dual, cs504, cs-504, cs 504, 504, mk1, cs504-1, cs-504-1, belt, drive, manual, belt drive, drive belt, turntable, record, player, record deck, deck, disc, transcription, record player, phono, phonograph, riaa, hi-fi, hi fi, hifi, cartridge, stylus, needle, tone, arm, tone arm, sound, audio, hire, rent, rental, sales, install, installation, service, repair, dealer Free data sheet by GB Audio Services: sound system design, sale, hire, installation. CS504   


Production: Obsolete
Hire stock: No
New stock: No
Used stock: No

Dual belt drive hi-fi turntable

One of the UK's most popular record decks from the late 1970s, the CS504 and its successors CS505 and CS506 represented excellent value for money. Dual's simple design and mass production made good reproduction fidelity achievable on a modest budget.

Choice of two speeds: 33 or 45 rpm
Vari-speed adjuster
Semi automatic straight, low mass tone-arm
Detachable perspex lid
Dual-specific clip-on headshell/cartridge
Anti-vibration sprung floating chassis
Usable cartridge weight: 4 - 10g
Power requirements: 230V AC (50Hz)
Power consumption: 8W (max.)

Dual CS504 belt drive hi-fi turntable  
The CS504 was sold with a Dual cartridge which clipped onto the end to the tone-arm. Other standard cartridges can only be used with a special adaptor plate TK24, which are now extremely rare.

The TK-24 cartridge holder was also used on the following Dual turntables: 461, 481, 491, 502, 504, 510, 521, 601, 604, 621, 701, 704, 721, 731, 1209, 1210, 1211, 1212, 1214, 1215, 1215S, 1216, 1218, 1219, 1220, 1222, 1224, 1225, 1226, 1228, 1229, 1229Q, 1234, 1234A, 1235, 1236, 1237, 1239, 1241, 1242, 1245, 1246 and 1249.    


Turntable replacement neoprene rubber belt

How to replace a drive belt

Replacement drive belt (BELT29) available for 9.50 + 1.50 (UK p&p) = 11.00
Replacement pitch belt (BELT2) available for 8.50 + 1.50 (UK p&p) = 10.00
Or buy both together and save on the postage.

Download our Order Form or order by phone or online from our secure gbaudioshop

Terms & Conditions of sale.

Turntable Class by GB Audio - YouTube service tutorials for the Dual CS505 includes some guides which are the same or very similar for the CS504.
Please let us know if you find these tutorials useful and support us by subscribing for free to the GB Audio channel.

Dual CS505 basic service introduction
Basic Service introduction

Dual CS505 adjusting transit screws
How to adjust the Transit Screws

Dual CS505 setting the tracking weight / tonearm balance
How to set the tracking weight
Dual CS505 replacing the pitch control belt
How to replace the pitch control belt



Q1. How do you get the turntable off to change the drive belt? I think mine is stuck because it won't lift off of the spindle. G. 06/10/20

Answer: Don't pull it! The CS504 has a unique system for removing the platter. First lift off the rubber mat - you will need to gently peel off the centre section which is glued on to the platter with rubber adhesive.

Then line up the platter so that the inspection holes are at Left and Right (or 9 o'clock and 3 o'clock) positions. Through the left inspection hole you will see a small brass screw head in a slot. Loosen it by a half turn anti-clockwise and then slide it to the left, as far as it will go.

Dual CS504 platter release screw Dual CS504 platter locking shaft

Now the platter will lift up and out, including the spindle and bearing. Flip it over so that you can fit a new BELT29 on to the drive hub. Take care not to touch the bearing, except to check that it is sufficiently lubricated before turning it back over and replacing it.

Dual CS504 platter inverted

Then line up the inspection hole with the speed changer and fish the belt over the motor pulley and under the speed changer arm. Give the platter a manual spin to ensure that it runs freely. Replace the rubber mat to complete the job.

If the pitch control does not work, follow the CS505 video tutorial above.


