Grace g 707 owners manual
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Page 1
GRACE STEREO PRODUCTS
(5-707 flUHD-FIHSTEH
STEREO TUNE ARM
Manufacturers: SHINAGAWA MUSE" (0., '0.
Sole Agents: SUIKO DENPA COMPANY, [11).
Page 2
Developed especially for 4 channel stereo records, the 6-707 is an ultra light weight
semi-integrated pick-up arm. It embodies the quality of the Grace" integrated Sigma
709 arm coupled with the versatility of the Grace 6-840 arm. When used with a 4
channel stereo cartridge, or a high-compliance cartridge, the 6-707 gives the superb
reproduction available only from an integrated pick-up.
FEATURES:
o
The use of a 6 mm. dia. light alloy pipe specially hard finished for good
appearance, eliminates unwanted resonances.
In order not to distort the mid frequencies, because of dead mass, the 6-707 is
provided with a non-interchangeable acrylic head shell. This is an integral part of
the entire arm, however, changing cartridges can still be easily achieved.
A high precision double gimbal pivot refined after over 10 years of manufacturing
experience is used on this arm. The gimbals now use aircraft instrument micro
pivot hearings to reduce friction resistance to less than 20 milligrams.
The balancing of the 6-707 arm is done by sliding and turning the weights in steps
of 0.1 gram. Also, by use of the slide feature, cartridges varying in total weight
between 4.5 grams and 12 grams can be perfectly adjusted.
* A 35 cm. (14") arm length has been chosen for the 6.707 arm to enable it to be
fitted in standard player units and hi-fi sets.
An arm director, which was formerly supplied as an optional accessory, has been
incorporated, resulting in a smooth positive tone arm lowering motion.
' A bias adjuster is also incorporated, and used both the rotating lever and weighted
string principle to achieve perfect tracing of the record grooves.
Since Discrete 4 channel stereo records require a much wider range of frequency
response, as high as 50 KHZ. -- the wiring between cartridge and inputjack isa
specially developed plastic and metal mesh shielding with low capacitive effect.
thus delivering the full frequency range to the amplifier.