Our subwoofer B15 is a real multi­ talent. The bass­reflex system equipped with 1x 15“ driver is especially suited as a passive bass extension for all our M­-series speakers. Due to the speaker chassis specifically developed and optimised for this application we achieve outstanding bass response in spite of the com­ pact design. The fall­off in efficien­ cy of the LF­driver to the higher frequencies causes a soft filtering of mid­high frequencies with the lowest possible phase­shift when combined with the optional passive crossover PWB15.
Because of this the subwoofer can be connected in parallel with fullrange speakers without additional ampli­fiers or system controllers without problems. The fullrange system is strongly supported in the low frequency range while staying almost unchanged in the midrange.
The highpass output of the passive crossover PWB15, tuned specifically to the M8, relieves the satellite speaker and lets the combination sound extremely homogenous.

Another advantage: caused by the speaker impedances of a passive combination of the B15 with one M12 or M15 fullrange speaker, the amplifier power is divided into two thirds to the subwoofer and one third to the top. This does not only relieve the fullrange system but also pro­ motes balanced playback of music. Again and again and again...

• Technical Data
• Supplies

Drivers	1 x 15“ LF
Frequency range	40 - 1500 Hz
Power capacity programm/peak:	1200 / 2000 W
Impedance	4 Ohm (2,5 ohms in passive mode with M8 at highpass output)
Sensitivity 1 W / 1m	94 dB biamped HF
SPLmax / 1m	127 dB
Connectors	2 Speakon NL4
Dimensions (h x w x d)	506 x 440 x 560 mm
Weight	23 kg / 24 kg with passive crossover
Finish	Warnex structure paint
Accessories	FDB15, CoverB15
Options	PWB15 internal passive crossover, switchable between active and passive mode, switchable highpass- output for 8 ohms satellite speaker, RAL colours

	CoverB15 Protective cover professional B15 Protective cover professional version made of black polyester with inner foam to cover B15 when trans- ported on FDB15
	FDB15 Dolly to mount on B15 front Dolly to mount on B15 front, four 100 mm Swivel castors, thereof two with brakes, two butterfly-catches, two carrying handles, dimensions 500 x 440 x 138 mm, weight 5.5 kg
	PWB15 Passive option for B15 Passive option for B15, internal passive crossover with switchable high- and low-pass filters to operate B15 with M8 / M12 / M15 in passive mode at one amplifier channel, when operated with M8 at high-pass output nominal impedance is 2.5 ohms, weight 1.6 kg
	SK05X10 Package with 10 pcs. shackles with 0.5 t WLL Package with 10 pcs. shackles with 0.5 t WLL
	SK10X10 Package with 10 pcs. shackles with 1 t WLL Package with 10 pcs. shackles with 1 t WLL
	SK20X10 Package with 10 pcs. shackles with 2 t WLL Package with 10 pcs. shackles with 2 t WLL
	ZG25-1 Lashing strap black one-piece Lashing strap black one-piece, 25 mm width, length 1 m, 400 kg nominal load capacity
	ZG25-2 Lashing strap black one-piece Lashing strap black one-piece, 25 mm width, length 2 m, 400 kg nominal load capacity
	ZG25-5 Lashing strap black one-piece Lashing strap black one-piece, 25 mm width, length 5 m, 400 kg nominal load capacity