Did I blow my Studio 590 Speaker(s)? - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 3Likes
  • 2 Post By Molon_Labe
  • 1 Post By Molon_Labe
 
Thread Tools
post #1 of 28 Old 01-13-2020, 12:28 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
Did I blow my Studio 590 Speaker(s)?

A few days back I played music via Bluetooth from my phone. I did not realize that the application defaulted to full volume. I seem to have heard some kind of crackling from the speakers and I immediatedly turned down the volume. Now I'm paranoid that I've blown something. I'm running a Denon 4400h receiver, using three JBL Studio 590s for LCR, two 580s for surrounds, two MLT2s for my rear surrounds and Klipsch R112SW for my subwoofer. I don't hear any "mechanical" crackling that would signify woofer separation/damage, but I can't tell whether I've suddenly lost some range since something feels different but I am unable to ascertain. When I play music and stand next to the speakers I hear all of them playing. I just don't know if I am supposed to be hearing more. Is there some way or method that I can test whether I've lost frequency range and/or damaged the tweeters?

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html

Last edited by genaccmiller; 01-13-2020 at 12:35 PM.
genaccmiller is offline  
Sponsored Links
Advertisement
 
post #2 of 28 Old 01-13-2020, 12:50 PM
Member
 
Figit090's Avatar
 
Join Date: Apr 2011
Posts: 71
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 30 Post(s)
Liked: 36
Edit: freq sweeps can be damaging, I didn't describe that well.

You could play a frequency sweep at very low volume and check each channel independently. That will at least tell you if you have any differences in response.


Sent from my Moto G (5S) Plus using Tapatalk

Last edited by Figit090; 01-13-2020 at 02:07 PM.
Figit090 is offline  
post #3 of 28 Old 01-13-2020, 12:51 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
Quote:
Originally Posted by Figit090 View Post
You could play a frequency sweep at moderate/high (reasonable but not above normal listening loud) volume and check each channel independently. That will at least tell you if you have damaged one speaker worse than the other.

Then use stereo and listen for any differences.





Sent from my Moto G (5S) Plus using Tapatalk
Can you elaborate how to do this? The frequency sweep from what I have read seems a dangerous option.

Sent from my GM1917 using Tapatalk

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html
genaccmiller is offline  
Sponsored Links
Advertisement
 
post #4 of 28 Old 01-13-2020, 01:04 PM
Member
 
Figit090's Avatar
 
Join Date: Apr 2011
Posts: 71
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 30 Post(s)
Liked: 36
Quote:
Originally Posted by genaccmiller View Post
Can you elaborate how to do this? The frequency sweep from what I have read seems a dangerous option.

Sent from my GM1917 using Tapatalk
You're right, I was misinformed! I'll edit that.

Sent from my Moto G (5S) Plus using Tapatalk
Figit090 is offline  
post #5 of 28 Old 01-13-2020, 01:19 PM
Member
 
Figit090's Avatar
 
Join Date: Apr 2011
Posts: 71
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 30 Post(s)
Liked: 36
FYI some speaker calibration plays a sweep, you could activate that and listen to each speaker.




Sent from my Moto G (5S) Plus using Tapatalk
Figit090 is offline  
post #6 of 28 Old 01-13-2020, 01:21 PM
AVS Forum Special Member
 
Elihawk's Avatar
 
Join Date: Jan 2011
Location: Iowa City, Iowa
Posts: 6,146
Mentioned: 30 Post(s)
Tagged: 2 Thread(s)
Quoted: 1978 Post(s)
Liked: 2139
A freq sweep at low volume to normal listening volume should not damage anything...(now, if your normal listen volume is 90dB plus, then you should see an a doctor who specializes in hearing loss and you should not run a freq sweep at this level!)

