Preface; Precautions - Panasonic RAMSA WS-AT300 Operating Instructions Manual

PREFACE

WS-AT300
• This speaker system is a 2-way bass-reflex type
incorporating a 38-cm (15") woofer and a Square
Contour Wave Guide (SCWG) horn tweeter.
• The speaker system accepts a continuous program
input of 400 W or 200 W(RMS). It delivers high
outputs from its compact body with a maximum
sound pressure level of 122 dB.
• The SCWG horn minimizes the disturbing reflection
sound generated near the open end and to provide
a constant directivity of 60˚ (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.

PRECAUTIONS

• 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/
disconnection of
powered-up equipment
* Pop
noise from
appropriate 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
inputs/outputs with any
microphones without
WS-AT350
• This Subwoofer is a bass-reflex type incorporating
a 38-cm (15") cone speaker and to be used with
the RAMSA Subwoofer Processor WS-SP2A.
• The WS-AT350 accepts an input of 400 W (RMS). It
delivers high outputs, though it is small in size, with
a maximum sound pressure level of 118 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.
* 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 colors when
using two or more speakers.
• Read "PROTECTION CIRCUITS" on page 8. Turn
down the volume
immediately if the sound suddenly decreases.
• You should use the WS-AT350 Subwoofer all the
time with Subwoofer Processor WS-SP2A. The WS-
SP2A processes the signal to protect the speakers
from damage due to an excessive input signal.
-3-
control of the amplifier