The "REECARRAY" build! - Page 22 - AVS Forum
Forum Jump: 
Reply
 
Thread Tools
post #631 of 655 Old 04-30-2010, 08:14 AM
AVS Special Member
 
kbgl's Avatar
 
Join Date: Mar 2005
Posts: 1,647
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by reecew View Post

Thats exactly what ive done lol with both cd's with just the 2.2uf cap. Im going to do it again when i get some time...hopefully that will be this weekend sometime. Ill post what i end up with.

Could there be a setting in HOLM that is changing the level?

Try measuring the tweeter with the same color button as the woofer. I know you can raise or lower the response after measuring, but I believe that it goes back on the next measurement.
kbgl is offline  
Sponsored Links
Advertisement
 
post #632 of 655 Old 04-30-2010, 08:15 AM
AVS Addicted Member
 
penngray's Avatar
 
Join Date: Feb 2006
Location: Florida
Posts: 26,779
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 30
He might want to try and set all HOLM settings to default.

It is not "open-minded" to reject knowledge - Bob Lee
penngray is offline  
post #633 of 655 Old 04-30-2010, 08:20 AM
AVS Special Member
 
kbgl's Avatar
 
Join Date: Mar 2005
Posts: 1,647
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by reecew View Post

Thats exactly what ive done lol with both cd's with just the 2.2uf cap. Im going to do it again when i get some time...hopefully that will be this weekend sometime. Ill post what i end up with.

Check the distortion of the CD. If it's damaged, I would think that the distortion would increase.
kbgl is offline  
post #634 of 655 Old 04-30-2010, 12:38 PM
Advanced Member
 
ZilchLab's Avatar
 
Join Date: May 2009
Location: Berkeley, CA
Posts: 944
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
Quote:
Originally Posted by penngray View Post

I ran full sweeps (20Hz on up) at 70dB levels without a cap and it was and is still fine. I ran the sweep 20 times.....

As I posted before, the key word is "CARFULLY"

Im a big fan of doing things against anyone that demands "Do NOT" Its like when mothers told their kids Do NOT sit close to the TV

It's just not a problem, Penn, since you're gonna replace Reece's drivers if he blows them up following your advice, right?

[Heed thy sig.... ]

.
....Crank up the SIGNAL ... cut back the noise....
ZilchLab is offline  
post #635 of 655 Old 04-30-2010, 04:56 PM
AVS Addicted Member
 
penngray's Avatar
 
Join Date: Feb 2006
Location: Florida
Posts: 26,779
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 30
Quote:
Originally Posted by ZilchLab View Post

It's just not a problem, Penn, since you're gonna replace Reece's drivers if he blows them up following your advice, right?

[Heed thy sig.... ]

hah, if he does blow them up then he didnt follow the important "Be Carefull" part.

I will buy them off him for $20 a piece

It is not "open-minded" to reject knowledge - Bob Lee
penngray is offline  
post #636 of 655 Old 05-22-2010, 04:39 PM
AVS Special Member
 
snickel's Avatar
 
Join Date: Dec 2007
Location: South central Kansas
Posts: 1,158
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Time for a update. This project isn't dead,Reece has been working seven days a week and will be for the next few months. He will get back to it when work slows down.
snickel is offline  
post #637 of 655 Old 05-22-2010, 06:20 PM
Advanced Member
 
ZilchLab's Avatar
 
Join Date: May 2009
Location: Berkeley, CA
Posts: 944
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
We've commenced working on the eWave variant using the same QSC waveguide and Celestion driver:

http://techtalk.parts-express.com/sh...39#post1646039

There's ~4 dB of HF headroom above the Eminence Deltalite II 2510 woofer, spec'd at 97.3 dB

.
....Crank up the SIGNAL ... cut back the noise....
ZilchLab is offline  
post #638 of 655 Old 05-22-2010, 09:19 PM
AVS Addicted Member
 
penngray's Avatar
 
Join Date: Feb 2006
Location: Florida
Posts: 26,779
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 30
Thank you zilch, I was wondering when one would happen so I could use my drivers. I will pick up the Deltalite and copy the build for a friend!!

Although I wish you would use the 1745 instead of the 1425 so you could push it a little lower for the woofer. I believe they were not much different in cost and they both fit the HPR122i waveguide.

It is not "open-minded" to reject knowledge - Bob Lee
penngray is offline  
post #639 of 655 Old 08-27-2010, 06:23 PM
AVS Special Member
 
mayhem13's Avatar
 
Join Date: Jan 2008
Location: nj
Posts: 3,958
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 13
Hey Reecew, what ever happened to this project? I thought the idea had a lot of promise and the thread seemed like it was going in the right direction......
mayhem13 is offline  
post #640 of 655 Old 08-29-2010, 10:32 AM
AVS Addicted Member
 
penngray's Avatar
 
Join Date: Feb 2006
Location: Florida
Posts: 26,779
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 30
From what I remember, the sound quality just was not there.

