L-ACOUSTICS P Series Manual V2.1
7/12/2007
16
1.6 SB15P DESCRIPTION
The SB15P self-powered subwoofer contains a single 15-inch loudspeaker component that is front-
loaded in an optimally-tuned and vented enclosure. Usable frequency response is 45 to 100 Hz with
less than ± 3 dB variation and the usable -10 dB low frequency response is 40 Hz. Loudspeaker ports
are of large area dimension in order to minimize port non-linearity and turbulence effects.
The fifteen-inch transducer has a 4-inch (100 mm) diameter edgewound copper ribbon voice coil, 18
mm (0.71 in) peak excursion capability, diecast aluminum frame, massive vented magnet structure
and high thermal capacity that provides reduced power compression, long term reliability and low
distortion output.
The SB15P features internal digital signal processing electronics and a mono bridged power amplifier
that provides 1000 W continuous (1 kHz, 0.5% THD) into 8 ohms with thermal protection, short-
circuit/overload output protection and clip / RMS signal limiting. Integral digital signal processing
performs crossover filtering (100 Hz low pass filter) and system equalization for use of the SB15P in
conjunction with the 108P or 112P. Positive or negative polarity operation is selectable via rear-panel
push button switch.
When used with 108P or 112P enclosures in X-OVER mode, the SB15P should be operated with
positive polarity.
When used with 108P or 112P enclosures in FILL, FRONT or MONITOR mode, the SB15P
should be operated with negative polarity.
Connection to the SB15P is made via two parallel XLR connectors and gain is controllable via rear
panel potentiometer. AC power connectors are PowerCon type and 115V or 230V operation is
selectable via rear panel slider switch.
The enclosure is constructed of 18 mm (0.7 in) baltic birch and is internally braced with steel corner
plates and sealed, screwed, rabbeted joints in order to remain vibration-free at extreme sound
pressure levels. Dimensions are 445 mm (17.5 in) high, 520 mm (20.5 in) wide and 520 mm (20.5 in)
deep and the enclosure weight is 36 kg (79.4 lbs). Finish is maroon-gray high resilient paint and the
front of the enclosure is protected by a black powder-coated, 1.5 mm (0.06 in) thick steel grill,
covered with acoustically-transparent grille cloth.
Содержание 108P
Страница 1: ...Version 2 1 May 2007 L ACOUSTICS P SERIES 108P 112P SB15P OPERATOR MANUAL ...
Страница 31: ...L ACOUSTICS P Series Manual V2 1 7 12 2007 30 Figure 24 108P Line Drawing ...
Страница 32: ...L ACOUSTICS P Series Manual V2 1 7 12 2007 31 Figure 25 108P ETR8 2 Line Drawing ...
Страница 34: ...L ACOUSTICS P Series Manual V2 1 7 12 2007 33 Figure 26 112P Line Drawing ...
Страница 35: ...L ACOUSTICS P Series Manual V2 1 7 12 2007 34 Figure 27 112P ETR112XT Line Drawing ...
Страница 36: ...L ACOUSTICS P Series Manual V2 1 7 12 2007 35 Figure 28 112P XTLIFTBAR Line Drawing ...
Страница 38: ...L ACOUSTICS P Series Manual V2 1 7 12 2007 37 Figure 29 SB15P Line Drawing ...
Страница 39: ...L ACOUSTICS P Series Manual V2 1 7 12 2007 38 Figure 30 SB15P ETR15P Line Drawing ...
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