the home of the turntable

Library / Dual

Dual 604

2-Speed Electronic Direct-Drive Turntable (1977-1978)

review this turntable (4 reviews)

dual cs 604 tonearm
dual 604 direct drive turntable
Dual 604


Drive: EDS 500 electronically regulated direct drive system

Start up time: 2s to 33.33rpm

Platter: non-magnetic, dynamically balanced, detachable, 1.2kg, 304mm diameter

Speeds: 33.33 and 45rpm adjustable

Pitch control: 10% variable with calibration scale

Speed control: with illuminated stroboscope

Wow and flutter: +-0.06%

Rumble: >65dB weighted

Tonearm: torsionally rigid tubular aluminium tonearm in low friction four point gimbal suspension, tonearm counterbalance with two mechanical anti-resonance filters

Effective length: 221mm

Stylus pressure: 0-3g

Cartridge holder: removable for 1/2" cartridges from 4.5 to 10g

Adjustable overhang: 5mm


the new dual turntables

united audio


instruction/owners manual  English Deutsch Francais

packing instructions  English

service manual  Deutsch - Adagio62

service manual  English - dualcan

Please login or register a free account in the forum to download files

If you have additional documentation please consider donating a copy to our free archive.

NOTE To view PDF files the latest version of the official acrobat reader is required.

Dual Direct Drive Turntables

Dual 604 / CS604 owners manual, service manuals and schematics are for reference only and the Vinyl Engine bears no responsibility for errors or other inaccuracies. The PDF files are provided under strict licence. Reproduction without prior permission or for financial gain is strictly prohibited. This website is not affiliated with or sponsored by Dual.


Dual 604 counterweight design

Could anybody help me to find detailed description or drawing of Dual-604's anti-resonance counterweight construction. I've got the broken one and have no idea how to fix it up. Thanks!

604 stops in middle of LP

I recently picked up a Dual 604 on ebay, it runs good except occasionally it stops in the middle of an LP. The strobe light is still lit and if I give the platter a spin it runs again then quits soon there after. Any ideas?

Stylus lift at end of album

My dual 604 runs fun but lately it seems to drag the stylus across the very last portion of the album when it lifts up to return to the rest position at the end of playing. Is there a way to prevent this? I have tried moving the counter weight further back but I also want to ensure the tonearm is properly balanced.

Thanks for any help.

Stylus lift at end of album


it seems that the time during witch the arm has to lift is too long.

You should verify ( and to do that you have to open the machine ) that the lift is still enough greasy, euh oiled,
or something like that.

When looking at the lift, you will understand where is the problem by helping manually to make it work.

I had the problem with a B&O but in this case, you should verify by yourself.