View Full Version : Bridging HU & where to put amps
21-08-02, 09:05 PM
heys guys, dunno if these q's are simple but i'm a beginer is this.
Can a Head Unit with 4 outputs (say 4x50) be bridged like an amp and get say 2x100.
Also i've worked out by people saying that placing an amp upside down is bad, but what about on it's side. Is this ok or should they be placed as flat as posible
21-08-02, 09:26 PM
No, head units cannot be bridged. They already ARE bridged inside the integrated amplifier IC that powers all four speakers. You would get around 6-7W RMS if the head unit didnt feature a bridged amplifier. Bridging gives ALL head units no more than 25W RMS.
Placing an amplifier upside down is bad if you have no ventilation around it. Simply place a 12v computer power supply fan next to the heatsink if you put the amplifier upside down to help radiate the heat away and hook the fan to the remote amplifier start wire from the head unit.
28-08-02, 03:14 PM
Do not bridge the HU there are only veyr few HUs that can take being bridged. 99% will just blow a channel.
And either on the side or topside up is best for amps because most have no fans and require passive cooling which takes quite a bit of designing to get right.
But if you do put it upside just do as already suggested place a 12v computer fan. But try to avoid it.
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