EMI 13 x 8 were elliptical speakersunpopular in the USA since sound wavesare round, not elliptical but compare to and last better than electrostatics with a better bass yet cannot be repaired professionally. EMI and DECCA were record labels, EMI reel to reel tape recorders thought the 'Rolls Royce' of recording machines. Alan Blumlein the inventor of stereo sound working with EMI proposed the ultra-linear amplifier used in the Leak TL10 and popularized in the 1950s by Hafler and Keroes.
Note a rusted chassis affects sound quality, as the glue and paper have been exposed to severe dampness. PVC surrounds obviously crumpled also affect sound quality and ought to be perfect.EMI speaker enclosure EMI gebination Speaker EMI 92390 EMI TWEETER It's important your amplifier is either rebuilt or new before judging the sound of EMI Hi-End speakers which as vintage, need run-in too. EMI speakers are run-in with now prohibitively expensive amplifiers offered on okay and not with NAIM amplifiers which are suited to more modern Redheko tube speakers. The tube amplifier and equipment connected to Hi-End EMI must be of the correct tube type listed below. A Lo-Fi series of EMI speakers are available for Lo-Fi tube amplifiers by reading the 92390 link in this guide. The Output tube specified affects the performance.IMPEDANCE in Ohms: 3, 4, 5, 8, 15 and 16 available. Upgrading: X-over quality expensive, 319 chassis x-over coil is hidden under an orange cloth sleeve, wound around a big silver capacitor with a meter measured 118.5 uF! Another large red color, 150 volt, 2 uF metaxial is slung behind the tag board. Empty box cabinets improve by adding acoustic wadding,DLS529X hasGlass Fiber (GF) yellowLoft insulation (claimed to be the best bass absorber) about 2.5" thick on sides,back, top and base. White GF and recycled 'chopped clothing' are wadding for the GF/paper-mix cone 13 x 8. Car sound deadening brown wadding is used in theB
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