I think my Sub is gonna die.... - Blu-ray Forum

Beta Man · 02-23-2008, 07:04 PM

Long story short, I have been shopping around new subs (sunfire EQ is being auditioned next week, thanks to the help of others here) But I can't afford a new one quite yet, But in the meantime, my sub has a very apparent "HUM" from the amp, even when it's not connected to my receiver..... I took it appart, checked connections, looked for melted/crossed wires, and it all looks good. Since it does it when it's not connected, I know it's the amp in it that is going bad. I plugged it into it's own dedicated monster-power-source, and it still does it, so it's not EMI interference, and it's 2 prong, so it's not a ground issue.

Anyone know if there is a way to save it, or if it will continue to work, or is it done for?????? I know I'm planning on upgrading, but I'd really like to keep this one working for my Rec-room, and I don't want to have to purchase its replacement this soon, because my wife is still salty about the $9k I've spent on speakers in the past 3 months, and honestly I don't want to tell her I'm getting a new sub before father's day (that was our arrangement!)

If anyone knows of anything that might be causing this, please help!

It's a CV Sub-Model 150 (piece of junk I know) I've had it for 10 years, so nothing would surprise me. When listening to something, I can't hear it, but when the T.V. and Stereo are off, I hear it quite clearly (as if there was a refridgerator running just on the other side of the wall)

gearyt · 02-23-2008, 07:21 PM

Hum is usually prevented by capacitors in the amp, they are inexpensive
so you may want to have a service guy look at it... me, I would use it as an excuse to go shopping

Beta Man · 02-23-2008, 07:24 PM

Quote:

Originally Posted by gearyt

Hum is usually prevented by capacitors in the amp, they are inexpensive
so you may want to have a service guy look at it... me, I would use it as an excuse to go shopping

The fact that the sub is a piece of junk is enough reason to go shopping....

Will it continue to work though? if it just dies, that's fine, I'll throw it out, but I don't want to even lug the thing to a shop, like I said..... it's pretty old!

gearyt · 02-23-2008, 07:52 PM

you'll love this answer... It depends..

IF the Cap is on the main power supply, when it goes, life will get interesting, and there is a slight fire hazzard....over voltage to the regulator which will probably handle it and just shut down, but....

If I had to guess, I would leave it, unless my family ran away for a week-end holiday

g

Beta Man · 02-23-2008, 08:03 PM

Fire Hazzard....... now THAT is a good reason to upgrade!

Marcusarilius · 02-23-2008, 08:25 PM

Quote:

Originally Posted by Beta Man

Fire Hazzard....... now THAT is a good reason to upgrade!

And a very good position to take with your wife on getting a new sub.

"Sweetie? What would you rather have? Lustrious full bottom sound, or for the house to burn down?"

Let her decide. It puts the ball in her court. She still has the illusion of power and decision making in the household and you get what you wanted all along!

Beta Man · 02-25-2008, 12:30 AM

O.K..... I couldn't stand the "buzz" any longer. I ordered a Def-Tech 14" Reference sub from a local shop, and they're giving me 30 days in-home to decide if I want to keep it, or just credit it towards another one (I've auditioned a couple now, so I'm sure I can find something) I haven't listened to this sub in my setup yet, so I'm hoping for the best.

saprano · 03-02-2008, 05:59 AM

I also have a hum in my sub,and like the op it evens hums when its not pluged into the receiver. so this is not a ground? i thought is was. and my receiver hums to, they both hum at the same time and stop at the same time. could this be a bad wall socet?. cause if i pluge them both into another outlet in my house ether the hum is gone or its so low you have to put your ear on it to hear it. i think if they were both bad they would have the same loud hum in any socet. any advice?. they even hum at the same time when i pluge one in a differnt outlet.

saprano · 03-02-2008, 06:33 AM

and this hum problem just started to happen. they both were fine when i got them. then about 2 weeks later it started up.

Beta Man · 03-02-2008, 08:45 PM

Quote:

Originally Posted by saprano

I also have a hum in my sub,and like the op it evens hums when its not pluged into the receiver. so this is not a ground? i thought is was. and my receiver hums to, they both hum at the same time and stop at the same time. could this be a bad wall socet?. cause if i pluge them both into another outlet in my house ether the hum is gone or its so low you have to put your ear on it to hear it. i think if they were both bad they would have the same loud hum in any socet. any advice?. they even hum at the same time when i pluge one in a differnt outlet.

My new sub doesn't hum at all..... but it goes LOOOOWWWWW !

MaleManGuy · 03-02-2008, 11:51 PM

Quote:

Originally Posted by Beta Man

Long story short, I have been shopping around new subs (sunfire EQ is being auditioned next week, thanks to the help of others here) But I can't afford a new one quite yet, But in the meantime, my sub has a very apparent "HUM" from the amp, even when it's not connected to my receiver..... I took it appart, checked connections, looked for melted/crossed wires, and it all looks good. Since it does it when it's not connected, I know it's the amp in it that is going bad. I plugged it into it's own dedicated monster-power-source, and it still does it, so it's not EMI interference, and it's 2 prong, so it's not a ground issue.

