Originally Posted by MKtheater
That is what I thought! I think your subs look great and you did a great job. What was the total cost of the system? How do you like the JBL pro speakers? Those are the 3677's? As big as they are they are the babies!
Thanks for the compliments.
The best way I can describe the difference between the 6 18's and the 4 15 PSA subs, as I'm sure most of you know, is bold letters
vs. letters that aren't bold. They both say the same thing. One just does it with more emphasis and authority.
$2446.00 total. That doesn't account for any tools I didn't have. Router, bits.... etc...
I like the JBL 3677s. I think they are a great value and once properly dialed in I am able to listen at reference without any being fatigued throughout an entire movie. Before I dialed them though.... they were bright. All I did to dial them was change the capture time MCACC used when going through the pro EQ setup. Since I'm 90% movies these JBLs are perfect for me and my 2200 CF room.
Originally Posted by steve nn
Yes the PSA subs are much better with more output aren't they.
WOW pd, would you look at that graph.
So glad this finally worked out.
EDIT> How did you square up the cross? was it a filter?
Actually.... thanks for pointing that out. In all of my tweaking I completely forgot to raise the sub trim back up to 75 db.
When I did that this morning the xover point looked worse by the amount of DB I had to raise the sub trim to get 75.
So I started over, which turned out good because I was able to double the sound out of the front two cabinets which enabled me to ultimately turn back the sub trim for the same 75 db output. This is good thanks to the mini-dsp inputs being so sensitive.
Ended up with similar results in my seat, and a bit worse results in the two seats next to mine. A couple 10-13 db peaks from 50-60hz. I'll work on it.
The main thing is I know it's just a matter of finding the right volume and delay settings. I didn't have time but it's very likely I can take the one notch and one boost in this graph out and get better results at the other two seats. I know it's certainly doable at my seat.
Originally Posted by beastaudio
for sure, the crossover region looks worlds better. What was the special sauce? Delay settings?
Delay and level volumes is the key. As I said above to Steve I can get this level within +/- 3 using no filters. I can also shape the FR with level and delay into a house curve, using no filters. For now this is what I've got in the mini-dsp. I have the exact same program but with a 25Hz 5DB shelf filter. I left it out for now since it induces more ringing on the waterfall graph.
One is reference and one is subs 10db hot.
I actually dropped it down 2-3 DB from here while listening to some demo material. I don't know if it's because I'm not used to the rear near field subs or maybe the spl meter is reading a bit hot putting me a bit over 75 db when I think I'm at 75 db..... but it just sounded better.