I am about to launch into a new 3 way project and would like to hear views/comments etc. form the forum members before I commit to the driver buy.
- 3 Way initially active with Minidsp (Nanodigi + 4xKardas Toneboard + Rotel RMB1066) then maybe passive later.
- Box size - Re-use Akai SW125 with extra bracing and sound deadening panels (bitumen) plus 25mm MDF baffle level with box edge - external 350 x 560 x 295mm (13-7/8" x 21" x 11-5/8") - approx 40litres net volume. If all goes well I may remake at a later stage but bout for pocket money and they are the size and volume I would have made anyway, I like the Monkey Coffin style.
- Drivers - SB WO24P-4 + Morel EM1308 + Morel ET448.
- Crossovers - doing some modelling in Boxsin 2.0, Vituixcad and Jeff Bagby's PCD I get good consistent result with the published data (obviously will measure and re-do) with very good phase tracking with all LR2 electrical at 700hz and 3600hz plus a tank/notch on the woofer at 3500hz and a notch on the tweeter at 4500. Mid out of phase. The crossover point are also fairly consistent with the couple of papers that Jeff Bagby produced on the EM1308 and ET448 (on DIY Loudspeaker project Pad on Facebook) which gave me some confidence I was on the right track.
- Alignment - for the WO24P-4 40l is pretty much spot on for a sealed box and also can be used as a BR tuned to 28hz giving a very slight lift at 75hz, F3/6/10 are 52/38/28.5hz and 38/28.5/24hz respectively according to WinISD.
(P.S. Also posted on DIY audio so sorry for those that are reading this twice).
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