Laboratory Jottings

Radio Record, Volume IV, Issue 11, 26 September 1930, Page 21

Laboratory Jottings

"HH Hlectric Lamp House have sup plied us with one of their W.B cone speakers, on which to report Although a very moderately-priced speaker, it is nevertheless a good one. It has a particularly neat appearance; the frame being of solid moulded’ bakelite, finished in a warm brown. This, in the first place, is a good feature, fox there is nothing to work loose and introduce unwanted frequencies. The tone is surprising, for from an instrument of this kind one would ex: pect harsh, unnatural sounds, but this is not so, The range of frequencies is between 75 and 6,000, but these extremes are very faint. The extremi ties that really enter into the quality | of the output lie between 100 and 450¢ cycles. Listening to the speaker one cannot help but remark on the fullness of the tone. Speech and musie are clear, and even up to more than coms fortable room volume there is no trace of over-loading and rattle. Moreover, it is as sensitive as the average cong speaker. Altogether this speaker is worth more than the modest sum asked, and the writer remembers the days not sa long ago when an instrument like this would have cost more than double the price.