L-Acoustics K1-SB Page 27 User Manual Download

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Specications

KS28 specications

Description

yable subwoofer 2 × 18", amplied by LA12X

Low frequency limit (-10 dB)

25 Hz ([KS28_100])

Maximum SPL

143 dB ([KS28_100])

Directivity

standard or cardioid

Transducers

2 x 18" neodymium, aluminium die cast basket

Acoustical load

bass-reex, L-Vents

Nominal impedance

4 Ω

Connectors

4-point speakON

Rigging and handling

ush-tting 2-point rigging system
6 ergonomic handles
2 ground runners
8 side runners

Weight (net)

79 kg / 174 lb

Cabinet

rst grade Baltic beech and birch plywood

Front

steel grill with anti-corrosion coating
acoustically neutral 3D fabric

Rigging components

high grade steel

Finish

dark grey brown Pantone 426C

Peak level at 1 m under half space conditions using pink noise with crest factor 4 (preset specied in brackets).

K2/KS28 user manual (EN) version 3.0

Summary of Contents for K1-SB

Page 1: ...K2 KS28 user manual EN ...

Page 2: ... manual EN version 3 0 Distribution date March 7 2017 2017 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 publisher ...

Page 3: ... Loudspeaker con gurations 10 Line source 10 Additional subwoofer system 12 K1 SB 12 KS28 16 Loudspeaker connection 18 Connectors 18 Connection to LA4X 19 Connection to LA12X 19 Preset description 21 Recommendation for speaker cables 22 Speci cations 23 K2 speci cations 23 K2 dimensions 24 K1 SB speci cations 25 K1 SB dimensions 26 KS28 speci cations 27 KS28 dimensions 28 3 ...

Page 4: ... use Read the RIGGING MANUAL before installing the system Use the rigging accessories described in the rigging manual and follow the associated procedures Read the maintenance section of this document before servicing the product Do not expose the product to extreme conditions Do not expose the product to rain or sea spray Do not expose the product to moisture mist steam humidity condensation or e...

Page 5: ...back panels combined to die cast aluminum side panels to ensure maximum acoustical and mechanical integrity while reducing weight to the minimum A four point rigging system is integrated into the cabinet The K2 enclosure operates over the nominal frequency range of 35 Hz to 20 kHz Its LF contour can be reinforced with the dedicated K1 SB extension and its bandwidth can be extended down to 25 Hz wi...

Page 6: ...ith a CC4FP adapter 4 point speakON to 2 2 point speakON DO 8 point PA COM loudspeaker cables 4 mm gauge DO cables come in three sizes DO 7 0 7 m 2 3 ft DO10 10 m 32 8 ft and DO25 25 m 82 ft DOSUB LA8 breakout cable for four passive enclosures 4 mm gauge 8 point PA COM to 4 2 point speakON Information about the connection of the enclosures to the LA ampli ers is given in this document Refer to the...

Page 7: ...System components Loudspeaker cables 0 7 m 5 m 10 m 25 m CH 1 CH 2 1 m SP 7 SP5 SP10 SP25 SP Y1 0 7 m 10 m 25 m SPK1 SPK2 SPK3 SPK4 5 m DO 7 DO10 DO25 DOSUB LA8 7 K2 KS28 user manual EN version 3 0 ...

Page 8: ...ng the adjustable ns horizontal directivity can be adjusted with four different settings 110 70 symmetric or 90 asymmetric 35 55 or 55 35 A speci c 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 KS28 user manual EN version 3 0 8 ...

Page 9: ...g the K1SB_X K2 preset with K2 As a subwoofer for increased impact using the K1SB_60 preset Both applications of K1 SB can be combined in the same con guration K1 SB as an LF extension in a line source K1 SB as a subwoofer K2 LINE SOURCE K2 K1 SB LINE SOURCE K2 LINE SOURCE K2 K1 SB LINE SOURCE ENHANCED THROW INCREASED IMPACT 9 K2 KS28 user manual EN version 3 0 ...

