The Official ratm Q&A Thread - Page 2 - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 6Likes
Reply
 
Thread Tools
post #31 of 58 Old 11-28-2019, 06:59 AM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Damn these things are beasts. Packaging was super solid.
Attached Thumbnails
Click image for larger version

Name:	IMG_4651.jpg
Views:	13
Size:	174.4 KB
ID:	2646694   Click image for larger version

Name:	IMG_4652.jpg
Views:	18
Size:	133.2 KB
ID:	2646696   Click image for larger version

Name:	IMG_4653.jpg
Views:	19
Size:	121.9 KB
ID:	2646698   Click image for larger version

Name:	IMG_4654.jpg
Views:	15
Size:	108.8 KB
ID:	2646700   Click image for larger version

Name:	IMG_4655.jpg
Views:	18
Size:	106.8 KB
ID:	2646702  

Click image for larger version

Name:	IMG_4656.jpg
Views:	14
Size:	83.7 KB
ID:	2646704   Click image for larger version

Name:	IMG_4657.jpg
Views:	17
Size:	98.5 KB
ID:	2646706   Click image for larger version

Name:	IMG_4658.jpg
Views:	19
Size:	129.7 KB
ID:	2646708   Click image for larger version

Name:	IMG_4659.jpg
Views:	18
Size:	112.7 KB
ID:	2646710  

Last edited by ratm; 11-28-2019 at 07:19 AM.
ratm is offline  
Sponsored Links
Advertisement
 
post #32 of 58 Old 11-28-2019, 07:01 AM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Side note, does anyone know why my pics always load sideways?
ratm is offline  
post #33 of 58 Old 11-28-2019, 07:05 AM
Advanced Member
 
a77cj7's Avatar
 
Join Date: Aug 2019
Location: Sturgis, SD
Posts: 573
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 307 Post(s)
Liked: 240
Quote:
Originally Posted by ratm View Post
Side note, does anyone know why my pics always load sideways?

The forum always uses the widest side as the bottom. Take pics with phone sideways and it should work better.

Chris
a77cj7 is online now  
Sponsored Links
Advertisement
 
post #34 of 58 Old 11-28-2019, 07:08 AM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Quote:
Originally Posted by a77cj7 View Post
The forum always uses the widest side as the bottom. Take pics with phone sideways and it should work better.

Chris

Well thats stupid. And I already put them back in the boxes. My back hurts now.
ratm is offline  
post #35 of 58 Old 11-28-2019, 07:13 AM
Advanced Member
 
a77cj7's Avatar
 
Join Date: Aug 2019
Location: Sturgis, SD
Posts: 573
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 307 Post(s)
Liked: 240
Quote:
Originally Posted by ratm View Post
Well thats stupid. And I already put them back in the boxes. My back hurts now.

Ehh, can still see them fine with the pics sideways.

Nice looking woofers. I’m considering getting a pair now that I’ve discovered I can’t fit the HST’s.

Chris
a77cj7 is online now  
post #36 of 58 Old 11-28-2019, 07:20 AM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Quote:
Originally Posted by a77cj7 View Post
Ehh, can still see them fine with the pics sideways.

Nice looking woofers. I’m considering getting a pair now that I’ve discovered I can’t fit the HST’s.

Chris

Fixed. Squared up the pics using iPhoto. Sucks you can't fit the HST's. Is it the depth?
ratm is offline  
post #37 of 58 Old 11-28-2019, 07:24 AM
Advanced Member
 
a77cj7's Avatar
 
Join Date: Aug 2019
Location: Sturgis, SD
Posts: 573
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 307 Post(s)
Liked: 240
Quote:
Originally Posted by ratm View Post
Fixed. Squared up the pics using iPhoto. Sucks you can't fit the HST's. Is it the depth?

Yup, the new basket design made them too deep.

Looks like you’ll be ready to fire up pretty soon.

Chris
a77cj7 is online now  
post #38 of 58 Old 11-28-2019, 05:53 PM
AVS Forum Addicted Member
 
BassThatHz's Avatar
 
Join Date: Apr 2008
Location: Northern Okan range (NW Cascades region)
Posts: 10,932
Mentioned: 239 Post(s)
Tagged: 0 Thread(s)
Quoted: 3831 Post(s)
Liked: 4333
If I recall
The FI's had a lot of distortion on data-bass. The HST and UM 18's measured better.

