Mission Freedom 770 Bookshelf Speakers

These speakers sound outstanding and are working perfectly. They are quite rare and highly regarded. This set is in perfect working order.

Cosmetic condition is very good. Minimal wear and tear visible. Please rely on our high-resolution photographs for details. You will receive these exactly in the condition you see in the photos.

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Description

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.

Specifications

Frequency range: 20Hz to 25kHz

Frequency response: 35Hz to 20kHz +-3dB

Nominal impedance: 8 ohms

Recommended amplifier: 30 to 150 watts per channel

Tweeter: 25mm impedance transformed

Woofer: 215mm homopolymer cone

Crossover frequency: 1.9kHz

Connections: 5 way binding post

Enclosure volume: 37 litres

Dimensions: 620 x 260 x 320mm

Shipping weight: 32kg

Finish: walnut, black ash, grey