THE ULTIMATE SMALL MONITOR ....
The Isobaric Small Reds build on Dr Rod’s isobaric experience at Linn with their Sara 9, Isobarik and Keltik loudspeakers (see Legend Story). We have mounted two bass drivers in isobaric configuration to achieve deeper bass in a relatively small standmount cabinet. The bass drivers are made in Norway and modified by us to extend their upper frequency range. The result is usable bass to well below 40 Hz that is also very tight, fast ,detailed and harmonically rich.
The other drivers of the ISRs have also been very carefully chosen and modified. Its superb 90mm midrange unit (also used in the Tikandi Plus) is made in Germany from high srength Mg alloy coated on each side with very hard ceramic so that it remains pistonic well above its crossover point of 3 kHz. This results in extraordinarily low distortion through the critical midband region allowing these vital frequencies to come through crystal clear and without the hardness or muddle of many loudspeakers in this region.
We now use a beryllium tweeter from Scan-Speak to give the same clarity in the treble – beryllium is the lightest, strongest metal so dome breakup is above 40 kHz. This clarity is maintained by the very high quality crossovers using polypropylene capacitors, air-cored inductors and non-inductive wire-wound resistors all directly soldered to each other.
Their cabinets are are very solidly built with truncated pyramidal shaped cabinet giving non-parallel sides to minimise internal reflections minimising cabinet resonances that blur timing; while the triangular front baffle which follow the size of the drivers minimise edge diffraction effects that blur the acoustic imaging.
Thus the Isobaric Small Reds cover the full range of human hearing in a relatively small cabinet – from deep bass to sparkling highs with very uniform frequency response – with very low distortion to faithfully retain the tonal character of music and voices. And by minimising driver and cabinet resonances they have the fast, open natural sound that makes all Legend loudspeakers famous.
It was for these reasons that the Isobaric Small Reds were chosen as monitors for Sydney’s Fine Music 2MBS-FM radio station’s recording studio where full-range high fidelity is essential.
And the measurements by Newport Test Labs for Australian Hi-Fi showed that the Small Reds have “an extremely flat frequency response – varying by + & – 1 dB between 100Hz and 10kHz….. So far as the low-frequency performance is concerned, I don’t think I have ever seen such extended low-frequency response from any loudspeaker with the Small Red’s internal volume (and external dimensions) …”
So listening through Legend’s Isobaric Small Reds is just like being there at the recorded performance.
A review of the original ISRs is given here – but they are now even better!
|3.5-way standmount||isobaric bass + mid + treble|
|Frequency response||35- 25,000Hz ± 3 dB|
|Sensitivity||85 dB/2.83V @ 1m|
|Impedance||4 ohms average|
|Recommended power||100 – 300W|
|Size(mm)||500(h)x230(w)x350(d) at base|
|Weight||17 kg each|
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