All systems go !
All systems go !
DRIVE UNITS BY MANUFACTURER:
C158-8-085

UK STOCK ITEM
The Accuton C158-8-085 Bass / Midrange driver is a development of the C158-6-851 with a slightly different design criteria : a revised motor system comprising of a light weight 25mm voice coil and titanium former assembly give improvements to both midrange resolution and extension plus a mild increase in sensitivity.
Designed specifically for small monitors and slim floor standing designs, this esoteric unit has a soft rubber suspension, an ultra hard 120mm ceramic (Sapphire) cone and a large 10mm maximum excursion allowing it to produce impressive volume levels from small footprint enclosures.
The spider, pole and voice coil former are fully ventilated for minimal compression. This 8 ohm unit has a power rating of 100 watts - very respectable for a domestic driver of this size.
Full datasheets can be downloaded from the bottom of this page.
Vented:
Vb: 15L, Port diameter: 50mm, Length: 190mm, Fres: 41Hz, F-3dB: 45Hz, Q: 0.58
Vb: 22L, Port diameter: 50mm, Length: 130mm, Fres: 40Hz, F-3dB: 40Hz, Q: 0.50
Vb: 12L, Port diameter: 50mm, Length: 200mm, Fres: 45Hz, F-3dB: 49Hz, Q: 0.61
Infinite baffle:
Vb: 8.5L, -11dB @ 40Hz, F-3dB: 70Hz, Q: 0.71
Vb: 22L, -8.5dB @ 40Hz, F-3dB: 70Hz, Q: 0.50
| Resonant frequency (fs) | 33Hz | DC resistance (Re) | 7.8Ω |
| Mechanical Q factor (Qms) | 4.12 | Power handling | 100W |
| Electrical Q factor (Qes) | 0.34 | Sensitivity (2.83V/1m) | 89dB |
| Total Q factor (Qts) | 0.31 | Chassis diameter | 158mm |
| Equivalent volume (Vas) | 35L | Cutout diameter | 137mm |
Click icons to download :
Built to order - contact us for a lead time.
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40+ years in the trade
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Quick dispatch
Product as described, easy to cut & fit.
On reflection having now fitted the foam, I wish it was 15mm to 18mm or even 20mm thick. This is not a complaint. For a small speaker under 30cm high it’s perfect. For a larger speaker I feel a thicker sponge would hold its structure more pleasingly, its aesthetics, but important for the finished look.
I’ve been building my own home cinema as a complete DIY project and reached the stage where I needed some decent acoustic foam for my speaker panels (also DIY!) so I picked up 3 large sheets from here. They were sent quickly, packed well and moreover, are of excellent quality. With them being folded into the shipping box they were slightly creased but after leaving them out overnight on a flat surface, the creases fell out completely. They’re now in place and doing their job brilliantly. Cheers Willys Hifi!
The crossover was constructed well, I just need to figure out the best way to attach it to my Kef Concertos as they are bigger than the ones supplied by Kef that are mounted on the front of the baffle board.
Very nice deep bass look amazing with my custom made speaker
Great speedy delivery and very easy to fit. The plastic in my drivers had perished and they had suffered one too many parties! No need to make any adjustments (someone above did suggest that). I just screwed them in and the foam compressed into place. Before and after below (before I changed speaker number 2). Thank you!
