AT-Series - Warehouse Sound Systems

AT-Series - Warehouse Sound Systems
20cm (8") 2-way
30cm (12") 2-way
38cm (15") 2-way
30cm (12") Subwoofer
38cm (15") Subwoofer
Compact High Power Speaker
-Series
AT
Professional Audio Systems
WS-AT80
WS-AT200
WS-AT300
WS-AT250
WS-AT350
The design philosophy behind the RAMSA AT-Series was to create an outstanding sound quality,
with performance integrity at all sound levels. This precludes the use of dynamic processing, which is non-linear by definition,
requiring transducers to be carefully designed and skillfully crafted with performance parameters
in harmony with the overall system performance objectives.
The RAMSA AT-Series speaker systems are high-integrity building blocks, creating sound systems
that deliver audiophile sound quality at high sound levels, with professional reliability and features.
Speaker systems include the WS-AT80/AT200/AT300 2way speakers, and the WS-AT250/AT350 subwoofers.
Coherence, frequency uniformity, and dynamic linearity are-inherent at all operating levels.
Flawless Propagation of Wave Front Ensures
Superb Sound Quality
Mounting System
The structure of traditional fixed-directional horns results in the
disturbance of radiation impedance, which is a cause of unnatural sound.
RAMSA has eliminated this problem by designing an ideal horn shape
via computer simulation, resulting in accurate reproduction with minimal
disturbance to the wave front. The high-frequency driver utilizes a new
SCWG (Square Contour Wave Guide) horn. Ordinary rectangular horn
type speakers radiate sounds in a diamond shaped pattern. When
speakers of this type are used, interference can occur and cause
frequency distribution to change, or phase cancellation (see illustration) .
To avoid this , RAMSA's unique SCWG horn radiates in a circular
pattern, offering directivity control at angles of 45 degrees horizontally,
vertically, and obliquely. As a result, this
SCWG horn can radiate sound waves at
closer intervals than conventional horns to
prevent interference and phase
cancellations. The SCWG horn delivers an
even distribution of sound pressure in a
wide frequency band, thus offering
RAMSA
increased intelligibility.
SCWG Horn
AT-Series Covering Area
WS-AT300
Plane wave
3
The plane wave
of the vibration
plate is converted
into a smooth
sphericalwave.
Spherical
wave
60°
Driver
Conventional horn
RAMSA SCWG horn
Shape of SCWG horn
(cross section)
WS-AT200
Built-in Compression Driver
2
A RAMSA exclusive compression driver is used for mid-range and high
frequencies. This driver is highly rated and ensures superlative sound
quality. A 35mm (WS-AT300/AT200)
Phase Plug
phenolic molding compound
Diaphragm
diaphragm manufactured with high
precision, and an optimized gap
between the phase plug and the
Edge Ring
Voice Coil
Top Plate
diaphragm make it possible to
reproduce sound faithfully all the way. Main Magnet
90°
WS-AT80
1
60°
Bottom Plate
Shake Handle Ensures
Easy Carrying-in and -out
The large handle on the side provides a
secure grip. The unit can be transported
smoothly and set up on the site easily.
Special Trapezoidal Design to
Facilitate Circular Array
Installation
A unique multifaceted design provides
sound pressure distribution characteristics
that minimize distortion when multiple sets
of speakers are used together. This design
enables two speakers ganged together to
cover a listening range of 90 degrees, and
four speakers ganged together to cover a
listening range of 180 degrees.
Sound Pressure Distribution Characteristics when Four Speakers
Are Ganged Together
●Set in a Straight line
(Conventional speaker)
●Set in a circular array
(RAMSA AT-series)
The AT-series high impact molded resin enclosure exceeds conventional
wooden box durability with less weight.
100
Powerful Handling Capacity
Sub
woofer
The WS-AT200 with AT250, and / or the
AT300 with AT350 have the same shapes,
respectively. The design allows neat
stacking, and the top and bottom surfaces
fit together for a firm grip.
Molded Enclosure
dB 110
2-way
Shaped for Easy Stacking
FREQUENCY RESPONSE WITH WS-AT300/350 AND WS-SP2A
distance ratio
Type
The left and right sides, top and bottom
and of the unit are each provided with two
integral screw points to accommodate a
variety of configurations, including a
circular array and a hanging installation.
Model No.
Continuous
Program Input
RMS*Input
(EIA-RS426A)
Sensitivilty
(1m/1W)
WS-AT80
WS-AT200
WS-AT300
WS-AT250
WS-AT350
160-watt
300-watt
400-watt
––
––
80-watt
150-watt
200-watt
400-watt
400-watt
92dB
99dB
99dB
91dB
92dB
Effective power measured by the test method prescribed by EIA (Electronic Industries Association) RS-426-A (1980).