It is not "open-minded" to reject knowledge - Bob Lee
penngray is offline  
post #641 of 655 Old 08-29-2010, 12:54 PM
Advanced Member
 
ZilchLab's Avatar
 
Join Date: May 2009
Location: Berkeley, CA
Posts: 944
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
Reece was unable to get the requisite SPL from the waveguide and gave up.

My subsequent work with 1425 revealed that it is, indeed, "wimpy" in comparison to other compression drivers, but Pete and I were able to successfully match it up with the Deltalite II 10" pro driver.

Assuming Reece's 1425s perform the same as mine, I suspect that once the requisite power shading was implemented in his arrays, the project could succeed. It appears, however, that both his enthusiasm and commitment have waned....

.
....Crank up the SIGNAL ... cut back the noise....
ZilchLab is offline  
post #642 of 655 Old 08-29-2010, 01:36 PM
AVS Special Member
 
snickel's Avatar
 
Join Date: Dec 2007
Location: South central Kansas
Posts: 1,158
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Yep he gave up,tried to sell everthing to me but I don't have the room for big speakers
snickel is offline  
post #643 of 655 Old 08-29-2010, 02:19 PM
AVS Special Member
 
mayhem13's Avatar
 
Join Date: Jan 2008
Location: nj
Posts: 3,958
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 13
I believe i saw in one of the first posts he had a pair of the 152i guides. Does anyone know why he moved away from that WG? It would seem that the wider baffle required would have helped with diffraction of the midwoofers as well as reduced the need for BSC. There's so many nice buyout woofers over at PE, i'm tempted to take up a similiar array type system. Using those midwoofers and the 152i along with the D220i, it's possible a serious performing system could emerge on substantial budget. If anyone has any thoughts on the subject, feel free to post. I'll put together a thread if i head in that direction.
mayhem13 is offline  
post #644 of 655 Old 08-29-2010, 02:22 PM
Advanced Member
 
Starkiller4299's Avatar
 
Join Date: Jan 2007
Location: SW MI
Posts: 526
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 12
That's too bad to hear, snickel. I got all excited when I checked the forum today and there's a whole lot of great threads (this one included) with new posts...but not many have had further progress or seen sight of the originator in months.

We love overkill. -- gperkins1973
My fuse box is my HPF. -- kryptonitewhite

2x18 Ficar IB3 Infinite Baffle Manifold Install
Starkiller4299 is offline  
post #645 of 655 Old 08-29-2010, 02:39 PM
AVS Special Member
 
snickel's Avatar
 
Join Date: Dec 2007
Location: South central Kansas
Posts: 1,158
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Reece just offered to bring everything to be a let me play work on it
snickel is offline  
post #646 of 655 Old 08-29-2010, 02:41 PM
AVS Special Member
 
snickel's Avatar
 
Join Date: Dec 2007
Location: South central Kansas
Posts: 1,158
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
lol I can't even use HOLM and all the equipment Reece was using for testing was mine.
snickel is offline  
post #647 of 655 Old 08-29-2010, 02:50 PM
Advanced Member
 
Starkiller4299's Avatar
 
Join Date: Jan 2007
Location: SW MI
Posts: 526
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 12
Sweet. I'm sure there's more than a few talented individuals out there who would be happy to lend a hand with measuring. Think of it as adding value to your equipment .

We love overkill. -- gperkins1973
My fuse box is my HPF. -- kryptonitewhite

2x18 Ficar IB3 Infinite Baffle Manifold Install
Starkiller4299 is offline  
post #648 of 655 Old 08-29-2010, 05:41 PM
Advanced Member
 
ZilchLab's Avatar
 
Join Date: May 2009
Location: Berkeley, CA
Posts: 944
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
Quote:
Originally Posted by mayhem13 View Post

I believe i saw in one of the first posts he had a pair of the 152i guides. Does anyone know why he moved away from that WG? It would seem that the wider baffle required would have helped with diffraction of the midwoofers as well as reduced the need for BSC.

Wider baffles? The suckers are huge as-is. Less BSC? So the array would have even more SPL?

Nah, as I said, with power shading the array, the 1425s could probably be made to work. Bolt-on D220Tis would get more HF SPL, if required.

[Don't quote me on that without somebody making the comparison, tho.... ]

.
....Crank up the SIGNAL ... cut back the noise....
ZilchLab is offline  
post #649 of 655 Old 08-29-2010, 06:49 PM
AVS Special Member
 
mayhem13's Avatar
 
Join Date: Jan 2008
Location: nj
Posts: 3,958
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 13
Why even power taper/shade? Use a .5 inductor between the top and bottom woofers instead which should solve other characteristic array issues as well.

Forget the 1425's, the D220's strength on the the 152i appears to be an unbeatable combo given the cost according to the measurments on the SR project.
mayhem13 is offline  
post #650 of 655 Old 08-29-2010, 07:49 PM
Advanced Member
 
ZilchLab's Avatar
 
Join Date: May 2009
Location: Berkeley, CA
Posts: 944
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
Everybody was hot for the 122i, so I did it. D220Ti is sweet on 152i, and may also be on 122i.