Anyone know if there is a way to save it, or if it will continue to work, or is it done for?????? I know I'm planning on upgrading, but I'd really like to keep this one working for my Rec-room, and I don't want to have to purchase its replacement this soon, because my wife is still salty about the $9k I've spent on speakers in the past 3 months, and honestly I don't want to tell her I'm getting a new sub before father's day (that was our arrangement!)

If anyone knows of anything that might be causing this, please help!

It's a CV Sub-Model 150 (piece of junk I know) I've had it for 10 years, so nothing would surprise me. When listening to something, I can't hear it, but when the T.V. and Stereo are off, I hear it quite clearly (as if there was a refridgerator running just on the other side of the wall)

It's probably saveable... altho you'd end up replacing the capacitors on the power supply filter in the sub I am guessing. 60hz noise is getting through because the filter stage isn't working. Mostly caps after the rectifier and power regulator.

saprano · 03-03-2008, 03:03 AM

Quote:

Originally Posted by Beta Man

My new sub doesn't hum at all..... but it goes LOOOOWWWWW !

What?

Beta Man · 03-03-2008, 12:58 PM

Quote:

Originally Posted by saprano

What?

I picked up a Definitive Technology 14" Reference Series Super-Cube..... after careful deliberation I decided to just keep it, and if I decide to add another sub down the road for music-only, so be it. I'm really starting to warm up to the new sound!

Beta Man · 03-03-2008, 12:59 PM

Quote:

Originally Posted by Beta Man

O.K..... I couldn't stand the "buzz" any longer. I ordered a Def-Tech 14" Reference sub from a local shop, and they're giving me 30 days in-home to decide if I want to keep it, or just credit it towards another one (I've auditioned a couple now, so I'm sure I can find something) I haven't listened to this sub in my setup yet, so I'm hoping for the best.

See last post..... further explanation!

tsken02 · 03-06-2008, 02:34 AM

My sub just started thumping on its own. I tried unplugging from the receiver, and it keeps going!

What do you think? Power problems? Bad sub?

smv25 · 03-06-2008, 08:11 AM

I got this at AMAZON.COM for only
$189 JBL Sub 12 500Watt(peak) and never looked back.

The exact sub is anywhere from $300-500 at Circuit City or Best Buy.
This is a middle end sub for like the bedroom or small living room.

If you want something more serious get an Aperion Intimus S-10

Also, AVOID Mini Vee's at all costs!

krazeyeyez · 03-06-2008, 05:52 PM

i know alot of people here are fans of svs, how do you guys feel about klipsch subwoofers. i kinda wanna finish off my system with the same brand, but from what i have heard i can get more thump for my buck from another brand.
thoughts?

Snowgod · 03-06-2008, 06:07 PM

I love my HSU-Research sub and it is used with my Klipsch reference system. Truly incredible sub. Makes Elenore sound like She is in the room with me. Very tunable for room acoustics.

I have always found that amplifiers will hum if not properly grounded. I also do not ground to water pipes to avoid lightening from tree strikes coming back through the ground wire. I have a 9ft copper grounding rod that only hooks up to the electronic devices in my house.

Beta Man · 03-06-2008, 06:10 PM

It's not important to timbre match a sub..... with that being said.... I'd look at REL subs, or others.... there are many out there.

MacDaddyOJack · 03-06-2008, 06:29 PM

Quote:

Originally Posted by krazeyeyez

i know alot of people here are fans of svs, how do you guys feel about klipsch subwoofers. i kinda wanna finish off my system with the same brand, but from what i have heard i can get more thump for my buck from another brand.
thoughts?

I upgraded from a Klipsch to an SVS about a month ago, best thing I ever did. Check the thread "calling all SVS owners" and you can see my comparison.

02-23-2008, 07:04 PM	#1
Beta Man Moderator Top contributor Member since:Jan 2008 Location:Juuuuuuuust A Bit Outside.... Home Theater Gallery:4 Blu-ray collection:268 Blu-ray reviews: 18 Trading Score:25	I think my Sub is gonna die.... Long story short, I have been shopping around new subs (sunfire EQ is being auditioned next week, thanks to the help of others here) But I can't afford a new one quite yet, But in the meantime, my sub has a very apparent "HUM" from the amp, even when it's not connected to my receiver..... I took it appart, checked connections, looked for melted/crossed wires, and it all looks good. Since it does it when it's not connected, I know it's the amp in it that is going bad. I plugged it into it's own dedicated monster-power-source, and it still does it, so it's not EMI interference, and it's 2 prong, so it's not a ground issue. Anyone know if there is a way to save it, or if it will continue to work, or is it done for?????? I know I'm planning on upgrading, but I'd really like to keep this one working for my Rec-room, and I don't want to have to purchase its replacement this soon, because my wife is still salty about the $9k I've spent on speakers in the past 3 months, and honestly I don't want to tell her I'm getting a new sub before father's day (that was our arrangement!) If anyone knows of anything that might be causing this, please help! It's a CV Sub-Model 150 (piece of junk I know) I've had it for 10 years, so nothing would surprise me. When listening to something, I can't hear it, but when the T.V. and Stereo are off, I hear it quite clearly (as if there was a refridgerator running just on the other side of the wall)

