RSS315HF-4 as the anchor of a 3-way???

[Pete Schumacher]

Re: RSS315HF-4 as the anchor of a 3-way???

Thanx Pete. I guess i'd be targeting the 1.5-2khz range? Keeping the active slope should provide a better blend to the mains i suppose, and probobly less components for a notch to boot!:D Any values in mind?

.6 mH 20ga and 15uF should do the trick.

[Mayhem13]

Re: RSS315HF-4 as the anchor of a 3-way???

Thanx Pete. I guess i'd be targeting the 1.5-2khz range? Keeping the active slope should provide a better blend to the mains i suppose, and probobly less components for a notch to boot!:D Any values in mind?

[Pete Schumacher]

Re: RSS315HF-4 as the anchor of a 3-way???

Hey Pete...i'm working on my RSS315HF-4 cabs now at 100L tuned to 23hz and they'll be the active stereo bottom of.....well....something as of yet undecided but here's the question. They'll be driven in stereo actively with an NHT B-20 Pro subwoofer amp which will be capable of 400w at 4ohms RMS. The amp is equipped with a selectable LP filter 12db/oct with the max setting of 230hz.....and that's where i'd like it to be but i'm concerned with the cone breakup. I suspect these will be topped with a serious pro driver MT section and will be called upon for high output for HT. Do you think i'll need to add some passive components to steepen the LP slope to maybe 24db oct or will 12db/oct be fine?

With that particular XO point and slope, I doubt you'd notice any resonance issues under normal music. I didn't have the notch at first when I was voicing the original XO, and I wasn't aware of any problems. But when I pushed the XO point up past 250Hz, I figured that I'd add a little insurance in the final XO, just to make sure.

You could easily add a simple parallel notch in series with the woofer if you're concerned.

[Mayhem13]

Re: RSS315HF-4 as the anchor of a 3-way???

Hey Pete...i'm working on my RSS315HF-4 cabs now at 100L tuned to 23hz and they'll be the active stereo bottom of.....well....something as of yet undecided but here's the question. They'll be driven in stereo actively with an NHT B-20 Pro subwoofer amp which will be capable of 400w at 4ohms RMS. The amp is equipped with a selectable LP filter 12db/oct with the max setting of 230hz.....and that's where i'd like it to be but i'm concerned with the cone breakup. I suspect these will be topped with a serious pro driver MT section and will be called upon for high output for HT. Do you think i'll need to add some passive components to steepen the LP slope to maybe 24db oct or will 12db/oct be fine?

[Pete Schumacher]

Re: RSS315HF-4 as the anchor of a 3-way???

Did you ever get any pics of these to post ?

Btw that spltrace link you sent me worked very well. Thanks again so much

You are most welcome. I found that on this forum, just like you.

No pics just yet. My camera sucks, so I'll have to wait until Ryan comes by with his professional optical capture device.

[DjDisturbed]

Re: RSS315HF-4 as the anchor of a 3-way???

Did you ever get any pics of these to post ?

Btw that spltrace link you sent me worked very well. Thanks again so much

[Pete Schumacher]

Re: RSS315HF-4 as the anchor of a 3-way???

Finally got the finish on the Byzantiums.

I used Formby's Tung Oil/Varnish, low gloss. I put two coats on, then steel wool, cleaned, two more coats, steel wool, and then one more coat, and a final coat thinned out with a bit of paint thinner. Nice, smooth, uniform finish. My wife is really pleased with the way they turned out. I even impressed myself, being a total noob when it comes to finishing veneer.

Home stretch . . . now I just need some feet or a platform to finish them off. And I've still not decided on the finish for the back of the box . . .

I'm pooped. Time for bed.

Just gotta talk Ryan in to coming over with his camera so I can get a few nice pics of the pair.

[anunnaki]

Re: RSS315HF-4 as the anchor of a 3-way???

I wish I could but I cannot get a trip there into my schedule. :(
It really is not that far away though. Perhaps next year...

[Pete Schumacher]

Re: RSS315HF-4 as the anchor of a 3-way???

Nice work Pete! Great to hear that you have the x-over squared away.

Please keep us posted. I want to see some finalized pics! ;)

Come to Iowa and let your ears see them in person . . . ;)

[anunnaki]

Re: RSS315HF-4 as the anchor of a 3-way???

Nice work Pete! Great to hear that you have the x-over squared away.

Please keep us posted. I want to see some finalized pics! ;)

[Pete Schumacher]

Re: RSS315HF-4 as the anchor of a 3-way???

Wow - these are looking fantastic! Are you keeping these or are they built for someone else?

These are keepers!!! :D

[superspeeder]

Re: RSS315HF-4 as the anchor of a 3-way???

Wow - these are looking fantastic! Are you keeping these or are they built for someone else?

[Pete Schumacher]

Re: RSS315HF-4 as the anchor of a 3-way???

Well, I suppose a crappy picture from my cheap camera is better than nothing. Here's a shot of the finished cabinet side. It's gorgeous!!!

[Pete Schumacher]

Re: RSS315HF-4 as the anchor of a 3-way???

Pete, your project looks a lot like this one I just stumbled across.

http://elfranche.stormpages.com/

Any more changes after another week of listening?

Wow. Isn't that something? Similar mid, Dayton Reference Sub, 15" PR. I like the looks of mine better though.

Nope, no changes. I like them where they are more than any other previous setup. It's really nice having a simple way now to adjust the mid level to suit the room. But I think I've found the stopping point.

I've gotten a few coats of tung oil/varnish on one cabinet now, and rubbed with steel wool. One or two more passes and I'll consider it done and move to the next enclosure. I'm not looking for a glossy finish by any stretch, just smooth and natural. Also got the mid chamber on this enclosure treated with a couple layers of roofing felt held in place by some spray adhesive. Two braces using 3" wide, 3/4" thick solid oak planking will be added to each cabinet to reduce what minor panel resonances there are.

[jonasz]

Re: RSS315HF-4 as the anchor of a 3-way???

Pete, your project looks a lot like this one I just stumbled across.

http://elfranche.stormpages.com/

Any more changes after another week of listening?