Coaxials: Another DIY Group Project. - Page 14 - AVS Forum
Forum Jump: 
 125Likes
Reply
Thread Tools
post #391 of 850 Old 07-20-2014, 07:11 AM
AVS Special Member
 
Sibuna's Avatar
 
Join Date: Apr 2010
Location: Western NY
Posts: 2,261
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 281 Post(s)
Liked: 347
Quote:
Originally Posted by chrapladm View Post
While this doesnt matter to most what are the maximum SPL levels you can achieve with the 8" Coax? 10"?

Just trying to see if I can use an 8". Again this will be used outside. Most likely the 8 will be fine for my app. Just curious of the answer is all. Has anyone done any "MTG90," like videos of the coaxials?
Ive been meaning to with the Volt-8 but Ive been super busy and every time i think i have time its raining
Sibuna is online now  
Sponsored Links
Advertisement
 
post #392 of 850 Old 07-20-2014, 07:35 AM
AVS Special Member
 
chrapladm's Avatar
 
Join Date: Mar 2010
Posts: 2,975
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 254 Post(s)
Liked: 103
Quote:
Originally Posted by Sibuna View Post
Ive been meaning to with the Volt-8 but Ive been super busy and every time i think i have time its raining
You people with your busy schedule, things in your life and 24" subwoofers always have excuses

When ever you get a chance that would be great, thanks.
chrapladm is online now  
post #393 of 850 Old 07-20-2014, 02:14 PM
AVS Addicted Member
 
noah katz's Avatar
 
Join Date: Apr 1999
Location: Mountain View, CA USA
Posts: 20,792
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 411 Post(s)
Liked: 183
Quote:
Originally Posted by Erich H View Post
It's the 8". The compression driver is built into the back and shares the magnet with the woofer. It does test better than the B&C and FaitalPro.
I imagine you mean freq resp.

It would be interesting to see the polars, which for the B&C's aren't half bad and I believe part of the reason Danley uses them.
RickD1225 likes this.

Noah
noah katz is offline  
post #394 of 850 Old 07-20-2014, 03:49 PM
Advanced Member
 
mtg90's Avatar
 
Join Date: Aug 2011
Location: Millbrook, IL
Posts: 922
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 82 Post(s)
Liked: 245
Here is the off axis response of the 8" model (1/6th oct smoothing), the crossover is not done yet but it's close.
Also attached one at 10 degrees with 1/24th smoothing, you can see phase is not too bad either.
Attached Thumbnails
Click image for larger version

Name:	0-90 degrees off axis.png
Views:	124
Size:	76.0 KB
ID:	172170   Click image for larger version

Name:	10 degrees fr+phase.png
Views:	734
Size:	37.0 KB
ID:	172186  
mtg90 is offline  
post #395 of 850 Old 07-20-2014, 04:34 PM
Senior Member
 
Nate Hansen's Avatar
 
Join Date: Aug 2012
Location: Rochester, MN
Posts: 228
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 62 Post(s)
Liked: 53
How consistent are the polars with a higher resolution plot? That 1/6 smoothed set looks really good for a coax. Thanks for posting that I don't think I've ever seen a full set of polars for a coax like that.

Does anyone have any for the volt models?
Nate Hansen is offline  
post #396 of 850 Old 07-20-2014, 08:28 PM
AVS Addicted Member
 
noah katz's Avatar
 
Join Date: Apr 1999
Location: Mountain View, CA USA
Posts: 20,792
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 411 Post(s)
Liked: 183
Thanks, pretty nice!

Do you have polars for an 8" B&C?

Quote:
Originally Posted by mtg90 View Post
Here is the off axis response of the 8" model (1/6th oct smoothing), the crossover is not done yet but it's close.
Also attached one at 10 degrees with 1/24th smoothing, you can see phase is not too bad either.

