I tried my hand at some phase plugs. I used Craftsman 23mm sockets. I used a metal chop saw to cut an inch off the square ratchet end. I then used a lathe to get them smooth and square. I only had a few minutes to give'em a try. They sound much better, they really seem to open up the sound. I hope to give them a better listen tonight.
Ryan
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Ryan
Those look great Ryan. FE166E? I hope to have a pair of FE206E horns up soon.
Feel free to shoot me an email. I'm in Winterpeg too.
Cheers,
Gio
Feel free to shoot me an email. I'm in Winterpeg too.
Cheers,
Gio
Hey Gio, no they are Fe206 in solo206 BLH from HumbleHomeMadeHifi
Glad to see a fellow winnipeger, what kind of projects do you have on the go?
Glad to see a fellow winnipeger, what kind of projects do you have on the go?
I'm in winnipeg too. Cool we've got a little group. I'm looking at building a centre channel for my HT.
Hi guys!
yan6: do you get much below ~50Hz? Are you using a sub - if so, what?
Some of my projects are in my signature.
Hope to have a FE206E BLH horn soon. I'm sure that will spur a low power amp build and a sub that can keep up.
Cheers
yan6: do you get much below ~50Hz? Are you using a sub - if so, what?
Some of my projects are in my signature.
Hope to have a FE206E BLH horn soon. I'm sure that will spur a low power amp build and a sub that can keep up.
Cheers
Nice job .
The first one is a little scary when you cut up the dust cap on an expensive or irreplaceable driver.
I have made some of aluminum and some brass ones.
The best results for me were made of very dense exotic hardwoods. My experiments were done with some nice little full range drivers bought from www.partsexpress.com for (us)$.49 on closeout I bought 24 of them. All showed a clear improvement most obvious in midrange detail. No test euipement purely subjective. When combined with Dammar varnish treatment to cones they were really quite surprising for a mere 49 cent speaker. I then installed some on a pair of Snell JII speakers with great results as well.
The first one is a little scary when you cut up the dust cap on an expensive or irreplaceable driver.
I have made some of aluminum and some brass ones.
The best results for me were made of very dense exotic hardwoods. My experiments were done with some nice little full range drivers bought from www.partsexpress.com for (us)$.49 on closeout I bought 24 of them. All showed a clear improvement most obvious in midrange detail. No test euipement purely subjective. When combined with Dammar varnish treatment to cones they were really quite surprising for a mere 49 cent speaker. I then installed some on a pair of Snell JII speakers with great results as well.
Tell us more.
Could you tell us more about your experiences with brass/aluminum phase plugs.
Just last night I was experimenting with making some brass phase plugs on some cheap drivers.
The plan is to do it for my FE167e's when I have the technique down.
My experiments are far from finished, but here's what I was up to last night:
-excuse the phone-camera pics.
#1 - Dustcapectomy
amp-guy said:
Could you tell us more about your experiences with brass/aluminum phase plugs.
Just last night I was experimenting with making some brass phase plugs on some cheap drivers.
The plan is to do it for my FE167e's when I have the technique down.
My experiments are far from finished, but here's what I was up to last night:
-excuse the phone-camera pics.
#1 - Dustcapectomy
Attachments
my process
#7 - clean ALL debris out of center of driver
#8 - remove tape from gap
#9 - screw in new phase plug
#10 - Enjoy.
Now it wasn't all as easy as it looks. I ran into a few problems.
-but that why I'm doing these experiments before I get to my FE167e's.
I have not done any listening yet, but will do soon.
#7 - clean ALL debris out of center of driver
#8 - remove tape from gap
#9 - screw in new phase plug
#10 - Enjoy.
Now it wasn't all as easy as it looks. I ran into a few problems.
-but that why I'm doing these experiments before I get to my FE167e's.
I have not done any listening yet, but will do soon.
Attachments
From that last picture, i'd suggest a plug that is fatter (so there is less gap) and longer (tip should reach to the top edge of the whizzer (at least))
dave
dave
Cool
Thanks Dave,
I was wondering about the dimensions.
- I was also wondering about how drilling a hole down the middle would effect the magnetic field?
I assume the pro's outweigh the con's.
Thanks Dave,
I was wondering about the dimensions.
- I was also wondering about how drilling a hole down the middle would effect the magnetic field?
I assume the pro's outweigh the con's.
Square??
Ryan, I really don't know what I'm talking about here, but my intuition tells me that a squared-top/sharp-edge would be a bad Idea.
-Is there a non-cosmetic reason why you made them this way?
yan6 said:
Ryan, I really don't know what I'm talking about here, but my intuition tells me that a squared-top/sharp-edge would be a bad Idea.
-Is there a non-cosmetic reason why you made them this way?
Re: Square??
It can't be any worse than this http://www.decware.com/newsite/DFR8.htm
.....and a hex socket is substantially cheaper than the 200$ they want for it 😀
Not that either will work as well as a bullet shaped, or a mushroom shaped plug.
Magura 🙂
Raphael Shaw said:
It can't be any worse than this http://www.decware.com/newsite/DFR8.htm
.....and a hex socket is substantially cheaper than the 200$ they want for it 😀
Not that either will work as well as a bullet shaped, or a mushroom shaped plug.
Magura 🙂
For the extra work involded in making a bullet or mushroom shape phase plug or the cost of buying some, I thought I would try the socket. I had read of a few people trying this with success and knowing of the decware design, I thought this cant be too far off. After some listening I have found that most of the midrange shout is gone and the sound seems much less directional. As far as I'm concered this has done it for me!
Gio, just by ear using the blink test cd, I can hear 31.5Hz no problem, but it is not quite full volume (with respect to the other tracks). 40Hz seem to be full volume. No sub right now, I'm not sure I need one.
Gio, just by ear using the blink test cd, I can hear 31.5Hz no problem, but it is not quite full volume (with respect to the other tracks). 40Hz seem to be full volume. No sub right now, I'm not sure I need one.
planet10 said:
I agree mine have about the same clearance as the voice coil/pole piece. I didn't want to take the chance of metals chips getting into the gap so mine are fastened with a small amount of JB weld and positioned with shims till set up. never tried one of the mushroom shapes though.
anybody seen Steve Deckart's new phase plugs?
vac tubes? yep thats right.
http://www.decware.com/newsite/DFR6.htm
I don't know about this one, seems to me the internals would resonate badly. But hey Iam not adverse to at least try it.
vac tubes? yep thats right.
http://www.decware.com/newsite/DFR6.htm
I don't know about this one, seems to me the internals would resonate badly. But hey Iam not adverse to at least try it.
yan6 said:
Somewhere deep in my email, i have comments from a customer, that tried both the decware socket and my plugs. The sockets are back in his toolbox (i've not tried the socket -- getting it out after putting it in is not easy)
dave
amp-guy said:
Me too... and we did find that. The idea is not original to Deckart (IIRC, either Cal's or Chris')... see the picture published in this forum post (ie Aug 05 at the 2nd annual Vancouver Island diyFEST (#6 21 aug 09)) at least a year before he released his new plug
http://www.diyaudio.com/forums/attachment.php?s=&postid=712922&stamp=1125340084
http://www.diyaudio.com/forums/showthread.php?postid=712940#post712940
dave
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