Jims 3 way speaker build

[Chris Roemer]

NO ONE would recommend running any type (size) of resistor in series w/a bass driver.
If you've got accurate .frd & .zma files, then there must be a way to get an identical(ly shaped) FR in an XO sim by unpadding (& / or changing the filters' transfer fns (shapes)) the other drivers, with the curve just a few dB higher - across the board.

[jimbones]

Oh I agree I think I just bought a woofer that is too efficient. I unpadded the mid a tweet and they are loud. I'll try again. There is a 4 ohm on the mid and a 2 ohm on the tweeter that I will remove along with the 3 ohm on the woofer. I totally agree that having the 3 ohm on the woofer is wrong, I just experiments to get the right balance. Now I have to figure how to unwind it.

[Wolf]

One more question, are these close to the front wall still, or are they pulled into the room?
Against the front wall will heavily load that woofer like you are describing.
if you are pulled out from the wall, try placing them 6-8" above the floor on a short stand.
A cinder block can work in a pinch.

Wolf

[jimbones]

the speakers front plane is 6 feet from the front wall (the room is 22 ft long) so i try to be approximately 1/3 into the room. I like the idea of getting them off the floor. will 8 inches be enough? I'll have to make something up. I have to protect my back. I'll get a buddy to lift for me lol. Ya gotta have friends

[jimbones]

Hi all, sorry for the delay I was sick with COVID really bad, hospitalized etc. Was the roughest and Ive had it more than once. Ugh!! Anyway I am close to completing this project for the time being. I am refining and not making any big changes to the XO. I will post as soon as it is done, done. I have moved the speakers and have gotten the series resistor down to 1.25 ohm. I'd like to remove it completely and will consider that a future effort. I did have to slightly pad the mid and tweeter. Not sure why as you would think that if I just remove the woofer series resistor I would be able to remove all padding on drivers but it sounds like poop when I do that. I did not raise the cabinet off the floor yet. I did however find out that the cabinet plinth was flexing under cabinet load so it was not making a solid foundation for the speaker so I have to rework it so I get good coupling with the floor. You guidance and suggestions are appreciated and thanks to all.

[jimbones]

attached are the schematic and frd curves. Note that the sub is included on the extreme left.

[jimbones]

Another (Important) update: Well all this while we have been perplexed with my assessment of the quantity and quality of the bass performance. It turns out that I had bad tubes in my preamp. After 2 hours of listening the other day it went from bad to worse where I could no longer ignore it. I replaced the tubes and WOW what an improvement. The bass quality is good albeit a bit much, but it is more tolerable than bad bass lol. Also it matters what amp is on them. I just switched to a Benchmark amp and bass levels are perfect. With the Peachtree Gan400 there was too much bass. As I dig into this more I'll report back. Thanks All.