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post #181 of 655 Old 03-14-2010, 09:58 PM - Thread Starter
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Not at all, it would be horrible. They would be stable on these thats for sure! Thats why i built them so big. If one tipped from anything it would be disasterous since the box is made of mdf, it would chip, break, crack, all the above. I probably couldve gone a few inches smaller and still had soso stability though.

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post #182 of 655 Old 03-15-2010, 03:31 AM
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They look good.... I don't see the THT anywhere...

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post #183 of 655 Old 03-15-2010, 04:56 AM
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Quote:
Originally Posted by reecew View Post

Oh well. I guess im going for more of a functional design than pretty. Cant please everyone. I just cant envision a rectangular base looking better. I had given the though to cutting the base in half so it's just half the octagon and flat backed.

You guys suck! LOL. Now you have me questioning my base. Heres what it look like in the room mind you it will be painted all black. These will probably be the last pics i post of the build!

I like your base!! You NEED your base...end of discussion

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post #184 of 655 Old 03-15-2010, 06:19 AM
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I have been thinking about that base and how much bass that array puts out and when I build one, Im going to throw a 15" woofer in a box below and use that as my bass.

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post #185 of 655 Old 03-15-2010, 07:22 AM
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Form follows function!

Nice job. I like 'em.
Sturdy, too.
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post #186 of 655 Old 03-15-2010, 11:20 AM
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Bolt 'em as outriggers to the sides of the console at whatever height desired....

.
....Crank up the SIGNAL ... cut back the noise....
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post #187 of 655 Old 03-15-2010, 11:49 AM - Thread Starter
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Quote:
Originally Posted by ZilchLab View Post

Bolt 'em as outriggers to the sides of the console at whatever height desired....

I was thinking of this man. Ill have to look and see what i can find that may allow me to do this.

Thanks guys, its large for a reason. These arrays are really top heavy and on carpet need more stability than on solid type floors. Sure i could shrink it down 2" all the way around and probably still have good stability but i dont know if that would make much of a difference in the looks department.

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post #188 of 655 Old 03-15-2010, 02:14 PM
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Reecew, you are quick with your array. I have a favor to ask: listen to your favorite tune at normal listening level at your seating position, 3 feet backward and forward of your seating postion. Let me know how do each position sound. thanks
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post #189 of 655 Old 03-15-2010, 02:37 PM - Thread Starter
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Quote:
Originally Posted by danny1974 View Post

Reecew, you are quick with your array. I have a favor to ask: listen to your favorite tune at normal listening level at your seating position, 3 feet backward and forward of your seating postion. Let me know how do each position sound. thanks

I would but the one i had up and running has the drivers out now and getting ready for primer and paint. When i had it up and running i let it play some music continuously for a few minutes while i was on my computer. Which is directly behind my LP facing the TV atleast 22'+ away from where the speakers will be. And it still sounded good and loud back here. But again i wasnt doing any sort of listening test anymore i had already made up my mind that i liked it in my LP. It will probably be a little bit till i can get them up and running again and back in place.

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post #190 of 655 Old 03-15-2010, 02:41 PM
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I love the bases you made, those look freaking cool!

I am so ripping off your ideas

Whether you think you can or think you can't...you're correct!
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post #191 of 655 Old 03-15-2010, 02:55 PM - Thread Starter
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Quote:
Originally Posted by Noxdowne View Post

I love the bases you made, those look freaking cool!

I am so ripping off your ideas


Thanks man ! I was going square with them and next thing you know i have some massive base's that my wife mistakenly thought was some sort of wierd speaker box haha. She got pissed about it because i told her i was building the arrays and nothing else. Women theyre crazy too bad we cant live without them lol.

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post #192 of 655 Old 03-15-2010, 04:18 PM
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I happen to think that those speaker bases look really good and serve a good purpose. The trim gives it a nice touch too and you never have to worry about them tipping over now! Either way, its all about personal preference and if you like it that's what counts ...they should look really nice once painted!
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post #193 of 655 Old 03-15-2010, 09:19 PM - Thread Starter
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Quote:
Originally Posted by iJC View Post

I happen to think that those speaker bases look really good and serve a good purpose. The trim gives it a nice touch too and you never have to worry about them tipping over now! Either way, its all about personal preference and if you like it that's what counts ...they should look really nice once painted!

Appreciate it man. I made a little more progress today. I got the roundovers on the base's and on the boxes done. And i got them mounted to the base's. The round over's made it look much better IMO. I had to borrow the router from my buddy mike (snickle). This was my first time using one and had great results. A router will for sure be my next tool purchase .

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post #194 of 655 Old 03-16-2010, 10:19 AM
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What do you estimate each array to weigh?
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post #195 of 655 Old 03-16-2010, 10:54 AM - Thread Starter
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Originally Posted by tsloms View Post

What do you estimate each array to weigh?

Theyre roughly 100lbs maybe a little more with all the drivers in them. It took one sheet of mdf per box minues the driver holes and few 3 or 4" strips about 1 foot to 2 feet long each. Not as much as some others ive seen but its still heavy enough to hurt a small child if it fell over on top of them and heavy enough to destroy the mdf if it tipped over. The footprint of the box is 12"x9" and stands 64" tall so hopefully you could imagine the instability especially on a frieze carpet.

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post #196 of 655 Old 03-16-2010, 08:14 PM
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re: base

http://upload.wikimedia.org/wikipedi...seAnimated.gif

http://en.wikipedia.org/wiki/All_you...e_belong_to_us




Fortune Cookie says;

Tell spouse you build 16 foot speakers, then meet half way and settle on 8 foot size

Ancient Chinese secret on how to get the spouse to accept madness
projects.