*(The
test signal is white noise passed through a RC high pass filter with a time constant of 4 msec. and a RC low
pass filter with a time constant of 5 msec.)
Input Terminal
90
The cabinet has both Neutrik Speakon™ and 1/4 TRS phone connections,
connected in parallel connection on WS-AT200/AT300/AT250/AT350, and
1/4 TRS phone jack and wire-type terminals on WS-AT80.
80
70
60
50
100
200
500
1k
2k
5k
10k
(dB)
-40 -30 -20 -10
22.
5d
egr
ees
22.5 degrees
(dB)
-40 -30 -20 -10
Bass-Reflex Port of WS-AT250/AT350
for Low-End Details
0°
15°
30°
20
Zero degrees
20k
Hz
A bass-reflex port is provided to ensure resonance at low frequencies.
When a WS-SP2A processor is used, sound detail all the way down to
30Hz will be accurately reproduced.
Severe peak-and-dip fluctuation
and uneven sound
Peak-and-dip fluctuation minimized,
resulting even sound coverage
WS-AT
80
WS-AT
20cm (8") Compact High-Power Speaker
200
30cm(12") Compact High-Power Speaker
●20cm(8") 2-Way bass reflex speaker system
●Smooth response with high power handling capacity;
160W(continuous program), 80W(RMS)
●30cm(12") 2-Way bass reflex speaker system
●Smooth response with high power handling capacity;
300W(continuous program),150W(RMS)
●High-frequency driver utilizes new SCWG
(Square Contour Wave Guide) horn
●High impact molded resin enclosure
●Six-sided trapezoidal design with built-in handle
●Equipped with thermal protection circuit
●High-frequency driver utilizes new SCWG
(Square Contour Wave Guide) horn
●High impact molded resin enclosure
●Six-sided trapezoidal design with built-in handle
●Also be used as floor monitor and has
built-in stand adapter
●Equipped with thermal protection circuit
Input terminals
Parallel 1/4 TRS phone jack and
push wire-type input terminals.
Input terminals
Parallel Neutrik Speakon™
and 1/4 TRS phone input
connectors
dB
100
200
OUTPUT SPL
60˚
30˚
30˚
Beamwidth Response
(deg)
300
110
60˚
90
200
OUTPUT SPL
60˚
90
100
100
IMPEDANCE
60
0˚
30˚
Beamwidth
70
30˚
50
60˚
60˚
8Ω
70
50
40
30˚
2ND H.D.
70
IMPEDANCE
60
0˚
30
30˚
8Ω
50
20
Horizontal
Vertical
2ND H.D.
40
90˚
90˚
Horizontal
-30 -20 -10 0 +10dB
+10dB 0 -10 -20 -30
500Hz
1kHz
2kHz
4kHz
60˚
Beamwidth
80
80
90˚
90˚
Horizontal
-30 -20 -10 0 +10dB
+10dB 0 -10 -20 -30
500Hz
1kHz
2kHz
4kHz
60˚
30
20
100 200
Mounting Hardware
5k
10k 20k
Hz
200
500
1k
2k
5k
10k
Dimensions
2-way, bass-reflex
8Ω
80W (RMS EIA-RS426A), 160W (continuous program)
92 dB (1 m/1 W)
70 Hz –20 kHz
2,000 Hz
LF : 20cm (8") woofer
HF : 60˚✕ 60˚ SCWG horn/compression driver
60˚(horizontal) ✕ 60˚(vertical)
405✕280✕243mm (16-15/16" ✕ 11" ✕ 9-9/16")
approx. 7.5kg (16.5 lbs)
1/4 TRS phone connector
Push wire terminal
Forged Eye Bolts
Professional Audio Systems
90˚
90˚
Vertical
-30 -20 -10 0 +10dB
+10dB 0 -10 -20 -30
500Hz
1kHz
2kHz
4kHz
20
20
Horizontal
Vertical
3RD H.D.