[I can't do it all.... ]

.
....Crank up the SIGNAL ... cut back the noise....
ZilchLab is offline  
post #651 of 655 Old 08-29-2010, 08:10 PM
AVS Special Member
 
Looneybomber's Avatar
 
Join Date: Sep 2006
Location: Lawrence, KS
Posts: 4,668
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Liked: 23
Snickel, so how much longer till you're done? 2 weeks?

Hey I'm in Wichita every month and noticed there's a few DIYer's in the area. Any word on GTG's?

YID DIY
Looneybomber is offline  
post #652 of 655 Old 08-29-2010, 09:52 PM
AVS Special Member
 
mayhem13's Avatar
 
Join Date: Jan 2008
Location: nj
Posts: 3,958
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 13
Quote:
Originally Posted by ZilchLab View Post

[I can't do it all.... ]

And i'm sure everyone's gratefull for the work you've already done! While the 122i was very intriguing on appearance, the proof wasn't in the pudding as pattern control is lost at 2khz and below......which is OK for some designs. Heck it's been the XO point of choice for soft dome 2 ways for more than a decade. But CD loaded WG's are pushing the gamut of low XO points. It seems that the tradeoff of pattern control vs power response hasn't been won yet as the below 1khz builds are getting rave reviews from the listening clan. I'd first suspect that it lies in the nature of the human ear and it's ability to discern and detect detail so well above 1khz. The design principle of moving the XO point BELOW this range has it's benefits.....Are WG's capable of holding pattern control AND loading to 800hz or so viable? Sure.....but they're big and expensive as are the CD's that load em. Can Ewave get there? With 152i and the right CD, pretty close i bet. The sacrifice in value as these are ECO friendly might be power handling. While mfgrs suggested freq ranges suggest otherwise, i say it's safe to assume that these limits are set assuming extreme output ranges as in the commercial applications they were designed for in the first place. I'd be willing to bet that myself and a lot of others would be running for the door waaay before the limits were reached of the 220Ti at 1khz...or DE250 for that matter. Maybe 1.4" drivers and horns are the answer. Some might say they sacrifice 15khz and above. Well that might be a problem for some, but not me as i can't hear a lick above 15khz anyways and unless in a pretty quiet setting with a very low noise floor i suspect there's little usefull info up there for those that can. Surely nothing a simple super tweeter crossed 1st order couldn't fix anyways.

The point souce/line source Ewave hybrid platform is very intriguing but will need the support of those already involved in the Ewave progression. THERE.....I've said it!
mayhem13 is offline  
post #653 of 655 Old 08-30-2010, 05:51 AM
Advanced Member
 
Starkiller4299's Avatar
 
Join Date: Jan 2007
Location: SW MI
Posts: 526
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 12
Quote:
Originally Posted by mayhem13 View Post

line source Ewave hybrid platform

Ha! You coin a nice phrase. I vote that it gets permanent usage .

We love overkill. -- gperkins1973
My fuse box is my HPF. -- kryptonitewhite

2x18 Ficar IB3 Infinite Baffle Manifold Install
Starkiller4299 is offline  
post #654 of 655 Old 08-30-2010, 08:17 AM
AVS Addicted Member
 
penngray's Avatar
 
Join Date: Feb 2006
Location: Florida
Posts: 26,779
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 30
Quote:
Originally Posted by mayhem13 View Post

Why even power taper/shade? Use a .5 inductor between the top and bottom woofers instead which should solve other characteristic array issues as well.

Forget the 1425's, the D220's strength on the the 152i appears to be an unbeatable combo given the cost according to the measurments on the SR project.

I think the D220 sound like crap....but that is just me and it could be the screw on adapter or the other PE waveguide I tested with the D220.

Why not use the Celestion 1745 which is the driver QSC uses in the real HPR-152i?

Quote:


With 152i and the right CD, pretty close i bet.

We have tried many of them, it looks like the Beyma Augerpro is using is pretty sweet. The BMS4550 or the Radian 475 might be great too but for low cost I think the 1745 is just fine and it measures well with the 152. I would say better then the D220.

It is not "open-minded" to reject knowledge - Bob Lee
penngray is offline  
post #655 of 655 Old 08-30-2010, 02:16 PM
Advanced Member
 
ZilchLab's Avatar
 
Join Date: May 2009
Location: Berkeley, CA
Posts: 944
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 11
Quote:
Originally Posted by penngray View Post

I think the D220 sound like crap....but that is just me and it could be the screw on adapter or the other PE waveguide I tested with the D220.

Bolt-on D220Ti with 152i and a rational highpass filter with the requisite HF comp is quite a nice combination, in my experience.

I've built with it three times now, and others' builds are appearing. It's an excellent entry-level introduction....

.
....Crank up the SIGNAL ... cut back the noise....
ZilchLab is offline  
Reply DIY Speakers and Subs

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off