Compact 3-Way Horn Speaker
- Thread starter Gigantic
- Start date
Gigantic
A big, big love
Parts are starting to trickle in… got some neoprene weather stripping to seal everything up
And for testing purposes, I’ve got a Forte III passive, breaking my vow to never use Klipsch parts, since the Dayton Audio RSS-390 is on back order until May. I may swap the Dayton out of my full-size horns, since they’re tunable with weights, although it’s my preference to not use weight, since it can increase low frequency reverberations and make the bass seem boomy and slow.
And for testing purposes, I’ve got a Forte III passive, breaking my vow to never use Klipsch parts, since the Dayton Audio RSS-390 is on back order until May. I may swap the Dayton out of my full-size horns, since they’re tunable with weights, although it’s my preference to not use weight, since it can increase low frequency reverberations and make the bass seem boomy and slow.
When seeing the title of this thread, this company and speaker came to mind.
Shinjitsu Audio
Home page of Shinjitsu Audio Products where technology meets sound.
shinjitsuaudio.shop
Invidiosulus
Well-Known Member
JBL sold those drivers in a 1.2 cubic foot ported cab with a recommended high pass of 60Hz.
Gigantic
A big, big love
After some time off working on other projects, I’ve revisited this one. The woofer I’d ordered used from a prominent retailer on Reverb in California arrived:
It had been listed as in “Very Good” condition. Obviously, that’s not the case. I ordered my 2nd choice, a Dayton Odeon 12” woofer, instead and dry fit it today, along with the mid horn and the passive radiator.
Next step will be to fit the tweeter, then build the crossover network and test.
It had been listed as in “Very Good” condition. Obviously, that’s not the case. I ordered my 2nd choice, a Dayton Odeon 12” woofer, instead and dry fit it today, along with the mid horn and the passive radiator.
Next step will be to fit the tweeter, then build the crossover network and test.
Gigantic
A big, big love
I brought the horn home this morning for measuring:
After wiring up the innards, I very hastily threw an improvised network together:
and ran a sweep:
It rolled off at the bottom in the mid 30's, without the benefit of corner loading! I put on Bela Fleck and Flecktones and every bit of Victor Wooten's baseline were there. While the bass wasn't as authoritative as my big horns, which extend to 20Hz, it had considerable presence.
I'll put together a proper network, clear out a corner and get more measurements, soon.
After wiring up the innards, I very hastily threw an improvised network together:
and ran a sweep:
It rolled off at the bottom in the mid 30's, without the benefit of corner loading! I put on Bela Fleck and Flecktones and every bit of Victor Wooten's baseline were there. While the bass wasn't as authoritative as my big horns, which extend to 20Hz, it had considerable presence.
I'll put together a proper network, clear out a corner and get more measurements, soon.
Gigantic
A big, big love
Here's my improvised network and drivers:
I'm using the PRV D4500ND-PH, only because my D2200PH are in the big horns with @mboxler's EBX400 elliptical horns, while my Mumped PRV WG-4550 are out getting refinished later this coming week.
I literally threw that network together without planning; it was a complete shot in the dark and has no business working as well as it did with just one sweep.
I'm using the PRV D4500ND-PH, only because my D2200PH are in the big horns with @mboxler's EBX400 elliptical horns, while my Mumped PRV WG-4550 are out getting refinished later this coming week.
I literally threw that network together without planning; it was a complete shot in the dark and has no business working as well as it did with just one sweep.
TheAbide
Active Member
these are turning out SO sweet! I think your bass response that's "missing" it's authoritativeness looks just about right on your sweep. that dayton is a few db less sensitive than than our average 15" in addition to the smaller cone. I think it would probably come right in line if you pulled the rest down a few more db, but I'd bet a good corner or a tiny turn of the bass knob on your playback device would have nearly the same effect. I think it looks great in cabinet and sweeps so far! Any thoughts on finish yet?
Gigantic
A big, big love
I can't take credit for finding the 18Sound DKN-25, it was @mboxler's recommendation. Its looks definitely give chuchero vibes, but the performance is remarkable- the driver is tiny!!!
