Synergy Horns-Dayton and PRV..... - Page 3 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #21 of 30 Old 12-01-13, 09:46 PM Thread Starter
Shackster
 
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Re: Synergy Horns-Dayton and PRV.....

Next up is the midrange cup. I had to dremel out the inside lip of a 3" PVC endcap...but otherwise they work very well. They are hot glued to the horn. Be patient...it takes a while for the glue to cool enough to hold them on. Once completely cool...it's actually hard to get them off. They can be removed by slow careful cutting with a utility knife...for driver replacement.

Note that the wires come through the end of the end cap and all surfaces are sealed.

Also note that the compression driver is held in place by the compression action of a board with two strips of foam. Holds in in place easily...and well. Probably not suitable for something that's needed for touring...but for carrying up my stairs...just fine.

The outside finish is Duratex....love it.
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post #22 of 30 Old 12-01-13, 09:58 PM Thread Starter
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Re: Synergy Horns-Dayton and PRV.....

Last...for now is the crossover.

I have two version...A and B....A uses 9mH in series with the woofer and 40 Ohms in parallel with the mid. B uses 8 mH in series with the woofer and 13 Ohms in parallel with the mid. The difference is a bit more midbass and less midrange. I found the A version a bit too analytic ...but I left it as the center channel for the home theater. Made voices absolutely intelligible in HT usage...even if the rest of the track is busy and rubbish.

The comparison plot shows A vs. B....A has a bit more output in the midrange and less in the bass.

I think I've explained before that SoundEasy should be called Sound "Really kind of difficult, but with a enough work will get the job done, though you'll practice cursing a lot" I don't buy the measurements below about 200 Hz for the woofer...so I'm running a bit blind. I'll re-take and see what's actually happening and refine the crossovers as needed. These aren't the last crossovers....for sure. Plenty of optimization for measured time domain and frequency domain performance
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post #23 of 30 Old 11-03-15, 04:02 PM
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Colin
 
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Re: Synergy Horns-Dayton and PRV.....

Just read through this thread, absolutely stunning build, very nice, I built some point source horns a few years ago for a friend, these were only two driver versions not three like these but the clarity is amazing, I bet they sound beautiful in you're home, I am looking for inspiration for some new tops for my pa system, I might have to dig out my plans.
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post #24 of 30 Old 11-03-15, 05:42 PM Thread Starter
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Re: Synergy Horns-Dayton and PRV.....

Quote:
concept 10 wrote: View Post
Just read through this thread, absolutely stunning build, very nice, I built some point source horns a few years ago for a friend, these were only two driver versions not three like these but the clarity is amazing, I bet they sound beautiful in you're home, I am looking for inspiration for some new tops for my pa system, I might have to dig out my plans.
Thank you! I'm a few years into owning them now...and to this day they make me a bit giddy with anticipation.

-Scott
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post #25 of 30 Old 11-03-15, 06:14 PM
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Colin
 
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Re: Synergy Horns-Dayton and PRV.....

I've just spent the best part of this year devoping and building my new bass bins and want something different for the top end of the pa, I did think about synergy/unity horns, after looking at your three way cabs I am going to build one and see how it intergrates, Im going to enjoy this

kind regards
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post #26 of 30 Old 11-03-15, 06:31 PM Thread Starter
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Re: Synergy Horns-Dayton and PRV.....

Quote:
concept 10 wrote: View Post
I've just spent the best part of this year devoping and building my new bass bins and want something different for the top end of the pa, I did think about synergy/unity horns, after looking at your three way cabs I am going to build one and see how it intergrates, Im going to enjoy this

kind regards

Do it.

Seriously...if you get it right...and be prepared for multiple prototypes... the sound is a mix of the best parts of headphones, horns, electrostatics, near-field mini-monitors and behemoth audiophile monsters.

-Scott
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post #27 of 30 Old 11-04-15, 12:14 PM
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Colin
 
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Re: Synergy Horns-Dayton and PRV.....

Agreed, the small two way horns I built some years ago sounded truly amazing, they only had to go down to 300hz, even though my bass bins easily go up to 250/300 I would still want to get much lower for reinforcement purposes so a three way would be a must, Scott, have you any objections to me using your knowledge from this thread as a kick start? Haven't worked out how to post photos on here yet, when I do I'm happy to show where I am on the bass side of life.

kind regatds
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post #28 of 30 Old 09-05-16, 06:35 PM
 
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Re: Synergy Horns-Dayton and PRV.....

Glad I found this thread as I am getting ready to make one, and see if it is better than I currently have (I have heard a lot about the Synergy Horns, and fully expect it to be better)... I know it will def be easier to manage than what I currently have, as my bass bins cannot be moved, and if I move the horns I have to change the delays. I like 2 ways...so mine will use (2)15" woofers, and (1)EV DH1A driver per box. Hopefully i can get down to 40Hz or so to mate with the DTS-10 subs.

Any more tips on these bad boys?

Ron

My Home Theater
BenQ MH741 Projector, Yamaha CX-A5100, (2 pr) JBL 8340As, (2 pr) JBL 8320s, PS3, XBox One, (1) Asus Mini, Redmere HDMI cables, Monster Signature HTPS7000, (2) Furman Power Conditioners, (2) DTS-10 subs, SeymourAV 180 (195" diag) scope screen, Darbee Darcet,Yamaha P7000s, Oppo UDP-203

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post #29 of 30 Old 09-07-16, 01:32 PM Thread Starter
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Re: Synergy Horns-Dayton and PRV.....

Quote:
ellisr63 wrote: View Post
Glad I found this thread as I am getting ready to make one, and see if it is better than I currently have (I have heard a lot about the Synergy Horns, and fully expect it to be better)... I know it will def be easier to manage than what I currently have, as my bass bins cannot be moved, and if I move the horns I have to change the delays. I like 2 ways...so mine will use (2)15" woofers, and (1)EV DH1A driver per box. Hopefully i can get down to 40Hz or so to mate with the DTS-10 subs.

Any more tips on these bad boys?
I don't have a lot of time for a lengthy reply on the workings of a Synergy Horn, but a two way "Synergy" design is not possible given the driver sizes you've listed. You would not be able to optimally tap into the flare rate at the correct points in a conical or quadratic horn expansion. If you did make a two way, there would be no way to get down to 40Hz for similar reasons. In addition the driver entrances (if optimally tapped into the horn) would not meet the 1/4 wavelength requirement between entrances at the crossover point for a time domain accurate speaker.

I suspect you could make an offset driver co-entrant horn with 2 15's and 1 compression driver, but it would not be a Synergy design, not even close...the physics prevent it.

I strongly suggest that you re-read the synergy patents and Tom's many posts on how the designs work, the high level information is out there, and available.

Sincerely,

Scott
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post #30 of 30 Old 09-07-16, 01:46 PM Thread Starter
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Re: Synergy Horns-Dayton and PRV.....

P.S. 8"-1" two way is about as good as it's going to get...and you'll still have a lot of work ahead of you. Look into the Sound Physics Labs Runt speaker.
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