P R O L A - 1 5
A N D L A - 1 5 S U B ( P O W E R E D )
Active
Crossover
LF
HF
Full range
signal from
audio mixer
LA-15P & LA-15SP Series extended full range
system with external active crossover
pre-filtered output signal
from active crossover to
(high) LA-15P input
pre-filtered output signal
from active crossover to
(low) LA-15PB 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.
BALANCED LINE OPERATION: To obtain the highest quality sound from
these Wharfedale powered speakers it is advisable to use high quality
balance line cabling.
Balanced Line Operation explained.
Balanced line is used to improve hum and noise rejection. The term
balanced lined represents a cable comprising of three wires, two sleeved
and one screen (2 conductor shielded cable). The two isolated sleeved
wires carry the signal information and are isolated from the circuit ground
by exactly the same impedance (potential) but of opposite phase (polarity).
Therefore the two cables have equal but inverted potential differences from
that of ground. In some systems only one cable actually carries the signal
but both cables show the same impedance properties with respect to
ground. The third is the shield and chassis ground. The balanced line
mode offers high rejection of common-mode noise that can be introduced
into a non balanced line over a long run signal cable and will enable true
system grounding ( no earth/ground loops, typified by hum).
An unbalanced cable is a single conductor shielded cable with the centre
sleeved cable carrying the signal and the shield at ground. Over a long
cable run there is a risk of noise and hum being introduced into the system.
(see table for balanced/unbalanced signal wiring)
Power is supplied to the speakers via an IEC mains connector useing the
lead supplied and the mains voltage on the powered speaker set to
conform to the country to which the unit is sold.
If using both LA-15P and the LA-15PB in a complete system they can be
linked together with a signal lead or an external powered crossover unit
(see diagram) can be incorporated.
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-15P
15” two way full range
1” Diaphragm dynamic
Protection lamp
250W continuous
500W Program
800W Peak
8
Ω
100dB
129dB
45Hz- 20kHz
200W
2.3kHz
35 kg / xxx lbs
60 x 40
2 xXLR/1/4” jack combi
480 x 700 x 380
18.9” x 27.6” x 15”
LA-15PB
15” Sub
-
-
250W continuous
500W Program
800W Peak
8
Ω
98dB
125dB
30Hz- 150Hz
200W
150Hz
33.25kg / xxx lbs
NA
2 xXLR/1/4” jack combi
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
Frequency
LA-15P Low Pass 2300
High Pass 2300
Frequency
LA-15PB Low Pass 100
Band Pass 30Hz-150Hz