03-02-2008, 05:59 AM	#8
saprano Blu-ray Champion Top contributor Member since:Oct 2007 Location:Bronx, New York Blu-ray collection:495 Blu-ray reviews:2 Trading Score:9	I also have a hum in my sub,and like the op it evens hums when its not pluged into the receiver. so this is not a ground? i thought is was. and my receiver hums to, they both hum at the same time and stop at the same time. could this be a bad wall socet?. cause if i pluge them both into another outlet in my house ether the hum is gone or its so low you have to put your ear on it to hear it. i think if they were both bad they would have the same loud hum in any socet. any advice?. they even hum at the same time when i pluge one in a differnt outlet. Last edited by saprano; 03-02-2008 at 06:17 AM.

03-06-2008, 02:34 AM	#15
tsken02 Junior Member Member since:Dec 2007 Blu-ray collection:293 Blu-ray reviews:2	Thumping? My sub just started thumping on its own. I tried unplugging from the receiver, and it keeps going! What do you think? Power problems? Bad sub?

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02-23-2008, 07:21 PM	#2
gearyt Power Member Member since:Aug 2007 Location:Henderson, NV Home Theater Gallery:8 Blu-ray collection:33	Hum is usually prevented by capacitors in the amp, they are inexpensive so you may want to have a service guy look at it... me, I would use it as an excuse to go shopping

02-23-2008, 07:52 PM	#4
gearyt Power Member Member since:Aug 2007 Location:Henderson, NV Home Theater Gallery:8 Blu-ray collection:33	you'll love this answer... It depends.. IF the Cap is on the main power supply, when it goes, life will get interesting, and there is a slight fire hazzard....over voltage to the regulator which will probably handle it and just shut down, but.... If I had to guess, I would leave it, unless my family ran away for a week-end holiday g

02-23-2008, 08:03 PM	#5
Beta Man Moderator Top contributor Member since:Jan 2008 Location:Juuuuuuuust A Bit Outside.... Home Theater Gallery:4 Blu-ray collection:268 Blu-ray reviews: 18 Trading Score:25	Fire Hazzard....... now THAT is a good reason to upgrade!

02-25-2008, 12:30 AM	#7
Beta Man Moderator Top contributor Member since:Jan 2008 Location:Juuuuuuuust A Bit Outside.... Home Theater Gallery:4 Blu-ray collection:268 Blu-ray reviews: 18 Trading Score:25	O.K..... I couldn't stand the "buzz" any longer. I ordered a Def-Tech 14" Reference sub from a local shop, and they're giving me 30 days in-home to decide if I want to keep it, or just credit it towards another one (I've auditioned a couple now, so I'm sure I can find something) I haven't listened to this sub in my setup yet, so I'm hoping for the best.

03-02-2008, 06:33 AM	#9
saprano Blu-ray Champion Top contributor Member since:Oct 2007 Location:Bronx, New York Blu-ray collection:495 Blu-ray reviews:2 Trading Score:9	and this hum problem just started to happen. they both were fine when i got them. then about 2 weeks later it started up.

03-06-2008, 08:11 AM	#16
smv25 Member Member since:Mar 2008	I got this at AMAZON.COM for only $189 JBL Sub 12 500Watt(peak) and never looked back. The exact sub is anywhere from $300-500 at Circuit City or Best Buy. This is a middle end sub for like the bedroom or small living room. If you want something more serious get an Aperion Intimus S-10 Also, AVOID Mini Vee's at all costs!

03-06-2008, 05:52 PM	#17
krazeyeyez Blu-ray Samurai Member since:Dec 2007 Location:the guy on the couch Home Theater Gallery:18 Blu-ray collection:287 Blu-ray reviews:4	i know alot of people here are fans of svs, how do you guys feel about klipsch subwoofers. i kinda wanna finish off my system with the same brand, but from what i have heard i can get more thump for my buck from another brand. thoughts?

03-06-2008, 06:07 PM	#18
Snowgod Active Member Member since:Jul 2007 Location:Central NH	I love my HSU-Research sub and it is used with my Klipsch reference system. Truly incredible sub. Makes Elenore sound like She is in the room with me. Very tunable for room acoustics. I have always found that amplifiers will hum if not properly grounded. I also do not ground to water pipes to avoid lightening from tree strikes coming back through the ground wire. I have a 9ft copper grounding rod that only hooks up to the electronic devices in my house.

03-06-2008, 06:10 PM	#19
Beta Man Moderator Top contributor Member since:Jan 2008 Location:Juuuuuuuust A Bit Outside.... Home Theater Gallery:4 Blu-ray collection:268 Blu-ray reviews: 18 Trading Score:25	It's not important to timbre match a sub..... with that being said.... I'd look at REL subs, or others.... there are many out there.

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