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Go Back   Blu-ray Forum > Audio > Subwoofers


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Old 08-07-2014, 02:55 PM   #1
Visionist Visionist is offline
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Default Do subs need power protection?

If you have a surge protector, should you make every effort to ensure the sub is also connected to it?

It'll save me some hassle if I don't need to...
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Old 08-07-2014, 04:27 PM   #2
Tom V. Tom V. is offline
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Originally Posted by Visionist View Post
If you have a surge protector, should you make every effort to ensure the sub is also connected to it?

It'll save me some hassle if I don't need to...

Almost all modern electronics have built in "surge" protection these days. If anyone is seriously about home protection have a "whole house" surge protector installed at the main fuse box. These are surprisingly affordable too.

Also, some "surge" protectors/power conditioners can actually shorten the life span of electronics if they limit the available current. This is particularly true with power amplifiers(sub amps too).

Going straight to the wall AC output is fine 99.9% of the time.

Tom V.
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Old 08-11-2014, 06:48 PM   #3
timcat4843 timcat4843 is offline
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Quote:
Originally Posted by Tom V. View Post
Almost all modern electronics have built in "surge" protection these days.

Also, some "surge" protectors/power conditioners can actually shorten the life span of electronics if they limit the available current. This is particularly true with power amplifiers(sub amps too).

Going straight to the wall AC output is fine 99.9% of the time.

Tom V.
Power Sound Audio
Didn't know that.
Thanks Tom, as I was about to pickup some surge protectors.

However, if there are thunderstorms in the weather forecast, I have a habit of unplugging
all my electronic gear from the wall AC outlets.

Is that a good idea or totally unnecessary?
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Old 08-11-2014, 08:48 PM   #4
Blu-Dog Blu-Dog is offline
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Quote:
Originally Posted by timcat4843 View Post
Didn't know that.
Thanks Tom, as I was about to pickup some surge protectors.

However, if there are thunderstorms in the weather forecast, I have a habit of unplugging
all my electronic gear from the wall AC outlets.

Is that a good idea or totally unnecessary?

I've heard it both ways, but I like surge protection. Especially if your sub amp rests in "standby" mode a lot.


It doesn't have to be fancy, just something that stops lightning from frying your amp.
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Old 08-12-2014, 04:31 PM   #5
Tom V. Tom V. is offline
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I've heard it both ways, but I like surge protection. Especially if your sub amp rests in "standby" mode a lot.


It doesn't have to be fancy, just something that stops lightning from frying your amp.
Just remember if the home takes a direct lightning strike you're going to have ridiculously large amounts of energy there. Something like 100,000 amperes and a million to a billion volts arcing all over your home looking for the paths of least resitance. All the Sat/Cable box stuff is doomed and anything connected to them. Phone lines, Lan lines, Co-ax, etc. I guess having a surge protector in line can't hurt...I'm just not sure if we can really do much to counter a direct hit.

IMO, the "whole home" application (mounted directly into the main fuse box with HUGE grounds applied just a few feet away into the yard outside) is the way to go. I had one installed maybe 10(?) years ago and it was only a couple hundred IIRC.

Tom V.
Power Sound Audio
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Old 08-12-2014, 04:41 PM   #6
slimdude slimdude is offline
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Surge protection, or no serge protection can prevent an act of God.
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Old 08-12-2014, 04:22 PM   #7
Tom V. Tom V. is offline
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Originally Posted by timcat4843 View Post
Didn't know that.
Thanks Tom, as I was about to pickup some surge protectors.

However, if there are thunderstorms in the weather forecast, I have a habit of unplugging
all my electronic gear from the wall AC outlets.

Is that a good idea or totally unnecessary?
I've been in homes hit by lightning a couple times. If something catastrophic like this happens, your surge protection is going to be worthless imo. Unplugging can't hurt but remember all of the phone, lan, and sat/cable co-ax will also kill anything connected.

Also, if the power ever goes off, try to turn everything off/disconnect the AC. The in-rush when the power comes back on can cause problems too.

That isn't to say a VERY close strike couldn't introduce a surge into your AC though. A Basic "sacrificial" surge unit is fine. Just stay away from the "conditioners" or ANYTHING that could limit the current to device.

