HiFi-Midrange Speake by Number One

SSP £39.99


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Item Information

HiFi bass-midrange speaker, 80WMAX, 8Ω Paper cone with special coating, rubber surround with optimised profile, very wide bandwidth radiation free of resonance, suitable for 2-way combinations of miniature full range speaker systems of highest quality up to D´Appolito arrangements.
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)
Resonant frequency (fs)65Hz
Max. frequency range f3-8,000Hz
Rec. crossover freq. (fmax.)4,500Hz
Music power 80WMAX
Power rating (P) 50WRMS
SPL (1W/1m)87dB
Suspension compl. (Cms)1.33mm/N
Moving mass (Mms)4.5g
Mech. resistance (Rms)0.8kg/s
Mech. Q factor (Qms)2.23
Electr. Q factor (Qes)0.47
Total Q factor (Qts)0.39
Equivalent volume (Vas)5.5 l
DC resistance (Re)5.8Ω
Voice coil induct. (Le)0.3mH
Voice coil diameter25mm
Voice coil formeraluminium
Voice coil winding height9mm
Air gap height6mm
Linear excursion (XMAX)±1.5mm
Eff. cone area (Sd)55cm2
Volume displacement (Vd)8.3cm3
Force factor (BxL)4.8Tm
Reference efficiency (No)0.3%
Magnet diameter72mm
Magnet weight 8oz.
Mounting cutout Ø 101mm
Mounting depth 58mm
Weight 0.65kg
Rec. net cabinet volume 
  Closed2.5 l
  Bass-reflex5.5 l