The amplifier includes a 20-amp onboard fuse requirement and operates from an 11 to 15 VDC vehicle electrical system
or other space-conscious installations
The 88 mm mounting depth helps make installation possible where conventional full-depth woofers may not fit
This construction is intended to balance rigidity
The enclosure uses a very thick MDF cabinet to provide a rigid mounting structure for the subwoofer
Hertz SP4-500 4-Channel Class D Car Amplifier Installation Parts The amplifier includes a 20-ampThe Hertz SP4 500 is a compact four channel car audio amplifier designed to add clean, configurable power where installation space is limited. It can operate in 4 , 3 , or 2 channel configurations, allowing it to drive a full speaker system, a front stage plus subwoofer, or bridged speakers or subwoofers. Its compact footprint makes it practical for motorcycles, under seat vehicle installations, and behind seat truck mounting locations. With 90 watts