FAQ Can I amend the specifications of Tigris speakers? No, Earthquake Sound reserves the right to amend details of the specifications without notice.Where can I find the copyright information for Earthquake Sound? The copyright information can be found on the official manual of Earthquake Sound Tigris speakers.What is the contact information for Earthquake Sound? You can contact Earthquake Sound at 2727 McCone Avenue, Hayward CA, 94545. Phone: 510-732-1000Fax: 510-732-1095.