Panasonic Ramsa Speaker Sysem Ws At300 Subwoofer System AT350 Operating Instructions

Speaker System
WS-AT300
Subwoofer System
WS-AT350
Before attempting to connect or operate this product, please read these instructions completely
CONTENTS
REGULATORY STATEMENTS  .............................................................................. 2
SAFETY INSTRUCTIONS  ...................................................................................... 2
PREFACE .............................................................................................................. 3
PRECAUTIONS...

-2-
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...

-3-
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...

-4-
• Changing the tweeter direction
You can alter the directivity when placing the WS-
AT300 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.
40
60
40
60
Sound dispersion angles 

-5-
• On wall or ceiling
You can install the speaker on a wall or ceiling with a
mounting bracket (not supplied).
qPlace the bracket on the enclosure.
wScrew the eye bolts into the screw holes of the
enclosure by hand.
eFix the speaker to a wall or ceiling.
rTake safety protections mentioned in “Secure the
speaker.”
Note:Installers should seek advice on the building
structure and load capacity, if unknown, from
an architect or a structural engineer.
• Secure the Speaker
Use safety wires (not supplied)...

-6-
You can find the TS (tip-sleeve) phone jack and
SPEAKON connector on the back of the enclosure.
These two are usable as input or output terminals since
they are wired in parallel. See the block diagram on
page 9.
CONNECTING SPEAKER CABLES
Notes:
• Do not connect more than two speakers in parallel.
Excessively low impedance can cause distorted
output sound or damage to the amplifier.
• Match the sound phase of all speakers by
confirming the polarities of connection when using
two or more speakers. 1....

-7-
WIRING CONNECTOR AND CABLE
Cap
Cable clamp
Cable clampLoosen screws. Push
Cable
Tighten the screw.
Solder here.
Push to the end.
Convex Convex Cocave
Cocave
Cap
AMP OUT SPEAKON
+1 +
1 –
(Not used)2 +
(Not used)2 – –
Tarminal block

Connector sleeve
Push
Plug Cover
Speaker CableSleeve
 Tip
AMP OUT Plug
+ Tip
– Sleeve
TS (tip-sleeve) phone plug
1. Unscrew the plug cover.
2. Thread speaker cables through the plug cover.
3. Connect and solder the + (positive) polarity wire to
the tip of the plug.
4....

-8-
SETTING THE SUBWOOFER PROCESSOR
PROTECTION CIRCUITS FOR WS-AT300
SYSTEM DIAGRAM
Audio
Mixer
WS-SP2A Subwoofer
Processor
In A
In BAmplifier
Amplifier
Amplifier200W
200W
400W
BTL
400W
BTL
WS-AT300
WS-AT350
-50 --40 --50 --40 -
• The WS-AT300 has separate overload protection
circuits for woofer and tweeter. When activated by an
excessive input signal, they mute the output sound.
Turn down the volume control for 2 to 20 seconds to
reset the circuits.
ABVLFIVLFI 123 123 123AK
WS-AT350 SUB WOOFER MAIN...

-9-
WS-AT300 WS-AT350
Type 2 Way, Bass-reflex type Bass–reflex type
Input impedance 8 ohms
Power capacity 400 W (continuous program input) 400W (RMS)
200 W (RMS) —
Sound Pressure Level 99 dB [1 W, 1m (3.3 ft)] 92 dB [1 W, 1m (3.3 ft)]
Max. Sound Pressure Level 122 dB [1m (3.3 ft)]  118 dB [1m (3.3 ft)]
Frequency response 70 Hz - 18 000 Hz 30 Hz - 1 400 Hz
Crossover frequency 2 200 Hz —
Speaker
Woofer 38 cm (15”) cone speaker 38 cm (15”) cone speaker
Tweeter SCWG horn speaker —
Dispersion 60°(horizontal),...

-10-
TYPICAL PERFORMANCE
10
20 30 40 50
60 70 90
80 100 110
20 50 100 200 500 1000 2000 500010000 20000
(dB)(1w, 1m)
Frequency response
2nd harmonic 
distortion
Impedance3rd 
harmonic 
distortion 8W 16W 32W
1020103040
0
30
60
90 330
300
270
240
210120
180150
201001030400
0
30
60
90 330
300
270
240
210120
150
180
1020103040201001030400
10
20 30 40 50
60 70 90
80 100 110
20 50 100 200 500 1000 2000 500010000 20000
(dB)(1w,1m)
Frequency 
response
2nd harmonic 
distortion
Impedance
3rd 
harmonic 
distortion...