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Mission 770 Freedom

2-way reflex loudspeaker system (1984-85)

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Mission 770 Freedom


We are confident that the 770 Freedom is a worthy successor to our legendary 770. Our objective in replacing the 770 was to improve on that model in certain specific areas.

Firstly, we wanted to ensure that the frequency range was even more extended. Secondly, our design team felt that the bass response could be tighter and with greater transient attack. Thirdly, we wanted to increase the available headroom so that at high power levels the system did not go into saturation. Finally, we wanted to increase efficiency for the era of digital master tapes.

For the mid/bass drive unit a brand new cone was developed made of an advanced homopolymer material impregnated with certain minerals (the formula not being made public by Mission) to offer optimum mass, rigidity, Q and sonic opaqueness - a further advance on polypropylene.

The voice coil is manufactured using high temperature aluminium former and is carefully ventilated to increase power handling. The motor system is exceptionally powerful for the amount of magnet we have used and this has been achieved by careful geometric design of the pole piece which in turn is brass plated. This arrangement results in minimal magnetic flux wastages into stray fields.

The driver is assembled into a sophisticated rigid magnesium diecast chassis. The high frequency unit is carefully designed for extreme power and exhibits exceptional power / frequency response linearity and no major saturation at high levels. It is further oil cooled to avoid temperature related performance aberrations and for increased saturation thresholds.

The cabinet construction is based on Mission's unique multi-folded geometry ensuring rigidity for low frequency transient attack without coloring the very open and transparent mid band. The cabinet walls are visco elastically damped to control and attenuate resonances and minimise stray acoustic output to ensure minimal acoustic phase distortion.

The Freedom's low frequency behaviour is totally unusual for a reflex loudspeaker and this has been achieved by careful integration of the drive unit Qs in relation to the 37 litres of internal volume and the use of the Mission resistive reflex port.

The Freedom is a powerful expression of Mission's experience and technology. Subjectively, and when used in conjunction with good quality ancillary equipment, the results are exhilarating and most realistic.


Type: 2 way, 2 driver loudspeaker system

Frequency Response: 35Hz to 20kHz

Recommended Amplifier: 30 to 150W

Crossover Frequency: 1900Hz

Impedance: 8Ω

Sensitivity: 91dB

Bass: 1 x 215mm homopolymer cone

Tweeter: 1 x 25mm polyamid super ellipse

Enclosure: bass reflex

Finish: walnut, black ash, grey

Dimensions: 620 x 260 x 320mm

Weight: 32kg

Year: 1985


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Missin 770 Freedom

I search the right correct
woofer 8" 215mm
for replacement.

My left woofer do his job
only if you press on it 2mm

Please let me know, if you know a
model from seas, mission, visaton
that is right for that.

re: Woofer replcement link below

Do these fit the Freedom v4?

This website is not affiliated with or sponsored by Mission. To purchase 770 Freedom spares or accessories, please contact the company via their website or visit an authorised retailer.