The storm was gone, but dark clouds still hung around
The perfect setting for things to come......

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post #197 of 655 Old 03-16-2010, 09:54 PM - Thread Starter
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Or you could go my route just tell her your going to build some speakers and leave the size out of it lol. Didnt make much of an progress at all today. I started to primer them and only got one box done before i had to stop.

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post #198 of 655 Old 03-16-2010, 10:29 PM
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HAHAHahahahaha Thy. Epic gif there.

Reece--ever consider painting everything black except the trim (keep it white)? Might make for an interesting contrast...

Either that, or paint flames on it. The rocket is ready for launch, baby! I'll have to dig up that shuttle launch mpeg for you...

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post #199 of 655 Old 03-17-2010, 06:33 AM - Thread Starter
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I've been kicking around several ideas on the finish. They're just so big for me to get too fancy. I don't enjoy the finishing process as much as I do the construction. And that's ashame since everyone will notice the finish before the structural features. But I've been thing maybe a high glosse base, either piano black or grantie finished like ericH, subs and his little full range arrays. And maybe something different on the baffle than the rest of the enclosure. But I'm anxious just to get them done my x-over parts should be here tomorrow so once they get here nothings stopping me from finishing. Well see what I come up with hopefully its half way decent.

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post #200 of 655 Old 03-17-2010, 06:36 AM
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So why do you guys want me to put a 5 uF cap on the round waveguide/1425 CD (Im assuming wired in series)?

Isnt that just a 6dB HP filter @ 8000Hz?

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post #201 of 655 Old 03-17-2010, 06:51 AM
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Quote:
Originally Posted by thylantyr View Post


Fortune Cookie says;

Tell spouse you build 16 foot speakers, then meet half way and settle on 8 foot size

Ancient Chinese secret on how to get the spouse to accept madness
projects.

Are you sure that wasn't Confucius?
He has been know to talk DIY audio!

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post #202 of 655 Old 03-17-2010, 07:02 AM - Thread Starter
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Well its a 6db filter but don't think its centered at 8khz. It should start around 4khz andd be down 3db at 4khz and start falling from there. Just curious if I could get away with that vsa building the bridged T. When I made my order which is posted on like post 165 and 166 2 of everything and 6 4ohm resistors. I don't know if that's enough components to make the bridged-t if it is I'd just assume make that. If not ill have to rig something up like the 5uf cap.

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post #203 of 655 Old 03-17-2010, 07:12 AM
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Quote:
Originally Posted by reecew View Post

Well its a 6db filter but don't think its centered at 8khz. It should start around 4khz andd be down 3db at 4khz and start falling from there. Just curious if I could get away with that vsa building the bridged T. When I made my order which is posted on like post 165 and 166 2 of everything and 6 4ohm resistors. I don't know if that's enough components to make the bridged-t if it is I'd just assume make that. If not ill have to rig something up like the 5uf cap.


Yeah, I was using 4 ohm.

Shoud we use 8 ohm? or 4 ohm?...its probably somewhere in between and I should get one and measure



I use this chart


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post #204 of 655 Old 03-17-2010, 07:29 AM - Thread Starter
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Should be 8 ohm. I have no clue about x-overs lol. I've run across that chart before myself pretty cool. I'm finally figuring out what it means haha. I just wish zilch had already made a x-over for this CD and WG. I believe he has the CD's but not the WG.

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post #205 of 655 Old 03-17-2010, 07:34 AM
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Quote:
Originally Posted by reecew View Post

Should be 8 ohm. I have no clue about x-overs lol. I've run across that chart before myself pretty cool. I'm finally figuring out what it means haha. I just wish zilch had already made a x-over for this CD and WG. I believe he has the CD's but not the WG.

Yeah, that chart is a first order (6dB slope) high pass chart.

The ohms on the 1425 measure to 4.8 so its going to be somewhere between the 4000 and 8000Hz.

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post #206 of 655 Old 03-17-2010, 07:55 AM - Thread Starter
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Yea that's definitly a wierd reading for a supposed 8ohm driver. Well see what happens, it just would be nice to see what it would actually do vs. What its suppose to do. I probably should just do the bridged-t if I can figure that out that's what I may do.

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post #207 of 655 Old 03-17-2010, 08:03 AM
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Quote:
Originally Posted by reecew View Post

Yea that's definitly a wierd reading for a supposed 8ohm driver. Well see what happens, it just would be nice to see what it would actually do vs. What its suppose to do. I probably should just do the bridged-t if I can figure that out that's what I may do.

but is it an 8-ohm driver? I never assumed it was and I never found any info on what it should have been.

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post #208 of 655 Old 03-17-2010, 08:23 AM - Thread Starter
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Its listed as 8ohm on celestions site. Check the link on the first page of this thread.

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post #209 of 655 Old 03-17-2010, 10:03 AM
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Quote:
Originally Posted by reecew View Post

Yea that's definitly a wierd reading for a supposed 8ohm driver.

No, it's not. 8 Ohms is nominal impedance at some frequency. You're reading DCR, the DC resistance, not the same spec.

You want to know the impedance, an AC parameter, you measure that at the frequency of interest....

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post #210 of 655 Old 03-17-2010, 10:43 AM
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Quote:
Originally Posted by ZilchLab View Post

No, it's not. 8 Ohms is nominal impedance at some frequency. You're reading DCR, the DC resistance, not the same spec.

You want to know the impedance, an AC parameter, you measure that at the frequency of interest....

I posted the impedance chart for it earlier, its no where near 8 ohms at any point on the curve so I not sure why the site lists it at 8 ohms.

here it is again...


Of course those two peaks might be where it averages out to 8 ohms

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