DRIVE UNITS BY MANUFACTURER:
SB23CACS45-4
Categories: 8-10 inch Bass Speakers SB Acoustics Woofers
The SB Acoustics SB23CACS45-4 is a 8 inch 4 ohm woofer / bass speaker featuring a geometrically reinforced ceramic cone, a low distortion motor system and a vented cast aluminium chassis. The ceramic layer is bonded to an aluminium substrate, this combination of materials results in an excellent stiffness to damping ratio. A very low distortion design for applications with restricted rear depth.
Also available in 8 ohms: SB23CACS45-8.
Resonant frequency (fs) | 23 Hz | Nominal impedance (Zn) | 4 Ω |
Mechanical Q factor (Qms) | 6.0 |
DC resistance (Re) | 3.3 Ω |
Electrical Q factor (Qes) | 0.35 |
Max power handling | 60 W |
Total Q factor (Qts) | 0.33 |
Sensitivity (2.83V/1m) |
90dB |
Equivalent volume (Vas) | 95L | Chassis diameter |
234mm |
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)!