Wharfedale Pro LA-15, LA-15SUB User Manual
Unpacking
All Wharfedale Pro products are fully
checked before leaving the factory. After
unpacking please inspect cabinets for any
physical damage. Please retain the shipping
carton if possible and internal packing material in case the unit needs
to be returned. Please check as soon as possible the unit is
functioning. In the event of any damage please contact your dealer
immediately so that a written claim for damages can be made.
Wharfedale Pro Limited Warranty*
Wharfedale Pro LA Series loudspeaker systems are warranted to be clear
of manufacturing or materials defects for a period of one year from the
original date of purchase. In the event of malfunction, contact your
authorised Wharfedale Professional dealer or distributor for information.
*Be aware that warranty details may differ from country to country. Contact your dealer or
distributor for information. These terms do not infringe your statutory rights.
PRO LA-15 AND LA-15SUB (PASSIVE)
Operating/Use
1. The LA Series accept cables with Speakon™ and 1/4’ jack
connectors. The units feature two jack sockets and two Speakon™
type connectors situated at the rear of each cabinet. These are
connected in parallel. You can connect LA Series cabinets in
series. Take care to avoid adding too many speaker system in
series. Each series connected speaker increases the load on the
amplifier and can add up to a total load that may exceed the
amplifier’s capabilities, leading to possible damage. Two 8Ω
loudspeakers in series make a 4Ω total load. Four 8Ω series
connected loudspeakers make a total load of 2Ω, which is too low
for many amplifiers.
2. Connect the speaker cable securely to your LA unit and power
amplifier (the amplifier should be off, power down mode). Where
possible use Speakon™ connectors as they are professional high
current connections specifically designed for this application.
Try to use the correct type of speaker cable according to the
handling ability of your LA Series Cabinet. Use 2 conductor equal
stranded insulated cable for speaker runs. It is always advisable to
use heavier conductor cables on longer runs.
3. If using Speakon™, insert the speakon and rotate 1/8 of a turn
until locked in. If using a jack plug insert until secure.
4. Power up amplifier with levels on zero. Confirm LA speakers are
operating.
LA SERIES PROFESSIONAL SPEAKER SYSTEMS
USER MANUAL
LA-15 • LA-15SUB
● Strong construction of acoustically enert, high
impact, ‘GiG’ tough ACOUSTIC RESIN™
● Proprietary designed, high efficiency, high power
Wharfedale Professional drive units.
● Protective grills
● Sophisticated crossover design enables smooth
power and frequency response control through
crossover region.
● Integral High Frequency Driver Overload protection
“PRO-TECH” TM
● High frequency horn coverage can be changed for
60 x 40 or 40 x 60 degree coverage. Simply undo
the four screws on the HF horn and rotate 90
degrees.
● Complex Trapezoid design for grouping of cabinets
in array
● Integral Easy carry handles
● Integral tripod stand adaptor
WARNING & SAFETY INSTRUCTIONS
Wharfedale Pro LA Series of Professional Sound Reinforcement Loudspeakers
1. READ INSTRUCTIONS carefully before operating this product.
2
.
RETAIN these instructions.
3. COMPLY WITH WARNINGS - All warnings and instructions for
this product should be adhered to.
4. USE WITH AMPLIFIERS - In order to avoid damage, it is
advisable to establish and follow a pattern for turning on and off
any sound system. With all system parts connected, turn on
source equipment, tape decks, instruments, mixers, signal
processors etc., BEFORE turning on your power amplifier. Many
products output turn on and turn off transients that can damage
speakers. By turning on your power amplifier LAST and making
sure the amplifier’s input controls are at minimum any transients
“upstream” of the amplifier are not amplified and passed to the
speaker. Wait until all system parts have stabilised, then bring up
amplifier controls to operating level. This should take no more
than a few seconds. Similarly when shutting systems down,
always turn down amplifier input controls and then turn off your
amplifier BEFORE shutting down other components. Professional
amplifiers often feature delayed turn on/off circuits to perform
these functions for you automatically.
5. CABLES - Never use shielded or microphone cable for any
speaker connection as this will not be heavy enough to handle the
amplifier load and could cause damage to the complete system.
6. RIGGING • SUSPENDING • MOUNTING
The rigging, suspension or mounting of this speaker system can
expose members of the public to serious health risks and even
death. UNDER NO CIRCUMSTANCES ATTEMPT TO RIG,
SUSPEND OR OTHERWISE MOUNT THIS SYSTEM UNLESS
YOU ARE FULLY QUALIFIED AND CERTIFIED TO DO SO BY
RELAVENT LOCAL, STATE AND NATIONAL AUTHORITIES.
ALL RELAVENT SAFETY REGULATIONS MUST BE
FOLLOWED. IF YOU ARE NOT PROPERLY QUALIFIED OR DO
NOT KNOW OF PERTINANT REGULATIONS, CONSULT
QUALIFIED PERSONNEL FOR ADVICE AND ASSISTANCE.
