BillFitzmaurice.info

The T45's are finished! (Minus paint..) Still Whoop Whoop!!! Couple of pics along the way.. 20180705_084216.jpg How to un warp panels while fastening.. 20180707_183937.jpg My evening treats to listen to England get knocked out of the world cup :roll: 20180711_185451.jpg Primer applied... 20180712_08...

Bruce Weldy wrote: ↑Thu Jun 14, 2018 7:38 am

AKC1 wrote: ↑Thu Jun 14, 2018 2:29 am

Bruce Weldy wrote: ↑Wed Jun 13, 2018 6:17 pm That plywood sure looks like it has a thin veneer.....hopefully, that's just the pics.

it's not

Then I'd suggest that you leave all of the screws in the cabinet.

Yep will do, have run this by Bill already. It looked perfect in the dark warehouse

Bruce Weldy wrote: ↑Wed Jun 13, 2018 6:17 pm That plywood sure looks like it has a thin veneer.....hopefully, that's just the pics.

it's not

And finally this is why you don't want to use cheap plywood...
Absolute nightmare trying to get all the warp out! #WonkeyDonkey

I'm still alive! Just... As the deadline of the party moves closer I am realising the OT12's are not going to be done :( They are now officially on hold until further notice. Things on the T45 front have been coming along well though. Here is some modern art I created along the way, the piece is cal...

Finally finished all the rough cutting! Phew.. All went smoothly and have managed to get the hang of plunge cuts too.. 20180601_215353.jpg First joints have been made and todays allocated time has been spent cutting the baffles ready for assembly hopefully tomorrow. I feel I may need to warn you all...

In my DR250 build thread (see sig) I originally had the same plans as you to go 2-tone paint. I ended up just using a single color and am glad I did. Looks WAY better (IMO) and WAY less work as I already had at least a hundred hours on paint for the 8 of them. Take a look.. Hi sorry for the late re...

Bill Fitzmaurice wrote: ↑Sat May 26, 2018 8:29 am I've never had the urge to do a synergy horn, as most of its benefits are also in the OTop, Jack and DR designs. The synergy is different, but not better.

True, i hadn't thought of it as they look so different.

See what you mean about Pure Groove. Those are good looking speakers!
Bill, I noticed they do a synergy horn. Is that style of speaker a Danley patent or in theory could you design us a nice one for us all to build?

Alex

bitSmasher wrote: ↑Fri May 25, 2018 7:21 pm Been looking at Pure Groove systems, for the colour inspiration?

Have never heard of them, will see what Google has to say

Just keep cutting, Just keep cutting...

Meanwhile been thinking up a colour scheme, what are your thoughts??

Tell us how it goes. If it drives you nuts in the end, build the internal passive filters for the tops, which does what you want to try to achieve via DSP. Remember, the passive filters are custom for Bill's designs, and address the issues of phase. And negate the need to bi amp... Definitely :cowb...

I will basically be tuning as per this article (See page 2 and on) https://www.prosoundweb.com/channels/av ... s_in_sync/ except I will be using RTA to make results more accurate.

Set EQ per driver then adjust phase to match.

Alex

Maybe in the electrical world, but in the physical acoustical world your drivers and their enclosure alters the phase response and the magnitude response - sometimes drastically. Once that electrical signal goes to your voice coils and gets converted into motion, everything changes. Until you measu...

My thoughts: Phase is frequency dependent. Therefore, the only delay you can add is at a crossover point (subs to tops), so you can then check phase response (unless you want to go to FIR filtering). Subs and tops need to be in phase at the crossover point. Mids and HF need to be in phase at their ...