Half Chang build

Jump to Latest
#401
jorge1 said:
many thanks gychang and christian...a pix is worth a thousand words so it is said - tis so in my case, and chris, thanks for the links - not possessed of golden ears nevertheless i'll "splurge" on the daytons...again, thank you both for your help and thanks to all on the thread for making this stuff comprehensible, and fun! will post pix when the project is completed...be well,

jorge
Click to expand...


nice to be able to help... gychang
 
#402
my half chang boxes

hiello everyone this is my first ost i have read alot here and i am learning this is my first speaker build i wanted to know what the wood peice in the center of the cone dose and also how to install it here are some pics of my boxes it took me 12 hours to build them a few coats of poly and there all done cant wate to build more
 
#406
d to the g said:


Forgot to mention that I was already running this combo.

The highs are decent. This speaker just can't do vocals. Adam, I'll have to borrow some of the damar and pick up some foam. It's not like I'm going to be out out large sums of cash by trying it out.
Click to expand...


planet10 said:


I'd recommend damar on the whizzer, puzzlekoat on the cone.

dave
Click to expand...

Puzzlecoat, Damar, Epoxy putty, and duct seal applied. Much better.

Up next:
The 98 penny tweak (I've now got whizzer rattle from large bass hits), and dustcap four hole treatment (apparently this clears up the 1k peak which I decided to eq out for the time being.)

Drivers are being left on to "rebreak" them in. Hopefully 89.3 the current works some magic for me!
 
#409
d to the g said:

Drivers are being left on to "rebreak" them in. Hopefully 89.3 the current works some magic for me!
Click to expand...


89.3 will cause your drivers to want to stop working and also collect benefits from you while not used. On the other hand, 100.3 may make them want to charge you for every note played. Stick with anything by Husker Du, left on repeat. My Changs like local music...
 
#410
fwater said:



89.3 will cause your drivers to want to stop working and also collect benefits from you while not used. On the other hand, 100.3 may make them want to charge you for every note played. Stick with anything by Husker Du, left on repeat. My Changs like local music...
Click to expand...


best break-in music - "Kenny G, Yanni & Friends, Live at Ceaser's Palace" * - your system never sounded this smuve :smash:


* joke, (I think)
 
#411
chrisb, have you ever heard the albums "Time to Make Love- the Sounds of Cats Mating" or "101 Studies in Snoring" by Celine Dion? Produced by John Tesh, these recording powerhouses. The transients in the song "Outside My Window on a Worknight" from TML-SCM are great for the torturous stretching of a speaker's spider while keeping the overall duty cycle low so as not to thermally stress the driver. "Mouth Breather" is another good one, lots of midrange energy...
 
#415
merickrc...nice job on the boxes - i too am working on a pair and am wondering how you managed the glue-up and clamping of the steps; also, looks like plywood for the sides etc. but i don't see striations on the step edges - did you use board lumber here?

sorry that i can't offer any advice on sound quality as i am technically illiterate and just barely ok in the wood shop...

thanks,
jorge
 
#416
the glue up is done by glueing one long side to all other middle panels then i finished by glueing the last long side on and all those steps at the bottom of the box are sheets of birch plywood that i glued in place it takes a good bit of time to do but looks real nice the total time to build the boxes took me a total of 12 hours start to finish
 
#419
Re: help mids are to high

merickrc said:
please help i bult half changs and have the fostex 207 in them but it seams like i here to much mds and highs is there any way to take some of the mids away i dampened the back of the box and one side what else can i do
Click to expand...


I built a pair of HCs using FE206e. I put foam damping on the top, back & one side. I also use baffle step correction (BSC) consisting of a 1 mH air core inductor in parallel w/ 5 ohm 10 watt Mills resistor. I don't know what the FE207 would need. For more on BSC, check out Martin's web site: quarter-wave.com/General/General_Articles.html. (Ignore the zobel network.)

Note that the resistance is critical: a change of 0.5 ohm is significant. Experimentation is required to match the speakers to your room & equipment. I know this is heresy to many in the full range community, but I find my full range systems rather poor w/o BSC.

Cheers, Jim
 
#420
Re: help mids are to high

Originally posted by Jim Shearer

I know this is heresy to many in the full range community, but I find my full range systems rather poor w/o BSC.

Cheers, Jim
Click to expand...

OK. I've had quite enough of that kind of talk.

I'll gather a supply of torches. If the rest of you would be kind enough to bring your own pitchfork, we can take care of this troublemaker rather quickly.

Rick
P.S. I'm using 1.0 mH and 4 ohms in my Half-Chang BSC.
 
You must log in or register to reply here.
Top Bottom