All systems go !
All systems go !
DRIVE UNITS BY MANUFACTURER:
SPH-8M
UK STOCK ITEM
Excellent value replacement for a huge number of 8" woofers including: Mission, Castle, Acoustic Research, Mordaunt Short, Spendor, Wharfedale, B&W and many others.
Dampened low-resonance polypropylene cone.
Robust smooth cast alloy chassis with 6 mounting holes.
Drilled pole core and large high efficiency magnet.
Very Linear frequency response.
Suitable for both reflex & infinite baffle designs.
We also stock a 5 inch version of this driver (SPH-5M) and a 6 inch version (SPH-6M).
| Resonant frequency (fs) | 35 Hz | Nominal impedance (Zn) | 8 Ω |
| Mechanical Q factor (Qms) | 2.26 | DC resistance (Re) | 6.5 Ω |
| Electrical Q factor (Qes) | 0.50 | Max power handling | 150W |
| Total Q factor (Qts) | 0.41 | Sensitivity (2.83V/1m) | 89 dB |
| Equivalent volume (Vas) | 44L | Chassis diameter | 222 mm |
SPH8M
I bought a pair of Acoustic Research AR28LS speakers back in 1985 for £129 ! After about 15 years the foam suspension had started to perish and completely failed in 2006 following a rather loud teenage party. I was never happy with the Eminence Beta-8A replacements bought from a local shop at the time, as the bass resonance was far too high. Finally decided to replace them with Monacor SPH-8M and the speakers now sound as good as new. Arrived quickly and no problems fitting. Many thanks.
Thanks for the review Pete. I remember selling the AR28LS when working for 'Hifi Markets' many moons ago - like the smaller AR18S but with some bass !
Will
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
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!
