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SPM-165/8

Monacor SPM-165/8 Midwoofer - Mission 73-LF58W Replacement

Monacor 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.

Key Features:

  • Good value general replacement unit
  • Damped paper pulp cone
  • Very smooth response
  • Low loss rubber surround
  • Rugged steel chassis

    Basic parameters:

    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

     

    Here's the full datasheet:

    .pdf icon

    Customer Reviews

    Based on 17 reviews
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    B
    Brian Jones
    73LF 58W - Mission 734 replacement (Monacor SPM-165/8 Midwoofer)

    4 units bought to upgrade my old cracked Mission 734 speakers.
    Arrived a few days later well packaged individually and collectively.
    Easily replaced, nice fit, straightforward.
    Can crank up to 11 again, if my Daughter allows :-)
    Thanks.

    Thanks for the review Brian !
    Will & Caroline

    J
    Jack Fikkers
    So happy!

    My Mission 733 speakers are alive again. And how! Willys thank you!
    So happy!

    jack

    Thanks for the review Jack !
    Will & Caroline

    N
    Neg
    Enjoying my Mission 733s again!

    Great purchase! No issues with replacing my original, cracked 733 cones. Really happy to take a trip down memory lane & listen to music again through one of my first speaker purchases. Thanks!

    Thanks for the review !
    Will & Caroline

    L
    Liam O’Rourke
    Excellent replacement

    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

    J
    James Hunt
    Replacements for Mission 734i mid-woofers.

    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

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