Noah
noah katz is offline  
post #397 of 850 Old 07-21-2014, 06:57 AM
AVS Special Member
 
NicksHitachi's Avatar
 
Join Date: Jul 2007
Location: Wilmington, NC
Posts: 3,741
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 148 Post(s)
Liked: 167
That looks pretty nice..... Whats going on at 700Hz? Is that noticeable to your ears? Too low to be breakup right? Maybe some resonance on speaker or enclosure?

NicksHitachi is online now  
post #398 of 850 Old 07-22-2014, 02:22 AM
AVS Special Member
 
chalugadp's Avatar
 
Join Date: Jan 2013
Location: Vancouver, BC, Canada
Posts: 5,675
Mentioned: 24 Post(s)
Tagged: 1 Thread(s)
Quoted: 1243 Post(s)
Liked: 1177
So this model

Appears to be this one
https://www.parts-express.com/faital...-ohm--294-1192
Driver is $215 so full kit in the 260-280 range I'm guessing. Looks like it would fit in a small box too. Perfect for what I want. Would make a great addition to your lineup
chalugadp is offline  
post #399 of 850 Old 07-22-2014, 06:08 AM
AVS Special Member
 
Sibuna's Avatar
 
Join Date: Apr 2010
Location: Western NY
Posts: 2,261
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 281 Post(s)
Liked: 347
yea that little guy looks like it would be perfect for a set of computer speakers in a small space
Sibuna is online now  
post #400 of 850 Old 07-22-2014, 06:10 AM - Thread Starter
AVS Special Member
 
Erich H's Avatar
 
Join Date: Dec 2007
Location: Cincinnati OH
Posts: 5,580
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
Quoted: 463 Post(s)
Liked: 744
There's a design already done with the FaitalPro 6" coaxial, but that's not the one used in that small box.
Erich H is offline  
post #401 of 850 Old 07-27-2014, 09:46 PM
Senior Member
 
dragonleepenn's Avatar
 
Join Date: Sep 2006
Posts: 481
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Liked: 32
Can't wait to see one,hope the dimensions are for a sealed box.







PeterV
dragonleepenn is online now  
post #402 of 850 Old 07-28-2014, 05:08 PM
Senior Member
 
dragonleepenn's Avatar
 
Join Date: Sep 2006
Posts: 481
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Liked: 32
Quote:
Originally Posted by chalugadp View Post
So this model

Appears to be this one
https://www.parts-express.com/faital...-ohm--294-1192
Driver is $215 so full kit in the 260-280 range I'm guessing. Looks like it would fit in a small box too. Perfect for what I want. Would make a great addition to your lineup
This is the one I need as far as size I want 4, what driver and cd is it?
What is the size of this box?
Thanks



PeterV
dragonleepenn is online now  
post #403 of 850 Old 07-28-2014, 05:44 PM - Thread Starter
AVS Special Member
 
Erich H's Avatar
 
Join Date: Dec 2007
Location: Cincinnati OH
Posts: 5,580
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
Quoted: 463 Post(s)
Liked: 744
We need to come up with a box design that works for Atmos, then we can adjust dimensions. Angled, square, wide but shallow, etc. The box size in the picture you posted is something like 8" wide, 10.5" tall and around 7 or 7.5" deep.
Maklar and pgwalsh like this.
Erich H is offline  
post #404 of 850 Old 07-28-2014, 06:01 PM
Senior Member
 
dragonleepenn's Avatar
 
Join Date: Sep 2006
Posts: 481
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Liked: 32
Quote:
Originally Posted by Erich H View Post
We need to come up with a box design that works for Atmos, then we can adjust dimensions. Angled, square, wide but shallow, etc. The box size in the picture you posted is something like 8" wide, 10.5" tall and around 7 or 7.5" deep.
That's what i was thinking to use these for atmos, why not .
Also what coaxial is that in the picture, who makes it.
Thanks



PeterV
dragonleepenn is online now  
post #405 of 850 Old 08-03-2014, 04:39 PM - Thread Starter
AVS Special Member
 
Erich H's Avatar
 
Join Date: Dec 2007
Location: Cincinnati OH
Posts: 5,580
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
Quoted: 463 Post(s)
Liked: 744
High end coaxials need high end enclosures. Here's some experimenting:

8" model:







I do have some other experimental stuff, but haven't taken pictures of that yet.
Attached Thumbnails
Click image for larger version

Name:	8inch_Corian2.jpg
Views:	581
Size:	51.5 KB
ID:	195169   Click image for larger version

Name:	8inch_Corian.jpg
Views:	580
Size:	52.6 KB
ID:	195177  
popalock and mtg90 like this.

