Reed Exodus Anarchy 25hz Tapped Horn - Page 11

6 inches or 152 millimeters.

Mark

Thank You.......................

Be sure to post up pics and impressions when you're done. We all are picture whores and it's nice to let the designers know that you appreciate them .

Will do......................

Thanks. Good luck with your build.

2 cabinet cutlist with 4X8 material (lots of leftovers....)

Sheet one:



Sheet two:

I was just wondering. Is there anyplace to find these drivers aside from DIYcable? It seems like the price from that vendor has gone up significantly since the start of the thread.

As far as I know, DIYCable is the only game in town (at least in the states...).

If the Anarchy is a bit much for the budget, the Tang Band W6-1139SI is the closest thing I know of to a drop-in replacement. Way back when over at AudioKarma, this design was actually started with the Tang Band W6-1139 SI in mind, but the design was ultimately finished/folded/optimized for the Anarchy.

I have both drivers, as well as all sorts of intentions to swap things around and measure the results, but I've been a bit busy with the rest of life....

Awwwww......gee shucks.....

Thanks for the reply. I'm looking forward to those measurements when you get the chance. In the mean time I'll probably just keep an eye on the Anarchy prices. Maybe they'll have a sale or something.

The Tang Band W6-1139 is a good alternate driver. At the time I did this design, the Anarchy was available at an introductory price of $49, so it was actually less expensive than the Tang Band. If it were me, I'd watch for sales on either driver, the Tang Bands have sold for as little as $29 each. The comparison I modeled a while back looks like this (tang band is in black):



Plenty good for an alternate driver.

Just found this thread after looking for a sub design for my 2 way home rig. Looks like these are just the ticket for filling in and smoothing out the low end.

Out of curiousity, what would you all recommend for an amp in a setup like mine? I'm not running a HT or multichannel amp of any kind, just integrated tube amps (1626 Darling and ST35 clone) on the mains. I'd like to stay away from plate amps, FWIW.

As far as amps go - anything that will get you the power you need into the load you have to get you the SPLs you want. The drivers I recommend will take at least 75 watts without bad noises happening or smoke coming out. This is good for 105 dB groundplane, a bit more in a typical room.

A 25 Hz highpass is a good thing to have as well.

Too many amp choices out there for me to really nail it down further than that. Gainclones, chipamps, plate amps, rack mount amps, tube amps...and so on....

I appreciate your reply. I'm looking to upgrade all my old junk gear for better over the next year or two. The wattage requirements will be a big help in deciding. As these will mainly be used to supplement the bottom end, I'm thinking maybe a 50W would be plenty for these. After a couple of more posts I can link the pics to the room.

Right now I'm looking to try my hand at some OB speakers this spring utilizing a Behringer DCX2496, which should let me have some control with everything on the bottom end. Maybe one of the lower powered fanless SS proamps that's out there. Although I've got a lead on some EL34 PP monoblocks

Would this be a good addition to a HT setup to compliment a 12" velodyne sub. Maybe to smooth out bass response in my room. Was looking to build a new sub but come across this and this seems intriguing.

Wow!

So would Two of these replace my 12" sub for HT duty and handle the low frequencies and spl in movie content? I was planing on two ported 10" in the back but this would be alot cheaper. Seems like a no brainer

Remember, It does not go below 25Hz so if you like low frequency content then its not really that great of an HT choice.

The Anarchy is a Tapped horn, and conventional wisdom tells us not to mix different subwoofer alignments. So in order to use these, it would most likely be best to replace the 12" sub.

Also, the Anarchy is a 25-30Hz horn that requires highpassing below it's "tuning" point to avoid excursion problems, so you'd be band limited to a certain extent. However, if you're ok with 25-30Hz extention, using 2 or more of these spread around your room to reach desired output as well as smooth in room frequency response would most likely yield better results than using a single 12" sub.

How large is your room?

Can you measure what you have?

That will help determine whether or not these are worth the effort. Build more than one, I suggest a minimum of 4 for home theater.

According to the simulations and my measurements, this sub is -3 dB at 23 Hz. The Velodyne I measured was not. Neither was the Definitive Tech Supercube.

Sure, it takes more than one to knock stuff off the walls like the Velo and Supercube can, but they're not expensive drivers, they're not large boxes, and they're not hard builds.

Any chance this design could work with the "Apex Jr Super 8"?

FS=47.75Hz
Qms=7.334
Qes=.552
Qts=0.514
Vas=0.376 cu. ft.
Re=2.653 ohms
Le=0.157mH
Spl=85.22 @ 1w/1m

http://www.apexjr.com/speakerstuff.html

Won't fit inside, the frame is too wide. If you expand the baffle to make it fit, the "tuning" blows up.

That driver is not a bad one for a tapped horn, this is just not the right tapped horn for it.

These drivers like to be used in pairs, and it seems that they like to be tuned around 25 Hz.

I have two pairs of these drivers, I have several simulations I like, now all I have to do is fold one up and make some sawdust. As usual, don't hold your breath waiting for me...

LOL. Thanks for the reply. I have all the time in the world, which I think I'll use to read up on tapped horns...

Which value in Hornresp did you adjust to widen the baffle value. For purposes of practice I calculated the E-M properties and modeled the driver in the Insubnia enclosure knowing it was too wide. I get a Atc < Sd caution, at this point which values need to be changed to physically fit the driver that blow up the tuning?

Thanks.

All of them. If we just widen the baffle, S1-S4 will all increase, and the flare rate changes, like GPM explained here.

This messes up the "tuning" of the horn to the driver. I am not talking about phase or corner frequency, I am talking about adjusting the acoustic loading and reactance of the horn to match the characteristics of the driver. Just randomly selecting a value is a bad idea here. You've got to make sure the number you pick is appropriate for the driver.

So - I did.

I tried widths from 8.5" to 14", 11" looks pretty good. I'm sure I could tighten this up a touch more if I spent more time on it.

I suppose, if I were gonna do something like this right now, with no further work, I'd use an 11-inch width for the interior baffles, and I'd make sure the cutout was the right size for the Apex 8 and move it just a touch so that it's in the right place (edge of hole nearly touching the throat end). Other than that, I'd build it just like the pictures, and I'd use good ply, cause we're right at the edge of getting away without using any bracing.

Is it perfect? No. Is is pretty good? Yeah, I'd think so. 100 watts = 110 dB, groundplane.....

Not bad for less than 100 liters.

hi mike which program did you use to draw your sub ? btw nice work

I folded it in Sketchup. Todd gets the credit for making it all look nice though, he's far better with Sketchup than I am.

thanks will look 4 it . btw have you tried to modify and use an 8"driver ? i was thinking of using your folding technique to refold cowan's 30hz tapped horn which is(30.75 x39x 13) to (34"x48"x13 ) i think your folding design can make it to go to 20hz

Patience....

A slightly tweaked version that will work very well with a few 8" drivers is nearly done. I'll start another thread when I have it ready.

It will take more than a fold tweak to get this to 20 Hz, that will require a considerably longer horn.