SHIPPING TO USA TEMPORARILY SUSPENDED
SHIPPING TO USA TEMPORARILY SUSPENDED
DRIVE UNITS BY MANUFACTURER:
S220-6-222
Categories: 8-10 inch Bass Speakers Accuton Drive Units - All
The Accuton S220-6-222 is an esoteric 8.5 inch (220mm) bass drive unit primarily intended for medium size 3 way floor standing speakers and studio monitors of the highest quality.
This high end driver features an ultra stiff ceramic sandwich cone with a soft rubber long throw surround. The large Neodymium magnet and 55mm titanium former yield very low distortion levels whilst maintaining a high sensitivity of 92.5 dB.
The spider, pole and voice coil former are fully ventilated for minimal compression. This driver has a substantial power rating of 150 watts and offers pure, accurate transients with good weight and control.
Full datasheets can be downloaded from the bottom of this page.
Vented:
Vb: 30L, Fres: 23Hz with passive radiator, -12dB @ 25Hz, Q: 0.47 (optimal A/V alignment)
Vb: 25L, Port diameter: 70mm, Length: 230mm, Fres: 40Hz, F-3dB: 43Hz, Q: 0.50
Vb: 40L, Port diameter: 70mm, Length: 155mm, Fres: 37Hz, F-3dB: 37Hz, Q: 0.43 (extended bass)
Infinite baffle:
Vb: 12L, -11dB @ 40Hz, F-3dB: 69Hz, Q: 0.71 (typical)
Vb: 25L, -8dB @ 40Hz, F-3dB: 70Hz, Q: 0.50 (extended bass)
Resonant frequency (fs) | 21Hz | DC resistance (Re) | 6.7Ω |
Mechanical Q factor (Qms) | 4.4 | Power handling | 150W |
Electrical Q factor (Qes) | 0.21 | Sensitivity (2.83V/1m) | 92.5dB |
Total Q factor (Qts) | 0.20 | Chassis diameter | 220mm |
Equivalent volume (Vas) | 139L | Cutout diameter | 191mm |
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I always knew that Linn should never have stopped using Hiquphon tweeters. What I don't know is why it's taken me thirty years to fit a pair in my old Kabers. It's often hard to describe sonic character ....but to pinch Linn's old line from back in the day ...they're Simply Better.(even straight out the box with soldering iron still warm)
As my Kabers are passive,I had been a little concerned that the the 8 ohm nominal impedence of the OW1 would mess with the crossover slope. I needn't have worried....if its shifted the crossover point its much for the better.
Warm thanks also to Will and Caroline for a service in keeping with the outstanding quality of the Hiquphon product.
Alan
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.