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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. Price from -
£55.00 per pair excl. VAT


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

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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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A demonstration room is available 
at our premises for you to listen
to a selection of our loudspeakers.

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

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Friday
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Home > Drive Units > Bass-mid & Bass Units > SCANSPEAK

S/S Revelator 23W 4557T02 Diameter:255mm

Black Aluminium Cone Mid/Bass

The 23W 4557T02 produces a clean, dynamic natural sound with low distortion and a good transient response.

The ultra long throw voice coil uses aluminium wire wound onto a paper reinforced Kapton former along with Scanspeak's patent diecast aluminium chassis, allows the 23W to produce a bass response of unusual depth and precision.

Technical Data:

Frame diameter:    255mm

Sensitivity (2.83v/1m):   82dB

Nominal impedance:   4 ohm

Frequency range:   21Hz - 500Hz

Free air resonance:   21Hz

DC resistance (Re):   3.45 ohm

Voice coil inductance (Le):   0.45mH

Effective piston area (Sd):   232cm²

Moving Mass (Md):   101g

Force factor (BL):   9.3Tm

Excursion (lin-max):   +/-13mm : +/-20mm

Qms:   4.8

Qes:   0.52

Qts:   0.47

Vas:   45.6L

Voice coil diameter:   50mm

Nominal power handling:   225w

Physical Sizes:

Frame diameter:   255mm

Overall depth (front of frame to rear of magnet):   142mm

Flange thickness:   6mm

Fixing holes:   10 x 5.3mm diameter on 210mm PCD (not equally spaced)

Cutout diameter:   240mm


Price per single unit excluding VAT



Price: £300.00

S/S Revelator 23W 4557T02 Diameter:255mm

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