No, but I see concrete laundry tubs for free on CL and think they would make a great sub cabinet.
Anyone work for hours then slap your head??? I did. Yesterday I gathered a bunch of caps, resistors, and coils and started experimenting with notch filters and step filters in an attempt to tamp down the horn peak so the high end roll off would be less giving the speakers more "air".
WELL, I worked at it for a couple hours and was getting strange readings. I had to see and think about it for a while then realized the day before I did some EQ to see what they might sound like and I left the EQ on!!!!
At that point I went to the house and gave up for the night. I'll hit it again this morning
WELL, I worked at it for a couple hours and was getting strange readings. I had to see and think about it for a while then realized the day before I did some EQ to see what they might sound like and I left the EQ on!!!!
At that point I went to the house and gave up for the night. I'll hit it again this morning
ok, I am happy now. So, I used a Linkwitz-riley (spell) 2nd order crossover then L-pad with 8ohms to + and 1ohm across negs, with a 4.7uf cap in parallel with the 8ohm resistor. The graph shows a good bump at 10khz but it gives these little guys a bunch of air and don't scream at all.
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I know how you feel, I was getting these strange bass peaks at 50Hz and mid bass cut at 300Hz for months until I discovered my new laptop had a resisident background SRS sound processor that applied this crappy EQ on everything.
Your new response looks great - are you still using the Dayton 3.5k XO board but just adding the 8R and 1R padding plus 4.7uF lift? Or is this a brand new custom XO you threw together?
Congratulations on the new speaker - must sound nice.
Btw, a trick to lower bass extension (at expense of sensitivity) might be to raise the woofer Q by putting maybe 1.5R in series with line from XO to woofer. Or add mass to the PR (as you are considering in another post). You can also add mass to the main woofer cone (a loop of 12 ga copper wire glued to interface of dustcap and cone).
Still using the Link/Riley 2nd order. Yes, just added the 8/1/4.7
I'll try the resister on the woof but I'll be using subs so the low end is not much of a concern. Now I have two full days of work ahead of me to make the cabs perrdy!
I'll try the resister on the woof but I'll be using subs so the low end is not much of a concern. Now I have two full days of work ahead of me to make the cabs perrdy!
By the way, it sounds great and crank really well. No break up or distortion at my highest listening level.
Now that I am working on the cabs and will be ready for final assembly Friday, do I put stuffing in these cabs when using PRs?
I would line walls with felt but no stuffing. Mr Clean Magic Erasers are also good. They are made of same material as BASF professional grade acoustic treatment foam (reticulated open cell phenolic foam). Readily available from local grocery store and really absorb well. Better than felt IMO.
If I remember correctly, those are layered. Do I just take them apart and glue them to the side like tiles?
These speakers, when new, came with fiberglass stuffing encased in a fine mesh bag.
These speakers, when new, came with fiberglass stuffing encased in a fine mesh bag.
Those Mr Clean erasers are a rectangular block. Use hot melt glue to attach. They are 1in thick so a sharp utility knife can be used to slice in half thickness. Still works well enough. I suppose adding some loose fiberglass in a sack can't hurt to absorb HF's from re-radiating back out cone.
Thanks X. I am making this purrdy today but last night I bought a box of the Mr. Clean. I was thinking about using a verable L pad but it won't fit!!!
Add a 5 way speaker binding post to the back and use to clamp on different 5w power resistors for your variable L-pad to tune the HF to taste and occasion.
This unit holds cement resistors perfectly.
Parts Express Gold Plated Banana 5-Way Speaker Wire Binding Post Terminal
This unit holds cement resistors perfectly.
Parts Express Gold Plated Banana 5-Way Speaker Wire Binding Post Terminal
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