Fairchild SM-1 Cartridge

Fairchild progres is typified in the new SM-1 Rotating Magnet Compatible Stereo/Monophonic cartridge.

The efforts of Fairchild's engineering staff, skilled as no other group in professional transducers, is culminated in a sleek, functionally designed cartridge.

The Fairchild SM-1 will complement any home music system. It is sufficietly rugged to stand the abuse of the most ancient record changer, yet it will enhance the performance of the finest professional arms and turntables.

Its high outputpermits quiet operation of the most economical of kit amplifiers, while the wide response will test the finest stereo amplifier-preamplifier units on the market.

Comparision of the specifications will convince you that, for stereo cartridges, all you need say is Fairchild.

SPECIFICATIONS

type: Custom-ground rotating ball magnet,with easily replaceable stylus.

output: 11.5 millivolts at 5 cm / sec. and 1 kc, 16.2 millivolts at 7 cm / sec. and 1 kc

hum level: Hum is 65 dB below signal level when mounted on turntable. These figures are well below competitive units under identical conditions.

construction: Internal copper case for electrostatic screening, completely enclosed inmu-metal outer case which affords complete magnetic shielding.

tracking: 30 cm/sec. sinusoidally, at approximately 3 grams.

dimensions: Designet to fit all standard record changer and transcription arms with either ½" or ⁷/₁₆" mounting centers

stylus tip radius: 0.7 mil diamond

recommended tracking pressure: 3-4 grams

impedance: 2000 ohms DC resistance and 0.5 h inductance. Nominal impedance at 1kc,3700ohms

optimum load: 47,000 ohms,39K to 100K acceptable

separation: Better than 25 dB at 1000 cycles, better than 20 dB over most of the audio range. Exceptional separation in the most critical 6 kc to 15 kc range.

response: Better that ±2 dB fro 20 cycles to 15,000 cycles.Nohigh end roll off - full fidlity.

damping: Individualvertical and lateral damping, preset at factory for optimum damping and tracking conditions.

compliance: Vertical 4 x 10 ⁻⁶ cm/dyne and lateral 6 x 10⁻⁶ cm/dyne for minimum record and stylus wear.

cable length: lead length to 20 feet permissable, assuming preamplifier terminated in47,000 ohms, and standard cable with capacity of approximately 23 mmf per foot.

accessories: packed with all required installation hardware, plus gram gauge and screwdriver. Instruction booklet in three languages; English, French and Spanish

inspection: All Fairchild products have fre e lifetime factory inspection.

dimensions: Weight 12 gm, stylus tip to mounting centers: standatd - 0.398 inch.

replacement stylus kit: Includes new vertical and lateral damping material, new stylus and generating element, easily installed by user.

Fairchild SA-12 Tonearm

The all new model SA-12 exemplifies the design for which Fairchild is famous. Examine the SA-12 . Start with the one-hole mounted base and built-in spirit level. Move next to the arm itself.... a sleek satin curve complemented by the balancing weight. Pause along the arm and note Fairchild's "Cueing" device. This controls gentle, precise setting down of stylus in groove. At arm's lenght is teh universal cartridge slide. Permits interchange of 2, 3 or 4 -pin monaural and stereo cartridges without re-wiring, tools or soldering.

The cost of your Fairchild SA-12 ... $ 34.95

The Model SA-12 Stereo Tonearm is the result of FAIRCHILD'S years of experience in the disc recording and playback industry. Excellence of formance andsimplicity of installation are combined with convenience in use. Imaginative design nears immediate fulfillment starting with the simple onehole mouting of this new arm. Lateral positioning isindicated by the built-in spirit level in the base. An exclusive "Cue-ing" device assures pinpoint accuracy of stylus placement regardless of stylus pressure. Machined aluminium parts combined with precision ball bearings keep inertia extremely low and assurereduced record and stylus wear. Spurious armresonances are eliminated by the efficiently isolated counterweight and by the balanced amss and structural rigidity inbuilt.

The SA-12 - " The Instrument Look" arm contains:

FAIRCHILD "Cue-ing" device permits operation with the simplicity of a record changer but with the accuracy of a bombsight.

