What about below 150Hz? How are you going to to get sub 150 to match above 150? If you intend to via EQ, what's the point?
I did some quick sims last night, but with the FP you mentioned I get large cabs ~7cf, nothing I would build myself. Didn't do much more than that as I hate WinISD and it's horrible to use.
Have you actually purchased the 15s yet? If not, what are the size, bandwidth, tuning desired, SPL and budget restraints?
Well sub-150hz would be helped some by the ported cab I was assuming. Their test was done free air in the flare, so it would have some help down low from the tuning frequency, along with a little love from EQ.
No, I have not purchased the 15’s yet. I selected those because the specs seemed pretty nice, they have a demodulation ring, and nice sensitivity to match the other drivers. If there’s better drivers out there that are better for my situation, I’m completely open to suggestions. I don’t have a preference on brands either as long as it’s a transparent company that I can trust. I’d like to keep the budget per 15” below $400. For the right driver I could waver some though.
Not really. Porting is only really effective in a relatively narrow BW around tune.
I still need to know max enclosure size you can deal with, and what tuning do you want to porting?
Also
worth noting, these will be free standing, and since the mid is sealed back, and the CD can have its own chamber or maybe share air space with the mid, i have a lot of room for the air space of the 15. At least 18” wide and 20” deep. I’d like the CD to be around 4 -1/2 feet, with the top of the whole enclosure no more than 5-1/2 feet or so.
The most I could live with is around 8 cubic feet. And I plan to cross to subs around 50-80hz. So anywhere around there is fine for tuning.
where can i get those SEOS horns in US ?
i would like the 30" wide horn with 2" throat ... the one Celestion used to measure the Axiperiodic driver ...
also, is it expensive ?
if i can't get that SEOS horn i may have to build my own horn ...
http://horns-diy.pl/horns/seos/seos-30/
After you've asked, let us know as I'd be interested in a pair too.
so custom ordering from Poland heh ?
yeah at that point i think i may as well just build one myself.
it will look more coherent with the rest of the speaker as well if the entire speaker is built from the same general palette of materials and building methods.
Which will be what exactly? How large are they, where will they be placed relative to the 15" up, what drivers do they use, how low and high do you plan to use them?
I modelled the FP you mentioned in WI, which I hate with a passion, and got 170L net on a 36Hz QB3 tune. Not remotely happy with that as it's too large, but a 36Hz tune with a 2nd order HPF to protect the driver would be more than enough LF extension for anything I ever used my PA for. But my enclosures were 6th order ported tuned at 40Hz and were 70L net for a similar max SPL.
What I'm finding hard is I only have bits and pieces of what you're really trying to put together, not an entire system which is how I would approach it. If your subs will be used up to 100Hz, and will always be used, then I see no point for anything beyond a smallish sealed and EQd enclosure for the 15. But I still have no idea of how low you want the system to go either, or max SPL. What sort of music will you be supporting? If it's most rock, jazz, world, you don't need under 40Hz. If it's EDM, I have no idea as I don't listen to it or consider it music, so I need a set of specs, especially if I need to use WI.
I will have 4 Stereo Integrity SQL 15’s in 4cuft cabs slot tuned to 28 hertz. With 95db sensitivity and each on 1,000 rms at full tilt all 4 should reach around 137db before room gain. Since they’re individual cabs I will place them wherever is best for the room/situation. I plan to use them from around 28-60/80hz.
Nothing necessarily has to be modeled in WI, that’s just all I have downloaded. As long as you modeled in another app and sent me the plot I’m 100% content. They will never ever see anything below 60hz under any circumstances. One, or all subs will be alongside them 100% of the time. For a little more context, this will be used in my 1,000sqft garage for gatherings, and I will be doing sound for a few local bars and weddings on occasions.
To give more clarification on the entire system, my plans are as follows:
Schiit Dac-> MiniDsp 2x4hd-> analog out #1&2 to my Hypex FA503’s for the speakers we’re discussing-> analog out #3 to a behringer NX3000 for 2 of my 15” subs-> analog out #4 to another NX3000 for my other 2 subs.
There will also be a Sound mixer for fading, effects, mics, etc. But incorporating that into the system is for another discussion.
The system will play everything from my personal taste (Johannas Bornlof, Jakob Ahlbom, Hans Zimmer, Alfa Mist, jazz, folk), to fast paced, heavy bass dance music and everything in between. Max SPL for the mid by itself, and tweeter by itself will be around 128db, so I’d need the woofer to be capable of similar output levels within reason (I.E. 125+/-. I’m sure there will be scenarios where I will push them close to this figure, but only when showing off, never for extended periods of time. I figure 120db is a good figure to shoot for obtaining comfortably for sustained periods of time if I had to guess.
The absolute largest gathering I foresee playing for is my local outdoor car show once a year. There’s around 300-400 people spread over 5 or so acres. But I’ll provide nice audible background music during the event, as well as mic’d announcements for raffles and such.
Hardest scenario I’d push them in is for a local 5,000sqft bar/club with very loud dance music for intoxicated individuals on a dance floor.
Thanks, let me know if you require more info! Also again, other driver recommendations are welcome, and will be received with open arms.
As you're running the SIs up until I guess 80Hz or so, then any pro 15 that floats your boat sealed with enough Vd to get the job done in a box small enough that it's useful size to move. Try the Eminence Kappalite 3015LF as a start.
I modeled it in WinIsd, and it looks relatively flat in the SPL plot, but I’m not sure what other parameters I should be looking at.
Also, I’ve had several people on here tell me that they hate WinIsd, so what is another good software that I can model drivers on?
