest factor pink noise with specified preset. K2/SB28 user manual (EN) version 4.0... -
Page 25: K2 Dimensions
Specifications K2 dimensions 400 mm / 15.8 in 1338 mm / 52.7 in K2/SB28 user manual (EN) version 4.0... -
Page 26: K1-Sb Specifications
Peak level measured at 1 m under half space conditions using 10 dB crest factor pink noise with specified preset. K1-SB dimensions 520 mm / 20.5 in 505 mm / 19.9 in 1342 mm / 52.8 in K2/SB28 user manual (EN) version 4.0... -
Page 27: Sb28 Specifications
Rigging components aluminium Peak level measured at 1 m under half space conditions using 10 dB crest factor pink noise with specified preset. SB28 dimensions 700 mm / 27.6 in 1300 mm / 51.2 in K2/SB28 user manual (EN) version 4.0...