SEATTLE -- A group of Seahawks fans hopes to set a Guinness World Record for the loudest crowd roar at a sports stadium.

The group called Volume 12 hopes to set the record during the Seahawks home opener Sunday against the 49ers at CenturyLink Field. That will be a Sunday night game on KING 5.

The current world record of nearly 132 decibels was set in 2011 during a soccer match in Turkey. The Seahawks website says Seattle's 12th Man has been measured at 112 decibels. However, CenturyLink Field can hold 7,000 more fans than the stadium where the current record is held.

Volume 12 says Guinness World Records will attend the game as an official judge for the world record attempt.

The guidelines say Hawks fans will get three official attempts to break the record. There will be no official 1-2-3 GO cue from stadium officials. It's a true organic fan movement for the fans, by the fans, Volume 12 says.

Attempt No. 1 will take place on the 49ers first offensive possession. Fans are asked to be in theirs seats and ready to participate during the opening kickoff.

Fans will be notified about the results on the Volume 12 official Facebook and Twitter feed immediately following the attempt.

The Hearing, Speech & Deafness Center is working with the Volume 12 to distribute thousands of free earplugs (courtesy of 3M), along with a Noise-Induced Hearing Loss (NIHL) prevention flyer to Seahawks fans attending Sunday s game.

They are recruiting volunteers to help package and distribute the earplugs. How to help

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