Last edited by Erich H; 08-03-2014 at 04:44 PM.
Erich H is offline  
post #406 of 850 Old 08-03-2014, 04:40 PM - Thread Starter
AVS Special Member
 
Erich H's Avatar
 
Join Date: Dec 2007
Location: Cincinnati OH
Posts: 5,580
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
Quoted: 463 Post(s)
Liked: 744
6" model: Not sure I like the non circular frame as much as the 8" model.





This one is sort of like a marble style material and getting a good photo of it is not very easy for me. It looks much better in person.




Back side:

Attached Thumbnails
Click image for larger version

Name:	6inch_Corian3.jpg
Views:	580
Size:	53.2 KB
ID:	195193   Click image for larger version

Name:	6inch_Corian2.jpg
Views:	578
Size:	64.1 KB
ID:	195201   Click image for larger version

Name:	6inch_Corian.jpg
Views:	580
Size:	77.6 KB
ID:	195209  
mtg90 likes this.

Last edited by Erich H; 08-03-2014 at 04:44 PM.
Erich H is offline  
post #407 of 850 Old 08-03-2014, 05:58 PM
AVS Special Member
 
jbrown15's Avatar
 
Join Date: Nov 2005
Location: Vancouver B.C.
Posts: 6,667
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 1297 Post(s)
Liked: 1220
I pray to baby Jesus that you're going to offer both of those sizes in the ported slanted box style for these high end coax's.
jbrown15 is online now  
post #408 of 850 Old 08-03-2014, 06:09 PM
AVS Special Member
 
chrapladm's Avatar
 
Join Date: Mar 2010
Posts: 2,975
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 254 Post(s)
Liked: 103
I am not much of a fan of the non-circular frames myself. That being said if it performs then I could look past that.
chrapladm is online now  
post #409 of 850 Old 08-03-2014, 06:49 PM - Thread Starter
AVS Special Member
 
Erich H's Avatar
 
Join Date: Dec 2007
Location: Cincinnati OH
Posts: 5,580
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
Quoted: 463 Post(s)
Liked: 744
My problem is a speaker grill. Seems kind of stupid to cover up such a nice looking baffle! But I can't seem to think of anything right now.

Jbrown15, these actually get down to around 80hz in sealed boxes, so no need for porting. They can even be run full range for music in a tower speaker!

I can't recall the exact internal volume on the 8" model, but I think it was about .5cuft. Not very big, but in Corian, it weighs around 30lbs! Obviously that wouldn't make much sense for an angled surround sound box.

People that have heard these 8" type coaxials are always surprised at how much volume they can put out. So it seems to me these would make for the perfect 'sleeper' system in a nice living room where you wouldn't want huge speakers. Small, nice looking with a high WAF, and louder than most would ever need.

The more I looked at the boxes, the more I was wondering about getting them made up, but still being a DIY speaker kit that came with an assembled box as well.
Erich H is offline  
post #410 of 850 Old 08-03-2014, 07:07 PM
Senior Member
 
mmarki's Avatar
 
Join Date: Dec 2006
Location: SW Burbs of Chicago
Posts: 479
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 7 Post(s)
Liked: 23
I'm happy to see some progress with these. I'm really interested in the 6" for surrounds and I'm hoping they can be used in a low profile/slanted box. Unfortunately the wife doesn't want "big speakers hanging on the wall."
chalugadp likes this.
mmarki is online now  
post #411 of 850 Old 08-03-2014, 07:47 PM
AVS Special Member
 
jbrown15's Avatar
 
Join Date: Nov 2005
Location: Vancouver B.C.
Posts: 6,667
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 1297 Post(s)
Liked: 1220
Quote:
Originally Posted by Erich H View Post
My problem is a speaker grill. Seems kind of stupid to cover up such a nice looking baffle! But I can't seem to think of anything right now.

