SPM-165/8
A good replacement for the 73-LF58W as found in Mission 732, 733, 733i, 734, 735 + many other models.
This 6.5 inch unit features a damped pulp cone, a powerful 80mm ferrite magnet system and a rugged steel chassis. The frequency response is smooth with good midrange control and extension. An ideal replacement unit for many speakers.
| Resonant frequency (fs) | 49 Hz | Nominal impedance (Zn) | 8 Ω |
| Mechanical Q factor (Qms) | 2.70 | DC resistance (Re) | 6.5 Ω |
| Electrical Q factor (Qes) | 0.67 | Max power handling | 150W |
| Total Q factor (Qts) | 0.55 | Sensitivity (2.83V/1m) | 88 dB |
| Equivalent volume (Vas) | 33L | Chassis (pincushion style) |
159 mm |
Very happy with this replacement part, especially once id fitted it correctly!! Sounds great so know where to go when the other one fails. 👍
Thanks for the review Liam !
Will & Caroline
These are some for restoration (as are my 735i's that I've had another six of these Monacore mid-woofers sat for too long now...about to do both at last!) so hope they sound great?! The original Mission speakers were some kind of opaque polymer & had suffered some horrible degradation due to time & UV & were un-useable as a result.
The Monacore ones look to be a more traditional card type material cone & their weight seems very comparable to the Mission originals.
A small drawback I've noticed are the mounting holes being in a different position but have bought appropriate screws & some butyl rubber strips, just mark & drill some pilot holes in the cabinets & all should be good, can't wait to see what they sound like!
Thanks for the review James !
Will & Caroline
These are a direct fit and sound amazing in the newly fitted foam damped cabinet.
While I had the drivers out I put some time into adding foam, and it's tightened the bottom end up a little.
Really pleased with the quality replacements and definitely worthwhile to give the Missions a new lease of life.
Good quality. Good value.
Thanks for the review !
Will & Caroline
This is the second replacement speaker I have purchased from Willys Hi Fi. As before, speaker was delivered within a few days and was well wrapped. Dead easy to fit as advised. Thanks again.
Thanks for the review Ron !
Will & Caroline
I love my old Mission 733I speakers and was sad when the original bass/mid speakers dried out and began to crack, a common issue. So was delighted when I came across these as a replacement. As mentioned by others, these are very easy to replace, about 10 mins and then your up and running. I would also like to mention the speed of delivery, very quick and very well packaged. A massive thank you for offering a solution to keep my speakers going for many more years.
Thanks for the review Sean !
Will & Caroline