Set up #1: EMP e5Ti, e5Ci, and EMP e5Bi surrounds, Outlaw LFM1 Plus sub, SVS NSD SB12 sub, Marantz Slimeline 1504 AV receiver
Set up #2: Def Tech SM450, CLR2002, SLS Qline surrounds and EMPtek10i10i sub, Denon 1910 AV receiver
Set up #3: Philharmonics- BMR in a 2.0 system, music only, Yamaha RXV-363 AV receiver
Elihawk is online now  
post #7 of 28 Old 01-13-2020, 01:22 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
Quote:
Originally Posted by Elihawk View Post
A freq sweep at low volume to normal listening volume should not damage anything...(now, if your normal listen volume is 90dB plus, then you should see an a doctor who specializes in hearing loss and you should not run a freq sweep at this level!)
Can you help me understand how to run this?

Sent from my GM1917 using Tapatalk

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html
genaccmiller is offline  
post #8 of 28 Old 01-13-2020, 01:26 PM
Member
 
Figit090's Avatar
 
Join Date: Apr 2011
Posts: 71
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 30 Post(s)
Liked: 36
Quote:
Originally Posted by genaccmiller View Post
Can you help me understand how to run this?

Sent from my GM1917 using Tapatalk
Do you have the audessy mic that came with your reciever and the user manual?

Sent from my Moto G (5S) Plus using Tapatalk
Figit090 is offline  
post #9 of 28 Old 01-13-2020, 01:48 PM
AVS Forum Special Member
 
torii's Avatar
 
Join Date: Mar 2015
Posts: 7,589
Mentioned: 62 Post(s)
Tagged: 0 Thread(s)
Quoted: 3806 Post(s)
Liked: 2171
lots of sound clips and tests and good reading here...https://www.audiocheck.net/audiotests_ledr.php

Power: Marantz sr7008, NAD C 275Bee x 2, Video: Oppo 103, Samsung 75un6300 LG oled c9 77
Speakers: Focal aria 948, Focal cc900, Klipsch synergy KSF 10.5, Magnepan LRS, Audioengine A2+
Subs: Rythmik FV25HP, Rythmik FV15HP, Velodyne HGS 12, Velodyne VA1512
torii is online now  
post #10 of 28 Old 01-13-2020, 02:00 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
Quote:
Originally Posted by Figit090 View Post
Do you have the audessy mic that came with your reciever and the user manual?

Sent from my Moto G (5S) Plus using Tapatalk
Yes

Sent from my GM1917 using Tapatalk

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html
genaccmiller is offline  
post #11 of 28 Old 01-13-2020, 02:01 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
I also just talked to JBL. My Denon can produce 125 watts at 8 ohms. The speaker can do 250 watts at 6 ohms. So they are saying in any case even at full volume the Denon would not have gone over the capacity of the speaker. So they doubt if any damage could have been done. They do not know of any independent test to validate which came as a surprise to me. They are recommending however that it is better to power match the speaker to receiver and my receiver could be underpowered and could damage the speaker in the long run. I just shelled out quite some money for the receiver and am not looking to replace. If someone could walk me through how to test my speakers to ensure there is no damage I would be very grateful for the same.

Sent from my GM1917 using Tapatalk

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html
genaccmiller is offline  
post #12 of 28 Old 01-13-2020, 02:04 PM
AVS Forum Special Member
 
Molon_Labe's Avatar
 
Join Date: Jun 2015
Location: Texas
Posts: 2,368
Mentioned: 109 Post(s)
Tagged: 0 Thread(s)
Quoted: 3546 Post(s)
Liked: 4296
If it were me, I would put you in timeout for at least an hour in the corner.
SinGA and 4fit? like this.
Molon_Labe is online now  
post #13 of 28 Old 01-13-2020, 02:06 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
Quote:
Originally Posted by Molon_Labe View Post
If it were me, I would put you in timeout for at least an hour in the corner.
Sorry I don't follow. What is the need to get so nasty? Something about my issue looks like a joke to you?

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html
genaccmiller is offline  
post #14 of 28 Old 01-13-2020, 02:06 PM
Member
 
Figit090's Avatar
 
Join Date: Apr 2011
Posts: 71
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 30 Post(s)
Liked: 36
Yes can under-drive speakers, they can lose control at high volume if they don't have sufficient power. This causes distorted sound because of mechanical impact of the cone on the back of the magnet/basket. Prolonged high volume exposure to low power can physically damage a driver.

