DRIVE UNITS BY MANUFACTURER:
SPH-165CP
Categories: 6-8 inch Bass / Midrange Speakers Monacor Drive Units
DISCONTINUED BY MANUFACTURER.
This 6.5 inch unit features include a damped woven carbon fibre cone, a soft butyl rubber surround, a powerful 120mm ferrite magnet system, a rigid diecast chassis and a vented pole piece. This long throw design has a smooth frequency response with very good bass extension - 30Hz is achievable from cabinets of around 18 litres.
| Resonant frequency (fs) | 30 Hz | Nominal impedance (Zn) | 8 Ω |
| Mechanical Q factor (Qms) | 4.85 |
DC resistance (Re) | 6.3 Ω |
| Electrical Q factor (Qes) | 0.33 | Max power handling | 120W |
| Total Q factor (Qts) | 0.31 | Sensitivity (2.83V/1m) | 89 dB |
| Equivalent volume (Vas) | 38L | Chassis diameter (pincushion style) |
165 mm |
SPH165CP
I purchased a pair of these last year to repair my Castle Avon speakers than had a failed driver. These drop straight in to the original mounting holes and don’t require any fettling. There is a slight gap as they don’t quite fill the original space but with the grilles on you wouldn’t know. I expect you could 3D print some surrounding trim if you wanted to. They sound great, a bit more punch than the originals. I’ve got them paired with some Sony separates and a Rega Turntable. They really sing with a decent CD player. Fantastic service from Willys Hifi. Great price, well packaged and quick dispatch. Even included a handwritten note! Thanks!
Thanks for the review Jonathan - enjoy the music !
Will & Caroline
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
I tried this uprated capacitor through sheer curiosity and am pleasantly surprised with the results. So far, and not too many hours in, it’s giving a slightly smoother edge to the top end and has solved an issue I had regarding some hardness to the sound. I’m impressed enough that I’ll look to replace the mid range caps in the future.
I came across some info that after many years these old B&W P4's tweeters degrade. As I grew older, (with reduced hearing of course), I never noticed this gradually deterioration over the years. So I bought the replacement tweeters from Willy's which was picked up just a few days later in Norway. They were mounted in 30 minutes,.. and what a change! My HiFi sounds as a new set. Thanks!
New Foam covers supplies by WHF have completely changed the appearance- they look brand new! Great quality foam, very reasonably priced and quick delivery. Delighted with they now look and sound - will hang on to them forever now.
Excellent upgrade, works perfectly with the speakers it's just soldier and play, they takeaway the over intensity of the original tweeters.
I've had my Mission 734s for about 30 years and for the last five or so the bass units have been falling to pieces. I was about to take the speakers to the tip, but didn't have the heart knowing how capable these used to be. I did a little internet research and these Monacor replacements appeared to do the job. Next day delivery from Willys was impressive, as was the killer sound once the replacements were fitted (which was a simple job). I'd forgotten how these speakers make the windows rattle. Very happy customer!
