WS-AT250
Table of contents
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Speaker System
WS-AT200
Subwoofer System
WS-AT250
Before attempting to connect or operate this product, please read these instructions completely
CONTENTS
REGULATORY STATEMENTS ............................................................................ 2
SAFETY INSTRUCTIONS .................................................................................... 2
PREFACE ............................................................................................................ 3
PRECAUTIONS ................................................................................................... 3
INSTALLING THE SPEAKER .............................................................................. 4
CONNECTING SPEAKER CABLES .................................................................... 6
WIRING CONNECTOR AND CABLE .................................................................. 7
SETTING THE SUBWOOFER PROCESSOR ....................................................... 8
PROTECTION CIRCUITS FOR WS-AT200 .......................................................... 8
SYSTEM DIAGRAM ............................................................................................ 8
BLOCK DIAGRAM .............................................................................................. 9
SPECIFICATIONS ............................................................................................... 9
TYPICAL PERFORMANCE .................................................................................. 10
DIRECTIVITY ....................................................................................................... 10
APPEARANCE .................................................................................................... 11
WS-AT200
WS-AT250
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Please observe the following instructions carefully for your own safety and that of equipment.
• If the speakers fall, it can cause serious damage to persons or properties.
• Read the instructions printed on the back of the speakers.
• Ask your nearest dealer or qualified installers for installation and wiring.
• Place the speakers on a stable surface.
• Secure the speakers with safety wires or equivalent.
• Detach the speaker and the speaker stand before adjusting their height.
• Separate the speaker and the speaker stand before moving the set to a different location.
• Do not install the speaker with the stand at a place where passers-by might stumble on them.
SAFETY INSTRUCTIONS
WARNING:
TO PREVENT FIRE OR ELECTRIC SHOCK HAZARD,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR
MOIS
TURE.
The serial number of this product may be found on the back
of the unit.
You should note the serial number of this unit in the space
provided and retain this book as a permanent record of your
purchase to aid identification in the event of theft.
Model No.
Serial No.
REGULATOR Y STATEMENTS
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WS-AT200
• This speaker system is a 2-way bass-reflex type
incorporating a 30-cm (12”) woofer and a Square
Contour Wave Guide (SCWG) horn tweeter.
• The speaker system accepts a continuous program
input of 300 W or 150 W (RMS). It delivers high outputs from its compact body with a maximum sound
pressure level of 121 dB.
• The SCWG horn minimizes the disturbing reflection
sound generated near the open end and to provide
a constant directivity of 90˚ (horizontal) and 40˚
(vertical). You can easily attach again the horn to
the enclosure by turning it 90˚ as required for horizontal or vertical speaker installation.
• The enclosure has essential features such as
toughness to transportation, a recessed type handle for carrying, the convex and concave for stacking, holes for mounting bracket, safety wires, etc.
PREF ACE
WS-AT250
• This Subwoofer is a bass-reflex type incorporating a
20-cm (12”) cone speaker and to be used with the
RAMSA Subwoofer Processor WS-SP2A.
• The WS-AT250 accepts an input of 400 W (RMS). It
delivers high outputs, though it is small in size, with
a maximum sound pressure level of 117 dB.
• The enclosure has essential features such as
toughness to transportation, a recessed type handle for carrying, the convex and concave for stacking, holes for mounting bracket, safety wires, etc.
PRECAUTIONS
* High frequency noise developed by fast-forward
or fast-rewind operation of a tapedeck
* Out of tune noise in FM broadcast
* Feed-back from microphones or electronics
musical instruments
• Match the polarities of all the speakers by observing
the connectors and wire colours when using two or
more speakers.
• Read “PROTECTION CIRCUITS” on page 8. Turn
down the volume control of the amplifier immediately if the sound suddenly decreases.
• You should use the WS-AT250 Subwoofer all the
time with Subwoofer Processor WS-SP2A. The WSSP2A processes the signal to protect the speakers
from damage due to an excessive input signal.
• Power loss may increase as the total speaker
impedance gets lower with a number of speaker
hookups. Use the largest speaker cable in wire
gauge to reduce power loss.
• Switch off the power amplifiers before connecting
the speakers or other peripherals.
• Avoid the followings all the time to protect the
speakers from damage.
* Turning on and off mixing consoles and other
peripherals may cause shock noise when the
amplifiers and subwoofer processor are on
* Shock noise resulting from the connection/ dis-
connection of inputs/outputs with any poweredup equipment
* Pop noise from microphones without appropri-
ate use of breath-pop screen and/or high-pass
filter
* Click noise caused by switching on or off the
phantom power for microphones
* Continuous operation at very low frequency from
an oscillator, synthesizer or program sources.
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• Changing the tweeter direction
You can alter the directivity when placing the WSAT200 horizontally.
1. Unscrew four bolts to detach the tweeter.
2. Turn the tweeter by 90˚.
3. Tighten four bolts to attach the tweeter again.
4. Rotate the RAMSA badge by 90˚.
INSTALLING THE SPEAKER
• Stacking
Speakers can be stacked one upon another as illustrated.
Place an additional speaker on top of another, making
sure to match their convex and concave portions.
Do not place stacked speakers on an unstable surface.
If the surface is uneven, not level, or vibrating, the
stacked speakers may fall down and cause injuries.
40
90
40
90
Sound dispersion angles
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