Hey guys,
I've been following DIYAudio for several years, always in awe at the level of knowledge and advice readily available on here. I'm about to start building my first ever speaker and given I have zero experience with loudspeaker design (only with interior + furniture design) , I'm trying to start off slow. I also accept that if it goes wrong, hey.. I tried 🙂
I have what I think is a basic two way design, not completely sure what I want to use as the woofer just yet, but almost definitely a 10 inch high efficiency. The unusual approach is I am very tempted by the new Celestion Axi2050 to cover mid + upper frequencies.
I am buying all parts from Parts Express to experiment.. and I'm actually going to use a subwoofer enclosure (sealed) with the compression driver mounted on top - still gotta figure out how to mount it.
This is where I get in a little over my head.. as for the waveguide, given that the Celestion has a 2in diameter, I was thinking I could try out a pair of these PRV Audio WGP22-50PR 2" White 60 x 60 Waveguide 4-Bolt - but given the size of my listening room (14x14) - I am not sure if these make sense.
Anyway, sorry for the n00b-ness - I am really just trying to experiment and learn something along the way.
Attached a rough design of what I'm hoping to build
Any help / advice is greatly appreciated!
I've been following DIYAudio for several years, always in awe at the level of knowledge and advice readily available on here. I'm about to start building my first ever speaker and given I have zero experience with loudspeaker design (only with interior + furniture design) , I'm trying to start off slow. I also accept that if it goes wrong, hey.. I tried 🙂
I have what I think is a basic two way design, not completely sure what I want to use as the woofer just yet, but almost definitely a 10 inch high efficiency. The unusual approach is I am very tempted by the new Celestion Axi2050 to cover mid + upper frequencies.
I am buying all parts from Parts Express to experiment.. and I'm actually going to use a subwoofer enclosure (sealed) with the compression driver mounted on top - still gotta figure out how to mount it.
This is where I get in a little over my head.. as for the waveguide, given that the Celestion has a 2in diameter, I was thinking I could try out a pair of these PRV Audio WGP22-50PR 2" White 60 x 60 Waveguide 4-Bolt - but given the size of my listening room (14x14) - I am not sure if these make sense.
Anyway, sorry for the n00b-ness - I am really just trying to experiment and learn something along the way.
Attached a rough design of what I'm hoping to build
Any help / advice is greatly appreciated!
Attachments
I'm using 2" compression tweeters in my 14'x14'x11' music room. No problem, although I do turn the right one to point at my seat on the couch. Peavey SP2-XT, with 22XT compression drivers on a 14"x7" horn. The horns fire down at my head so I had the speakers up on pole.
Peavey crossed @ 800 hz for a 125 w SP2,1200 hz for the 300 w SP2-XT, and 2000 hZ for a 600 W SP2 (2004). Same drivers each case. 22XT limited to 70 W so the pink noise test and crossover point determines how much power the overall speaker can handle.
SP2-XT were stolen & I am attempting duplication with ebay survivors tweeters & eminence woofers. I'm mounting the tweeter naked on top as you are. I'm making a horn support out of NEMA CE laminate, which probably won't rattle. It will mount on a pole extended from a car wheel & axle shaft (surplus Ford truck) about 9' in the air. One major goal is building a speaker that is so ugly it can't be sold to a fence.
10" woofer can go low in frequency, but not at 300 w levels. I'm using David B. Weems Designing Buiding & Testing Your Own Speaker Systems book since sims don't run on Linux op system.
Peavey crossed @ 800 hz for a 125 w SP2,1200 hz for the 300 w SP2-XT, and 2000 hZ for a 600 W SP2 (2004). Same drivers each case. 22XT limited to 70 W so the pink noise test and crossover point determines how much power the overall speaker can handle.
SP2-XT were stolen & I am attempting duplication with ebay survivors tweeters & eminence woofers. I'm mounting the tweeter naked on top as you are. I'm making a horn support out of NEMA CE laminate, which probably won't rattle. It will mount on a pole extended from a car wheel & axle shaft (surplus Ford truck) about 9' in the air. One major goal is building a speaker that is so ugly it can't be sold to a fence.
10" woofer can go low in frequency, but not at 300 w levels. I'm using David B. Weems Designing Buiding & Testing Your Own Speaker Systems book since sims don't run on Linux op system.
Have you looked at a few 2-way EconoWave designs? 10" and 12" midbass speakers are popular with a waveguide which is designed to control the directivity to 90H and 40V to help manage room effects.
The $65 Peerless compression driver DFM-2544R00-08 measures well, and the titanium diaphragm is coated with a light, thin layer of damping material. designs on diyaudio
diysoundgroup.com has modest cost complete kits.. low stock..
The $65 Peerless compression driver DFM-2544R00-08 measures well, and the titanium diaphragm is coated with a light, thin layer of damping material. designs on diyaudio
diysoundgroup.com has modest cost complete kits.. low stock..
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why not consider coaxial two way with a horn cab...
are you planning to use the Axi with that tiny white waveguide? if so just what are you planning for a x-over frequency?
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I guess because i want to try something different otherwise i’d just buy a pair of tannoys
Thinking of making azura horns on top. Struggling to find manufacturers of acoustic horns - any recommendations?
Thinking of making azura horns on top. Struggling to find manufacturers of acoustic horns - any recommendations?
