Word: stereos
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...recording equipment gets a lot of use at home, too. Of the numerous tapes in his music library only two are pre-recorded. The balance are all products of his own endeavors. Since WCRB came on the air with stereo FM, Bruce has been picking up and preserving their live broadcasts of the BSO concerts...
...just mentioned, Bruce uses a Marants Model 7 stereo pre-amplifier. This unit in his estimation is as close to perfection as is possible, and he has never made any changes in its construction. However, two of the power amplifiers (Bruce uses three separate units, for reasons that were never quite clear to me) are almost entirely his own design. He worked out their circuitry for his company (Bruce is Chief Engineer of Audio Lab, here in Cambridge) when they needed special high power amplifiers with as low distortion as possible for a theater installation...
...begged for a chance to sign. To compete with such entrenched Southeastern powers as Auburn and Mississippi, Bryant upped the ante: he promised first-class meals and travel accommodations, persuaded Alabama officials to enlarge the school's stadium (from 32,000 to 43,000 seats) and build a stereo-equipped dressing room, a swimming pool, and a "hospitality house" for entertaining rookie prospects and their parents...
Anytime you move a magnet in the close proximity of a coiled wire (or vice versa) you cause a current to flow through the coil. In the stereo cartridge we can either attach a magnet to the stylus arm and hold two coils stationary in the body of the device, or we can wind two coils onto the arm in different directions and mount a stationary magnet in the body. Either way (one is called "moving magnet", the other "moving coil" for obcious reasons), when the needle does its mazurka in the groove the stylus arms follows, and the groove...
...criteria for judging stereo cartridges were sound quality and treatment of records. A number of eartridges sound good; a shockingly larger number sound downright bad. One of the most reliable performers in the lower price range for magnetic pickups is the PICKERING 380--C. It has a smooth quality which many people prefer, and, at $29.95, it is a best buy. The afore-mentioned GRADO and ADC models are still better performers and exhibit astounding high precision in craftmanship...