Toa SW-38S-UL, SW-38W-UL Instruction Manual
PROFESSIONAL SOUND SYSTEM
Super Woofer System
Model SW-38S-UL
SW-38W-UL
GENERAL DESCRIPTION
The TOA SW series Super Woofers are super-low frequen-
cy loudspeaker systems designed for professional applications in high-level sound reinforcement environments where
high efficiency, super-low frequency range, and faithful reproduction are required, such as discos, concert halls,
theaters, movie houses, auditoriums, and in live sound
reinforcement applications.
The SW-38S bass-reflex enclosure contains one (1) ultralinear, high-power 15" woofer, while the SW-38W contains
two 15" woofers.
The woofer, Model HLS38UL-8, employs a 2.8" (72mm) diameter voice coil of edge-wound copper ribbon on an aluminum coil form, which is driven by powerful double ferrite
magnets. The magnets are supported by a rugged diecast
aluminum frame and give a flux density of 14,200 gauss.
Bass-reflex ports are tuned to the optimum condition by
computer, allowing the woofer to provide maximum performance.
The system is rated at 300 watts RMS (150 watts RMS for
38S) of continuous pink noise, and at 900 watts (450 watts
for 38S) of continuous program material.
Two pairs of screwtype input terminal (one-pair of terminals
in the case of the 38S) is provided on rear of enclosure.
Removal of the jumper pieces permit the 38W to drive the
two woofers independently by their respective amplifiers.
By removing blank panels on the rear-mounted input
panel, two female XLR connectors (38W) or one each of
male and female XLR connector (38S) can be mounted.
The enclosure is highly reinforced to eliminate unwanted
vibrations.Large carrying handles are provided on both
sides of an enclosure, and a detachable punched metal
grille in front. The enclosure is finished in grey painting.
FEATURES
1. Ultra linear, high power 15" woofer provides high efficiency in the super-low frequency range.
2. High power handling capacity of 300 watts (150 watts
for 38S) RMS continuous pink noise and 900 watts (450
watts for 38S) continuous program material.
3. Bass-reflex enclosure tuned to the optimum conditions
by computer assures the maximum woofer performance.
4. Screwtype input terminal (2 pairs for 38W and 1 pair for
38S) are provided. By removing jumper pieces two
woofers can be driven independently by means of respective amplifiers (38W).
5. Two mountable female XLR connectors (38W) or one
each of male and female XLR connector (38S).
6. Rugged, grey-painted enclosure with carrying handles
and a detachable punched grille.
Specifications
MODEL NUMBER
Enclosure
Speaker
Power Capacity
Continuous Pink Noise
Continuous Program
Impedance
Sensitivity
Frequency Response
Recommended Crossover
Frequency
Input Terminals
Finish (Enclosure)
Dimension
Weight
Standard Accessories
SW-38W-UL
Vented (bass reflex) type
Two 15" woofers
300 watts RMS of band lim ited pink noise
(40~1kHz)
900 watts
4 ohms (parallel) or Two 8 ohms
(independent)
96dB (1W/1m)
35~1
60~100Hz
Screwtype
Painted grey
600(H)x950(W)x600(D) mm
23.6(H)x37.4(W)x23.6(D) inches
74kg (163 Ibs)
Instruction Manual 1 Warranty Card 1
SW-38S-UL
One 15" woofer
150 watts RMS of band limited pink noise
(40~1 k Hz)
450 watts
8 ohms
93dB (1W/1m)
kHz
600(H)x490(W)x600(D) mm
23.6(H)x19.3(W)x23.6(D) inches
40kg (88 Ibs)
)Characteristic Diagrams (1W/1m: ¹/3 Octave Pink Noise
SW-38W-UL
Input Panel
Right-hand side woofer
(Viewed from the front)
SW-38S-UL
(Using an external frequency dividing network)
Blank panel (for mounting female XLR connector)
Blank panel (for mounting male XLR connector)
Left-hand side woofer
Jumper piece
Input panel
Fixing screw
Screwtype terminals
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 disconnect the two
woofers from each other, allowing each of them to be
driven independently by means of their respective ampli-
SW-38S-UL
[Fig
1]
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.
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