Death by bass?

danimal · 07-06-2009, 02:43 PM

I have a pretty substantial system in my truck, and got to thinking today how well my car PC is going to hold up through all that pounding.

Any ideas or prior experience with this kinda sittuation?

im looking at roughly 120 130 DB

soundman98 · 07-06-2009, 03:02 PM

as long as your computer is securly bolted down, it should be ok. just don't let any computer components rattle too much

.

a little OT, but what equipment are you running to get 120-130db?

danimal · 07-06-2009, 03:18 PM

two 12" 1800W fubars and a 3000W mono block amp. ported box tuned to 45- 50 hz

PaulF · 07-06-2009, 03:46 PM

As long as everything is bolted down, the hard drive is the only problem. That will tear a hard drive apart. You should look int a solid state disk.

Enforcer · 07-06-2009, 04:06 PM

I think you ears are more likely to fail before the PC does.

soundman98 · 07-06-2009, 04:48 PM

Quote: Originally Posted by PaulF

As long as everything is bolted down, the hard drive is the only problem. That will tear a hard drive apart. You should look int a solid state disk.

i really think the whole SSD argument is getting blown out of proportion for a lot of people. do a search for the couple of threads/arguments on hdd placement/orientation(horizontal/verticle). there was member that has put laptop drives in small military boats--a very harsh environment--said that the marines that ride in the boats have been known to shrink from the force of the boat going over waves, claimed that the drives are doing fine.

unless the OP were to mount the hdd directly over a sub and mount it loosely, the spl shouldn't affect it very much, assuming that it is mounted to a firm surface.

EDIT: i would be very interested in any data anyone has to disprove any points i have made, so far, i have not seen/read anything to justify that a ssd drive is better in a vibration prone install.

PaulF · 07-06-2009, 05:05 PM

Quote: Originally Posted by soundman98

i really think the whole SSD argument is getting blown out of proportion for a lot of people. do a search for the couple of threads/arguments on hdd placement/orientation(horizontal/verticle). there was member that has put laptop drives in small military boats--a very harsh environment--said that the marines that ride in the boats have been known to shrink from the force of the boat going over waves, claimed that the drives are doing fine.

unless the OP were to mount the hdd directly over a sub and mount it loosely, the spl shouldn't affect it very much, assuming that it is mounted to a firm surface.

EDIT: i would be very interested in any data anyone has to disprove any points i have made, so far, i have not seen/read anything to justify that a ssd drive is better in a vibration prone install.

Hard drives can handle bumps, they can't handle constant vibration though. I don't care if you mount the thing to a block of cement, the thing is going to vibrate in that car if his sub is putting out 130 db. Look at the threads on this forum showing people who mount their hard drives in the same trunk as a serious subwoofer. Sure there are hard drives that are rugged enough to handle it, but they cost as much as an SSD anyway. An SSD has no moving parts that can get messed up therefore a subwoofer can't kill one unless it makes the solder come apart.

Bugbyte · 07-06-2009, 05:14 PM

IF you are worried about vibration, THEN use either an automotive grade HDD (you can find them on the mp3car store) or an SSD.

On the other hand, if you already have a drive, by all means, try it out and see. I second the notion that you ought not put it close to your subs, but as long as you aren't mounting it to a surface that will vibrate due to the sub, the HDD enclosure will protect the platter by reflecting much of the sound. I'd go with bolting it securely to something firm or just keeping it out of the line of fire.

Nobody on this board has quantitative data on HDD vibration but I can't recall a case where it has been a problem in a car with a regular sound system. Most of the time I've seen people fault the hard disk, it turns out to be a connector or power problem.

danimal · 07-06-2009, 06:29 PM

Well sounds good Ill post up my results after i have the subs pounding for a while and see what that dose to the HD

nalav · 07-07-2009, 10:14 AM

Working on my truck (well mostly just ordering stuff for it now) and I'm going to try out Seagate's EE series hard drive. I also have some mounting options in my mind that should help out with the vibration. My truck will have 3 12" Fi Qs (dual 1ohm) with a 1200 watt RMS AudioQue amp for each one. I'll post in a few months when I get it all completed whether my drive lasted or not

nicr4wks · 07-07-2009, 10:59 AM

Interested to see how this goes, just ordered a screen and in the planning stages of my first car-pc. I already have a decent amount of audio equipment in the car to the point that if i play a 10hz test tone around 30% volume you can see the back seat flexing in and out, behind the seat there is a solid metal plate, then the car battery, some rear-wheel steering computers then the subs in the boot so that's quiet a lot to get through to make the back seat flex the way it does, not to mention the various vibrations and flexing that occurs during normal audio play back.

Working with PC hardware for 14 years I can't imagine any mechanical hdd is going to withstand that sort of torture if placed in the boot no matter how it was mounted.

CyberStingray · 07-07-2009, 11:19 AM

Sound will affect the drive... see these test results for proof...

http://www.youtube.com/watch?v=tDacjrSCeq4

http://blogs.sun.com/brendan/entry/unusual_disk_latency

That being said, make sure you have an image of the drive and try yourself...

Maheriano · 07-07-2009, 12:24 PM

Quote: Originally Posted by soundman98

a little OT, but what equipment are you running to get 120-130db?

It's not so hard, I hit 137.5 in a DB Drag competition with just this:
- JVC El-Kameleon KDLX-30 headunit
- Rockford Fosgate HE2 12 inch subwoofer
- Rockford Fosgate 250m Power amplifier

That was with a 250 watt amplifier so if you're running a 3000 watt and only hitting the same range, it's either not class D or you don't have it hooked up properly. The SQL was really good on it too.

PaulF · 07-07-2009, 12:38 PM

Quote: Originally Posted by Maheriano

It's not so hard, I hit 137.5 in a DB Drag competition with just this:
- JVC El-Kameleon KDLX-30 headunit
- Rockford Fosgate HE2 12 inch subwoofer
- Rockford Fosgate 250m Power amplifier

That was with a 250 watt amplifier so if you're running a 3000 watt and only hitting the same range, it's either not class D or you don't have it hooked up properly. The SQL was really good on it too.

Where were you holding the db meter?

Maheriano · 07-07-2009, 12:42 PM

Quote: Originally Posted by PaulF

Where were you holding the db meter?

meter was the same in every car, it was on a stand on the passenger side in front of the glovebox. Engine was revved to 2500 RPM for the drag and it was in a 2000 4 door Cavalier with stock battery/alternator.

User Name		Remember Me?
Password