Bus Audio/Video system

[jschmidt417]

I drive a bus for the YMCA and it had a ac powered dvd player, amp, and tv on it. I switched to an in dash dvd/cd/mps am/fm radio with an output of 600 max watts. Once installed and the key in the accessories position (bus off) it sounded good. Driving down the road it is a different story. Once you have the need to increase the volume to overpower the noise of the engine running, the wind blowing at 70 miles, and the kids being kids the speakers sound like they are blown. The speakers on the bus are 8-40 watt 4 inch speakers mounted to the ceiling. I changed out on speaker with a 140 watt 4 inch, but it sounds the same with increased volume. I'm not sure what I need to do to make the movies that we watch be audible for the kids. Can anyone help?

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[IonRL205 10+ year member]

Do you have an amp on your speakers or are they running from the head unit?

 

[jschmidt417]

They are run straight from head unit.

 

[IonRL205 10+ year member]

What's the model # on the head unit? You may want to use an amplifier to power your speakers.

 

[keep_hope_alive Premium Member]

You need an external amp for the speakers. Then wire the speakers in series/parallel to obtain a final impedance load that is compatible with the amp.