DRIVE UNITS BY MANUFACTURER:
SPH-5M
Categories: 5-6 inch Bass / Midrange Speakers Monacor Drive Units
Good replacement for TDL Studio 0.5.
Dampened low-resonance polypropylene cone.
Robust smooth cast alloy chassis with 6 mounting holes.
Drilled pole core and large high efficiency magnet.
For general applications in compact bass-reflex, TML and infinite baffle designs.
Can also be used as a fine midrange unit in 3-way speaker systems.
These work very well in transmission line enclosures.
We also stock an 8 inch version of this driver: Monacor SPH-8M
Resonant frequency (fs) | 45 Hz | Nominal impedance (Zn) | 8 Ω |
Mechanical Q factor (Qms) | 2.89 | DC resistance (Re) | 6.3 Ω |
Electrical Q factor (Qes) | 0.47 | Max power handling | 80W |
Total Q factor (Qts) | 0.41 | Sensitivity (2.83V/1m) | 88 dB |
Equivalent volume (Vas) | 13.47L | Chassis diameter | 150 mm |
SPH5M
Replaced faulty Studio 0.5 drivers with these. Had a wobble about the fit so called to confirm details and had superb advice. Recommend both the drivers and Willy's!
Thanks for the review Mark - The TDL Studio 0.5 is a great classic speaker !
Will & Caroline
This is a great driver for a transmission line or tapered pipe design. Good quality, if basic, chassis - nice and rigid with a chunky magnet. Nice smooth midrange making it easy to integrate with a range of HF units. I used the Fountek NeoX1.0 Ribbon Tweeter which is similarly an impressive unit. A good combination.
Thankyou for your review !
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)!