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TOA SPEAKER SYSTEM
SUPER WOOFER SYSTEM
SW-38W-UL/SW-38S-UL
DESCRIPTION
The TOA SW Series Super Woofer System SW-38W-UL
and SW-38SUL are ultra-low frequency bass-reflex loudspeakers designed for professional applications in high-level
sound reinforcement situations where high efficiency, an
extremely low frequency range and true-to-the-original
reproduction are required. The SW Series Super Woofer
System is ideal for dance clubs, concert halls, theaters,
movie houses, auditoriums, and in live sound enhancement.
The SW-38S bass-reflex enclosure contains one ultra-linear,
15”
high-power
woofers.
The woofer used in the SW Series is the HLS38UL-8, with
a 2.8” (72mm) diameter voice coil of edge-wound copper
ribbon on an aluminum coil form. The coil is driven by
powerful double ferrite 14,200 gauss flux density magnets,
supported by a rugged diecast aluminum frame. The extralong voice coil on the HLS38 produces a greater coil
surface area within the magnetic flux field, resulting in
precise control over cone movement, excellent heat dissipation, and less dynamic compression during extended
high-power applications.
The bass-reflex cabinet design is computer optimized to
produce a flat frequency response, wide bandwidth, and a
more pleasing low-frequency sound than is possible with
comparable horn-loaded designs.
The SW Series Super Woofer System is rated at 300 watts
RMS (150 watts RMS on the 38S) of continuous pink noise,
and at 900 watts (450 watts on the 38S) of continuous
program material.
woofer, while the SW-38W comes with two
Two pairs of screw type input terminals (one pair on the 38S)
are provided on the rear of the SW Series enclosure.
Removal of the jumper pieces permits the two woofers on
the 38W to be driven independently, each by its respective
amplifier. By removing blank panels on the rear-mounted
input panel, two female XLR connectors (38W) or one
male and one female XLR connector can be attached.
The SW Series enclosure is finished in gray paint and is
highly reinforced to eliminate unwanted vibrations. Large
carrying handles are provided on both sides of the
enclosure, and the punched-metal front grille is detachable.
FEATURES
1. Ultra-linear, high-power 15” woofer provides enhanced
response efficiency in the extra-low frequency range.
2. High power handling capacity of 300 watts RMS (150
watts for the 38S) continuous pink noise, and 900 watts
(450 watts for the 38S) of continuous program material.
3. CAD (Computer-Assisted Design) employed for bass-
reflex enclosure to assure precise timing and maximum
performance.
4. Screw type input terminals (2 pairs on the 38W and
1 pair on the 38S) are provided. By removing their
jumper pieces, the two 38W woofers can be driven
independently by their respective amplifiers.
5. Two female XLR connectors may be attached to the
38W, and one male-female connector on the 38S.
6. Rugged gray-painted enclosure with carrying handles
and a detachable punched-metal grille.
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SPECIFICATIONS
Model No.
Enclosure
Speaker
Power Handling Capacity
Continuous Pink Noise
Continuous Program
Nominal Impedance
Sensitivity
Frequency Response
Box Tuning Frequency
Recommended Crossover
Frequency
Input Terminals
Enclosure Materials
and Finish
Dimensions
Weight
APPEARANCE AND DIMENSIONAL DIAGRAM
SW-38W-UL
SW38W-UL
Vented (bass-reflex) type
Two 15” woofers, 2.8” (72 mm) edge-wound copper
ribbon voice coil, Aluminum diecast construction
300 watts RMS of band-limited pink noise (40 Hz to
1kHz, 24 hours)
900 watts
4 ohms (parallel) or Two 8 ohms (independent)
96 dB (1W/1m, Band-limited pink noise, 50 Hz to
500 Hz)
35 Hz to 1 kHz
40 Hz
60 Hz to 100 Hz
Screwtype
Lauan plywood, Lacquer in gray color
23.6(H) x 37.4(W) x 23.6(D) inches
600(H) x 950(W) x 600(D) mm
163 Ibs (74 kg)
37.4" (950mm)
I
23 .6 ” (600mm)
Model No.
Enclosure
Speaker
Power Handling Capacity
Continuous Pink Noise
Continuous Program
Nominal Impedance
Sensitivity
Frequency Response
Box Tuning Frequency
Recommended Crossover
Frequency
Input Terminals
Enclosure Materials
and Finish
Dimensions
Weight
19.3” (490mm)
SW-38S-UL
SW-38S-UL
Vented (bass-reflex) type
15” woofer, 2.8” (72 mm) edge-wound copper ribbon
voice coil, Aluminum diecast construction
150 watts RMS of band-limited pink noise (40 Hz to
1kHz, 24 hours)
450 watts
8 ohms
93 dB (1W/1m, Band-limited pink noise, 50 Hz to
500 Hz)
35 Hz to 1 kHz
40 Hz
60 Hz to 100 Hz
Screwtype
Lauan plywood, Lacquer in gray color
23.6(H) x 19.3(W) x 23.6(D) inches
600(H) x 490(W) x 600(D) mm
88 Ibs (40 kg)
*Specifications are subject to change without notice.
FREQUENCY RESPONSE
•SW-38W-UL
(1W/1 m:
INPUT PANEL
Right-hand side woofer,
(Viewed from the front)
j
Enclosure
k
Speaker Unit
l
Punched Metal Grille
m
Handle
n
Input Terminal
1/3 Octave Pink Noise)
(Using an external crossover network)
Left-hand side woofer
Jumper piece
Input panel
Fixing screw
l
SW-38S-UL
dB
80
60
20 50
Blank panel (for mounting female XLR connector)
100
200
Blank panel (for mounting male XLR connector)
500
1000
2000
HZ
SW-38W-UL
The two woofers of the SW-38W-UL are connected in
parallel when jumper pieces are used (impedance is 4
ohms). Removal of the jumper pieces disconnects the two
woofers from each other, allowing each of them to be
driven independently by means of their respective ampli-
Screwtype terminals SW-38S-UL
fiers (impedance of each is 8 ohms). By removing the
blank panels two female XLR connectors (38W) or one
each of male and female XLR connector (38s) can be
mounted. To do wiring work, remove the rear-mounted
input panel.
L
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CONNECTION DIAGRAMS
1. Four-way system using electronics crossover network and 4 or 5 power amplifiers.
l
SW-38W-UL
High
High Range Speaker
Mixer or Preamplifier
l
SW-38S-UL
Mixer or Preamplifier
Electronic crossover network
Electronic crossover network
Mid
Super-low
Mid Range Speaker
Low Range Speaker
Without
jumper pieces
--
---
_____
Power Amplifier
SW-38W-UL
High Range Speaker
Mid Range Speaker
Low Range Speaker
With jumper
pieces
2. System using electronics crossover network and 2 or 3 power amplifiers.
l
SW-38W-UL
Full Range Signal
I
I
Mixer or Preamplifier
l
SW-38SUL
Electronic crossover network
I
Super-low
I
I
I
Mixer or Preamplifier
--
---
Power Amplifier
Power Amplifier
Without
jumper pieces
SW-38S-UL (2 systems at max.)
With jumper
pieces
SW-38W-UL
SW-38S-UL (2 systems at max.)
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TOA Corporation
Printed in Japan 833-64-519-30
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