Built-in spirit level indicates levelofturntable and arm at all times.

Color coded universal cartridgeslide permits interchange of2, 3 or 4-wire monaural and stereo cartridges without re-wring tool, or solder

Single hole mounting requires no template.

Mass statically balanced with sprigfree construction

Stylus pressure changed by micrometer style counterweight

Isolated resistive counterweight mouting to damp reconannce

Integral plug terminated cables, No soldering required - plugs directly into phone input.

Self cleaning contacts on cartridge slide assure noise-free operation.

"In Viev Stylus" for easy "Cue-ing"

Unique bearing mount keeps dust out.

Only 2⅛" rear overhand to facilitate cabinet mounting.

Adjustable height for all turntables.

Arm contur designed to really minimize tracking error.

Dimensions:

Height 3¼" max

Lenght 12¼"

Distance required from turntable center to arm pivot 8²⁷/₃₂"

Rear overhang only 2⅜"

FAIRCHILD Series 412

Fairchild offers functional perfectionof well designed, precision manufactured equipment. This is exemplified in the Series 412 turntables.

There are two basic techniques used for driving a turntable. one isthe use of idler pucks that touch the motor shaft and the inner rim of the table. The other is through the use of resilient belts, looped over the motor pulley and the around the turntable. Fairchild employs the latter method with certain modifications. Here's why?

Direct drive of puck to table rim transmits a high degree of motor noise (rumble). As the puck wears, flats or slick spots develop. This means increasing wow and flutter as thetable is used. Onthe other hand the belt drive should theoretically absorb most of the motor rumble . However, a bit of simple arithmetic points up a problem. With a turntable dimension of 12" and speed of 33⅓ rpm, the motor pulley on an 1800 rpm motor turns out to be less than ¼. Slippage results. To overcome this, all belt turntables (except Fairchild) resort to non-resilient fabric belts, negating the one important advantage of the system. Fairchild uses the technique proved in the famous Scully Lathe - the device used for the professional recording of disc - the double belt drive.

By use of two belts, and an intermediate step-down idler, the diameter of which stays nearly 1", slippage ceases to be a problem, and stretchable rubber belts may by used. Instead of the usual 54:1 step-down, the ratio never exceeds 13,5:1. The rumble level of all Fairchild tables is a minimum of 8 dB better than the NARTB standards for professional tables - the lowest rumble figures in the industry. By the way, Fairchild is the only turntable to specify vertical rumble as well as lateral rumble. This is especially important with stereo. You hear only the music.

Another basic function of a turntable is to turn at the correct speed, and to keep that speed constant. No Fairchild turntables will ever rewrite the music of your favorite composer by causing pitch changes due to incorrect speed. And the music will be clear and beautyful, without the sire wail of wow.

All Fairchild turntables use an extremeley accurately balanced hysteresis synchronous motor, with high starting and running torque. There is never any speed variation due to line voltage or load variations.

The other factor affecting wow and fluttreis the turntable itself. Fairchild has taken particular pains in this regard, too. The table is a heavy aluminium casting, with five webs. The outer portion of these webs support a ring of "Densite" a heavy , acoustically dead material.

The result is a table with high moment of inertia,dimensional stability, and an absolute absence of sharp resonances (ringing) in the audible spectrum.

SPECIFICATIONS:

Rumble figures generally quoted in the industry make no reference to the specifications or test methods utilized. Fairchild and only Fairchild, tests and publishes its specifications in accordance with the applicable NARTB requirements for professional turntables.

All Fairchild turntables are INDIVIDUALLY tested on a specially designed and built vibration-free platform, and ALL must pass these test with the following results:

NARTB PROFESSIONAL - Fairchild Test

PLAYBACK REQUIREMENT - Requirement

Rumble: -35 dB lateral, -43 dB vertical and lateral

Wow & Flutter: ±0,2%, ±0,1%

Speed Accuracy: ±0,3%, ±0,3%

Model 412-1; 2 belt drive, hysteresis synchronous motor, 117 volt, 60 cycle

Speed: 33⅓ rpm