Post by: ildefonso garza jr. on April 16, 2006, 03:30:33 PM
Post by: Lee Jacobson on April 16, 2006, 05:32:00 PM
BTW, nice finish. Line-x?
Also, I NEVER do this, but there are rules. Full name, etc. You may go by "jr" but to some, that may not be enough. I have known folks who went by "jr" to the point where their friends didn't even know their name, alas "real names" are req'd to post, yadda yadda....
Post by: ildefonso garza jr. on April 17, 2006, 08:19:24 PM
Post by: Dave Rickard on April 17, 2006, 10:10:37 PM
http://www.peavey.com/support/technotes/soundsystems/boundar ycancellation.cfm
Dave
Post by: Clive Milne on April 19, 2006, 06:04:42 AM
Post by: Too Tall (Curtis H. List) on April 20, 2006, 11:12:28 AM
| ildefonso garza jr. wrote on Sun, 16 April 2006 15:30 |
hello, here are 2 of 4 lab pics, later will post build process pics,have used twice really and not to impressed,expected more from readinging this forum!!!possible using wrong settings on my drpa?? but asked for basic settings on posteq like f1,f2 Lsheilf etc. but no help on that end; will keep trying different settings still have some hope to make them sound good!!!!! powered with 2500@2ohms/box.... |
First things first.
Let’s make sure there is nothing wrong with the box (leaks), drivers (voice coil bad from the factory) or wiring (One or more drivers not hooked up or reverse polarity)
.
Do you own Smaart or anything else that can measure the impedance curve of the box?
Perhaps a friend owns something you can use?
If you find something measure the boxes wired together the way you run them and then each box by itself.
Next for drpa you will need some delay on the lows, mids and highs. From your pictures it looks like the rest of the PA is horn loaded to some extant. Looks like the bottoms have a horn maybe 24” deep? Hard to tell from the picture.
Anyway the drpa was a little short on the amount of delay it could process last I knew so the horn load on the rest of the PA will help. You may have to physically move the speaker components to make it line up.
BTW were you doing subs on either side with the stereo mains?
Again it would be best if you used something like Praxis or Smarrt to line up PA in time.
As for using someone else’s settings for your system IF your bottoms and mids were front loaded you might have a shot. With them being horn loaded with a short horn you are on your own.
For instance if you measure the bottoms you will see a peak on the high end of their range from the horn and then a steep drop where the wave lengths are too long for the horn. Also the phase response on your horn loaded bottoms and mids will be different then a front load.
IOW without some way to measure time and look at phase you are guessing blind.
Then you have the room and where your subs are setup.
Post by: Bogdan Popescu on April 20, 2006, 01:52:35 PM
Problem was solved by finding a different position.
Please describe how do they sound.
Bogdan
Post by: ildefonso garza jr. on April 20, 2006, 02:08:28 PM