Wharfedale Pro WLA-28X Manual de usuario

Wharfedale Pro User Manual

WLA-28X

www.wharfedalepro.com

IMPORTANT SAFETY INSTRUCTIONS

1. READ ALL INSTRUCTIONS - carefully and become familiar with the features and functions

of these products before operating them.

2. RETAIN THESE INSTRUCTIONS - for future reference.

3. COMPLY WITH ALL WARNINGS - All warnings and instructions for this product should be

adhered to.

3. RIGGING - SUSPENDING - MOUNTING - Rigging suspending or mounting of speaker systems

can expose members of the public to serious health risks and even death.

7. SERVICE - There are no user serviceable parts inside this product. Users should not attempt

to service this product. Warranty nulliﬁcation could result if this is attempted.

6. CAUTION - Professional loudspeaker systems are capable of generating very high sound

pressure levels. Use care with placement and operation to avoid exposure to excessive

volume levels. Permanent hearing damage can result when operated to extreme levels.

5. CABLES - Do not use shielded or microphone cables for connection between ampliﬁers and

speakers. Use only approved speaker cables with proper connectors.

4. USE WITH AMPLIFIERS - In order to avoid damage to drivers and other equipment, it is

advisable to establish and follow a routine for powering up and powering down a sound

system. With all system components connected, turn on source equipment (mixers, signal

processors, record and playback units, etc.) BEFORE powering up ampliﬁers. Transient

voltages from powering up source equipment can damage speakers if ampliﬁers are already

turned on. Make sure that ampliﬁer volumes are set to their minimum settings and power

up any system ampliﬁers LAST. It is recommended that all system components be allowed

to stabilize for several seconds before any source signals are introduced or level setting

adjustments are made. Similarly, when shutting systems down, turn all ampliﬁers oﬀ ﬁrst,

before powering down any other system components.

UNDER NO CIRCUMSTANCES ATTEMPT TO RIG, SUSPEND OR OTHERWISE MOUNT THESE

SPEAKERS UNLESS YOU ARE FULLY QUALIFIED AND CERTIFIED TO DO SO BY RELEVANT LOCAL,

STATE AND NATIONAL AUTHORITIES. ALL RELEVANT SAFETY REGULATIONS MUST BE FOLLOWED.

IF YOU ARE NOT PROPERLY QUALIFIED OR DO NOT KNOW OF PERTINENT REGULATIONS,

CONSULT QUALIFIED PERSONNEL FOR ADVICE.

PRODUCT FEATURES

The original WLA-28 has become a favourite around the world. Dual 8” drivers, extreme SPL

capabilities and an impressive price to performance ratio has meant that WLA-28 can be found on

stage, on tour and in ﬁxed installations.

The newly updated WLA-28X now takes that power and performance to a new level. With an

improved HF compression driver, new ﬂat grille design and improved HF protection circuitry, the

WLA-28X is ready to impress.

The new custom designed HF compression driver now delivers more control and more deﬁnition

to the HF content.

The ﬂat grille face also makes life easier for rental companies and improves long-term durability.

Features

• Re-designed dual 8” Passive line array

• Re-deﬁned HF compression driver

• Improved HF protection circuit

• Bi-amp and Passive mode switching

• System AES (Continuous) LF: 400 W HF: 90 W

• System Programme Power LF: 800 W HF: 180 W

• System Peak Power LF: 1600 W HF: 360 W

• 15 mm / 18 mm Birch Plywood construction

HF COMPRESSION DRIVER

The new neo HF compression driver delivers additional clarity and performance with enhanced

deﬁnition.

Frequency Impedance

SYSTEM IDEAS

BI-AMP MODE

For complete system versatility the WLA-28X can be

conﬁgured in either Bi-amp or Passive mode

PASSIVE

MODE

BI-AMP

MODE

SYSTEM TUNING

1. ARRAY SCALING

To get the most from any line array, it needs setting up correctly. Without tuning and reﬁning, the

system will not deliver to its full potential.

The system not only needs to be tuned to the room or venue, but the individual elements of the

array need to be tuned to work perfectly in relation to each other. By following the 4 ‘Tuning Tips’

you can improve the overall performance of your line array.

As elements are combined, the lower frequencies are proportionally increased. Therefore, when

more elements are used, more LF reduction is needed.

2. RANGE EQ

Higher frequencies are reduced in energy by distance. This is as a result of air absorption. To

compensate for this energy loss over distance, Peaking or Bell ﬁlters should be used.

The amount of energy absorbed by air also changes as a result of humidity. So always think about

this constantly variable loss (or comparative gain) of HF energy.

2 to 4 elements 5 to 8 elements 8 elements or more

More HF EQ needed due to distance

Less HF EQ needed

due to distance

3. SHAPE EQ

The physical shape of the array has a profound impact on its sonic performance. These physical

considerations should be compensated for within the DSP EQ to ensure a smooth frequency

response.

4. SUB PLACEMENT

Having the subwoofers physically aligned in the

same plane as the array elements is the ideal

scenario. However, this is not always possible.

In situations where the subwoofers and the

array elements cannot be physically aligned, a

DSP delay should be used.

1 ms (milliseconds) delay for every 0.34 m

(@15° C) can get you an acceptable result.

It is highly recommended that further ﬁne-tuning

should be done by using one of the many

industry standard measurement software

systems, reference microphones and soundcards.

Subs are behind array.

The array needs the delay.

Subs infront of the array.

The subs need the delay.

1 ms (milliseconds) delay

a) A at array using minimum splay angles between

the elements will naturally have a boost in the mid

b) A curved array will have a reduction in mid

Physical coupling results in

boost in mid frequencies

Reduced physical coupling results

in reduced mid frequencies

463.2

760.0

250.0

LINE DRAWINGS

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