Prolonged exposure to TOO MUCH power will electrically damage a speaker, also.

Get your manual and your audessy mic and do some audio sweep tests with the calibration tool and listen for a speaker that sounds bad. You can rest assured that the built in audio test is safe... Then you can also use the resources linked above.

You'll probably hear a high pitch "whoop whoop whoop" from each channel as the test runs it's course


Sent from my Moto G (5S) Plus using Tapatalk
Figit090 is offline  
post #15 of 28 Old 01-13-2020, 02:09 PM
AVS Forum Special Member
 
Molon_Labe's Avatar
 
Join Date: Jun 2015
Location: Texas
Posts: 2,368
Mentioned: 109 Post(s)
Tagged: 0 Thread(s)
Quoted: 3546 Post(s)
Liked: 4296
Quote:
Originally Posted by genaccmiller View Post
Sorry I don't follow. What is the need to get so nasty? Something about my issue looks like a joke to you?
I was trying to make light of an almost costly error. Since you didn't have damage I took liberty at humor. It was not intended to be nasty - apologies.
Molon_Labe is online now  
post #16 of 28 Old 01-13-2020, 02:11 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
Quote:
Originally Posted by Molon_Labe View Post
I was trying to make light of an almost costly error. Since you didn't have damage I took liberty at humor. It was not intended to be nasty - apologies.
No worries. Sometimes while posting we don't usually have the opportunity to interact face to face and could lead to mis-perception (this case). In any case, I would certainly like to ascertain there is no damage. hence the request for help / instructions to conclusively rule out things. If you have any suggestions I would appreciate that as well.

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html
genaccmiller is offline  
post #17 of 28 Old 01-13-2020, 02:14 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
Quote:
Originally Posted by Figit090 View Post
Yes can under-drive speakers, they can lose control at high volume if they don't have sufficient power. This causes distorted sound because of mechanical impact of the cone on the back of the magnet/basket. Prolonged high volume exposure to low power can physically damage a driver.

Prolonged exposure to TOO MUCH power will electrically damage a speaker, also.

Get your manual and your audessy mic and do some audio sweep tests with the calibration tool and listen for a speaker that sounds bad. You can rest assured that the built in audio test is safe... Then you can also use the resources linked above.

You'll probably hear a high pitch "whoop whoop whoop" from each channel as the test runs it's course



Sent from my Moto G (5S) Plus using Tapatalk
Yes I have run Audyssey calibration multiple times and am very familiar with the whoop whoop whoop sound. Unfortunately, the mic does not let you do a test for sweep test, it only outputs what Audyssey uses to test.

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html
genaccmiller is offline  
post #18 of 28 Old 01-13-2020, 02:22 PM
AVS Forum Special Member
 
Molon_Labe's Avatar
 
Join Date: Jun 2015
Location: Texas
Posts: 2,368
Mentioned: 109 Post(s)
Tagged: 0 Thread(s)
Quoted: 3546 Post(s)
Liked: 4296
Quote:
Originally Posted by genaccmiller View Post
No worries. Sometimes while posting we don't usually have the opportunity to interact face to face and could lead to mis-perception (this case). In any case, I would certainly like to ascertain there is no damage. hence the request for help / instructions to conclusively rule out things. If you have any suggestions I would appreciate that as well.
I would suspect your receiver would clip prior to the driver getting fried. Amp clipping can sound very nasty. If the compression driver is damaged, you will hear it immediately. I am certain your mind is playing tricks on you. As other mentioned, do some sweeps (low volume) and it will reveal any issues. I have had some nasty, very loud pops on some 4" JBL compression drivers and there was no damage. I am also a prior owner of a handful of 580s and 590s. They are robust speakers and can handle significant power.
SinGA likes this.
Molon_Labe is online now  
post #19 of 28 Old 01-13-2020, 02:23 PM
Senior Member
 
DMark1's Avatar
 
Join Date: Mar 2009
Location: Lancaster, PA
Posts: 442
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Liked: 21
I would play some music at a normal volume level through all speakers. Go around and lean down and cup your hands around the tweeter so you can listen to just the tweeter. Compare all speakers to the one in question to see if you hear any difference.

