HiFi-Woofer by Number One

SSP £91.25


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Item Information

Originals Made in Germany:A design which has become classic by now and materials which seem to be basic but which are perfectly manufactured - thus an excellent sound is created!Super HiFi bass speaker, 250WMAX, 8Ω Paper cone with special coating, a sheet steel basket with optimised compression, perfect mass-drive ratio, a bass speaker of long excursion for the HiFi range of high requirements.
Packed Quantity
1 per pack
Manufacturer Number

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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.

Returns & Refunds

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)
Resonant frequency (fs)23Hz
Max. frequency range f3-2,500Hz
Rec. crossover freq. (fmax.)2,000Hz
Music power 250WMAX
Power rating (P) 125WRMS
SPL (1W/1m)91dB
Suspension compl. (Cms)1.31mm/N
Moving mass (Mms)36.5g
Mech. resistance (Rms)2.7kg/s
Mech. Q factor (Qms)1.95
Electr. Q factor (Qes)0.32
Total Q factor (Qts)0.27
Equivalent volume (Vas)199 l
DC resistance (Re)6.2Ω
Voice coil induct. (Le)0.9mH
Voice coil diameter50mm
Voice coil formeraluminium
Voice coil winding height19mm
Air gap height8mm
Linear excursion (XMAX)±5.5mm
Eff. cone area (Sd)325cm2
Volume displacement (Vd)178.8cm3
Force factor (BxL)10.1Tm
Reference efficiency (No)0.7%
Magnet diameter120mm
Magnet weight 30oz.
Mounting cutout Ø 246mm
Mounting depth 117mm
Weight 3.1kg
Rec. net cabinet volume 
  Closed35 l
  Bass-reflex70 l