www.americanradiohistory.com A rr a I GAINEMINIMIIMIIMINIIIMIII711111tlr1/`[ IIMMlNI BALANCED PERFORMANCE preserves full orchestral balance throughout the entire audible frequency range Now Available on this SOUND RECORDING there's nothing that's quite as important the NEW 7" PLASTIC REEL IN as balanced performance. For this is what determines end result, in terms of listening enjoyment. Suppose you're recording a symphony orchestra. Every note 2' inch hub and overtone of every instrument must come through with the more area for labeling same relative value as in the live performance. And Audiotape's uniform frequency response preserves this tonal balance less chance of tape spillage more to the fullest possible extent. greater protection to tape This means faithful, well -balanced reproduction of all musical of the bass tuba to the rugged, non -warping construction instruments, from the lowest rumble highest overtones of the piccolo. It's a factor to which the distinctive, modern design trained ear is particularly sensitive - an Audiotape advantage that appeals strongly to the most critical professional recordists. response, noise level and dis- another EXTRA -VALUE feature Audiotape's output, frequency tortion are correctly proportioned for the most satisfactory end at no extra cost! result - with no compromise on quality anywhere along the line. In performance and in cost, Audiotape speaks for itself. audiadiscs AUDIO DEVICES, Inc. Wire 444 MADISON AVE., NEW YORK 22, N.Y. audiarilm Offices in Hollywood - Chicago Export Dept., 13 East 40th St., New York 16, N.Y.. Cables "ARLA6" www.americanradiohistory.com Quality is a word often loosely used. "High Fidelity" is a term also often exploited by manufactur- ers of every type of sound reproducing equipment taking advan- tage of the present public interest. In most cases this equipment produces neither quality nor faithfulness of performance justify- ing use of the term. High fidelity sound reproduction has long been a specialized science and art practiced by too few manufacturers having a history of leadership, progress and intrinsic sense of dollar value. You may judge the validity of present claims to the classifi- cation "High Fidelity" by determining whether the manufacturer has a history of sound practice and integrity in the art. Such developments as the Jensen Model 530 Coaxial loud- speaker typify these histories. At one hundred and twenty -nine dollars and fifty cents this finest of 15 -inch coaxial speakers is acclaimed as a milestone in speaker engineering. Cost has not been a factor, though experience in design and production facil- ity have kept the price within reach of all. The low frequency unit is newly designed for smooth transition in the crossover region. The crossover network is included as a separate more efficient unit. The new compression driver has been developed as a per- fect match for the high frequency divided cellular Hypex horn. Wide range extension, unusual smoothness and outstanding bal- ance of response guarantee an impressive professional realism unique in two way systems. This new Jensen 530 adds to the many reasons why in loud- speakers Jensen has been the world's quality standard for more than a quarter century. Other fine Jensen Coaxial speakers are: Model H 520 15" speaker at sixty -nine dollars and fifty cents. Second only to the 530 in performance with combination driver high frequency unit loaded with multi- cellular Hypex formula horn -crossover network with controls is built -in feature; its extraordinary high power rating and efficiency are due to the advanced design Alnico 5 P M magnetic structure. Model H 222 12" version of the H 520 at fifty -four dollars and fifty cents is ideal when speaker and enclosure area is limited. Model K 310 15" Coaxial at thirty -seven dollars and sixty cents. Model K 210 12" Coaxial at twenty -four dollars and eighty -five cents. Feature built in frequency division system, piston type high frequency unit noted Jensen diaplane radiator, lower power rating- designed for low cost application these two speakers outperform many costing twice as much. Before you choose your high fidelity system write for the Jensen Brochure 1030, a simple survey of all hi -fi components and advice on their selection- remember Jensen designed and developed world's finest loudspeaker, the Jensen G 610 Triaxial. Jensen speakers $2,375.00 to $24.85. MANUFACTURING COMPANY Division of The Muter Company ,Jefl4cfl6600 S. LARAMIE AVE., CHICAGO 38, ILLINOIS Burton browne advertising In Canada: Copper Wire Products, Ltd., Licensee www.americanradiohistory.com INTRODUCING MODEL TL /10, AN ENTIRELY NEW AMPLIFIER-PRE-AMPLIFIER COMBINATION BY QAittu E A ONLY $109.50 NIET F0 tafr COMPLETE WITH "pow OHE,. ever AMP`lt,R eonom¡cat combination built by LEAKA REMOTE CONTROL ' PRE- Nusk of notactUrer Britain's finest audio equIpmO This great amplifier maintains, in