Old Akro
Check ebay for the comfort gel seals. Ebay.com rather than ebay.com.au gets better results. Or get them from Skylines.
Thanks, & Wilco
Squawk7700
I upgraded my DC 13.4's years ago but I was never really over the moon about them because when you fit the new speakers they are bigger and you have to remove some of the foam from the ear cups to get them to fit in, so if you have a flat 9v battery in your box (and no spare) then you literally can't wear them as it's too noisy (subject to aircraft type of course).
Are the 13.4 shallower cups than some others, (like the 10-30s)?
I hope so.