SHIPPING TO USA TEMPORARILY SUSPENDED
SHIPPING TO USA TEMPORARILY SUSPENDED
DRIVE UNITS BY MANUFACTURER:
18W / 8531G00
UK STOCK ITEM
The Revelator 18W series of drivers continue the enviable trend set by the smaller 15W versions. There's a few variants and different impedances - they are all excellent. This version is available in 4 and 8 Ohms. A full datasheet is available for download at the bottom of this page.
Popular among high end & esoteric designers - and with very good reason.
Featuring a unique cone that is precision sliced then re-bonded with damping glue; this procedure gives a very high level of internal damping and control that is not normally obtainable with a standard type cone.
These no compromise drive units offer superlative sound quality with outstanding midrange resolution and solid bass extension.
This woofer is 8 Ohms ; the 4 Ohm version is here : 18W/4531G00
Resonant frequency (fs) | 28 Hz | Nominal impedance (Zn) | 8 Ω |
Mechanical Q factor (Qms) | 5.10 | DC resistance (Re) | 5.8 Ω |
Electrical Q factor (Qes) | 0.39 | RMS power handling | 60 W |
Total Q factor (Qts) | 0.36 | Sensitivity (2.83V/1m) | 87 dB |
Equivalent volume (Vas) | 58.2L | Chassis diameter | 182.2 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)!