It is a real shame I don't use my four 12" drivers :cry: The options were open baffle or infinite baffle. I don't want to get into the necessary EQ required to make them work in OB. True infinite baffle (mounted in a wall or floor with the backwave having at least 10x the Vas of the driver) was...

Latteman wrote: ↑Mon Oct 04, 2021 7:54 pm Hey Stu- do u do WhatsApp

What's WhatsApp ? I do messenger sometimes which is an extension of Facebook

Have U heard the isobaric clam shell ? Yes Peter, I used to have my doped 12 inch drivers in clamshell isobaric. It worked really well and was never the issue with those drivers, the issue being the Qts and Vas were so high I couldn't get the box small enough to be domestically acceptable without a...

New design. Using isobaric in clamshell configuration for both up and down firing. I have hidden the two out facing magnets in the hemisphere and the tweeter sphere :dance: So there are no legs of any kind required, even between the three diferent parts (hemisphere, mid bass sphere, tweeter sphere) ...

I should have realised but passive radiators work best with low qts drivers ie ones which work in vented boxes. That would make the B&W drivers suitable for a PR. Not sure I can be bothered to take it any further. Other thoughts have been to trying to try and use a 6.5" as a down firing dri...

"I like transmission lines so maybe the bass response with a passive radiator would not be too much of an issue for me (if designed properly) however it maybe a solution looking for a problem. Which is the more evil - a passive radiator or a phase changing filter ?" I have to say that my ...

Happy birthday Latteman. Peter, you are a smasher

Having now read a bit about the behaviour of passive radiators I am suitably put off the idea. They require tuning like a bass reflex and have a high mass which can be altered by adding more mass to change the Fs or Fp to be more precise :grin: You generally choose a diameter a bit wider than the ac...

Yesterday I cobbled together a speaker using my spare pair of 17 litre cubes. I put in my pair of B&W 6.5" mid bass from my P4 transmission lines and plonked the tweeter spheres just behind the up firing mid bass. I borrowed the inductor from the P4's for the low pass and for the high pass ...

Is that 42-0-42V with taps at 21V ? I expect once rectified it will be enough to launch those amp boards into space

Hope you are having fun.