I’ve referred to the development of the LS3/5X compact, high performance hi-fi speaker in blog posts here and here, but now it is alive and available for direct sale it has some dedicated website pages of its own. Click on the LS3/5X logo to find them.
There’s a picture and technical specification below to whet the appetite. Please feel free to ask questions.
Technical Specification
System: Compact closed-box two-way passive loudspeaker.
Axial Frequency Response: 80Hz to 20kHz ±1.5dB.
Sensitivity: 81dB for 2.83V @ 1m (2π space).
Nominal Impedance: 8 Ohms (minimum 6.5 Ohms @ 150Hz).
Low Frequency Cut-off: -6dB @ 46Hz.
Low Frequency System Q: 0.65 @ 57Hz.
Maximum SPL: 98dB @ 1m (>50Hz, 2π space).
Maximum LF Driver Linear Excursion: ±9.8mm.
Group Delay: <5mS above 50Hz.
Harmonic Distortion: <0.3% above 150Hz. <0.1% above 1kHz (85dB @ 1m).
Crossover: Symmetrical 3rd order (electrical).
Crossover Frequency: 1400Hz.
Input Terminals: Jantzen binding posts.
Power Handling: Suitable for use with amplifiers rated above 25 Watts per channel.
Dimensions: 31cm x 19.4cm x 17.4cm (12.2in x 7.6in x 6.9in)
Net Weight: 7.1kg (15.7lbs)
Of course the specification numbers don’t tell the important part of the story. Subjectively, the LS3/5X is an extravagantly detailed and revealing speaker with a neutral tonal balance, pinpoint image focus, minimal colouration and a remarkable ability to play loud. Its closed box low frequency loading and consequently slow roll-off also means it can play surprisingly deep bass. The role of a hi-fi speaker is to stay out of the way of the music by simply reproducing the input signal, adding or erasing nothing. That’s the LS3/5X.
