Hadcock GH 228 Fitting Instructions Manual Download Page 5

4  FITTING THE HEADSHELL TO THE ARM TUBE

 

Attach the HEADSHELL to the ARM TUBE and tighten the SET SCREW (5) near   

 

 

the end of the tube. Carefully push the wires through the HEADSHELL and attach  

 

the CARTRIDGE TAGS to the cartridge pins as follows: 

 
 

RED = RIGHT LIVE

 

GREEN = RIGHT GROUND

 

WHITE/YELLOW = LEFT LIVE

 

BLUE/BLACK = LEFT GROUND

 

Do not solder direct to the cartridge pins!

5  FITTING WEIGHTS TO THE WEIGHT SUPPORT

 

The MAIN WEIGHT (11) and the RIDER WEIGHT (7) can now be fitted to the 

 

WEIGHT SUPPORT (8). Position the MAIN WEIGHT (11) about half way along 

 

to WEIGHT SUPPORT (8) AS SHOWN IN FIG.1 with the RIDER WEIGHT to the 

 

end of the WEIGHT SUPPORT (8).

6  TOP ARM ASSEMBLY TO BASE ASSEMBLY

 

The whole top arm assembly can now be positioned onto the base assembly locating  

 

the BEARING HOUSING (3) bearing onto the PIVOT PIN (20) in PIVOT PILLAR (21).  

 

Loosen SET SCREW (17) with the smallest ALLEN KEY (0.050”) and then adjust the  

 

ARM TUBE (2) in the BEARING HOUSING (3) SO THAT THE RED PLUG (31) wires exit  

 

the ARM TUBE facing downwards. Make sure that when the RED PLUG is attached to  

 

the red socket in the LIFT PLATFORM (12) the lead wires face the turntable spindle.

7  HEADSHELL ADJUSTMENT

 

Place the ALIGNMENT PROTRACTOR over the turntable spindle and adjust the HEADSHELL  

 

(1) by slackening the SET SCREW (5) of the headshell along the arm tube until the cartridge  

 

is parallel with the lines when the stylus rests at points A and B. Ensure that the top face  

 

of the HEADSHELL is set level with the top face of the BEARING HOUSING (3).

Summary of Contents for GH 228

Page 1: ...GH 228 Tonearm ...

Page 2: ...85mm 8 38 Offset angle 23 Rear overhang 60 9mm 2 4 Headshell mounting 12 7mm 0 50 Cartridge mass 3 12 gms BOX CONTENTS Top arm tube complete with headshell and top pivot assembly Arm base with unilift assembled with captive arm lead Ground lead Main weight Rider weight Bias weight Bias weight pulley assembly 3 Allen Keys Cartridge mounting screws Mounting template Alignment protractor Guarantee ca...

Page 3: ...Fitting instructions ...

Page 4: ...HREADED FLANGE 22 should be positioned so that the SET SCREW 29 in the flange is facing the front thereby enabling the PIVOT PILLAR 21 to be adjusted for height with the 1 16 ALLEN KEY 2 BIAS PULLEY WHEEL ASSEMBLY Undo the SOCKET CAP SCREW 15 with the ALLEN KEY 2mm and fit the PULLEY WHEEL ARM with the SPACER 14 and refit to the PIVOT PILLAR 21 See Fig 2 3 FITTING THE CARTRIDGE TO THE HEADSHELL Slack...

Page 5: ... ASSEMBLY TO BASE ASSEMBLY The whole top arm assembly can now be positioned onto the base assembly locating the BEARING HOUSING 3 bearing onto the PIVOT PIN 20 in PIVOT PILLAR 21 Loosen SET SCREW 17 with the smallest ALLEN KEY 0 050 and then adjust the ARM TUBE 2 in the BEARING HOUSING 3 SO THAT THE RED PLUG 31 wires exit the ARM TUBE facing downwards Make sure that when the RED PLUG is attached t...

Page 6: ...S THREAD LOOP should be attached to the BIAS ROD 19 between the plastic spacers The BIAS PULLEY WHEEL ARM 16 should be set so that the thread is parallel with the ARM TUBE when the stylus is resting on the record See Fig 3 It is recommended that the position of the BIAS THREAD LOOP between the spacers on the BIAS ROD 19 should initially be halfway along the rod The final position of the BIAS THREAD...

Page 7: ......

Page 8: ...C C Hadcock Audio Division The Watermark Ribbleton Lane Preston Lancashire UK PR1 5EZ ...

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