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Old 25th September 2005, 03:03 AM   #1
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Location: Dallas, TX
Default One side finished in raw MDF

w00t w00t...

For those following my project, I decided to go with a shorter Mid/tweet panel 19.5" wide x 18" tall with a 6" floor instead of the 19.5" x 24" with side panels. BDS and my cardboard work showed very little difference between these two designs and the new one had a smaller midrange peak to equalize so i decided to go cut some MDF.

First piece - I completely screwed up the recess for the tweeter.. Those damn squares are awfully hard to cut.

Second Piece - Ribbon recess came out nice, however I measure the diameter for the PR170 at the face. Turns out it has a slight taper to the frame and the bottom is about 1/16" larger so it wouldn't fit.. I had to go at the recess freehand and its not exactly circular anymore... Oh well call it a test baffle Hopefully I'll make 2 more sunday.

Been listening for the last 2 hours and it sounds awsome.. Picked up even more detail than I was hearing with the cardboard baffles, the sound is incredible, very light and detailed.

The measured pretty well too, flat from 20k to 25hz with a slight dip around 250hz (~3db) very sharp too, not really sure where its coming from, can room nulls be that sharp? the total width is like 1/6 octave...

Comments welcome, I'm listening to some old school REM right now, Eagles live is next on my play list..

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Old 25th September 2005, 03:45 AM   #2
mac is offline mac  United States
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Looks really nice. Are you compensating for driver offset using delay or all-pass circuit? Getting that just right can make a big difference in presentation.

As you can see I've been busy today too...

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Old 25th September 2005, 03:49 AM   #3
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I'm using a DCX2496 for cross over and delay compensation.

I love the "clamp re-enforced bracing" you've got on there What woofers did you use? Looks like modern art to me, "form meets function"?

--Chris
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Old 25th September 2005, 03:55 AM   #4
mac is offline mac  United States
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Good deal - I'm using a DCX too.

The clamps are only temporary until I install the sides tomorrow. The woofers are the new Dayton Reference subs. They are quite impressive and performing better than I even hoped. I only went with them because the XLS' woofers are difficult to acquire at the moment.

Keep us posted of your progress!
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