If you have measurement gear, you can run measurements with a test sweep on each speaker to see if there are any obvious differences from tweeter damage (this would be best done outside to eliminate the influence of room acoustics).

Fine Music, Movies, Wine, and Friends - A Life Well Lived!
DMark1 is offline  
post #20 of 28 Old 01-13-2020, 02:25 PM
AVS Forum Special Member
 
indebtbassfreak's Avatar
 
Join Date: Apr 2016
Location: Squamish BC
Posts: 2,783
Mentioned: 43 Post(s)
Tagged: 0 Thread(s)
Quoted: 1520 Post(s)
Liked: 2928
Quote:
Originally Posted by genaccmiller View Post
Yes I have run Audyssey calibration multiple times and am very familiar with the whoop whoop whoop sound. Unfortunately, the mic does not let you do a test for sweep test, it only outputs what Audyssey uses to test.
I downloaded an "audio tone generator" app to my phone. I can play any frequency even fractions of any frequency and hold any frequency,,,, it will also do automated sweeps. There are also other tones it generates, i think something like this would be helpful for you. I downloaded this to try and isolate rattles in my room and holding what ever frequency causing the rattle made it easier to find and fix what could be fixed.

As noted make sure the volume is lower before running sweeps.

-Marantz SR-8012
-Yamaha BD-A1060
-Funk 21.0LX Master/Slave combo 4800 watts RMS/9600watts (peak)-
-Chane A-2.4 L/C/R
-Chane A-1.4 side/rear surrounds.
indebtbassfreak is offline  
post #21 of 28 Old 01-13-2020, 02:45 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
Quote:
Originally Posted by indebtbassfreak View Post
I downloaded an "audio tone generator" app to my phone. I can play any frequency even fractions of any frequency and hold any frequency,,,, it will also do automated sweeps. There are also other tones it generates, i think something like this would be helpful for you. I downloaded this to try and isolate rattles in my room and holding what ever frequency causing the rattle made it easier to find and fix what could be fixed.



As noted make sure the volume is lower before running sweeps.
Hello - when you did that I am assuming you tested speaker by speaker. Did you have to unplug all from the receiver and take turns plugging them in as you ran the sweep test? Can you give me name of the app?

Sent from my GM1917 using Tapatalk

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html
genaccmiller is offline  
post #22 of 28 Old 01-13-2020, 02:51 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
I downloaded an app for which I have shared pics here. Can I use this for sweep test? Can someone tell me how to run a sweep test as in do I need to plug out the speaker I am not testing and go round robin one speaker at a time? What exactly will I be listening for?

Sent from my GM1917 using Tapatalk

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html
genaccmiller is offline  
post #23 of 28 Old 01-13-2020, 07:08 PM
Member
 
Figit090's Avatar
 
Join Date: Apr 2011
Posts: 71
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 30 Post(s)
Liked: 36
It should increase in frequency at a reasonable rate from 20-20k hz and it will tell you by listening if there are any gaps in response that are significant.

I suggested audessy programming because you'd be familiar with it and I would suspect tweeter damage could be most evident with that test. Since you say it's hard for you to tell what's wrong (if anything) I suspected tweeter damage which can be hard to tell at first, or your mind is just fearing the worst....and nothing is wrong.

During a sweep ignore volume differences from one frequency to another that could be how sounds bounce around your room... Or the speaker's efficiency (not all frequencies will be the same amplitude by design).

You're looking for a huge gap, or a frequency that causes distortion. I.e., no sound above 10k hz or so could be a blown tweeter or crossover damage. No sound between 300-5k could indicate a mid-range driver issue or crossover damage in a three-way speaker. No sound below ~300hz could be woofer or crossover damage OR your amp cutoff because it's set to "small" speakers. A buzzing or crackle will tell you that driver is unhappy. If there is any issue report back.

Be cautious this time with your device volume, use 3/4 volume on the phone and low volume on the reciever. If you hear bad noises, stop and restart at a lower volume noting what went wrong. Then test another speaker.

