Dual 1226 - Tonearm and Tonearm Suspension

Tonearm and Tonearm Suspension
The tonearm of the Dual 1226 is counter
balanced and pivot mounted vertically and
horizontally. This provides extremely fa-
vourable tracking characteristics. The to-
nearm head is removable. To aid in repla-
cing or adjusting the tonearm head a hole
Fig.
Fig.
7
B
Tonearm bearing assembly
237 244 245
Tonearm bearing assembly
(view from underneath)
is provided in the chassis to facilitate
adjustment of the tonearm head without
First removing the tonearm. Before setting
the correct stylus force for the cartridge
which has been installed the tonearm should
be balanced with the stylus force setting
at zero. It is recommended that balancing
should be carried out in the direct vici-
nity of the tonearm rest. This is carried
out by rotating the counterweight.
The counterweight is designed so that it
can balance cartridges with weights from
1 - 10 g.
For shock absorption (absorption of brief
shocks) the counterweight is flexibly moun-
ted on the tonearm and secured to prevent
unintentional rotation. The tonearm head is
designed to accept all cartridges with in-
ternationally standard 1/2" mounting centers
and with a weight not exceeding 10 gq. Stylus
force is set by rotating the graduated spring
housing (56) and thus tensioning or slacke-
ning the coil spring contained therein. The
scale is calibrated for an adjustment range
of 0 - 5 p, permitting accurate setting
within that range in 0.5 p steps.
To replace the complete tonearm and bearing
assembly we recommend proceeding as follows:
1. Tighten unit in repair jig, set stylus
force scale to zero and lock the tonearm
in position.
2. Turn unit upside down, remove retainer sprin
(193) and unsolder tonearm leads.
3. Slacken hexagon nuts (236) then remove to-
nearm.
Tonearm complete with bearing frame assem—
bly should be refitted in reverse order.
Before replacing the tonearm first loosen
counternut (245) and slightly turn threa-
ded pin (244). After reinstallation read-
just play of bearing using the threaded
pin (see page 7).
To remove the tonearm from the bearing fra-
me unsolder the tonearm leads and set
the tonearm tracking force scale to zero.
Unscrew locknut (42) with setscrew (41)
and bearing screw (62) (left-hand thread).
Carefully remove tonearm from bearing frame.