HiFi-Woofer by Number One


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Item Information

HiFi subwoofer, 2 x 300WMAX, 2 x 8Ω High-power speaker with dual voice coil in a stable sheet steel basket with carbonised PP cone, capable of very great linear excursion, parameters for extra powerful and deep bass reproductions in bass-reflex cabinets.
Packed Quantity
1 per pack
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Delivery Information

For UK orders we offer a Free Delivery, Standard or Next Working Day delivery service.

We have separate delivery charges for Europe, North America, Japan and the Rest of the World based on the size, weight and destination of your order.

Please view our About Delivery page for full details.

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If an item is faulty or damaged on delivery and we are notified within 24 hours we will arrange for a replacement or a refund of the item - it needs to be within this time period for us to make claims with our couriers.

If you have simply changed your mind or no longer require the item(s), you must notify us within 7 days from receiving your order. The item(s) must be in their original unused and unopened packaging and be in a resalable condition for a full refund. You will need to pay for the cost of returning the item(s) and the item(s) remain your responsibility until we receive them.

Please view our Returns & Refunds page for full details.

Full Details

Impedance (Z) 2 x 8Ω
Resonant frequency (fs)23Hz
Max. frequency range f3-1,500Hz
Rec. crossover freq. (fmax.)500Hz
Music power 2 x 300WMAX
Power rating (P) 2 x 150WRMS
SPL (1W/1m)96dB
Suspension compl. (Cms)0.3mm/N
Moving mass (Mms)160g
Mech. resistance (Rms)3.1kg/s
Mech. Q factor (Qms)6.36
Electr. Q factor (Qes)0.29
Total Q factor (Qts)0.26
Equivalent volume (Vas)284 l
DC resistance (Re)2 x 6Ω/ 3Ω
Voice coil induct. (Le)2 x 1.3mH/1.3mH
Voice coil diameter65.5mm
Voice coil formerKapton
Voice coil winding height22mm
Air gap height8mm
Linear excursion (XMAX)±7mm
Eff. cone area (Sd)850cm2
Volume displacement (Vd)595cm3
Force factor (BxL)16.72Tm
Reference efficiency (No)1.36%
Magnet diameter182mm
Magnet weight 65oz.
Mounting cutout Ø 353mm
Mounting depth 153mm
DimensionsØ 385mm
Weight 7.5kg
Rec. net cabinet volume 
  Closed70 l
  Bass-reflex100 l