Simple is often best. The 505’s share the same front baffle as the 8” bass driver, the 15 litre box houses the power supplies and crossover. Martin’s comment is below.

Hi Rob,

Just wanted to let you know that after about two years I finally got around to building my speaker boxes and putting them all together. I’ve attached a photo.

I’ve been listening to them for about two weeks now and I have to say they sound great. They have a big sound for a relatively small speaker. No doubt they will get better as they break in.

Thanks for going the extra mile and making the kit as ‘plug and play’ as you could. It went together perfectly.

All the best,   Martin