Page 10: ...cations Each preset is dedicated to a horizontal directivity setting By providing the K1 SB with the same frequency response as the K2 low section the K1SB_X K2 preset allows the K1 SB enclosure to be used as an LF line source element increasing the length of the sub low line source The K2 enclosures are driven by the LA4X LA12X ampli ed controllers The K1 SB enclosures are driven by the LA12X amp...

Page 11: ...ure K2 K1 SB Preset K2 70 K2 90 K2 110 K1SB_X K2 Frequency range 10 dB 35 Hz 20 kHz 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 11 K2 KS28 user manual EN version 3 0 ...

Page 12: ... The K1SB_60 and KS28_60 presets provide the subwoofers with an upper frequency limit at 60 Hz for an optimal frequency coupling with the line source The K1 SB and KS28 subwoofer enclosures are driven by the ampli ed controller K1 SB The K1 SB provides an extension of the bandwidth in the low end down to 30 Hz Depending on the deployment LF rejection can be produced Three deployments are available...

Page 13: ... 70 K2 90 K2 110 K1SB_60 Frequency range 10 dB 30 Hz 20 kHz Recommended ratio 3 K2 2 subwoofers 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 con guration Pre alignment delays K2 K1SB_60 K2 6 ms K1 SB 0 ms 13 K2 KS28 user manual EN version 3 0 ...

Page 14: ...range 10 dB 30 Hz 20 kHz Recommended ratio 3 K2 2 subwoofers Recommended spacing between side panels Between 0 5 m 1 5 ft and 1 m 3 ft Delay values Do not forget to add the pre alignment and geometric delays depending on the con guration 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...

Page 15: ... ratio 3 K2 2 subwoofers Recommended spacing between front faces Between 1 5 m 5 ft and 2 m 7 ft Delay values Do not forget to add the pre alignment and geometric delays depending on the con guration 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 Geometric delays 1 5 m 5 ft Line sour...

Page 16: ... K2 2 subwoofers Grouping subwoofers Place the subwoofer enclosures side by side If not possible the maximum distance between two adjacent acoustic centers must be 2 8 m or 1 7 m if the upper frequency limit of the subwoofer system is at 60 Hz or 100 Hz respectively Use xxxx_xx_C on a reversed subwoofer in a cardioid con guration The cardioid con guration consists in reversing 1 element in an arra...

Page 17: ...en 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 KS28_60 K2 0 ms KS28 6 ms K2 KS28_60_C K2 0 ms KS28 0 5 ms K2 K1SB_60 KS28_60 K2 8 ms K1 SB 2 ms KS28 0 ms K2 K1SB_60 KS28_60_C K2 13 5 ms K1 SB 7 5 ms KS28 0 ms 17 K2 KS28 user manual EN version 3 0 ...

Page 18: ...eakON connector K1 SB IN KS28 is equipped with one 4 point speakON connector KS28 IN 1k IN k 1 IN Znom 4 Ω Read manual and safety instructions before use Made in France European Community SAFE USE 16 KS28 FOROTHERCONFIGURATIONS CHECKMECHANICAL SAFETYWITHSOUNDVISIONSOFTWARE USEONLYWITHL ACOUSTICSAMPLIFIEDCONTROLLERS KS28 Weight 79 kg 174 lb Internal pinout for L Acoustics subwoofers speakON points ...

Page 19: ... PA COM interface It must be built with two 4 point speakON connectors and a female 8 point PA COM connector no cable clamp OUT1 OUT2 OUT3 OUT4 speakON to PA COM Connection to LA12X Maximum number of enclosures per LA12X enclosure max enclosures in parallel max enclosures per controller K2 3 3 K1 SB 1 4 KS28 1 4 For passive loudspeakers the value corresponds to the number of enclosures in parallel...

Page 20: ...tput CA COM DO DO Connecting subwoofers SP and SP Y1 on speakON output OUT1 OUT2 OUT3 OUT4 same as OUT1 OUT2 SP SP Y1 CC4FP CH 1 OUT1 CH 2 OUT2 DO and DOSUB LA8 on CA COM output CA COM DO DOSUB LA8 SPK1 OUT1 SPK2 OUT2 SPK3 OUT3 SPK4 OUT4 K2 KS28 user manual EN version 3 0 20 ...