Not sure if they have improved models since, or what.
BassThatHz is offline  
post #39 of 58 Old 11-28-2019, 06:32 PM
AVS Forum Special Member
 
zora's Avatar
 
Join Date: Nov 2003
Location: Walla Walla, WA
Posts: 1,064
Mentioned: 2 Post(s)
Tagged: 1 Thread(s)
Quoted: 104 Post(s)
Liked: 84
Can we get back to the RATM reunion?
zora is offline  
post #40 of 58 Old 11-29-2019, 06:44 AM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Quote:
Originally Posted by BassThatHz View Post
If I recall
The FI's had a lot of distortion on data-bass. The HST and UM 18's measured better.

Not sure if they have improved models since, or what.

I believe the version tested on DB was the previous model from 2015. Side note, is there a cliff notes version on how to read the impedance chart on DB or any other site?
ratm is offline  
post #41 of 58 Old 11-30-2019, 06:20 PM
AVS Forum Addicted Member
 
BassThatHz's Avatar
 
Join Date: Apr 2008
Location: Northern Okan range (NW Cascades region)
Posts: 10,932
Mentioned: 239 Post(s)
Tagged: 0 Thread(s)
Quoted: 3831 Post(s)
Liked: 4333
Quote:
Originally Posted by ratm View Post
I believe the version tested on DB was the previous model from 2015. Side note, is there a cliff notes version on how to read the impedance chart on DB or any other site?
Generally you will have a free-air resonance which will be close to the -3db rolloff point in an IB-type configuration, and the inductance rise into higher frequencies which relates to high frequency rolloff.

This is due to the fact that amplifiers are fixed voltage devices for a given sine sweep level (or 0dbFS input), and their wattage generally decreases into increasing ohms.

On a more important topic.
Joe Rogan kicks with some proper force. Your typical karate lunging front-kick.

All kicks should be like that. Easily cracking ribs and organ bleeding. Lethal...
(Knocking the air out of you at the very-least.)

Doesn't even really matter where it lands, no attempt at blocking it will work. (Which is intentional.)
None of these sissy kicks and punches you see elsewhere on the youtubes.

BassThatHz is offline  
post #42 of 58 Old 12-01-2019, 04:28 AM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Quote:
Originally Posted by BassThatHz View Post
Generally you will have a free-air resonance which will be close to the -3db rolloff point in an IB-type configuration, and the inductance rise into higher frequencies which relates to high frequency rolloff.

This is due to the fact that amplifiers are fixed voltage devices for a given sine sweep level (or 0dbFS input), and their wattage generally decreases into increasing ohms.

On a more important topic.
Joe Rogan kicks with some proper force. Your typical karate lunging front-kick.

All kicks should be like that. Easily cracking ribs and organ bleeding. Lethal...
(Knocking the air out of you at the very-least.)

Doesn't even really matter where it lands, no attempt at blocking it will work. (Which is intentional.)
None of these sissy kicks and punches you see elsewhere on the youtubes.

https://www.youtube.com/watch?v=f6zSG4vXbQY

Thats a great video. I've seen that before. And Joe Rogan continues to impress me with his overall knowledge of martial arts.
ratm is offline  
post #43 of 58 Old 12-04-2019, 04:03 AM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Still trying to find an answer or help with this:


https://www.avsforum.com/forum/155-d...nce-graph.html
ratm is offline  
post #44 of 58 Old 12-04-2019, 05:43 AM
AVS Forum Special Member
 
johnson636's Avatar
 
Join Date: Jan 2006
Location: Somewhere in the Outer Rim
Posts: 2,624
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 1315 Post(s)
Liked: 787
Quote:
Originally Posted by ratm View Post
Still trying to find an answer or help with this:


https://www.avsforum.com/forum/155-d...nce-graph.html
@Augerhandle responded to your question, but it seems to have been deleted for some reason Anyhow, the graph that you posted doesn't look like an impedance graph. That seems to be a Rear Port - Air Velocity graph.

Automation: Alexa- Harmony Hub- Wemo Dimmer Switch- Wemo Smart Plug BatCave: SY Triple Black
Video Image: JVC RS500- Sony UBP-800X- Chromecast- 125" wide 16x9 white over black spandex screen
Audio: 5.2.4 Marantz SR7011- (LCR) Stage Right 15" PA- (Surrounds) (4) BIC FH6-LCR- (Atmos) (4) Dayton Audio B652 6-1/2-Inch- (Subs)2 23ishcuft ported HS24s 14-15Hz tune- 4 PA460 in ported cabs 40Hz tune- FP20000Q- 2 Sanway FP10000Q- Crown XLS1500- . To be continued...
johnson636 is offline  
post #45 of 58 Old 12-04-2019, 06:20 AM - Thread Starter
AVS Forum Special Member
 
Augerhandle's Avatar
 
Join Date: Jan 2009
Location: About 25" away from my computer screen
Posts: 5,472
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 1329 Post(s)
Liked: 1299
I deleted because I had forgotten he was modeling sealed when I posted. Impedance varies with frequency, and each driver is peaking at a different frequency, which is related to the Fs of the speaker What is the Fs of each of the drivers?