I had someone recommend the Acoustic Elegance TD15 as well. Looks like an incredible driver, but I’m curious if I need to go this “high end” on my mid/bass while using more moderately priced hf and mid. From my understanding, the woofer in a 3 way crossed this low should have the most wiggle room (quality & distortion wise), than any other driver in the speaker, because all it will be playing is the very very lowest parts of voices and kick drums/ toms, no?
I would avoid sealed for PA due to long term heat build up. You can make the ports small diameter and tuned below the pass band of the cab if you want them just for ventilation wherupon acousticly the box will behave much like a sealed box.
Hornresp simulates sealed and vented boxes.
Hornresp simulates sealed and vented boxes.
That definitely makes sense with a cab that’s going to take quite a bit of abuse. Thanks for the tip. And 10-4, I’m going to look into it. Thank you!
I’m actually considering changing the design from a 3 way, to an active 2 way. I figure with my subs running up to 60-80hz, it may be more cost effective and sound nearly just as good to do the following:
-Acoustic Elegance TD15M tuned around 50hz & 4-5cuft (still need to model)
-SEOS 18 1.4” waveguide
-Faital Pro HF 146 1.4” CD
-MiniDsp 2x4 HD
Faital recommends a high pass at 12db/oct from 900hz running 80 watts, and 650hz running 40 watts. The SEOS 18 is good to around 800 or so, so I’d have room to wiggle with my crossover. I’m figuring I need to stay close to 1000hz or under to match directivity well and avoid beaming, someone correct me if I’m wrong.
If I go this route, I’ll get the 16ohm version of the HF146 so a Crown XLS 1002 should drive them nicely.
I’d also run a Crown XLS series on the TD15M as well. They offer a 4 ohm version so I could get away with all the amplification for around $900 rather than $1,600 for Hypex. I’ll also save around $500 from the mids so I can do more bass modules. My crossovers will also be much more simple, because both drivers are very very flat within their frequency range, IMO.
I’ll attach the SPL/impedence curve of the HF146 below.
-Acoustic Elegance TD15M tuned around 50hz & 4-5cuft (still need to model)
-SEOS 18 1.4” waveguide
-Faital Pro HF 146 1.4” CD
-MiniDsp 2x4 HD
Faital recommends a high pass at 12db/oct from 900hz running 80 watts, and 650hz running 40 watts. The SEOS 18 is good to around 800 or so, so I’d have room to wiggle with my crossover. I’m figuring I need to stay close to 1000hz or under to match directivity well and avoid beaming, someone correct me if I’m wrong.
If I go this route, I’ll get the 16ohm version of the HF146 so a Crown XLS 1002 should drive them nicely.
I’d also run a Crown XLS series on the TD15M as well. They offer a 4 ohm version so I could get away with all the amplification for around $900 rather than $1,600 for Hypex. I’ll also save around $500 from the mids so I can do more bass modules. My crossovers will also be much more simple, because both drivers are very very flat within their frequency range, IMO.
I’ll attach the SPL/impedence curve of the HF146 below.
I’m actually considering changing the design from a 3 way, to an active 2 way. I figure with my subs running up to 60-80hz, it may be more cost effective and sound nearly just as good to do the following:
-Acoustic Elegance TD15M tuned around 50hz & 4-5cuft (still need to model)
-SEOS 18 1.4” waveguide
-Faital Pro HF 146 1.4” CD
-MiniDsp 2x4 HD
Faital recommends a high pass at 12db/oct from 900hz running 80 watts, and 650hz running 40 watts. The SEOS 18 is good to around 800 or so, so I’d have room to wiggle with my crossover. I’m figuring I need to stay close to 1000hz or under to match directivity well and avoid beaming, someone correct me if I’m wrong.
If I go this route, I’ll get the 16ohm version of the HF146 so a Crown XLS 1002 should drive them nicely.
I’d also run a Crown XLS series on the TD15M as well. They offer a 4 ohm version so I could get away with all the amplification for around $900 rather than $1,600 for Hypex. I’ll also save around $500 from the mids so I can do more bass modules. My crossovers will also be much more simple, because both drivers are very very flat within their frequency range, IMO.
I’ll attach the SPL/impedence curve of the HF146 below.
-Acoustic Elegance TD15M tuned around 50hz & 4-5cuft (still need to model)
-SEOS 18 1.4” waveguide
-Faital Pro HF 146 1.4” CD
-MiniDsp 2x4 HD
Faital recommends a high pass at 12db/oct from 900hz running 80 watts, and 650hz running 40 watts. The SEOS 18 is good to around 800 or so, so I’d have room to wiggle with my crossover. I’m figuring I need to stay close to 1000hz or under to match directivity well and avoid beaming, someone correct me if I’m wrong.
If I go this route, I’ll get the 16ohm version of the HF146 so a Crown XLS 1002 should drive them nicely.
I’d also run a Crown XLS series on the TD15M as well. They offer a 4 ohm version so I could get away with all the amplification for around $900 rather than $1,600 for Hypex. I’ll also save around $500 from the mids so I can do more bass modules. My crossovers will also be much more simple, because both drivers are very very flat within their frequency range, IMO.
I’ll attach the SPL/impedence curve of the HF146 below.
I modeled the kappalite, and I’m not very fond of it. I’m thinking of changing out to a 2 way as I stated above. Check that out and give me a little feedback if you would.
Bump.
P.S. Just got an email from Nick at Stereo Integrity saying that my SQL-15 will be here on Thursday. Would you all like a separate build thread on the performance and process of building it? I could take some sweep measurements out in the yard if anyone is curious.
In the mean time, here’s some photos of the HT-12’s I built. 🤗
P.S. Just got an email from Nick at Stereo Integrity saying that my SQL-15 will be here on Thursday. Would you all like a separate build thread on the performance and process of building it? I could take some sweep measurements out in the yard if anyone is curious.
In the mean time, here’s some photos of the HT-12’s I built. 🤗
