DRIVE UNITS BY MANUFACTURER:
23W/4557T02
Categories: 10-15 inch Bass Speakers Scanspeak Subwoofers
UK STOCK ITEM.
TO BE DISCONTINUED BY SCANSPEAK.
Premium quality sub woofer with rigid anodised alloy cone offering excellent transient accuracy and bass power. Ideal for top quality domestic sub bass or in-car applications. A 'little beast' capable of high SPLs.
Top notch construction with a heavy duty alloy chassis. Extended pistonic action ensures a well controlled response curve. Huge total excursion of 40mm.
Connection by solder tag or binding posts. 4 Ohm impedance.
Black anodised cone - silver cone version here: 23W/4557T00
Resonant frequency (fs) | 21 Hz | Nominal impedance (Zn) | 4 Ω |
Mechanical Q factor (Qms) | 4.80 | DC resistance (Re) | 3.45 Ω |
Electrical Q factor (Qes) | 0.52 | RMS power handling | 225 W |
Total Q factor (Qts) | 0.47 | Sensitivity (2.83V/1m) | 82 dB |
Equivalent volume (Vas) | 45L | Chassis diameter | 255 mm |
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
Been looking for a supplier of replacement drivers for some years.
Willy's HiFi had just the parts at a good price and they arrived in a couple of days.
Excellent service. Even a personal thank you hand written on the invoice.
A quick delivery and the tweeters are perfect on my mission 753 freedom speakers. Easy to fit . Highly recommend.
I’m no expert when it comes to speakers, but after some research (and a strong recommendation from ChatGPT), I went with the SB Acoustics SB65WBAC25-4 as a reference full-range speaker in this size range.
Having now tested them, I can confidently say they’re probably the best speakers I’ve ever owned. The clarity is outstanding—every detail comes through with incredible precision. The bass is surprisingly full and punchy for a speaker this size, and they handle power impressively well. For anyone looking for a high-performance compact full-range driver, these are hard to beat.
Item as described and arrived quickly - and did the job. However, I suggested that anyone replacing speaker foam makes sure they have a very large pair of sharp dressmaking scissors as it was not easy cutting to size without producing a ragged edge (which I managed to hide short of a close inspection)!