My HSU subwoofer has met its match.. damage done? - AVS Forum | Home Theater Discussions And Reviews
Baselworld is only a few weeks away. Getting the latest news is easy, Click Here for info on how to join the Watchuseek.com newsletter list. Follow our team for updates featuring event coverage, new product unveilings, watch industry news & more!



Forum Jump: 
 
Thread Tools
post #1 of 5 Old 08-22-2012, 09:19 PM - Thread Starter
Member
 
intoflatlines's Avatar
 
Join Date: Aug 2007
Posts: 69
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I was watching The Hunger Games on BD tonight. During one of the first scenes when the main character is in the forest and an aircraft flies overhead, my HSU VTF-3 MK3 with Turbo started making a sort of metallic banging/pinging sound.. which is what I remember bottoming out described like. I turned the volume down some, and the sub seemingly performed fine for the rest of the film. How can I check to see what damage was done?
intoflatlines is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 08-22-2012, 09:39 PM
 
shadyJ's Avatar
 
Join Date: May 2009
Posts: 8,786
Mentioned: 28 Post(s)
Tagged: 0 Thread(s)
Quoted: 1330 Post(s)
Liked: 1348
Bottoming out the driver can cause damage but that doesn't mean it necessarily will. Run some sine wave test tones on it, like 30 hz, 40 hz, 50 hz, if you don't hear anything strange it is probably ok. Your subwoofer is probably fine, you just don't want that to bottom it out a lot. Bottoming out is when the voice coil hits the rear plate, and if it hits the rear plate enough, it can hammer it out of shape, and then your driver is ruined. By the way, don't run the sine wave test tones at loud levels for prolonged periods of time, sine waves are hard on drivers, it will heat up your sub in a hurry.
shadyJ is offline  
post #3 of 5 Old 08-22-2012, 10:42 PM
AVS Special Member
 
drewTT's Avatar
 
Join Date: Nov 2007
Location: Orange County
Posts: 2,436
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 458 Post(s)
Liked: 487
That's odd. How high did you have it? I listened to that same scene at -15 master volume and +0 sub level and it wasn't anything too special.

LG OLED65E6 | Marantz AV8802A | Marantz MM8077 | PS Audio PerfectWave P3 | B&W CM9 | B&W CM5 | Dual JL Audio Fathom f112
Maingear Drift Z170 GTX 1080 HTPC | BDI Mirage 8227 | Synology DS916+ | TEAC UD-503 | Focal Solo6 Be | Vizio P50-C1
drewTT is offline  
post #4 of 5 Old 08-22-2012, 10:53 PM
AVS Special Member
 
Spanglo's Avatar
 
Join Date: Jun 2007
Location: San Diego
Posts: 2,248
Mentioned: 19 Post(s)
Tagged: 0 Thread(s)
Quoted: 485 Post(s)
Liked: 422
Yeah that scene really rumbled. drewTT run your sub a little hotter you're missing out man.

 


PSN - Hapi_Kilmore_v3
My 6.4.4 Living Room HT
Spanglo is offline  
post #5 of 5 Old 08-23-2012, 08:55 AM - Thread Starter
Member
 
intoflatlines's Avatar
 
Join Date: Aug 2007
Posts: 69
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by shadyJ View Post

Bottoming out the driver can cause damage but that doesn't mean it necessarily will. Run some sine wave test tones on it, like 30 hz, 40 hz, 50 hz, if you don't hear anything strange it is probably ok. Your subwoofer is probably fine, you just don't want that to bottom it out a lot. Bottoming out is when the voice coil hits the rear plate, and if it hits the rear plate enough, it can hammer it out of shape, and then your driver is ruined. By the way, don't run the sine wave test tones at loud levels for prolonged periods of time, sine waves are hard on drivers, it will heat up your sub in a hurry.
Thanks!

Quote:
Originally Posted by drewTT View Post

That's odd. How high did you have it? I listened to that same scene at -15 master volume and +0 sub level and it wasn't anything too special.
I had at it at -9dB master, not sure about my sub level though.. I'll check when I get home. I've watched other bassy movies (e.g., Cloverfield, Live Free Or Die Hard, Tron: Legacy, Star Wars II: AOTC, etc.) at the same level or higher, but maybe The Hunger Games had more low bass than others? I backed it down to -13dB master for the rest of the film after the bottoming out, and the sub performed very well

Quote:
Originally Posted by Spanglo View Post

Yeah that scene really rumbled. drewTT run your sub a little hotter you're missing out man.
Yeah, I'm surprised when I hear some people say that The Hunger Games doesn't have much bass.. The aircraft scenes and the forest fire scene might be up there in my top 3 (if not number 1) bassy scenes I've watched..
intoflatlines is offline  
Sponsored Links
Advertisement
 
Reply Subwoofers, Bass, and Transducers

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