Couple more question. In the plans it appears the speaker is slightly recessed into the baffle. Is there any reason to do this? To those who have built a half-Chang, did you bother to do this step?
Personally, I would not bother recessing an FE207E or any Fostex with so thin a flange, although definitely some people do.
With the 207's plastic black beveled / ribbed ring around the driver, in my newbie opinion, recessing is probably only for aesthetic reasons anyway.
I do have one Fostex box with a recessed driver opening, and veneer, and it has a very narrow slot which reveals the material underneath the veneer. So to me, not recessing seems slightly cleaner but I'm sure opinions vary.
With the 207's plastic black beveled / ribbed ring around the driver, in my newbie opinion, recessing is probably only for aesthetic reasons anyway.
I do have one Fostex box with a recessed driver opening, and veneer, and it has a very narrow slot which reveals the material underneath the veneer. So to me, not recessing seems slightly cleaner but I'm sure opinions vary.
Cool thanks for the info.
Also, Fostex speaker came with a round mounting gasket, anyone using this or not?
Also, Fostex speaker came with a round mounting gasket, anyone using this or not?
Extensive testing was done by the BBC when they designed their LS3/5A and it makes a difference for the dispersion of the sound. The LS3/5A has a small square of felt around the T27 (tweeter) to improve dispersion.
Hi Amadeus,
I think the felt (or cork) is a great idea. I can imagine it's extremely useful on a tweeter but the FE207E has that plastic ring just outside the surround, and it's at least as tall as the frame. 8" drivers also beam a lot.
But putting felt or cork around the frame is something I'd definitely like to try! That is a cool suggestion.
I think the felt (or cork) is a great idea. I can imagine it's extremely useful on a tweeter but the FE207E has that plastic ring just outside the surround, and it's at least as tall as the frame. 8" drivers also beam a lot.
But putting felt or cork around the frame is something I'd definitely like to try! That is a cool suggestion.
An externally hosted image should be here but it was not working when we last tested it.
I'll have these up and running this weekend.
I impressed with the amount of bass, its more than I expected. The speakers are very mid forward. Listening to James Taylor they make his voice sound overly harsh. Had to use a non-tube amp for now. One of the channels on my new cheapie Chinese amp isn't working. Will get my dad, a very good amp tech, to check it out.
I got the phase plugs about 10 minutes ago! Thanks for the quick turnaround. Haven't even had a chance to open them up yet.
I only mailed them on Wednesday!!! So much for the estimated 10 day travel time.
Give the drivers at least 100 hrs before you install (to weed out any driver issues before voiding the warranty by installing the plugs)
dave
Give the drivers at least 100 hrs before you install (to weed out any driver issues before voiding the warranty by installing the plugs)
dave
if you are surprised with the amount of bass you will not believe your ear when 100+ hours will be passed.
The phase plug is a great mod too. I suggest you to wait to mod the driver to understand the changes they provide.
V.
The phase plug is a great mod too. I suggest you to wait to mod the driver to understand the changes they provide.
V.
if you are surprised with the amount of bass you will not believe your ear when 100+ hours will be passed.
The phase plug is a great mod too. I suggest you to wait to mod the driver to understand the changes they provide.
V.
The phase plug is a great mod too. I suggest you to wait to mod the driver to understand the changes they provide.
V.
Quick question. Im planning on the Half Changs for my 207s. This is my first DIY speaker. Looking at the plans, I see no binding posts. Where are they supposed to be?
EDIT: Also, which portions of the cabinet should have damping material? Or should I just experiment and see what works best? Wheres a good place to start with damping material?
EDIT: Also, which portions of the cabinet should have damping material? Or should I just experiment and see what works best? Wheres a good place to start with damping material?
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Wherever you like. I'm not going to tell people where to put their binding posts. 😛
Damp per a BR cabinet; line the top, back & one side to start with & adjust to requirements from there. Benefits of DIY: every room is different, so you tailor it to suit yourself.
Damp per a BR cabinet; line the top, back & one side to start with & adjust to requirements from there. Benefits of DIY: every room is different, so you tailor it to suit yourself.
>>> Wherever you like. I'm not going to tell people where to put their binding posts.
LOL, i have not used binding posts for years... two wires sticking out the back thru a tight hole.
LOL, i have not used binding posts for years... two wires sticking out the back thru a tight hole.
Thanks guys! I wasnt sure, because Ive read so much about how finicky single full range driver cabinets can be. I have my FE207s in simple 30L BR cabinets right now with Planet_10 phase plugs. While they sound great, I feel the Half Chang would make them better. Ill probably re-purpose the old cabs with Pioneer B20s or the like.
>>> Ill probably re-purpose the old cabs with Pioneer B20s or the like.
That's a great idea actually.
That's a great idea actually.