All systems go !
All systems go !
DRIVE UNITS BY MANUFACTURER:
HD-3P Kit-1

The Audax HD-3P tweeter was a piece of exotic, visionary engineering from the 1990s. Fundamentally a piezo tweeter, it featured a gold spattered elliptical diaphragm formed onto a nitrogen filled balloon. Technically / sonically brilliant but fatally flawed due to gas loss and barometric pressure changes, many are now defunct with low or no output. Full details of this tweeter can be found by clicking the link below:
We offer a replacement kit for the HD-3P featuring either the Scanspeak D2905-9500 or D2904-9500 tweeter and custom built crossovers; each crossover / tweeter combination is matched and aligned to the specific application. You will need to remove the HD-3P crossover / transformer; the Scanspeak tweeters are supplied fitted with a unique 100mm faceplate and are a drop in fit, no carpentry required.
Supplied as singles or pairs, please make your selection at the top of the page. We hand build the crossovers to order, please allow a lead time of 7 working days.
Audax HD3P
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
Quick dispatch
Product as described, easy to cut & fit.
On reflection having now fitted the foam, I wish it was 15mm to 18mm or even 20mm thick. This is not a complaint. For a small speaker under 30cm high it’s perfect. For a larger speaker I feel a thicker sponge would hold its structure more pleasingly, its aesthetics, but important for the finished look.
I’ve been building my own home cinema as a complete DIY project and reached the stage where I needed some decent acoustic foam for my speaker panels (also DIY!) so I picked up 3 large sheets from here. They were sent quickly, packed well and moreover, are of excellent quality. With them being folded into the shipping box they were slightly creased but after leaving them out overnight on a flat surface, the creases fell out completely. They’re now in place and doing their job brilliantly. Cheers Willys Hifi!
The crossover was constructed well, I just need to figure out the best way to attach it to my Kef Concertos as they are bigger than the ones supplied by Kef that are mounted on the front of the baffle board.
Very nice deep bass look amazing with my custom made speaker
Great speedy delivery and very easy to fit. The plastic in my drivers had perished and they had suffered one too many parties! No need to make any adjustments (someone above did suggest that). I just screwed them in and the foam compressed into place. Before and after below (before I changed speaker number 2). Thank you!
