Radio today (Apr-Dec 1939)

which means: more profit to you thanks to CINAUDAGRAPH EVERYTIME you replace with a Cinaudagraph Speaker you've made a customer for life, and created for yourself an "ad" money couldn't buy. The name of the speaker? They seldom ask. They aren't interested. But when you hear that, "Sounds swell now" from customers' lips, you know it's only the beginning and you can thank Cinaudagraph. For there'll be more business and new customers coming . . . increased profit and prestige for you. Quality does it — quality that costs no more today. That's why Cinaudagraph — with its complete line of electro-dynamic and permanent magnet speakers for every "replacement" and "sound" purpose for both indoor and outdoor applications — is the name for you to remember. Say it, next time you see your jobber. CINAUDAGRAPH CORPORATION STAMFORD. CONNECTICUT SeMity Sound Individual pickup and amplification of each instrument in this orchestra gives unique musical effects. system do not have to play as loud as they would without amplifiers, and the result is better and more pleasing music. An accompanying photo shows the complete band and mixing panel. A separate speaker with directional baffle is mounted above the stage to handle vocal arrangements. Orchestra Employs Sound System to Develop New Effects A unique use of multiple sound systems is being made by the Buddy Wagner Band. Seven thirty-watt amplifiers are built into the music stands and the two input circuits of each amplifier are operated from Kontak microphones made by the Amperite Co., New York. Nine Kontak mikes are used on the violins, saxophones, piano, and bass, and three Amperite ribbon mikes are used to pick-up trumpets and trombones. A master gain control for each of the seven amplifiers is mounted on a control stand which is operated by the band leader. In addition to the seven amplifier gain controls, there is a master control which may be used to fade or accentuate all the amplifiers at once. This complete control board makes it possible to obtain unusual effects by mixing the various instruments of the orchestra. Solo parts may be brought up by the orchestra leader and the remaining instruments held in the sound background. MANY ADVANTAGES The advantage of using a number of amplifiers and microphones is that the sound being amplified is much more natural, and does not have the usual directional effect common to one and two speaker systems. The combinations and possibilities in mixing the various instruments are almost unlimited. The musicians using such a SOUND INSTALLATIONS (Continued from page 41) and pickup will destroy the good quality of the records. Hearing-aid equipment is generally installed in a few pews located in various sections of the room. It is wiser to spread the outlets around over the church auditorium than to confine them to one section. This will avoid splitting family groups. The equipment consists of the necessary wiring and outlet jacks. Customary procedure is to supply those requesting hearing aid with the necessary headphones. The power fed into this circuit is only 2 or 3 watts and may be taken from a driver stage for the final amplifier. The volume control should be installed in the amplifier or mixing panel. The operator should have monitoring facilities to set the desired level. TWIN AMPLIFIERS USED For the broadcasting of chimes from the church tower or steeple, trumpet speakers should be used. The power used may vary considerably; 50 watts Approximate number of speakers and amplifier power for a church sound system determined from these bar graphs. 52 RADIO TODAY