"The wise understand by themselves; fools follow the reports of others"-Tibetan Proverb
_____________________ http://www.scientificamerican.com/article/auger-handle/ ________________________
Augerhandle is offline  
post #46 of 58 Old 12-04-2019, 02:14 PM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Quote:
Originally Posted by Augerhandle View Post
I deleted because I had forgotten he was modeling sealed when I posted. Impedance varies with frequency, and each driver is peaking at a different frequency, which is related to the Fs of the speaker What is the Fs of each of the drivers?

The Green is the HST-18 and the Fs is 14.8hz
The red is the Um18 and the Fs is 19.5 hz
The blue is the Fi Car and the Fs is 21.3 hz.
ratm is offline  
post #47 of 58 Old 12-04-2019, 02:25 PM
Advanced Member
 
a77cj7's Avatar
 
Join Date: Aug 2019
Location: Sturgis, SD
Posts: 573
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 307 Post(s)
Liked: 240
Quote:
Originally Posted by ratm View Post
The Green is the HST-18 and the Fs is 14.8hz
The red is the Um18 and the Fs is 19.5 hz
The blue is the Fi Car and the Fs is 21.3 hz.


Thats old data on the HST, they haven’t updated the website.

Here’s the mkIII specs.


Chris
a77cj7 is online now  
post #48 of 58 Old 12-04-2019, 02:28 PM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Quote:
Originally Posted by a77cj7 View Post
Thats old data on the HST, they haven’t updated the website.

Here’s the mkIII specs.


Chris
Oh cool. Thanks Chris. I will model again with the new Fs.
ratm is offline  
post #49 of 58 Old 12-04-2019, 02:47 PM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Here is an updated impedance graph with the parameters you gave me. Same color pattern, Green = HST, Red = UM18, Blue = Fi Car
Attached Thumbnails
Click image for larger version

Name:	Capture2.JPG
Views:	9
Size:	190.6 KB
ID:	2649394  
ratm is offline  
post #50 of 58 Old 12-06-2019, 07:51 PM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Sub #1 is complete and I am super thrilled with how it turned out. I love how the recessed baffle makes it flushed with the front. A couple of notes and notes about the pics.


- I used a product called Herculiner instead of duratex. A buddy of mine who I train with owns a body shop and that's what he had. Think of it as duratex on roids. Needed almost 2 1/2 gallons on it as the MDF soaked it up. But dang, you can drop this thing from a truck and it would be unscathed. This stuff is thick.
- Because of the thickness, I had to sand the edge of the outer baffle a bit so the driver would fit. I have to work more on box number 2 and might have to use my dremel so it fits.

- These things are going to tip the scales about 160 pounds.

- I did not use any stuffing. Pretty much on the advice of Fi Car and John (LTD02 who designed my boxes) who said it wouldn't matter whether I used stuffing for my application. #subjectmatterexperts
- The feet I used were are great and a perfect size for my cabs. I had to use a washer so the screws would secure it.
- I siliconed the neutrik connection on the inside and also where I drilled through for the feet.

- The 1 1/2 inch #8 screws from P.E work great. I predrilled them and then hand screwed them.

- There is some cardboard paper that was stuck to the bottom of the box when it dried. It's on the bottom and you'll never see it so I dont care.



I cant wait to get box 2 done and dialed in.
Attached Thumbnails
Click image for larger version

Name:	image2.jpg
Views:	12
Size:	126.6 KB
ID:	2650492   Click image for larger version

Name:	image2[1].jpg
Views:	9
Size:	91.2 KB
ID:	2650494   Click image for larger version

Name:	image3.jpg
Views:	7
Size:	103.4 KB
ID:	2650496   Click image for larger version

Name:	image0.jpg
Views:	6
Size:	135.6 KB
ID:	2650498   Click image for larger version

Name:	image1.jpg
Views:	6
Size:	117.2 KB
ID:	2650500  

Click image for larger version

Name:	image0[2].jpg
Views:	8
Size:	172.8 KB
ID:	2650502   Click image for larger version

Name:	image2[2].jpg
Views:	9
Size:	206.5 KB
ID:	2650504   Click image for larger version

Name:	image0[1].jpg
Views:	8
Size:	66.8 KB
ID:	2650506   Click image for larger version

Name:	image1[2].jpg
Views:	7
Size:	201.0 KB
ID:	2650508   Click image for larger version

Name:	image1[1].jpg
Views:	8
Size:	80.9 KB
ID:	2650510  

a77cj7 likes this.
ratm is offline  
post #51 of 58 Old Yesterday, 07:51 AM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
So I brought one home and hooked it up. ONE is just amazing. Totally different sound than the JTR, but I love it. I am not going to bother with any DSP settings or REW until I get the second built and home. I do have a couple of basic questions so far:


1. I've set up the Nx6000d as this: Dual Mono > input A > output A > Sub. Is there any difference between "stereo" mode and Dual Mono?


