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ATC SM75-150 - There is now less than a week left to order this iconic      midrange, plus any of our kits that currently use it.                         

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Loudspeaker repairs



Let us bring your loudspeakers
back to life by giving them a full
"MOT" using our repair and
upgrade services


Why not replace your crumbling foam
fronts with tailor-made cloth covered
wooden grille frames

Bespoke Cabinets



Let us help you design unique
bespoke cabinets for
your loudspeakers.

Our cabinet-maker can produce
individually designed cabinets to a
high quality furniture finish.

20% Cancellation fee on
made-to-order products.

If you decide to cancel your
made-to-order speaker for any reason,
it is unlikely that we could sell it to 
another customer at full selling price.
We will therefore charge a
cancellation fee of 20%
of the order price.

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to our range of loudspeakers.

You are welcome to bring your own
source equipment in order to replicate
your usual listening conditions   

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Home > Drive Units > Midrange Units > SCANSPEAK

S/S Classic 13M 8640 Diameter:130mm

Paper Cone Midrange

A classic Scanspeak midrange, producing a rich, natural full-bodied sound, which is detailed and clean. The impregnated cone is hand coated with a special material to achieve high resolution, better reproduction and dynamic linearity. 

The 13M 8640 is built onto a heavy diecast magnesium chassis to ensure stability and low resonance.

Ideal for use in any high quality 3-way systems and our recommended upgrade to the KEF B110, or for replacing other midrange units, where natural, smooth and high quality sound reproduction is required.

Technical Data:

Frame diameter:    130mm

Sensitivity (2.83v/1m):   88dB

Nominal impedance:   8 ohm

Frequency range:   300Hz - 8000Hz

Free air resonance:   58Hz

DC resistance (Re):   5.8 ohm

Voice coil inductance (Le):   0.1mH

Effective piston area (Sd):   48.0cm²

Moving Mass (Md):   4.1g

Force factor (BL):   4.6Tm

Excursion (lin-max):   +/-1.5mm : +/-5mm

Qms:   2.7

Qes:   0.27

Qts:   0.24

Vas:   5L

Voice coil diameter:   38mm

Nominal power handling:   100w

Physical Sizes:

Frame diameter:   130mm

Overall depth (front of frame to rear of magnet):   54mm

Flange thickness:   6mm

Fixing holes:   3 x 3.5mm diameter on 120mm PCD

Cutout diameter:   102mm


Price per single unit excluding VAT



Price: £140.00

S/S Classic 13M 8640 Diameter:130mm

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