Be Careful Where You Put Dv Tape at DVinfo.net

Go Back   DV Info Net > The Tools of DV and HD Production > The Long Black Line

The Long Black Line
Tape, tape and more tape; and decks; HDV, DV, VHS and more.


Reply
 
Thread Tools Search this Thread
Old June 23rd, 2004, 11:02 AM   #1
Trustee
 
Join Date: Jun 2003
Location: Somewhere in the Negev
Posts: 1,189
Be Careful Where You Put Dv Tape

I made the colossal mistake of placing one wedding video tape near my computer surround sound speaker. The magnet inside the small front speaker caused parts of my tape to erase and parts of the image and sound to degenerate.

Put your tapes down AWAY from your desktop speakers! Don't be a moron like me!
__________________
Interesting, if true. And interesting anyway.
Hugh DiMauro is offline   Reply With Quote
Old June 23rd, 2004, 02:52 PM   #2
Inner Circle
 
Join Date: Sep 2002
Location: San Mateo, CA
Posts: 3,840
Keep them in their plastic cases as well, as that provides a tiny bit of shielding.

Other "magnetic" sources on your everyday desktop.

Paper Clip containters - (Often have magnets in them)

Telephones (Especially older ones)

Monitors (Again, especially older ones)

Electric motors for fans.

Basically, treat your tapes like gold. If they are not being used in the deck, put them away in their cases on a nice dry cool shelf.
Richard Alvarez is offline   Reply With Quote
Old June 25th, 2004, 03:26 PM   #3
Trustee
 
Join Date: Sep 2002
Location: Boston, MA
Posts: 1,564
thx for advice as i don't have magnetically shielded speakers around my workstation =).
__________________
bow wow wow
Yi Fong Yu is offline   Reply With Quote
Old July 24th, 2004, 04:23 AM   #4
Major Player
 
Join Date: Oct 2003
Location: Los Angeles, Ca USA
Posts: 542
Couple more to consider.

You toss your tapes on the front seat for the short drive home, but your front seat happens to be right by your mega speakers.

Two, anybody know if your heart is considered a magnetic source?
Can putting a DV tape in your chest pocket be considered a no no?
Alessandro Machi is offline   Reply With Quote
Old July 24th, 2004, 06:44 AM   #5
Warden
 
Join Date: Mar 2002
Location: Clearwater, FL
Posts: 8,267
Hugh, you might want to do a little experiment. The coercivity needs to be very high to erase mini DV tapes. The low end tape erasers, like at Radio Shack, are not strong enough to even do a partial erasure. If the magnet in your speakers were strong enough to erase a mini DV tape, your computer monitor would be severely distorted. You can do a search on this, this topic has been discussed in the past. I suggest to tape something unimportant and set that tape on your speaker. When that tape is played you will have no distortion on the the tape. I think you will need to look elsewhere to find the cause of your tape issues.
__________________
Jeff Donald
Carpe Diem




Search DVinfo.net for quick answers | Where to Buy? From the best in the business: DVinfo.net sponsors
Jeff Donald is offline   Reply With Quote
Old July 24th, 2004, 06:58 AM   #6
Old Boot
 
Join Date: Aug 2002
Location: London UK
Posts: 3,528
Controlled Experiment .. .

"The magnet inside the small front speaker caused parts of my tape to erase and parts of the image and sound to degenerate"

. . having read Jeff's feedback, Hugh, do you want to do a controlled experiment with some "waste" footage. The "effect" you are seeing MAY be due to something else, completely.

Grazie
Graham Bernard is offline   Reply With Quote
Old August 10th, 2004, 02:33 AM   #7
Major Player
 
Join Date: Aug 2002
Location: Eugene, Oregon
Posts: 366
I also doubt that your tape problems were caused by speaker magnets. I've never had an accidentally erased or even partially distorted video tape and I've had many of them close to big speakers.
Your recording unit may be the culprit.
Personally, the thought of someone who runs MegaBass speakers in a car, getting their tapes ruined, strikes me as a bit of electronical justice!

Steve McDonald
Steve McDonald is offline   Reply With Quote
Old August 20th, 2004, 11:40 AM   #8
Regular Crew
 
Join Date: Jul 2003
Location: Boone, NC
Posts: 115
If you have professional monitors (speakers), arent they really well shielded so you can put stuff right beside them? It would only be consumer speakers that would be more of the problem, right?
Jonathan Stanley is offline   Reply With Quote
Old August 22nd, 2004, 08:36 PM   #9
Major Player
 
Join Date: May 2003
Location: Akron, Ohio
Posts: 496
I have a pair of polk Lsi 9 speakers(they have big magnets) on my desk, and lay mini dv tapes on the speaker cabnets all the time. Its never caused problems.


John
John DeLuca is offline   Reply With Quote
Old September 28th, 2004, 01:37 PM   #10
Trustee
 
Join Date: Jun 2003
Location: Somewhere in the Negev
Posts: 1,189
Well, my JVC studio monitor severely distorts by getting the corner "spikes" and color blemishes when next to my 5.1 surround sound speakers.
__________________
Interesting, if true. And interesting anyway.
Hugh DiMauro is offline   Reply With Quote
Old September 28th, 2004, 01:59 PM   #11
Major Player
 
Join Date: Sep 2002
Location: Belgium
Posts: 804
The most severe situation/test, and even that wouldn't change yr tape content, is to put the tape against the bezel area of a color TV monitor while starting it up (not from standby). This startup cause the internal degaussing (demagnitising) coil to activate for a second or so and generates much stronger alternating fields than speakers do
Andre De Clercq is offline   Reply With Quote
Old September 28th, 2004, 07:47 PM   #12
Major Player
 
Join Date: Sep 2003
Location: Miami, FL
Posts: 574
Hugh's third Purple Heart!

Dude, are you sure it's not that steel plate in your head that is causing the erasures??? :)

See you in DC next week.

RB
__________________
"The future ain't what it used to be." Yogi Berra.
www.rbravo.com
Rick Bravo is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > The Tools of DV and HD Production > The Long Black Line

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 10:37 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network