IMO, the cheaper surge protectors are fine the $10-$20 Belkins for example.

Paying $200-$300(and more) for those big "conditioners" is a waste of money and can actually do more harm than good.

Tom V.
Power Sound Audio

Last edited by Tom V.; 08-12-2014 at 04:32 PM.
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Old 10-28-2019, 05:47 AM   #8
THE_FORCE THE_FORCE is online now
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Quote:
Originally Posted by Tom V. View Post

Also, if the power ever goes off, try to turn everything off/disconnect the AC. The in-rush when the power comes back on can cause problems too.
Iíve had a pair of F112 Fathoms for over a decade, and theyíve just both been killed for the second time since Iíve had them. Iím pretty sure we didnít have a lightning storm and I suspect it was the power coming back on after a power outage, like you mentioned. I was asleep so couldnít unplug them.

They were both connected to a fairly new Belkin surge protector and were, yet again, the only product in our entire household that suffered...including a BK sub in the bedroom.

The capacitors were replaced with decent ones last time they were fried six years ago, as apparently JL Audio used cheapo capacitors in the first iteration of the Fathoms, but Iím not sure what the problem is this time.

Itís just really bloody annoying as now Iíve got to somehow find boxes for them and move them both down two flights of stairs, at over 52kg each(!), and get them shipped to the UK repair centre, then try and get them back up the stairs again afterwards. I donít just dread the cost of it all, I dread my back being permanently buggered in the process!!

Itís seriously made me question buying heavy, expensive subs ever again as even surge protection isnít a guarantee that they will survive.

Gutted.
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Old 10-29-2019, 12:18 PM   #9
gotmule gotmule is offline
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Quote:
Originally Posted by THE_FORCE View Post
Iíve had a pair of F112 Fathoms for over a decade, and theyíve just both been killed for the second time since Iíve had them. Iím pretty sure we didnít have a lightning storm and I suspect it was the power coming back on after a power outage, like you mentioned. I was asleep so couldnít unplug them.

They were both connected to a fairly new Belkin surge protector and were, yet again, the only product in our entire household that suffered...including a BK sub in the bedroom.

The capacitors were replaced with decent ones last time they were fried six years ago, as apparently JL Audio used cheapo capacitors in the first iteration of the Fathoms, but Iím not sure what the problem is this time.

Itís just really bloody annoying as now Iíve got to somehow find boxes for them and move them both down two flights of stairs, at over 52kg each(!), and get them shipped to the UK repair centre, then try and get them back up the stairs again afterwards. I donít just dread the cost of it all, I dread my back being permanently buggered in the process!!

Itís seriously made me question buying heavy, expensive subs ever again as even surge protection isnít a guarantee that they will survive.

Gutted.
That sucks to hear about your Fathoms. Personally, I unplug my subs when not in use, as that is the best way to prevent spikes and such. I also donít want to limit any current going to them and a lot of surge protectors will do exactly that. Never downgrade your subs unless absolutely necessary, as you will miss the effect if you do settle.
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THE_FORCE (10-29-2019)
Old 08-23-2014, 02:18 AM   #10
mdetrick mdetrick is offline
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From my understanding surge protection comes in 2 flavors, sacrificial elements (generic Walmart) or non sacrificial elements (Furman etc.). I've been told the sacrificial element protectors only last about 5-7 years depending on the region you live in, before they are no better than an extension cord. I lost an amp on a cheap surge protector but have never had any issues with my Furman's. I'm not sure if it's luck or if they really make a difference.
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Old 12-15-2019, 01:10 PM   #11
oddbox83 oddbox83 is offline
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I add surge protection to the main equipment, though the sub is hived off on it's own power elsewhere by necessity and I don't bother. In my experience, the way a sub works faulty SPDIF cables are more likely to blow something in the sub. The loud bang the subs make when the connection is faulty is worrying. It didn't break mine when it happened but I'm surprised it didn't do damage.

My fuse box is a new one as well due to a lot of renovations in the house which gives me added peace of mind. The individual switches are designed to be softly self-sacrificial, they'll blow first but find the issue and switch it back on.
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