50
100 200
Specifications
Net
8-M8
243 (9-9/16")
Dispersion
Dimensions (H✕W✕D)
Weight
Input Terminals
2k
128 (5-1/16")
Speaker Type
Input Impedance
Power Handling Capacity
Sensitivity
Frequency Response
Crossover Frequency
Drivers
1k
405 (15-15/16")
Specifications
500
20k
Hz
128 (5-1/16")
280 (11")
Unit : mm (inches)
Speaker Type
Input Impedance
Power Handling Capacity
Sensitivity
Frequency Response
Crossover Frequency
Drivers
Dispersion
Dimensions (H✕W✕D)
Weight
Input Terminals
Mounting Hardware
500
1k
2k
5k
10k 20k
Hz
200
500
1k
2k
5k
10k
20k
Hz
Dimensions
2-way, bass-reflex
8Ω
150 W (RMS EIA-RS426A), 300 W (continuous program)
99 dB (1 m/1 W)
70 Hz –18 kHz
2,400 Hz
LF : 30cm (12") woofer
HF : 90˚✕ 40˚ SCWG horn/compression driver
90˚(horizontal) ✕ 40˚(vertical)
577✕394✕300 mm (22-11/16" ✕ 15-1/2"✕ 11-13/16")
approx. 15 kg (33lbs)
1/4 TRS phone connector
Neutrik SpeakonTM connector
Forged Eye Bolts
346 (13-5/8")
Grill Net
577 (22-11/16")
3RD H.D.
50
30
10
30
20
20
50
40
40
10
Vertical
90˚
90˚
-30 -20 -10 0 +10dB
+10dB 0 -10 -20 -30
500Hz
1kHz
2kHz
4kHz
70
394 (15-1/2")
8-M8
150 (5-7/8")
300 (11-13/16")
dB
100
60˚
0˚
99 (3-7/8")
171 (6-3/4")
30˚
30˚
Frequency Response
Directivity
Beamwidth Response
(deg)
300
110
79 (3-1/8")
0˚
150 (5-7/8")
Frequency Response
Directivity
Unit : mm (inches)
Supreme sound quality based on years
of experience in hall acoustics.
WS-AT
300
Subwoofers
WS-AT250
WS-AT350
38cm(15") Compact High-Power Speaker
●38cm (15") 2-Way bass reflex speaker system
●Smooth response with high power handling
capacity; 400W(continuous program), 200W(RMS)
●High-frequency driver utilizes new SCWG (Square
Contour Wave Guide) horn
●High impact molded resin enclosure
●Six-sided trapezoidal design with built-in handle
●Also be used as floor monitor and has built-in stand adapter
●Equipped with thermal protection circuit
●Optional mounting brackets* are available,WS-AQ6W
(for wall) and WS-AQ6C (for ceiling) *available in USA only
30cm(12")
woofer
38cm(15")
woofer
●High power handling capacity ;
400W RMS
●Response down to 30 Hz
●Designed to compliment
WS-AT200 with AT250 and
WS-AT300 with AT350 in
sound quality and design
Input terminals
Parallel Neutrik Speakon™
and 1/4 TRS phone input
connectors
Input terminals
(deg)
300
OUTPUT SPL
100
WS-AT350
200
60˚
90
IMPEDANCE
80
10
100 200
Mounting Hardware
500
1k
2k
5k
10k 20k
Hz
200
500
1k
2k
5k
10k
20k
Hz
Dimensions
2ND H.D.
50
50
40
40
30
20
50
100
200
500
1k
30
20
8Ω
2ND H.D.
50
100
200
500
1k
394 (15-1/2")
WS-AT350
480 (18-7/8")
163 (6-7/16")
480 (18-7/8")
Specifications
Grill Net
WS-AT250
163 (6-7/16")
8-M8
380 (14-15/16")
150 (5-7/8")
2-way, bass-reflex
8Ω
200 W (RMS EIA-RS426A), 400 W (continuous program)
99 dB (1 m/1 W)
70 Hz –18 kHz
2,200 Hz
LF : 38cm (15") woofer
HF : 60°✕ 40° SCWG horn/compression driver
60°(horizontal) ✕ 40°(vertical)
694✕480✕380 mm (27-5/16" ✕ 18-7/8" ✕ 14-15/16")
approx. 26kg (57.2 lbs)
1/4 TRS phone connector
Neutrik Speakon™ connector
Forged Eye Bolts
694 (27-5/16")
Dispersion
Dimensions (H✕W✕D)
Weight
Input Terminals
Grill Net
3RD H.D.
8Ω 60
60
687 (27-1/2")
Specifications
Speaker Type
Input Impedance
Power Handling Capacity
Sensitivity
Frequency Response
Crossover Frequency
Drivers
8-M8
3RD H.D.
50
WS-AT250
IMPEDANCE
70
70
3RD H.D.