The Celestion Axi2050 is a 7” 1000USD super special CD operating from 300Hz and extreme levels. It seems very overkill to a 10” and at home. Are you sure you want to invest this much in your first project? Not even sure what kind of horn is rugged enough to hold it.
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No I'm not married to it - I just thought it was an interesting design. I am looking at the Azura 550 pair.. anything that will pair with this well, I'm all ears!
I got my Peavey 7"x14"x1 3/8" horns used off ebay : twice. $150 for 2 with freight. Search term is 22xt horn. I don't see new horns like eminence selling that big. The woofers blow in SP2 & stage monitors 3 times as often as the tweeters. Both sets came in with good drivers. The first set were stolen. SP2-XT & SP2 (2004) were the ones with low distortion. They don't go above 17 khz but I don't hear above 14 khz. The drivers were used down to 800 hz in a 125 W Sp2.
Here is a thread that did the research. best compression driver/horn combo for 700Hz-20kHz - diyAudio
and some results from that thread: RCF HF64
eminence H14EA
SB Audience H280
P-Audio PH-305
Here is a thread that did the research. best compression driver/horn combo for 700Hz-20kHz - diyAudio
and some results from that thread: RCF HF64
eminence H14EA
SB Audience H280
P-Audio PH-305
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I see nothing wrong with the Celestion driver or the concept of yours I’m just trying to point out its very expensive nature may not be of any use in domestic use and you would need a 1000 watt for the low frequency to keep up with its sensitivity (assuming active crossover). If you have the money then why not but just be aware of what your doing. A 1000 USD HF suggest a more expensive LF ad well but a 10” I don’t know. A 21” would be more in the same league. Perhaps it would work in open baffle at home but with amps and the whole your approaching 7k for the setup are you ready for that. Celestion NTR21 5010JD - 21 inch Neodymium Subwoofer
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For sure.. that's a good point!
I was going to use a passive crossover, and L pad attenuator for the horn. I am open to any other suggestions for drivers. I think 21" is just too big. I want to try and keep this as a relatively small(ish) design.
I was going to use a passive crossover, and L pad attenuator for the horn. I am open to any other suggestions for drivers. I think 21" is just too big. I want to try and keep this as a relatively small(ish) design.
With an lpad of this size (-30dB) who knows how much of the performance is lost in the resistors. I’d go active with that driver in any case.
Oh interesting.
I don't think it's -30db though.. sensitivity 97db on the LF (Faitalpro 10") and the celestion is 108db
Open to other driver choices.. 2" throat as I already ordered the horns
I don't think it's -30db though.. sensitivity 97db on the LF (Faitalpro 10") and the celestion is 108db
Open to other driver choices.. 2" throat as I already ordered the horns
You have a 1.5 cubic ft enclosure, with a 10" pro driver, and you're wanting 32hz out of it? Not only is that not going to happen, but you aren't factoring in baffle step loss in regards to the Faital woofers 97 db sensitivity. That axi driver would run with dual 15 or 18 inch pro woofers.
RE: 32Hz - I don't think I said that? Sorry I'm still learning, but I have 2 subs to handle all low frequencies - not part of this speaker design but I intend to use them in the same way I do today (currently paired with Harbeths)
So can someone recommend something a bit more.. reasonable? a coaxial MF/HF compression driver that would pair with a 10" driver in 1.5 cubic ft enclosure
Thank you to everyone for your help (and patience)
So can someone recommend something a bit more.. reasonable? a coaxial MF/HF compression driver that would pair with a 10" driver in 1.5 cubic ft enclosure
Thank you to everyone for your help (and patience)
All the 2" compression drivers are way more sensitive than the woofers. You pad them down with a series resistor. In most cases, also a light bulb to prevent HF peaks from blowing the tweeter, like a big pop from a cable coming loose. Also a voltage clamp across the tweeter like back to back zeners or the diac equivalent.
I'm building with a 101.6 db @ 1w1m eminence deltapro-15A and I'm still series limiting the tweeter. The RX22 tweeter is 111 db 1w1m, also 8 ohms nominal. P-E says the b&C DE1095yn-8 is 108 db 1w1m. Peavey's SP2 match woofer to the RX22 the 1508-KADT is 99 db 1w1m. I'm tuning my box for 54 hz as Peavey did.
I'm building with a 101.6 db @ 1w1m eminence deltapro-15A and I'm still series limiting the tweeter. The RX22 tweeter is 111 db 1w1m, also 8 ohms nominal. P-E says the b&C DE1095yn-8 is 108 db 1w1m. Peavey's SP2 match woofer to the RX22 the 1508-KADT is 99 db 1w1m. I'm tuning my box for 54 hz as Peavey did.
I was going off of the diagram that listed 32-600hz that was in your first post. If you really love the Azura horn, I think that you should do some searching for designs using it. If you don't have the knowledge and ability to design it properly. I'm afraid that you would throw a lot of money at top shelf parts, and end up frustrated. For what you are able to spend, you should be able to find an existing design that would be capable of great performance. Is this more about the aesthetic of a top mount round horn? Are you wanting high sensitivity for low wattage amp use, or is it for higher output reasons? Decent quality drivers, an appropriate horn/ waveguide, and a great design would be my choice over the most high end cost drivers without a great crossover design, box design, and good synergy.