Useful vinyl and hi-fi accessories:
Turntable replacement neoprene rubber belt other turntable drive belts
Audio-Technica AT95E phono cartridge  Audio-Technica cartridges and styli
HS4ULM phono cartridge headshell for standard Japanese turntable tonearms Headshells
Custom audiophile headshell - cartridge leads Cartridge link leads
BT-26 RIAA phono pre-amp Phono pre-amps to connect your turntable to an amp or PC with a line input
AC-1 USB audio capture device. Analogue to digital converter with built in RIAA phono pre-amp USB converters to digitise your vinyl via your PC or laptop.
Filters, recording and other Hi-Fi accessories
Three part service and set up on the Thorens TD150 Mk2 VIDEO TUTORIAL. Introduction and three part comprehensive service and set up on the Thorens TD150 Mk2
How to change your drive belt on the Dual CS505 VIDEO TUTORIAL. Dual CS505 basic service: set the transit screws, remove the headshell, replace the stylus, set tracking weight, replace main belt, replace pitch adjust belt.
How to change your drive belt on the JVC L-A11 VIDEO TUTORIAL. How to replace the drive belt on a JVC L-A11 https://youtu.be/vy0i1OsKhRQ
How to align the cartridge, adjust the tracking weight and set the anti-skating on the JVC L-A11 VIDEO TUTORIAL. How to align the cartridge, adjust the tracking weight and set the anti-skating on the JVC L-A11  https://youtu.be/q6MSN4Gg_cs
How to change the drive belt on a Marantz TT5005 turntable VIDEO TUTORIAL. See how quick and easy it is to change a turntable drive belt: https://youtu.be/v23VXCg07HY
How to change your drive belt VIDEO TUTORIAL. See how quick and easy it is to change a turntable stylus: https://youtu.be/zYwmPbTVaQc
How to measure and change the drive belt on a turntable VIDEO TUTORIAL. See how quick and easy it is to measure and change a turntable drive belt: https://youtu.be/eimUOnn4Q0w
How to measure and change the drive belt on a Logix 330D DVD player VIDEO TUTORIAL. See how quick and easy it is to measure and change a CD or DVD tray drive belt:
How to measure and change the drive belt on a Logix 330D DVD player VIDEO TUTORIAL. See how to replace a counter drive belt on a Revox B77
How to replace a VCR eject load drive belt VIDEO TUTORIAL. See how to replace a load/eject drive belt on a Hitachi M830 VHS video recorder
Dr Know's Turntable Clinic Dr Know's helpful advice for diagnosing and servicing your turntable and cartridge.
High grade custom lead making facility

High grade custom lead making facility

Our cable-making service can build bespoke, specialist audio leads to your specification.

Buy with confidence.  Unsolicited Customer Quotes:

"Thank you for your reply, but the drive belts arrived Saturday morning. All is well with a turntable which has not been used for 30 odd years. Already played a couple of albums. Thank you for your prompt service. Very Best Regards" R EBBS (16/03/2020)

"Hi guys, Just a quick thank you for the timing belt fort the CS505. It arrived the next day and is now installed and working  (helped by your video!). Thanks again. Cheers",
Dick (09/02/2019)

"Thanks for the advice on the sticky microswitch. It was not engaging properly. Wd 40 sorted it , all good. Thanks again". Lewis Lyell (08/01/2019)

"Thanks a million for this reply. I tried it over the weekend, and it was the switch that was stuck. I was able to clean it and it works perfectly now! Thanks again, husband is delighted!" Trish M (07/01/2019)

"Dear GBAudio, Just to say thank you for your prompt help and service. With the help of the DIY video and your advice as to the right belt for my Dual turntable I was able to fix it myself (I have never dared fiddle with my Hi-Fi before as I was afraid of damaging it). Belt fits fine and it plays LPs again. The best 10 I have spent on audio.
Well done!" A Freer (31/12/2015)

"Thanks very much for this, it's very helpful... I am most grateful for your advice." D Scott (21/02/2014)

"Hi, Many thanks for your excellent efficient service.  The replacement belt is working well. Regards" C. Cox (15/06/2012)

"Many thanks for the excellent customer service. I will gladly buy from you again. Best Regards", J Houston (07/04/2012)

"To thank you for the excellent turnaround on the item I purchased on Tuesday January 3rd. - an item which I ordered on your advice. It was delivered on Monday 9th. which, considering that Friday 6th was a national holiday here in Spain was sooner than I expected. The item is working perfectly. Many thanks". E Robinson (11/01/2012)

"I sent off my order form for a replacement turntable drive belt on Tuesday; on Thursday it arrived. Followed very clear instructions to get the right size drive belt; new one works perfectly. An exemplary service. Thanks" J Rizq (14/09/2011)

"That's brilliant! Thank you so much for the excent and speedy service. Best wishes," L. England. (03/09/2011)

"Thanks for the easy to use website" P. Collins (05/07/2011)

"Nice one, left message on Sunday, GB Audio called me back just after 9am on Monday, had drivebelt and turntable up and running on Tuesday. Couldn't have been easier or faster. Loved the Replacement Drive Belt selection table and guide, superb: http://www.gbaudio.co.uk/data/belts.htm H Wood" (12/04/2011)

"Thank you for the speedy service. I ordered the belt yesterday over the telephone and received it this morning. It works and fits well. Regards D Ewers" (22/03/2011)

"Many thanks for your help , the band arrived and fitted perfectly. My elderly father is now happily listening to Bach again! Cheers Ellen" (12/03/2011)

"Thank you GB audio, great service, only a replacement drive belt but arrived first class post next morning, have deck working again after a very long time. Already singing your praises. D Terry" (01/02/2011)


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Third Party links:

Sound Fountain - Excellent turntable adjustment and set up guide inc cartridge alignment  Sound Fountain - Excellent turntable adjustment and set up guide inc cartridge alignment

Audacity Sourceforge free recording software

Find a turntable or hi-fi audiophile specialist near you:

www.hificorner.co.uk Edinburgh

www.loud-clear.co.uk Edinburgh

New Audio Frontiers Loughborough

www.obrienhifi.com London