hifi engine

Manual Library / Dynaco

Dynaco QD-1

Quadaptor (1972)

add a review add a review

Dynaco QD-1


The Dynaco QD-1 Quadaptor serves as a junction box between the outputs of a conventional two channel stereo amplifier or receiver, and four loudspeaker systems; it is a passive device requiring no AC adaptor.

The Quadaptor provides the simple but essential circuitry to recover four separate signal components from two stereo channels utilising the Dynaquad system.

It facilitates accurate electrical balance in the system to attain maximum separation.

It also provides for listening to the front speakers alone as conventional two-channel stereo.


Related Catalogues


If you have any problems opening files please read the download FAQ. All files are provided under strict licence and reproduction without prior permission or for financial gain is strictly prohibited.

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



What a wonderful surprise to find an owner's manual for a 40 year old piece of gear and a schematic as well. I am very happy and excited with HIFI ENGINE.

This website is not affiliated with or sponsored by Dynaco. To purchase QD-1 spares or accessories, please contact the company via their website or visit an authorised retailer.