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How to change Cirklon's internal battery

  • Cirklon's battery was type CR2032 until 2024, when we changed to type CR2450.

    A 2mm hexdriver or allen key is needed to unscrew the Cirklon metalwork.

    BATTERY CHANGE VIDEO LINKS:

    Original Cirklon model # 01 - #109

    Original Cirklon model #110 – #1353

    Cirklon2 model

  • Some earlier production Cirklon 2s have developed a problem with the backup battery holder detaching from the mainboard, usually discovered as the owner tried to replace the cell.

    Owners who encounter this issue should email support@sequentix.com to arrange for repair under warranty. There is no time limit for this, as it is a production issue.

    Current production has switched to a larger CR2450 cell in a through-hole holder to eliminate this problem.

How to solve PSU issues

  • If your PSU is having contact issues, check if the power socket on the Cirklon has the centre pin squeezed together. 

    The pin is split into two halves to contact the inside of the barrel plug.

     

    Sometimes inserting a plug at an angle can push them together enough to make for poor contact.

     

     

  • Compare your socket to this photo.

     

    If the gap in the pin doesn’t look as wide, you can spread it apart by gently inserting a screwdriver or the tip of a knife into it.

How to fit a CVIO board

  • A basic model Cirklon can be upgraded by fitting a CVIO board inside the Cirklon.

    Fitting the CVIO board yourself is quite straight-forward if you have basic technical skills - no soldering is required.

  • This tutorial video demonstrates the installation procedure.

    The CVIO board is available in our online shop.

How to change Cirklon from desktop to rackmount

How to install the latest Cirklon firmware

  • You can download the latest Cirklon firmware update from our forum.

    Once the file has been downloaded, the update can be installed via SD card or MIDI sysex transfer.

  • This tutorial made by Cirklon owner Charlie Norton shows the process of backing up and updating your Cirklon.

Local Cirklon repair partners

  • UK

    Audiocircus Ltd
    6 Blackstone St
    Blackstone
    Henfield
    BN5 9TH
    UK

    Contact: Rob Hukin
    rob@audiocircus.co.uk
    https://audiocircus.co.uk/

  • USA

    Low-Gain Electronics
    Logan Erickson
    United States 

    Contact: Logan Erickson
    lowgainelectronics@gmail.com
    www.low-gain.com

  • CANADA

    Synths When
    74 Wade Ave
    Toronto, ON
    Canada
    M6H 1P6

    Contact: Jay Lemak
    repairs@synthswhen.com
    www.synthswhen.com
    Tel: 647.300.5502