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PRO9-TL quarter-wave Transmission Line Loudspeakers

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Item Condition: Used
Shipping Options: Pickup available and you can audition.
Suburb or Town: Ferndown
Payment Method: PayPal or Cash on Pickup
Reason for selling: Upgrade

I am reluctantly selling a pair of original Chris Rogers PRO9-TL quarter-wave transmission line loudspeakers finished in teak wood veneer.  These are the actual speakers that have featured in many of my reviews for Hi-Fi Choice magazine over the years. Based on the original Rogers’ design from Practical Hi-Fi and Audio, October 1976, these speakers have been significantly upgraded over the years with new Audax HD12 tweeters fitted with Russ Andrews’ Focus Rings and new Peerless K040-MRF midrange, all replaced recently.  The switches of the crossovers have been removed and then completely rebuilt with audiophile components throughout, including ClarityCap polypropylene capacitors, Mills audio grade resistors, and Mundorf 99% silver/1% gold wiring.  I am finally selling them as I needed to get some smaller speakers!


The cabinets are in good condition for their age.  The teak veneer has bubbled slightly in places but has been well looked-after with wax and teak oil. Collection only from Ferndown in Dorset.

Photos attached.


PRO9TL Crossover.JPG




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I built a pair of these many years ago and regret selling them…… I needed the money 😂

fantastic sound and a great bottom end.

fabulous price



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Fantastic looking and great sounding speakers.


Many years ago I had Chris demonstrate his pair to me with his SIRAC Amp, but I remembered a different tweeter, a KK8 sticks in my mind.


If they had been in Australia I would have bought them without a doubt.





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