7. CAUTION: These professional loudspeaker systems are
capable of generating very high sound pressure levels. Use care
with placement and operation to avoid exposure to excessive
levels that can cause permanent hearing damage.
8. SERVICING - The user should not attempt to service this
product except that mentioned in this manual.
PRO LA-15 AND LA-15SUB (PASSIVE)
LA-15 Series full range system
AMP
Full range output from
amp to LA-15 input
Full range
signal from
audio mixer
Active
Crossover
HF
AMP
LF
AMP
LF
HF
Speakon™ Plug
Connection
Pin 1+ = + on
amp terminal
Pin 1- = - on
amp terminal
AMP
Full range output from
amp to LA-15SUB input
Full range
signal from
audio mixer
Speakon™ Plug
Connection
Pin 1+ = + on
amp terminal
Pin 1- = - on
amp terminal
Full range
signal from
audio mixer
Linked from LA-15SUB
parallel input to
LA-15 input.
system load of 4 ohms
LA-15 & LA-15SUB Series extended full range system
LA-15 & LA-15SUB Series extended full range system
with external active crossover
pre-filtered output from
active crossover to
(high) LA-15 input
pre-filtered output from
active crossover to
(low) LA-15SUB input
APPLICATION: The speaker system is a full range, high power handling,
high efficiency system designed for demanding professional applications
such as the reproduction and reinforcement of music, musical instrument,
vocal and spoken voice.
BI-AMPLIFICATION: Bi-amplification of these systems is possible after
simple modifications are performed on the internal crossover. A full
understanding of the theory and practice of bi-amplification is
recommended before attempting to operate any system in this mode.
Bi-amplification describes the practice of using separate amplifiers for each
of the drivers in a two-way system. Active crossovers, before the amplifier
band limit the signal frequencies assigned to each amp and speaker to
only those appropriate for each driver’s capabilities. Never bi-amp a
speaker without understanding the correct frequency range and power
level capability of the drivers, or severe damage can result to the driver that
is not covered by any warranty.
For Bi-amplified use follow these instructions and cautions.
Remove the protective grill and woofer. Inside the enclosure at the rear
can be seen the input connection plate and crossover board. Locate
Jumpers “XXX” and “YYY” and remove. Your speaker system is now set
up for bi-amp operation and will not operate in its original mode. Cable
wiring for bi-amplification uses Speakon™ connections 1+, 1- for low
frequencies, and 2+,2- for HF. Make sure of all connections before
operation.
SUB WOOFER OPERATION: Where significant extension of low
frequency output of your system is required, the addition of the LA-15 SUB
will provide well balanced, high output enhancement and power to the
overall system.
Passive mode:
In the standard passive mode, the power amplifier can be connected to the
LA –15 SUB with the LA-15 full range speakers series connected from the
input/output connector panel. (See drawing) Alternatively the sub models
can be connected directly to the amp as can the full range cabinets.
Active mode:
For high output and demanding applications the subs can be powered
directly and exclusively from their own amplifier. (See drawings, and
Bi-amp discussion note earlier.)
We recommend a crossover bandpass of:
Hi-pass: 30-35 Hz, minimum 12 dB per octave
Low pass: 80Hz, minimum 18 dB, ideally 24 dB per octave.
It is possible to operate subwoofers at higher low pass frequencies,
however system sound quality and integrity are improved by the use of
lower frequencies. Thus higher output levels can be used with human
voice and instrument fundamentals maintained at more natural balance.
If you have a variable low pass on your active crossover, we recommend
experimenting for the ideal frequency for your application. Take care to
re-adjust relative systems levels for any frequency changes made.
LA SERIES • TECHNICAL SPECIFICATION
MODEL
Type of speaker
HF drive unit
HF driver protection
Power Handling
Impedance
Sensitivity
SPL (peak)
Frequency
Response
Power Amplifier
Crossover point
Weight
Dispersion (H x V)
Input connector
Dimension (mm & ins)
W x H x D
LA-15
15” two way full range
1” Diaphragm dynamic
Protection lamp
250W continuous
500W Program
8 Ω
100dB
130dB
45Hz- 20kHz
NA
2.3kHz
23.75 kg / 52.3 lbs
60 x 40
2 x Speakon™ and
2 x 1/4” jack
480 x 700 x 380
18.9” x 27.6” x 15”
LA-15SUB
15” Sub
-
-
250W continuous
500W Program
8 Ω
98dB
128dB
30Hz- 150Hz
NA
150Hz
26.5kg / 58.4 lbs
NA
2 x Speakon™ and
2 x 1/4” jack
480 x 700 x 380
18.9” x 27.6” x 15”
Wharfedale International Limited, IAG
House, Sovereign Court, Ermine Business
Park, Huntingdon, Cambs, PE29 6XU
England
WHARFEDALE website : www.wharfedalepro.com
IAG Professional reserve the right to alter or improve
specifications without notice.
All rights reserved © 2001Wharfedale Pro
IAG Professional is a member of the
International Audio Group
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