HiFi-Woofer With Twi by Number One

SSP £79.99


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Item Information

HiFi bass speaker and subwoofer, 2 x 100WMAX, 2 x 8Ω A dual voice coil bass speaker with diecast basket and carbon fibre cone, of very high power capability in very small cabinets, an ideal bass speaker for subwoofer applications of high requirements, if little space is available only.
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.

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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) 2 x 8Ω
Resonant frequency (fs)22Hz
Max. frequency range f3-4,000Hz
Rec. crossover freq. (fmax.)3,500Hz
Music power 2 x 100WMAX
Power rating (P) 2 x 60WRMS
SPL (1W/1m)88dB
Suspension compl. (Cms)1.16mm/N
Moving mass (Mms)45g
Mech. resistance (Rms)1.1kg/s
Mech. Q factor (Qms)4.91
Electr. Q factor (Qes)0.23
Total Q factor (Qts)0.22
Equivalent volume (Vas)75 l
DC resistance (Re)2 x 6.8Ω/ 3.4Ω
Voice coil induct. (Le)2 x 1.0mH/ 1.0mH
Voice coil diameter50mm
Voice coil formerKapton
Voice coil winding height15.5mm
Air gap height8mm
Linear excursion (XMAX)±3.75mm
Eff. cone area (Sd)214cm2
Volume displacement (Vd)80.3cm3
Force factor (BxL)9Tm
Reference efficiency (No)0.5%
Magnet diameter120mm
Magnet weight 29.5oz.
Mounting cutout Ø 181mm
Mounting depth 115mm
DimensionsØ 211mm
Weight 2.8kg
Rec. net cabinet volume 
  Bass-reflex20 l