Laney
Concept Loudspeakers
Applications
Concept
Laney
Concept Loudspeakers
Applications
1Cover
2 Contents
3 Introduction + Impedance
4 Hints + Safety
5VocalPA
6 Music + Vocal Pa
7 Full Range Sound Reinforcement
8 Full Range Sound Reinforcement
9 Specifications and Range Information
Concept
Laney
Concept Application Notes
Myths and Reality of Sound Systems
Introduction
Within this application note you will 4 sound systems which fullfill most of all typical system requirements.
The systems which are covered :-
1) Vocal PA
2) Full Range + Vocal PA
3) Full Range Sound Reinforcement
4) Full Range Sound Reinforcement
Before these systems are discussed its worth discussing myths and realities of sound systems.
Speaker Impedance - Do I buy 4 ohm or 8 ohm Enclosures ?
At some point while shopping around to buy your sound system you will be told you need 4 ohm cabinets
because its claimed they are louder .This may be due to what your supplier has in stock or its what a
particular manufacturer recommends - but what is actually true ?
Youcouldlookforamathematicalansweritwillsaychangeyour8ohmloudspeakertoa4ohmloudspeaker
you’ll get double the power. in practice most of amplifiers have conventional power supplies ,when
youdrivean ampwhichwilldo70W@8ohmsitwilldo100W@4ohmsnotdouble the power after all.
Even so I hear you cry that’s still a whole 30W more output from my loudspeaker. Lets have a look at a few
figures
Sound intensity is a logarithmic law so in fact to get twice as loud as your 70W you will need about a 700W
amplifier-bygoingtoa4ohmcabinetanddissipating an extra 30W in the driver you won’t get 30% more
sound level you’ll probably only end up with 10-15% if you are lucky.
What you will do though is increase the working temperature of the voice coil so any fractional increase in
output level you did get would be taken away due to thermal compression which could be as much as a 25%
reduction in sound level..
So by using an 8 ohm enclosure the following happens :
1)Reliability Improved - the working temperature of the Loudspeakers voice coil is decreased
2)Reduced thermal compression - 50% less than in a similar 4 ohm unit
3)A Flexible sound System - you can parallel 2 loudspeakers together
4)If you run your amps at 8 ohms they run cooler - good for long term reliability.
False
So any marginal increase output level achieved by going to 4 ohm cabinets will instantly be taken away from
you in thermal compression and reliability.
Concept
Data
Laney
Concept Application Notes
Concept Specification
Model Power Rating
(W)
Cabinets
CT10 80 100 20K 97 8 120 470*310*330
CT12 100 85 18K 98 8 200 545*384*397
CT15 150 65 18K 98 8 220 637*444*463
CT815 250 65 18K 98 8 350 715*444*463
Powered Cabinets
CPC10 65 100 20K 99 8 470*310*330
CPC12 120 85 - 18K 98 8 545*384*397
CPC15 150 65 - 18K 98 8 637*444*463
Low Frequency
Enclosures
CS115 200 60 800 98 8 300 635*463*440
CS215 700 45 - 450 102 4 650 870*620*440
CS118 350 45 - 450 102 8 300 870*620*440
CCX Cabinets
CTX10 200 90 20K 97 8 470*310*330
CTX12 350 65 17K 98 8 630 597*384*397
CTX15 350 60 17K 102 8 630 685*444*463
*Recommended power amps rating into 4 ohms
CT Range
The CT full range loudspeakers all feature custom bass drivers in reflex enclosures , two ¼ inch Jack
connectors and piezo high frequency drivers which are extremely reliable .
The CT satisfies most sound system requirements where cost effective sound systems are required
Frequency
Response
Sensitivity
dB/W @
1m
Impedance
Available
Recommended
Power
amplifier*
Dimensions
H*W*D
CPC Range
The CPC Range consists of 3 loudspeakers which are powered versions of the CT10 ,CT12 and CT15.
CTX Range
The CTX full range loudspeakers feature high power custom drivers in reflex enclosures .The CTX12 and
CTX15use1inchcompressiondriversonahornwitha90*40dispersionpattern.
The CTX range is designed where high quality high sound levels are required , eg band , club and bars.