20
80
IMPEDANCE
20
Vertical
90˚
90˚
-30 -20 -10 0 +10dB
+10dB 0 -10 -20 -30
500Hz
1kHz
2kHz
4kHz
Unit : mm (inches)
Dimensions
Horizontal
Vertical
8Ω
30
OUTPUT SPL
90
150 (5-7/8")
Unit : mm (inches)
Speaker Type
Input Impedance
Power Handling Capacity
Sensitivity
Frequency Response
Drivers
Weight
Input Terminals
Mounting Hardware
Bass-reflex
8Ω
400 W (RMS EIA-RS426A)
91 dB (1 m/1 W)
92 dB (1 m/1 W)
30Hz –1400Hz
30Hz –1400Hz
LF : 30cm (12") woofer
LF : 38cm (15") woofer
approx. 15kg (33lbs)
approx. 26.5kg (58.3lbs)
1/4 TRS phone connector
Neutrik Speakon™ connector
Forged Eye Bolts
346 (13-5/8")
150(5-7/8")
WS-AT350
163 (6-7/16")
Unit : mm (inches)
Grill Net
694 (27-5/16")
60˚
100
OUTPUT SPL
90
20
40
60˚
100
30
WS-AT250
WS-AT350
79
(3-1/8")
50
30˚
50
40
dB
110
WS-AT250
150 (5-7/8")
2ND H.D.
dB
110
8-M8
150 (5-7/8")
70
577 (22-11/16")
100
70
60
0˚
30˚
80
Frequency Response
687 (27-1/2")
90˚
90˚
Horizontal
-30 -20 -10 0 +10dB
+10dB 0 -10 -20 -30
500Hz
1kHz
2kHz
4kHz
Beamwidth
60˚
300(11-13/16")
dB
150 (5-7/8")
380 (14-15/16")
110
30˚
99(3-7/8")
171(6-3/4")
0˚
30˚
Parallel Neutrik Speakon™
and 1/4 TRS phone
input connectors
Beamwidth Response
163 (6-7/16")
Frequency Response
Directivity
Wide Variety of Applications
Arrays
Wall/ceiling mounting
Fly hardware
6 sided trapezoidal shape and
system directivity performance
forged metric eye bolts
for system rigging
wide range of applications possible
with mounting bracket
Stacking
Stand adapter
Floor monitor
Carrying handle
molded-in ribs on
the AT-series
make this easy
the AT-series
mount to most
speaker stands
use the AT-series as fold-back
monitor application
portable system with
recessed handle
Sub-woofer processor
210 (8-1/4")
WS-SP2A
WS-SP2A Signal Flow (Simplified)
Type
Inputs
Outputs
Input A
A+B Output
Pin1–Gnd
Pin2–Sig+
Pin3–Sig-
Σ
LF Output
Output B
Input B
44.5 (1-3/4")
Specifications
Output A
Balanced
Inputs
7
(1/4")
●Channel divider for WS-AT250/AT350 subwoofers.
●Provides very low frequency (VLF) processing with three
selectable crossover points of 50 Hz/80 Hz/120 Hz.
Unit : mm (inches)
210 (8-1/4")
195 (7-11/16")
8
(5/16")
Dimensions
Unbalanced
Outputs
Maximum input level
Minimum load impedance
Gain (pink noise)
Output noise level
Distortion
Turn-on delay
Power requirements
Dimensions (H✕W✕D)
Weight
Line level Subwoofer Processor
Two, electrically balanced (female XL type) +4dB, 20kΩ
Four, unbalanced :
Output A (high pass processed) 1/4 TRS +4dB,
Output B (high pass processed) 1/4 TRS +4dB,
VLF output (sum of A and B, band pass processed), 1/4 TRS +4dB,
A+B output (sum of A and B, all pass processed), 1/4 TRS +4dB,
+20dB
600Ω
Unity
-95dB or less, (IHF A WTD)
Outputs A, B, A+B ; 0.05% or less (+4dB at 1kHz)
VLF Output; 0.05% or less (+4dB at 35Hz)
Approx. 3 to 5 seconds
120V AC 60Hz, 126mA (12W)
44.5 ✕ 210 ✕ 210mm (1-3/4" ✕ 8-5/16" ✕ 8-5/16")
1.8kg (4lbs)
RMS input : Effective power measured by the test method prescribed by EIA (Electronic Industries Association) RS-426-A (1980).
(The test signal is white noise passed through a RC high pass filter with a time constant of 4 msec. and a RC low pass filter with
a time constant of 5 msec.)
• Weights and dimensions are approximate.
• Specifications are subject to change without notice.
• These products may be subject to export control regulations.
DISTRIBUTED BY:
Broadcast & Television Systems Company
Division of Matsushita Electric Corporation of America
RAMSA/Professional Audio Systems
3330 cahuenga Blvd. W. Los Angeles, CA 90068 323-436-3617
PANASONIC CANADA INC.
5770 Ambler Drive, Mississauga, Ontario, L4W 2T3 Canada (905) 624-5010
Printed in Japan
[1P-457D]
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