Page 21: ... IN A 0 dB 0 ms ON K1SB_60 K1SB_X K2 KS28_60 outputs channels routing gain delay polarity mute OUT 1 SB IN A 0 dB 0 ms ON OUT 2 SB IN A 0 dB 0 ms ON OUT 3 SB IN A 0 dB 0 ms ON OUT 4 SB IN A 0 dB 0 ms ON KS28_60_C loudspeaker elements outputs channels routing gain delay polarity mute SR OUT 1 SR ON SB OUT 2 SB ON SB OUT 3 SB ON SB OUT 4 SB IN A 0 dB 0 ms ON 21 K2 KS28 user manual EN version 3 0 ...

Page 22: ...ximum length for loudspeaker cables depending on the cable gauge and on the impedance load connected to the ampli er recommended maximum length cable gauge 8 Ω load 4 Ω load 2 7 Ω load mm 2 SWG AWG m ft m ft m ft 2 5 15 13 30 100 15 50 10 33 4 13 11 50 160 25 80 17 53 6 11 9 74 240 37 120 25 80 For your installation projects you can use the more detailed L ACOUSTICS calculation tool to evaluate ca...

Page 23: ... L Vents MF bass re ex HF DOSC waveguides Nominal impedance LF 2 x 8 Ω MF 8 Ω HF 16 Ω Connectors IN 1 x 8 point PA COM LINK 1 x 8 point PA COM Rigging and handling captive 4 point rigging system inter enclosure angles 0 25 1 2 3 4 5 7 5 or 10 Weight net 56 kg 123 2 lb Cabinet rst grade Baltic birch plywood Front steel grill with anti corrosion coating acoustically neutral 3D fabric Rigging compone...

Page 24: ...Speci cations K2 dimensions 400 mm 15 8 in 1338 mm 52 7 in 286 mm 11 3 in 354 mm 13 9 in K2 KS28 user manual EN version 3 0 24 ...

Page 25: ...ing and handling captive 4 point rigging system inter enclosure angles 0 0 5 1 1 5 2 2 5 3 4 or 5 handles integrated into the cabinet Weight net 83 kg 183 lb Cabinet rst grade Baltic birch plywood Front steel grill with anti corrosion coating acoustically neutral 3D fabric Rigging components high grade steel with anti corrosion coating Finish dark grey brown Pantone 426C IP IP55 1 Peak level at 1 ...

Page 26: ...Speci cations K1 SB dimensions 505 mm 19 9 in 1342 mm 52 8 in 520 mm 20 5 in 438 mm 17 1 in K2 KS28 user manual EN version 3 0 26 ...

Page 27: ...nnectors 4 point speakON Rigging and handling ush tting 2 point rigging system 6 ergonomic handles 2 ground runners 8 side runners Weight net 79 kg 174 lb Cabinet rst grade Baltic beech and birch plywood Front steel grill with anti corrosion coating acoustically neutral 3D fabric Rigging components high grade steel Finish dark grey brown Pantone 426C 1 Peak level at 1 m under half space conditions...

Page 28: ...Speci cations KS28 dimensions 1340 mm 52 8 in 1351 mm 53 2 in 719 mm 28 3 in 550 mm 21 7 in 565 mm 22 2 in 702 mm 27 6 in K2 KS28 user manual EN version 3 0 28 ...

Page 29: ...om www l acoustics com L Acoustics GmbH Steiermärker Str 3 5 70469 Stuttgart Germany 49 7 11 89660 323 L Acoustics Ltd PO Box Adler Shine Aston House Cornwall Avenue London N3 1LF United Kingdom 44 7224 11 234 L Acoustics Inc 2645 Townsgate Road Suite 600 Westlake Village CA 91361 USA 1 805 604 0577 www l group com ...

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