every respect, the MODEL world- renowned Leak reputation for precision engi- TL /10 neering, custom assembly and fastidious wiring. It is Bottom AMPLIFIER a superior product through and through, built by con- view of scientious craftsmen, to give flawless performance TL /10 chassis, over many years, with complete satisfaction to the showing home listener and professional communications engi- all neer alike. Model TL /10 incorporates the newest, components ultra -linear 10 -Watt Circuit, including two of the latest mounted in push -pull. on terminal type KT-61 beam power output tetrodes board for The high damping factor of 23, and the low hum level easy of minus 76db. below full output, are ordinarily found servicing... as in the only in far more expensive amplifiers. most Since low harmonic distortion is far more important expensive to obtain than high power output (not a scientific and difficult laboratory major factor in home music reproduction), the effect and of the achievement of reducing distortion to an insig. government nificant two tenths of one percent at 1000 cycles. for equipment. a power output of 8 watts, can readily be imagined, and will become apparent in listening to this fine amplifier. This is a new improved design of the famous Leak unit which set unmatched performance standards at the B.B.C. and other world renowned broadcast studios REMOTE CONTROL laboratories. In its new version, it is the ideal and "POINT ONE" PREAMPLIFIER, electronic complement to the TL /10 amplifier. It is a WITH MASTER CONTROL UNIT two -stage feedback unit of distortion so low as to be virtually unmeasureable, and in which resonant circuit filters are NOT used. The "Point One" unit will operate from any phonograph cartridge now available, includ- ing Audak, Electro- Voice, Fairchild, General Electric, Pickering, Sonotone; from any microphone; from any radio unit or tuner; and with the greatest convenience, from any tape recording machine. It provides the best features of all previous models, and every desirable refinement suggested by users in Britain and the U. S. Amolilier Dimensions: 11" wide a 9" deep x 6 -a" high. These include the greatest variety of equalization ad- justments ever provided on a Leak amplifier ... all Pre Amplifier Master Control that ere required, without unnecessary flourishes, for Unit Dimensions. fullest satisfaction in listening to today's wide range 10" wide x 3" high x 2i a" deep. of recordings under home acoustic conditions. Power: 105 Volts -125 Volts. All controls on a handsome, highly polished gold 50 to 60 Cycles AC escutcheon plate with jeweled pilot light. The entire plate removes for panel mounting, when desired. plus tape recorder jacks (input and out)ut) on FOUR MASTER CONTROLS handsome front pane i t e Tape Recording Jacks An Exclusive Feature) Control ;1 Input selector Readily accessible jocks, for re- S.0 positions: Tuner, Tape, AES, tape, Control #2 Treble Control #3 Boss Control #4 Volume cording and playing bock NARTB, FFRR, COL. LP. The variable gain ... are provided, on front panel The latter four positions provide Eight indicated stages... ove Eight indicated stages... over Continuously without plus switch. for instantaneous use. equalization for all records. a 23 db range, without dis a 23 db range... all "OnOff' tortion. boom iness. replaceable Industries Group... and carries the Seal of B.I.C. endorsed quality... British Industries All valves The Leak TL 10 amplifier is a product of the British with Standard U.S. tubes. Audio Products made in Britain, import and introduce them, and Corporation is an American Company, whose function is to seek out the finest largest company of its kind, and offers you its own endorsement of Prices and specifications keep them welcome in homes throughout America. B.I.C. is the oldest and extensive B.I.C. service and parts faci ities are always at subject to change the quality of each product it sponsors. In addition, and even more important ... the with at least the same assurance as if it were made in The U. S. without notice. your disposal, so that you can purchase any British Industries endorsed product WRITE FOR A COPY OF "SOUND CRAFTSMANSHIP" British Industries Corporation 164 Duane Street. New York 13,5.T Britain's finest Dept H F-3 16 pages illustrating and describing l Send my copy of Sound Craftsmanship. reproducing equipment ... facts you'll want for Name music planning improvements and additions to your set. 1 Address 1 City Inne Vale BRITISH INDUSTRIES CORPORATION 164 DUANE STREET NEW YORK 13, N.Y. www.americanradiohistory.com fliült JideliIq T H E M A G A Z IiE F O R MUSIC LISTENERS Volume 4 Number I March 1954 This Issue. By hard - AUTHORitatively Speaking 5 pressed magazine -edi- tors, time is usually re- Noted With Interest 7 garded as hostile, but not always. James Readers' Forum z8 Deane covered the Missa sessions for us last As The Editor Sees It 33 March.