"Free-air" bass speaker SP-167C

On-board Hi-Fi subwoofers for free air use. Reinforced pressed paper membrane, specific suspension with long travel. With reworked magnetic systems for an even greater power, rear pole plate for an exceptionally large displacement capacity.

150W Woofer_MAX, 4 Ω

6½ "bass speaker, pressed diaphragm As a complement to" free air "mounting (without housing) in compact vehicles, remodeled product with lower positioning of polarity elements for greater travel.

With the new parameters, which are translated primarily by a greatly improved Qts, these speakers can now be recommended for closed enclosures or even large bass-reflex speakers.

Specifications Speakers
	Impedance (Z)		4 Ω
	Bandwidth		58-5500 Hz
	Resonance frequency (fs)		49 Hz
	Cut-off frequency (12 dB / oct) (fmax)		3000 Hz
	Peak Current		150 W
	Nominal power		50 WRMS
	Average sound pressure (1 W / 1 m)		91 dB
	Cms Compliance susp		0.84 mm / N
	Mms Mobile ground		12 g
	Qms Mechanical overvoltage.		2.89
	Electrical Overvoltage		0.45
	Qts Fact. total surge		0.39
	Equivalent volume (Vas)		22 l
	RDC Resistance DC (Re)		3.7 Ω
	Inductance coil (1 kHz) (Le)		0.2 mH
	Coil diameter		25 mm
	Coil support		Alu
	Height gap		4 mm
	Force factor B x L		5.6 Tm
	Transmitting surface (Sd)		137 cm2
	Magnet diameter		100 mm
	Magnet weight		20 oz.
	cutting		Ø 148 mm
	Mounting depth		80 mm
	dimensions		Ø 170 mm
	Weight		1.15 kg