Horn Decision

[Phergus_25]

Well I started cutting my wood today. I cut my peice of ply in half so I had two 4' squares so I could have the grain run up and down the speaker as opposed to across, but its going good.
I am just making two packets, one for each speaker and hope to have them assembled within a few days. Some pics to come tommorow.
I am going with the provided CC size, i assume that it will be ok. And if not then I can always change something, or just live with it. I think that I might put alittle poly fill in there to up it.
I assume that poly fill works with full range projects...
thanks
-greg

 

[Phergus_25]

one speaker pack, minus sides

Layed out

CC

 

[Phergus_25]

Since Im going to veneere *sp the face and the top, basicaly like a strip on the front and around, with rose wood I used a finish nailer alittle... but its all togeather, that one is

 

[Phergus_25]

Is there any chance that a Bottle head sex amp will be able to feed these beasts. Its only 2 watts, but would serve me well as a speaker and am HP amp.

-greg

 

[kazoo]

Looking good. I don't see whay you can't use a SEX amp. I am running a SEX amp on my 166esr BLHs and it sounds great. But mine are in a smaller room.

John

 

[planet10]

I use mine with 4-5 W. My room is big (~7mx16.5mx4m average height. I can't really push them but i don't listen really loud.

dave

 

[Phergus_25]

This will be in a small room, verging on extremely small. I have a 10 watt vintage Pioneer reciever I plan to use for now. I plan to make the other one today hope to have them going good the middle of next week.
-greg

 

[planet10]

Greg,

I've been gathering all your pictures... Is it OK to use them to illustrate an A126 build sequence on the FH site?

dave

 

[chrisb]

Is there any chance that a Bottle head sex amp will be able to feed these beasts. Its only 2 watts, but would serve me well as a speaker and am HP amp.

-greg

I've heard that amp with a pair of BuschornMKI /FE108s, in a smallish basement listening room ( well under 200sqft), my own system is Paramours with FE126 Frugelhorns, in a similar sized space, and finally I've also heard Dave's A126's in several familiar spaces.

Unless you're planning on blowing the glass out of the window frames, the SPLs and dynamics with 2 watts and the FE126 should be quite satisfying.

One of the great things about Ron's design is how much bigger they sound than the driver size and x-max would imply. My only recommendations are that you build the rear deflectors as well, and experiment with supra-baffles. The latter may mitigate the need for BSC.

 

[Phergus_25]

Thanks for all the help. And your welcome ot use the pics. I am going to get some pics up tonight of the two speakers side by side.

I am deff going to build the rear deflectors. Im going to look at them tonight and put them togeather tommorow. As for supra baffles im going to at some point turn some on the lathe, but im going to run them for a while.

With this being my first horn build I want to thank the community here for all the help. I am very happy with how they are coming.

-greg

 

[ronc]

Looking good!

Someday i may even hear a pair.

ron

 

[Phergus_25]

Well Im almost there. Drivers and terminals will be here on monday. So onec I get those Im going to clamp a peice of ply on the side and see how they sound.
I am looking into what i can do to make the sound better, tweeking wise. Any suggestions are welcome.

The twins..

A side shot of grain..

 

[ronc]

I hope you used the 2.2 liter CC?
After extensive reprogramming and simulations i found that was the minimum volume for a roll in of unrestricted(un loaded) cone movement at around 230 hz. This was established for un loaded frequencies in the bottom of the vocal range.

ron

 

[Phergus_25]

I used the chamber that was listed in the PDF above.
I would hope that is the right size since the speakers are now done.
Let me know
-greg

 

[Phergus_25]

I took and using a bag of water I measured the CC and its deff the 2.2 one. It filled a liter bottle over twice once pored out of the bag.
-greg

 

[ronc]

Very good!

You will have a response from the A126 that sounds like a much larger speaker and have excellent cone control.
I would suggest a supra baffle and one of Daves modded Fe126 drivers.

ron

 

[Phergus_25]

Ron its great to be able to get feed back from the person that designed what your building. I just bought some stock drivers for now, I didnt want to sink ALOT of money into this right now, but I'm hopefully going to send them off at some point for the treatments.

For the rear deflector what is the angle? and is it just the hight of the rear horn part.

-greg

 

[ronc]

Ron its great to be able to get feed back from the person that designed what your building

Never built them, in fact i have never heard them. They are all designed around physics and math with no application of "voodoo". (save your river rocks for the slingshot)

Slightly greater (4") than the height of the mouth and for full wave development a 45 degree slope up. The incident angle to the reflector ,when wall loaded, will be 45 degree.

ron

 

[Phergus_25]

Slightly greater (4") than the height of the mouth and for full wave development a 45 degree slope up. The incident angle to the reflector ,when wall loaded, will be 45 degree.

ron

Ok Im having a hard time if you mean it is going to just be a 45 degree wedge that is 4" taller than the mouth, or if it is going to have another angle once it gets twords the top.


For everyones ideas:
Are there places where cork or anyother dampening materials need to be placed? any little tweeks that would really help?

thanks
-greg

 

[Phergus_25]

I'm also wondering what kind of wire people are using with these guys?
And certin kind that works best?
-greg