I literally threw it together from the remnants of a Universal crossover I had laying around, although it barely has but a passing resemblance to @THD+N's schematic. There will be more tweaking to follow, along with a properly rendered network. The goal being to get the FR at least as smooth as Mobetta...
Gigantic
A big, big love
I'll likely finish them in piano black, like the other horns, except I'll trim them out in walnut, since I have some left over from making this table for my former employer back in January:
I'd love to finish them in walnut veneer, but that may be a bit costly compared to paint. We'll see how things shake out with my being able to get back to work- between my back pain and cognitive difficulties stemming from concussions, I'm not confident that will happen soon. Building that table took a lot out of me physically and my memory presently tests below average. The next few months will be telling; with the weather starting to break next week, I'm hoping to start cycling again, which will hopefully pay dividends in reducing chronic pain and improving my sleep and brain function, both of which are somewhat poor, presently. I do have a line on a deal on 1" plywood- I'll probably pick that up next week, in which case I'll make two and probably discard this one.
Gigantic
A big, big love
Got a proper network put together, an amalgam of @THD+N's take on the Universal, with @mboxler's 4500X tweeter circuit:
I pulled a quick sweep:
followed by pulls on the squawker and tweeter, individually:
along with a comparison of with and without the passive radiator, showing how it would perform if it was merely a "mini LaScala:"
As you can see, the Mini LS mode is less than impressive, rolling off at 60 Hz, although it's less steep and an arguably smoother curve than the LS-1. Without the passive, it I suspect it would make a great center channel horn speaker.
Still, the sweeps highlighted some minor flaws: the mids are a little hot & the speaker is a bit forward sounding as a result. It's not awful, but I'll be dropping them to tap #2 to see if we can get an improvement. There's also a hump at 4500Hz that I'd like to tame, as well as a falling response from the DS18 DKN-25, but Mike has suggested some adjustments. Lastly, I have a sneaking suspicion that the capacitor on the woofer may be a bit heavy handed. Nick's schematic called for an 84µF cap on the 4Ω K-33, I used a 64µF cap on an 8Ω Dayton Audio Odeum Pro 12; I'll play around with values after I sort out the mid and squawker.
I pulled a quick sweep:
followed by pulls on the squawker and tweeter, individually:
along with a comparison of with and without the passive radiator, showing how it would perform if it was merely a "mini LaScala:"
As you can see, the Mini LS mode is less than impressive, rolling off at 60 Hz, although it's less steep and an arguably smoother curve than the LS-1. Without the passive, it I suspect it would make a great center channel horn speaker.
Still, the sweeps highlighted some minor flaws: the mids are a little hot & the speaker is a bit forward sounding as a result. It's not awful, but I'll be dropping them to tap #2 to see if we can get an improvement. There's also a hump at 4500Hz that I'd like to tame, as well as a falling response from the DS18 DKN-25, but Mike has suggested some adjustments. Lastly, I have a sneaking suspicion that the capacitor on the woofer may be a bit heavy handed. Nick's schematic called for an 84µF cap on the 4Ω K-33, I used a 64µF cap on an 8Ω Dayton Audio Odeum Pro 12; I'll play around with values after I sort out the mid and squawker.
Attachments
Gigantic
A big, big love
see above. No eq, just the 4500X filter.
mboxler
Well-Known Member
The raw response of the DS18 is awful (purple) but it's a downward slope which I find easier to cross. Lance, I did end up with a fairly good 6khz cross. 2uf/160uh/3uf third order high pass (green). The values I gave you yesterday should be close enough??? I can't hear beyond the new drop off anyway.
Mike
Gigantic
A big, big love
I have a PRV electrolytic that measures 32.5 that I’ll throw on there in a few minutes.
The 4 ohm and 8 ohm woofer crossover values are quite different. For the 8 ohm (3070e) woofer, I am using a 4.5mH choke & 36uF cap for a 12dB slope at around 400~425Hz.