Jbrown15, these actually get down to around 80hz in sealed boxes, so no need for porting. They can even be run full range for music in a tower speaker!

I can't recall the exact internal volume on the 8" model, but I think it was about .5cuft. Not very big, but in Corian, it weighs around 30lbs! Obviously that wouldn't make much sense for an angled surround sound box.

People that have heard these 8" type coaxials are always surprised at how much volume they can put out. So it seems to me these would make for the perfect 'sleeper' system in a nice living room where you wouldn't want huge speakers. Small, nice looking with a high WAF, and louder than most would ever need.

The more I looked at the boxes, the more I was wondering about getting them made up, but still being a DIY speaker kit that came with an assembled box as well.
What about the smaller one? How low can they play? My room is smaller so I'm more interested in a slanted style box for the 6" to use as surrounds. Those ones really have my attention!
jbrown15 is online now  
post #412 of 850 Old 08-03-2014, 07:50 PM
AVS Special Member
 
chalugadp's Avatar
 
Join Date: Jan 2013
Location: Vancouver, BC, Canada
Posts: 5,675
Mentioned: 24 Post(s)
Tagged: 1 Thread(s)
Quoted: 1243 Post(s)
Liked: 1177
Quote:
Originally Posted by jbrown15 View Post
What about the smaller one? How low can they play? My room is smaller so I'm more interested in a slanted style box for the 6" to use as surrounds. Those ones really have my attention!
Yeah me and Joe don't listen at +10 reference like the crazies here
chalugadp is offline  
post #413 of 850 Old 08-03-2014, 08:20 PM
AVS Special Member
 
NWCgrad's Avatar
 
Join Date: Feb 2010
Location: Frederick, MD
Posts: 1,159
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 225 Post(s)
Liked: 178
Quote:
Originally Posted by chalugadp View Post
Yeah me and Joe don't listen at +10 reference like the crazies here
How about +18 like at Andrew's yesterday? All I can say is it was fantastic, but it will be years before my system is up to the challenge due to living in a townhouse (I think the police would be involved).


Looking forward to more of the 8" coaxial designs, I am in need of new surrounds in the next few months.

Current Gear: PJ – BenQ PE7700; Receiver - Onkyo TX-SR805; Blu Ray - OppoBDP 103; Turntable - Dual CS-515 w/ Ortofon Super OM10; Amplifiers - OdysseyKhartago, Adcom GFA555, QSC RMX 1850HD; PEQ - Behringer FBD2496 [Near FieldSub], miniDSP 2×4 [Flanking Subs], REW; Speakers - 4 Pi (w/B&C DE250/JBL2226H) × 3 [LCR], Yamaha Crap × 2 [surrounds], Exodus Audio Maelstrom-X18" sealed sub [near field sub], LAB-12 based ported sub tuned to 22 Hz x2 [flanking subs, XO set at 40 Hz]
NWCgrad is offline  
post #414 of 850 Old 08-03-2014, 10:50 PM
Senior Member
 
dragonleepenn's Avatar
 
Join Date: Sep 2006
Posts: 481
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Liked: 32
Hi Erich H,
What are the box dimensions for both the 6" and 8" coaxials. They look great.
Thanks




