Integrity Of The InstallWhether you want a simple upgrade or an extravagant install, the car audio installation team at East Hamilton Radio (EHR) can make all your listening dreams come true. According to Brad Corke, installation expert, the EHR team has seen it all. The EHR underground install bay is 8,000 square feet and can accommodate up to 20 cars. Most installs are done on site, but the install team also does off site projects like audio installs on boats or heavy machinery.