2. I have the gain on the front of the amp set to max. I've played a variety of music and movies, and I have yet to work the amp harder than 2 lights on the front. is this normal?


3. I have my speakers set to small, crossed over at 80hz (surrounds at 120hz), Subwoofer mode LFE+main, LPF for LFE at 120hz. Does this seem correct?


All in all, I am super happy with my build so far.
ratm is offline  
post #52 of 58 Old Yesterday, 08:07 AM
AVS Forum Special Member
 
smcmillan2's Avatar
 
Join Date: Jan 2012
Location: Farmington, MI, USA
Posts: 2,233
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 987 Post(s)
Liked: 834
I personally do not use double bass (LFE+main) but if it sounds better to you that way, go for it.

Sub builds: Yet another Infinity 1260 build | Twins! | Modified V.B.S.S. build | UM12-22 builds | AV stand and sealed UM18s

Speaker builds: DIYSG HTM-10 build | DIYSG Volt-6 build | DIYSG Fusion-8 builds
smcmillan2 is offline  
post #53 of 58 Old Yesterday, 08:13 AM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Quote:
Originally Posted by smcmillan2 View Post
I personally do not use double bass (LFE+main) but if it sounds better to you that way, go for it.

What do you mean "double bass"? You set yours to only LFE? Oh and how to my other settings look so far?
ratm is offline  
post #54 of 58 Old Yesterday, 02:20 PM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Wifey - "i'm glad you built two. One by itself looks stupid."


Me -
asarose247 likes this.
ratm is offline  
post #55 of 58 Old Yesterday, 04:12 PM
AVS Forum Special Member
 
smcmillan2's Avatar
 
Join Date: Jan 2012
Location: Farmington, MI, USA
Posts: 2,233
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 987 Post(s)
Liked: 834
Quote:
Originally Posted by ratm View Post
What do you mean "double bass"? You set yours to only LFE? Oh and how to my other settings look so far?
Double bass is LFE to your mains as well as your subwoofers. I don't care for it.

I see no problems with your other settings.

Sub builds: Yet another Infinity 1260 build | Twins! | Modified V.B.S.S. build | UM12-22 builds | AV stand and sealed UM18s

Speaker builds: DIYSG HTM-10 build | DIYSG Volt-6 build | DIYSG Fusion-8 builds
smcmillan2 is offline  
post #56 of 58 Old Yesterday, 04:43 PM - Thread Starter
AVS Forum Special Member
 
Augerhandle's Avatar
 
Join Date: Jan 2009
Location: About 25" away from my computer screen
Posts: 5,472
Mentioned: 34 Post(s)
Tagged: 0 Thread(s)
Quoted: 1329 Post(s)
Liked: 1299
Nice job. What is your subwoofer trim in the AVR set to?

"The wise understand by themselves; fools follow the reports of others"-Tibetan Proverb
_____________________ http://www.scientificamerican.com/article/auger-handle/ ________________________
Augerhandle is offline  
post #57 of 58 Old Yesterday, 05:24 PM
AVS Forum Special Member
 
ratm's Avatar
 
Join Date: Sep 2006
Location: South Florida
Posts: 1,998
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quoted: 256 Post(s)
Liked: 107
Quote:
Originally Posted by Augerhandle View Post
Nice job. What is your subwoofer trim in the AVR set to?

Right now, zero. Once I get #2 finished and home, my plan is to run REW, adjust the DSP settings as needed and maybe run audyssey.
ratm is offline  
post #58 of 58 Old Yesterday, 05:40 PM
AVS Forum Special Member
 
Samps's Avatar
 
Join Date: Feb 2014
Location: Pittsburgh, PA
Posts: 2,753
Mentioned: 51 Post(s)
Tagged: 0 Thread(s)
Quoted: 1234 Post(s)
Liked: 906
I don’t think double bass or life+mains is active when the speakers are set to small. You have to use large to get the double bass. When set to small the life+mains setting is bypassed.
Samps is offline  
Sponsored Links
Advertisement
 
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