Dual 701 Brochure

Page 1

Dual presents the 701.

A significantly different kind of turntable.

Page 2

Electronically-regulated,direct-dtive motor
with exclusive overlapping coil system.

The bottom element (A) houses the solid state components including integrated
Circurts, which comprise the switching. commutation and regulator circuns. Element
(B) shows one of the field-cod assemblies. each containing eight bifilor-wound
coils. The two sets of coils are offset by 22' l /2" thus prowding a continuously
rotating field. Hall-effect dewces are located in each layer The rotor {element C1:
and platter turn at the selected speed

a- " '-

cmiiiiittiumy/W

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Full-size twelve-inch dynamically
balanced, die-cast platter.

The 701 platter rests directly on the rotor and rotates with it at
the selected speed. Every platter is cast from a Single piece of speaal
zinc alloy which is then individually machined and balanced while
rotating at high speed. Any imbalances. however minute. are
graphically revealed by computerized gauges and precnsely corrected.
The platters full twelve-inch diameter, 9.7 pounds of weight (platter
plus rotor) and perfect dynamic balance combine to provide optimum
flywheel effect.

Resonance-cancelling tillers
integral with counterbalance.

Cutaway View reveals the intricate engineering of the 701 5
unique counterbalance which houses two separate mechanical
filters. These filters absorb resonant energy in the frequency
ranges of the tonearm/cartridge system and the chassis. The
result IS flatter frequency response and greater isolation from
acoustical feedback.

Page 3

'loneaun mounted in
four-point low friction
gimbal suspension.

The 70l tonearrn pwols on
1dcntncal sets of low-lndton
needle-pom? bearings set In a
speoal deSzgned doable gxmbal
Each gimbal «s handassembled
and gauges dewgned Dy Dual
assme that bearmg lrrctlon w:||
conform to stringent specllxcotxons

Separate anti-skating
lor conical and
elliptical styli.

Balanced trackmg pressue an
grOOV: SIdCVVCllS IS ass-cred by
separate calibrations for conzcal
and ellnpncal 57w: Th1: prawnsor
IS requnred In such lowinmcm
tonearms whxc'n ore hxg'riv,
VESmflSIVC to the (inference m
tncnonal pull of each style-s shone

i pltch 33

8% pitch-control range lot each speed,
and built-tn tllunnnated strobe.

Art electronxc prrchvcomral varxcble over an 8°:- range :5 prevnded
for each of the 70l 5 two speeds {33-1/3 and 45 rpm: Thus, euther
speed can be VOTIed \NllhOLl affectth the other settmg Each
plTClw(0nerl rs prdeed wnh a reference setting for standardizahon
For wewmg comemence. the nllurnmated strobe wmdow has an
odgusvable angle from directly overhead to apprOxumately 20
degrees forward

The Dual 701,a model ol understated technology.

The 701 s appearance :5 deceprwely s:m"ie Syncc- all mechanzsms for ronearm semngs and speed
controls are housed Internally a mt-re look. of Wu;- 70: nges lzrtle hm of 175 hxgr degree of sophistmotxon
I: does however lndlCClC the Szfnp mm,- of oaercnon In ouromgn: ploy cl! star? and stop lUflCllOnS are
controlled O'v a Srngle Swutch In mongol p 3;. h-g 3_.rntoble rs started be Slmply mcung the torn rm
t'oword the Teco'd And In other F03}: pic, ma, he :merruptec' any mm: by lxttmg the loneorm manually
or wnh the (we control Moreover we 70} ,s desgned to marn'c»n orlglnal performance standards
thrmghom years of common: we