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DRIVE UNITS BY MANUFACTURER:
MSH-115
Monacor MSH-115, 4" hifi midrange drive unit.
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Good replacement for ELAC IMF 4/200 found in various IMF models such as TLS50, IMF Compact, Super-Compact & others.
Critically damped pulp cone gives a wide usable bandwidth with a text book response between 400-5000 Hz - excellent linearity, no significant peaks in the response.
The flat profile front chassis allows hassle free flush mounting - no need for a rebate or router.
This versatile driver can replace and upgrade a huge number of midrange units and offers a level of performance that is exceptional at this price.
A full datasheet can be downloaded from this page.
Basic parameters:
Resonant frequency (fs) | 85 Hz | Nominal impedance (Zn) | 8 Ω |
Mechanical Q factor (Qms) | 1.98 | DC resistance (Re) | 6.3 Ω |
Electrical Q factor (Qes) | 0.55 | Max power handling | 120W |
Total Q factor (Qts) | 0.43 | Sensitivity (2.83V/1m) | 89 dB |
Equivalent volume (Vas) | 4 L | Chassis (across flats) | 115 mm |
Here's the full datasheet:
MSH115
I bought a pair to replace aged mids in my IMF Studio Monitors...definitely an upgrade!
Thanks for the review Ross !
Will & Caroline
I replaced my midrange drivers in my IMF Studio TLS 50 Mk1 speakers that are 50 years old at present with these drivers. I am the original owner of these and I have to say after installing these drivers in both of the speakers I just love the results. I couldn’t be happier. They have brought my speakers back to life!
Thanks for the review Frank !
Will & Caroline
Excellent service , product and price A++
Thanks for the review Christiaan !
Will & Caroline
A while ago I revamped a pair of IMF Super Compact 2. The surrounds of the original ELAC mids were cracked and hardened (due to aging of the foam) which is typical for these old mids. I decided to look for a replacement and bought two of these Monacors. In my opinion the Monacor has a more detailled sound but its sensitivity is higher and you here it when it's not compensated for. Simply said; 'the mids are to loud'. It's specified at 89 dB/1W/1m and the average sensitivity of the old ELAC must be about 86 dB/1W/1m. So this issue had to be adressed. Measuring a speaker with the ELAC replaced by the Monacor using a standardized set-up (sw and pro measurement microphone) showed a higher average sensitivity of about 3,5 dB compared to the bass and high frequencies. So an L-pad has been used to attenuate the mids 'loudness'. Now this has been done, the result is great.
Kind regards,
Martin
Thankyou for your review !
Will & Caroline
Monacor 115 out performs anything else on the market at this price buy miles!!!! Super detailed midrange frequencies!! I've installed these into all my IMF TLS 50's and my TLS 50a's wide stereo sound stage!! Highly recommend them! superb! Pete
Thankyou for your review !
Will & Caroline
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Used in a DIY LS3/5a project, with Morel CAT 298 tweeters and custom crossovers using ClarityCap CSAs. Super pleased with these woofers! I think they synergize well with the “live” thin-wall LS3/5a cabinets. The sound is neither bloated, nor thin, just revealing, spacious, and with very lifelike tone. I’m so happy with the results of this project and had a great buying experience with Willy’s. Thank you!!
I used this in custom LS3/5a speaker enclosures along with Monacor SPH-135AD woofers and custom crossovers using ClarityCap CSAs. The tweeters have a very pure sound, revealing microdetails and having a naturally smooth, response. The sound is never peaky or rough. I’m very happy with my purchase and with the service from Willys. Would buy from again for a future project!
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.
Absolutely first class service again brilliant advice as i always get from Will. Bought some Morel CAT 328-110 Tweeters and they sound sublime and the detail is incredible. Not harsh at all and very airy performs well beyond its price point im so glad Will advised me on this as the perfomance is fantastic. In fact Will has saved me thousands as replacing drivers has saved me investing in new speakers first class service once again.
Very happy customer thansk again.
Up and running again exactly what I needed. Great job Willys. 10/10👊🏻🫵🏻. From start to finish will be use again in near future for crossover upgrade. 1st time using. 100% will use again