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
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)!