PeterV
dragonleepenn is online now  
post #415 of 850 Old 08-14-2014, 03:09 PM
Senior Member
 
rlhaudio's Avatar
 
Join Date: Jun 2010
Posts: 406
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 90 Post(s)
Liked: 26
So I am ready to build some DIY rear speakers. I know this thread directed on some new upcoming projects but been kida stagnant for a few. So I figured I would ask here rather that the Sound Group Forum. My front speakers are 100db QSC 2150 with my sides being 97db Q!SC 8101 which leaves me deciding which to use for my rears. My last from of seat will be on a riser approx. 4 feet from my rear wall. I was thinking of building the Volt 10 with the slanted box. @ at price of $338.00 for drivers and box. OR I could build the Fusion 6 for $240.00 that's a difference of $98.00. Im just curious what I am giving up my building the Fusion 6 for rears? I thought perhaps the horn driver in the fusion would help with the seating distance for rear speakers. However the Volts would match closer as they are 95db.
I will defer to your expert opinions to those who have already built these speakers as to your opinionated recommendations. I am not looking to save $100.00 at the loss of sound quality and then end up replacing them with the Volts anyway. I'll still be keeping an eye of this page for Atmos speakers IF I decide to go that route In the future. Once these are placed into my theater, Ill be adding Wide speakers next. I'll wait of the height speakers until I decide on Atmos unless I build Volt 10 in the flat box and use them in my ceiling. Still waiting to see what the scientists come up with at S.G.

QSC 2150 for HT
DIY Tempest
DIY Ultimax Sub's
rlhaudio is offline  
post #416 of 850 Old 08-15-2014, 07:37 AM
Advanced Member
 
Bassment's Avatar
 
Join Date: Aug 2013
Location: Ontario, Canada
Posts: 911
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 417 Post(s)
Liked: 166
for surrounds it's more about dispersion pattern than sound quality. Coaxials have a wide dispersion to cover lots of seats, horn's have controlled directivity. It depends on your speaker location/angle/seats but you will probably be better off with the volts.
Bassment is offline  
post #417 of 850 Old 08-15-2014, 07:53 AM
AVS Special Member
 
Sibuna's Avatar
 
Join Date: Apr 2010
Location: Western NY
Posts: 2,261
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 281 Post(s)
Liked: 347
I'm gonna try my hardest to get an outdoor vid of one of the 8s playing this weekend

Sent from my LG G3 using Tapatalk
Sibuna is online now  
post #418 of 850 Old 08-15-2014, 08:28 AM
AVS Special Member
 
chrapladm's Avatar
 
Join Date: Mar 2010
Posts: 2,975
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 254 Post(s)
Liked: 103
Quote:
Originally Posted by Sibuna View Post
I'm gonna try my hardest to get an outdoor vid of one of the 8s playing this weekend

Sent from my LG G3 using Tapatalk
That would be awesome.
chrapladm is online now  
post #419 of 850 Old 08-16-2014, 02:07 PM
AVS Special Member
 
Sibuna's Avatar
 
Join Date: Apr 2010
Location: Western NY
Posts: 2,261
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 281 Post(s)
Liked: 347
ok so first vid, be warned the mic on my camera is not amazing, + it picks up everything thats going on in the world. the crackling you hear at the end of the first vid and on the 2nd vid (not uploaded yet) is the camera mic being maxed out (it is NOT the speakers), you also hear the focus motor which makes a grinding sound.

Vids should give you an idea, of what these can do. remember not designed for outdoor PA use.

Source is my phone running a stereo to RCA adapter to a Yamaha RX-A3000 running the volume at 0 in Pure direct mode

fumoffu, Erich H and Gorilla83 like this.
Sibuna is online now  
post #420 of 850 Old 08-16-2014, 03:06 PM
AVS Special Member
 
Sibuna's Avatar
 
Join Date: Apr 2010
Location: Western NY
Posts: 2,261
Mentioned: 16 Post(s)
Tagged: 0 Thread(s)
Quoted: 281 Post(s)
Liked: 347
Quote:
Originally Posted by chrapladm View Post
That would be awesome.


2nd vid
you can hear my cameras mic getting maxed out in this when im close its not the speaker

Erich H likes this.

Last edited by Sibuna; 08-16-2014 at 03:16 PM.
Sibuna is online now  
Reply DIY Speakers and Subs



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