HiFi-Woofer With Twi by Number One

5 out of 5 stars 5 out of 5 from 1 Review

SSP £35.99


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Item Information

HiFi bass-midrange speaker, 2 x 60WMAX, 2 x 8Ω Dual voice coil and polypropylene cone with good midrange attenuation, suitable for both very small subwoofers and high-power 2-way speaker systems.Klang+Ton 6/00 "A real big hit for that price!"
Packed Quantity
1 per pack
Manufacturer Number

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Customer Reviews

Write your own review of HiFi-Woofer With Twi.

Great product 5 stars 5 out of 5

Bought this woofer to replace one in a Whafedale 2.1 system subwoofer. Looks so much more substantial.
Needed to make an adaptor as the mounting holes where closer than the original for the same size cone - the discription doesn't show the hole centrers for the fixings

Delivery took longer than stated in the order confirmation

06 Nov 2013 by Neil

Questions & Answers

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) 2 x 8Ω
Resonant frequency (fs)33Hz
Max. frequency range f3-5,000Hz
Rec. crossover freq. (fmax.)3,000Hz
Music power 2 x 60WMAX
Power rating (P) 2 x 40WRMS
SPL (1W/1m)88dB
Suspension compl. (Cms)1.38mm/N
Moving mass (Mms)16g
Mech. resistance (Rms)1.1kg/s
Mech. Q factor (Qms)2.98
Electr. Q factor (Qes)0.48
Total Q factor (Qts)0.41
Equivalent volume (Vas)31 l
DC resistance (Re)2 x 7.5Ω/ 3.8Ω
Voice coil induct. (Le)2 x 0.6mH/ 0.6mH
Voice coil diameter25.5mm
Voice coil formerKapton
Voice coil winding height10.5mm
Air gap height6mm
Linear excursion (XMAX)±2.25mm
Eff. cone area (Sd)127cm2
Volume displacement (Vd)28.6cm3
Force factor (BxL)5.2Tm
Reference efficiency (No)0.2%
Magnet diameter100mm
Magnet weight 13.3oz.
Mounting cutout Ø 142mm
Mounting depth 82mm
DimensionsØ 166mm
Weight 1.4kg
Rec. net cabinet volume 
  Closed16 l
  Bass-reflex36 l