CS Range
The CS Bass Loudspeaker features high power custom drivers in reflex enclosures.
The CS range is designed to complement the CT , CPC and CTX enclosures where extended low frequency
response is required, such as with dance music and accurate reproduction of drums.
Concept
Data
Laney
Concept Application Notes
Myths and Reality of Sound Systems
How much Power do you really need ?
Application Hints
1.) Reduce any subsonic signals to your loudspeakers it will increase the life of you drivers by reducing the driver
power dissipation and cone excursion but also improve low frequency definition. You can achieve this by
switching in any sub-sonic filters that operate at 30Hz and below or reducing these frequencies on a graphic
equaliser.
2.)Avoid feedback - when feedback occurs it builds up until it is at the maximum output level the sound system is
able to produce - even if it involves the sound system clipping. This is potentially damaging to any loudspeaker
and thus should be avoided.
i)make sure sound from the speakers , cannot be picked up by microphones .
(speakers are best in front and facing away of the band).
ii)Only keep microphones open which are needed
iii)Try to cut rather than boost when using any Eq.
iv)If feedback does occur use the graphic Eq or feedback eliminator to stop it.
v)Turntables are particularly prone to low frequency feedback is wise to isolate them mechanically from
any low frequency vibration.
3.) In venues which have a particularly lively/reverberant sound. It is best to use a distributed loudspeaker
system as this will improve intelligibility/definition trying to compensate with more volume will just excite the
reveberant space even more.
Safety Information
1.) High sound pressure levels from loudspeakers can cause permanent and temporary hearing damage. Take
care when setting maximum sound levels.
2.)The CT and CTX enclosures are designed for stand/pole mounting via the top hat, in the base of the
loudspeaker. The top hat is designed to suit a 35mm pole.
The loudspeakers do not incorporate any facilities for flying or hanging. Do not use the handles for this purpose.
3.)Care should still be taken when lifting, otherwise back injuries may result.
If you can, get some one to help you when lifting the loudspeaker or remember to when you pick
up and put down the cabinet.
4.) When you position your loudspeakers remember to position them to minimize the risk of people falling over
them (particularly the stands).Also remember to secure the loudspeaker cable to minimise any risk of tripping
people.
bend your knees
Concept
Data
Laney
Concept Application Notes
Vocal P.A.
CPC10 + CT10
Description
This is a medium level music PA.It is built around a
CPC10 active enclosure and a CT10 enclosure.
This system is the ideal solution where a vocal PA is
required where it needs to be simple to operate and
lightweight.
Vocal PA’s do not need the large power amplifiers
associated with high level music systems so if you do
not really need to club/band sound levels this system
will meet your requirements.
The CPC10 is a version of CT10 with a 65W power
amplifier and mixer built in.
The CPC10 has 2 input channels
1)Phono/Jack input - for CD/tape/Keyboard type
inputs
2)Mic/line input - for microphones or
Keyboard type inputs.
CD/ tape/
Application
Typical User :
Output Power:
Equipment
Required:
Power Requirement:
General Purpose Vocal PA
:
Medium Level Music
Schools - fixed install or
general mobile use
Places of Worship
Small Aerobic / Fitness suites
65W r.m.s.
93W Peak
1offLANEYCPC10
1offLANEYCT10
2 off Speaker Stands
1 off Jack to Jack Speaker
cable
1 off Microphone
1 off Microphone cable
1off CD/tape/minidisc as
required
130W
0.56A
Concept
Data
Laney
Concept Application Notes
Full Range + Vocal P.A.
CPC10 + CPC10
CS115 + CS115
Description
This is a vocal / medium level music PA with bass
extension which belies its low power rating
The additional bass extension provided by the CS115
enclosure allows the system to provide high level
reinforcement of pre-recorded/live material in small
venues . This systems performance really needs to be
auditioned to realise the full benefits of the additional
low frequencies. These low octaves are where much of
the emotion and feeling exist within music. This makes
the system ideal for DJ’s / vocal + keyboard
reinforcement for bands.
The CS115 enclosures are connected to the `extension
speaker socket’ on the CPC10.
The previous two systems can easily be changed to
use a CPC12 (120W) or CPC15(150W) should you
need louder systems which may be typical band/ DJ ‘s.
