DRIVE UNITS BY MANUFACTURER:
18WU/8747T00
Categories: 6-8 inch Bass / Midrange Speakers Scanspeak Woofers
This 18cm 8 ohm woofer is the product of many years research at Scanspeak R&D, Videbaek, Denmark and brings together many advancements.
Featuring a unique airflow optimised open chassis and underhung Neodymium SD-3 magnet system, this woofer is free from compression & reflection effects, resulting in highly accurate reproduction. With a rigid aluminium alloy cone, copper capped pole piece & huge linear excursion, this audiophile quality driver operates as a pure piston delivering highly accurate bass reproduction with great authority, extension and texture.
We believe this is possibly the finest 18cm dedicated woofer available. There is a full datasheet at the bottom of this page for download.
Available in 4 and 8 ohms.
This woofer is 8 Ohms ; the 4 Ohm version is here : 18WU/4747T00
Resonant frequency (fs) | 33 Hz | Nominal impedance (Zn) | 8 Ω |
Mechanical Q factor (Qms) | 3.31 | DC resistance (Re) | 5.9 Ω |
Electrical Q factor (Qes) | 0.35 | RMS power handling | 80 W |
Total Q factor (Qts) | 0.32 | Sensitivity (2.83V/1m) | 85.5 dB |
Equivalent volume (Vas) | 48.3L | Chassis diameter | 184 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)!