Note that unless set to "large" speakers on every channel your amp may omit lower frequencies from some by default.

Sent from my Moto G (5S) Plus using Tapatalk

Last edited by Figit090; 01-13-2020 at 07:11 PM.
Figit090 is offline  
post #24 of 28 Old 01-13-2020, 07:38 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
Quote:
Originally Posted by Figit090 View Post
It should increase in frequency at a reasonable rate from 20-20k hz and it will tell you by listening if there are any gaps in response that are significant.

I suggested audessy programming because you'd be familiar with it and I would suspect tweeter damage could be most evident with that test. Since you say it's hard for you to tell what's wrong (if anything) I suspected tweeter damage which can be hard to tell at first, or your mind is just fearing the worst....and nothing is wrong.

During a sweep ignore volume differences from one frequency to another that could be how sounds bounce around your room... Or the speaker's efficiency (not all frequencies will be the same amplitude by design).

You're looking for a huge gap, or a frequency that causes distortion. I.e., no sound above 10k hz or so could be a blown tweeter or crossover damage. No sound between 300-5k could indicate a mid-range driver issue or crossover damage in a three-way speaker. No sound below ~300hz could be woofer or crossover damage OR your amp cutoff because it's set to "small" speakers. A buzzing or crackle will tell you that driver is unhappy. If there is any issue report back.

Be cautious this time with your device volume, use 3/4 volume on the phone and low volume on the reciever. If you hear bad noises, stop and restart at a lower volume noting what went wrong. Then test another speaker.

Note that unless set to "large" speakers on every channel your amp may omit lower frequencies from some by default.

Sent from my Moto G (5S) Plus using Tapatalk
Do I need to plug out all speakers except the one on which the test is ongoing?

Sent from my GM1917 using Tapatalk

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html
genaccmiller is offline  
post #25 of 28 Old 01-14-2020, 03:16 PM
AVS Forum Addicted Member
 
gajCA's Avatar
 
Join Date: Mar 2009
Location: Sonoma County, CA
Posts: 20,339
Mentioned: 240 Post(s)
Tagged: 2 Thread(s)
Quoted: 9573 Post(s)
Liked: 6618
Quote:
Originally Posted by genaccmiller View Post
Do I need to plug out all speakers except the one on which the test is ongoing?

Sent from my GM1917 using Tapatalk
Gena, just so you know, we've ALL done what you describe with no ill effects but just run these audio tones/sweeps, (at low volume first with each file then just turn up the volume to loudish but not over the top loud).

If anything is "missing" or sounds "weird" let us know what it is and on which set of tones/sweeps.

If you think the weird sound is coming out of just one speaker then you can take out the positive cable from the back of the other speakers to isolate that one speaker.

My guess is everything is just fine.

https://www.audiocheck.net/audiotests_index.php

https://www.audiocheck.net/testtones_index.php

Geoff A. J., California
gajCA is online now  
post #26 of 28 Old 01-14-2020, 03:18 PM - Thread Starter
AVS Forum Special Member
 
genaccmiller's Avatar
 
Join Date: Oct 2012
Posts: 1,504
Mentioned: 20 Post(s)
Tagged: 0 Thread(s)
Quoted: 796 Post(s)
Liked: 188
Quote:
Originally Posted by gajCA View Post
Gena, just so you know, we've ALL done what you describe with no ill effects but just run these audio tones/sweeps, (at low volume first with each file then just turn up the volume to loudish but not over the top loud).



If anything is "missing" or sounds "weird" let us know what it is and on which set of tones/sweeps.



If you think the weird sound is coming out of just one speaker then you can take out the positive cable from the back of the other speakers to isolate that one speaker.



My guess is everything is just fine.



https://www.audiocheck.net/audiotests_index.php



https://www.audiocheck.net/testtones_index.php
Yes I will do but do I need to unplug all speakers except the one being tested and the go around round robbing plugging out and plugging in?

