A few of these work together while others are output supply units
Frequency Range: 5 - 50 000 Hz (+0 dB, -1 dB).
Negative type of grounding system has been used for both models.
The load impedance that is suggested is from 2 to 8 ohms.
It could damage the amplifier.
The special battery lead with a red color supplied should be connected with the positive terminal of the battery directly.
Make sure wires are tied down and installed away from sharp edges to prevent shorting out. Always connect the ground lead to a solid metal part of the vehicle body.