Ok sure I understand. Bass is always an issue. The adjustable bass units in my new speakers have solved all of those issues but clearly they are hard to build expensive and way too big. It’s hard to imagine that there is much difference between the flex and the 9800. What the reason for not choosing that one? Are you planning on the bass cabs eventually?
You’re right, not much difference in the bass response, well not compared to the CNO which goes a fair bit lower I think. I did want the flexibility if I moved rooms to add the TL. Though it isn’t a trivial addition, most of the crossover changes IIRC. The 3 way definitely wouldn’t fit in the current space, it’s over 400mm deep!
I sense you’re trying to save me from myself attempting that baffle!? X)
It’s not so much save you from failure as I’m sure that you would get it right if you tackle it methodically and slowly. I suppose I’m just thinking of all the factors. In particular the fact that it’s a first attempt but also that you aren’t doing the bass cabs later. I do think it is likely a really good sounding speaker as i have read Troels’s praises of it many times. At one time i wanted to make it but i would have used real wood for the front baffle and a white or black rear cab made from MDF. I will say that after building mine, the chamfers are not as difficult as i thought they would be. Although I’m not sure if that is because i have also gained more experience with woodworking.
1 Like
Cheers Mark, appreciate all the advice 
I was thinking of a trial baffle (or two 
) in plain MDF before the final choice too.
I haven’t entirely ruled out the TL bases, just that the current location won’t work. In fact a transmission line design was what got me interested in all this in the first place. I read the book below to learn about the various speaker types and some basic design principles, in the back there’s a TL design to make. The other book pictured was apparently what Julian Vereker used for the first NAP160
2 Likes
Love the books! I’d love to have a read of those. It will be good to see the build process whichever you choose. I am going to rebuild my original Ellam xt bookshelf speaker soon. I have some maple veneer left from the other speakers so I’m going to use that. Am I correct that you are going to use paint to finish?
As I lack any artistic ability I was going to do them exactly like Troels! Bare Baltic birch ply with some wax, or other basic treatment. Baffles painted black.
Or get my kids to paint them X)
Troels has four more designs out. Two stand mounts and two floor standers, he’s been busy!
The new Illuminator-71 looks really nice, as does the Purifi-6R.
Someone needed to post to keep this thread open
Cheers,
Mark
2 Likes
Oooh, ta for heads up, particularly interested in stand mount options! Off for a look
Yes they do look nice, I had been looking for a recent stand mount design on there as something to try before …
@Mark84 I’ve made a start 
Cheers,
Mark
Yeah I have seen these new designs. I cannot believe that he has managed to make something as cheap as the PCFR, if that’s what it’s called… I almost want to make it to try it and then give it to a friend or something. Also the new purifi floorstander looks and sounds (as discribed) amazing. Those drivers look pretty quirky.
Yes that’s an amazing price really, especially given his surprise at the sound quality. Roughly £300 
The purifi floor stand does look very good, and can have the benefit of the amp like your speakers.
Cheers,
Mark
1 Like
This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.