Sent from my GM1917 using Tapatalk

Step by Step Theater Build - http://imgur.com/gallery/2tpaSru
My Theater Build Youtube Channel - https://www.youtube.com/channel/UCs_..._as=subscriber
My Theater Build Thread - https://www.avsforum.com/forum/19-de...ld-thread.html
genaccmiller is offline  
post #27 of 28 Old 01-14-2020, 03:47 PM
AVS Forum Addicted Member
 
gajCA's Avatar
 
Join Date: Mar 2009
Location: Sonoma County, CA
Posts: 20,339
Mentioned: 240 Post(s)
Tagged: 2 Thread(s)
Quoted: 9573 Post(s)
Liked: 6618
Quote:
Originally Posted by genaccmiller View Post
Yes I will do but do I need to unplug all speakers except the one being tested and the go around round robbing plugging out and plugging in?

Sent from my GM1917 using Tapatalk
If it was me I'd go into the receiver menu and temporarily set them all to "large" with no subwoofer and then play them all in 5 channel stereo or similar at moderately high volumes, (after starting very low to figure out the set volume of each file).

If you hear something weird it will most definitely not be in all the speakers so at that point you could ID the speaker and diagnose whether the issue is in the bass region leading to a woofer issue, higher frequencies or both which might be a crossover problem.

But if you all you have that "something is different" believe me, we've all felt that way initially after doing something like that and then as time goes by and we play music, movies, test tones whatnot, the paranoia goes away as in reality speakers are very robust at handling very large volume spikes for very short period.

Long period?

Yep, been there done that and blew both speaker woofers in the 70s by overdriving my speakers for hours not seconds.

Then I could CLEARLY hear a rattle playing bass heavy music.

Fixed under warranty by JBL coincidentally because I didn't fess up to being a bone headed college student who thought speakers could magically handle anything you could throw at them by twisting the volume knob of the amp to the end of its range.

Geoff A. J., California
gajCA is online now  
post #28 of 28 Old 01-14-2020, 04:26 PM
AVS Forum Addicted Member
 
gajCA's Avatar
 
Join Date: Mar 2009
Location: Sonoma County, CA
Posts: 20,339
Mentioned: 240 Post(s)
Tagged: 2 Thread(s)
Quoted: 9573 Post(s)
Liked: 6618
Quote:
Originally Posted by genaccmiller View Post
I also just talked to JBL. My Denon can produce 125 watts at 8 ohms. The speaker can do 250 watts at 6 ohms. So they are saying in any case even at full volume the Denon would not have gone over the capacity of the speaker. So they doubt if any damage could have been done. They do not know of any independent test to validate which came as a surprise to me. They are recommending however that it is better to power match the speaker to receiver and my receiver could be underpowered and could damage the speaker in the long run. I just shelled out quite some money for the receiver and am not looking to replace. If someone could walk me through how to test my speakers to ensure there is no damage I would be very grateful for the same.

Sent from my GM1917 using Tapatalk
They are giving you some bad advice unless JBL is lying about their 6 ohm rating and 92db sensitivity of those speakers.

Those speaker specs indicate they are easier to drive than any speaker I've ever owned (and most AVS members own), and I've never had an amp rated above 90 watts/channel.

You do NOT need to replace your receiver.

My 90 watt Denon AVR1912 driving 89db 8ohm rated speakers at "normal" listening volumes never gets 10 degrees F hotter than ambient temperature as measured by a laser thermometer.

It only gets to 15 degrees hotter with sustained loud movie listening which is a rare event.

When I first got my latest main speakers I purposely raised the volume knob a bit at a time to VERY high volumes and could hear distortion/complaining when I achieved levels I would never use and then backed it right down. I did that because the recommended maximum power handling is a surprisingly low 70 watts. Usher V602s, nobody else on AVS owns them not because they were super expensive at $1150/pair 10 years ago but because Usher has terrible distribution here, (made in Taiwan, but designed by DaPPolito, a famous designer).

Speakers generally tell you when they are unhappy, (as in my little experiment), or broken (as in my college "experiment"), in a very clear manner.

Geoff A. J., California
gajCA is online now  
Sponsored Links
Advertisement
 
Reply Speakers

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