Concept
Application
Typical User :
Output Power:
Equipment Required:
Power Requirement:
Data
General Purpose Vocal PA
:
Medium Level Music
Bands - Vocal / Keyboard PA
Mobile discos <200
Schools - fixed install or
general mobile use
Aerobic / Fitness suites
Places of Worship
130W r.m.s.
186W Peak
2offLANEYCPC10
2 off LANEY CS115
2 off Pole Stands
1 off Jack to Jack Speaker
cable
An external mixer may be
used to drive into the CPC10
line inputs - or the internal
mixer could be used as
described in the previous
application note
260W
1.12A
Laney
Concept Application Notes
Full Range Sound Reinforcement
CT15 + CT15
CS115 + CS115
Description
This is a system designed for primary reinforcement
system for bars , DJ’s ,bands.
The simplest operation of this system is by linking the
CT15 and CS115 socket together using the sockets on
the rear panel. Due to the extended frequency
response of the CS115 it can operated without a
crossover without sonic compromise.
If Bi-amping is being considered where a separate
amplifier would be used for CS115 and CT15
performance improvements can be made. The
crossoverorlowpassfilteringshouldbesetto
attenuate frequencies above 300Hzl. It is advised
however not to set the CT15 low frequency roll off to
300Hz otherwise you will not realise the low frequency
extension which exists in the CT15, in simple terms
there is no point rolling of the bass to 15 inch drivers
they reproduce it very well ! Experience shows that in
many instances running the CT15 full range with low
frequency roll off below 30Hz to be give best results.
You can achieve a simple low pass filter by smoothly
rolling of the frequencies above 300Hz on a graphic
equaliser .
Concept
Application
Typical User :
Recommended
Power Amplifier:
Equipment
Required:
Power Requirement :
Data
Full range Sound
:
Reinforcement
Band Sound systems
Mobile discos
Clubs / Bars
Aerobic / Fitness suites
Places of Worship
1 off stereo 120 - 630W per
channel amplifier
2offLANEYCT15
2 off LANEY CS115
2 off Pole Stands
2 off Speaker cable (long) Jack at speaker end
2 off Speaker cable (short) Jack to Jack
<2000W
<8A
Laney
Concept Application Notes
Full Range Sound Reinforcement
CTX12 + CTX12
CS215 + CS215
or
CS118 + CS118
Description
This is a system designed for primary reinforcement
system in bars , in clubs ,bands.
The move from the CT range to the CTX range sees
theuseofa1inchcompressiondriverformid/high
frequencies, this makes mid and treble frequencies
sound purer and project better. Audition this you can
hear the difference , you don’t need golden ears !
The CTX12 enclosure is an competent full range
enclosure its bass extension is fine for most
application however in large venues and/or events
requiring high sound levels the addition of a CS bass
enclosure is recommended.
The simplest operation of this system is by linking the
CTX15 and CS118 socket together using the sockets
on the rear panel. Due to the extended frequency
response of the CS118 it can operated without a
crossover without sonic compromise. The CS215 does
benefit from the use of a crossover - and it does need a
separate amplifier due to its 4 ohm impedance.
If Bi-amping is being considered , where a seperate
amplifier would be used for CTX12 and CS enclosures
performance improvements can be made.
Concept
Application
Typical User :
Recommended
Power Amplifier:
Equipment
Required:
The crossover or low pass filtering should be set to
attenuate frequencies above 250Hz. It is advised
however not to set the CTX12 low frequency roll off to
300Hz otherwise you will not realise the low frequency
extension which exists in the CTX12, in simple terms
there is no point rolling of the bass to 12 inch drivers
they reproduce it very well ! Experience shows that in
many instances running the CTX12 with low frequency
roll off below 60Hz gives best results.
:
Full range Sound
Reinforcement
Band Sound systems
Mobile discos
Clubs / Bars
Aerobic / Fitness suites
Places of Worship
2 off 120 - 630W per channel
amplifier
2offLANEYCTX12
2 off LANEY CS215 or CS118
2 off Pole Stands
4 off Speaker cable (long)
Data
You can achieve a simple low pass filter by smoothly
rolling of the frequencies above 250Hz on a graphic
equaliser .
Loading...