My legacy red series 2 la770

Unfortunately, the amp is only 2 ohm stable, so the best option is to connect each subs voice coils in parallel (2 ohms) and connect the subs in series (4 ohms).

Make sure you have a good ground connection. The ground wire should be solidly connected to the vehicle chassis in a paint-free location. If the ground is connected badly, the protect light will come on.

That all depends on the wattage of the subs. also the independance of the subs. If your amp is 1400 watt, maximum you want is 2 600watt subs. if your subs are higher you will blow your amp eventually as your amp isnt powerful enough to pump out to that level.You should never have your amp fully turned up to max, 80% is perfect and will not make your amp blow. Hense why you want your subs less than the max output of your amp.

if the protect light is still on with all speakers disconected then you have overloaded the internal ic and blown it beyound its ability to reset

sorry

Well here is the stats

2000watts 2-channel
Output Powers
• 500W (RMS) x 2CH (2 Ohm) 500rms each channel
• 600 (RMS) x 2CH (4 Ohm) 300rms each channel
• 1000W (RMS) x 1CH (4 Ohm)

If your talking about price it runs about...

$100-130

one sub per channel you can not brige this amp in to a 4ohm load because your amp is going to see 2 ohms and that amp is not 1 ohm stabel

do u have an crossover

never attemp to bridge your amps specially this type of amps. this are too very complicated. you may blow your amp if you will attempt it again.

u use the first live out put and the last out put wich should b a negative whick will make the amp run all its power into the sub

Im sorry to tell you, that if only one side is working, you most likly have an open driver transistor or input device. If the one side had a shorted output then the whole unit would go into shutdown. The fact that the unit still works is a good sign. The correct way to test an amp is with some equipment most folks do not have, and that means a trip to your local good audio repair facility. They will need to doi a bench check on the amp with load resistors and a tone generator. If the amp preforms good on the bench, then you should start looking for bad speakers and or pinched wiring,loose connections or bad speakers. Let us know what happens? Good Luck