system help

[Syris]

I just got my

2 Fusion Encounter 12's
-Power Handling – 400 Watts
-Voice Coil – 2” Kapton SVC
-Impedance – 4 Ohms
-Free Space Resonance (Fs) – 27Hz
-Efficiency (1w/1M) – 91dB
-Frequency Response – 23Hz * 3kHz

With

1 Sony XM-d400p5
-Channel Configuration 1 mono
-Low Pass Filter (variable) 50-300 Hz
-MOSFET Power supply
-Max. Ouput Power : 1 x 800W at 2 ohm
-Rated Ouput Power : 1 x 400W at 2 ohm

My problem is that i can keep them playing only at low levels of the cd player, and when i start turning the volume up the subwoofers go out and the amp goes into protection mode. The cd player keeps playing and doesnt skip a beat although without the subwoofers going. If I turn off the unit and turn it back on the subwoofers will begin playing again once I turn my volume to that level off where they stop playing before.

I've checked my ground and checked it again and it is fine.

[hot dayam mk3]

your amp goes into overload.... its prolly heating up and cant take the punch.

[Cravin Boost]

are the subs setup in serial or paralell or do they each each have their own channel?

Serial would = ~8 ohms
Paralell would = ~2 ohms which equils driveing the amp very very hard.

[Syris]

ive had them setup in both and still getting same results

[CRE]

-Max. Ouput Power : 1 x 800W at 2 ohm
-Rated Ouput Power : 1 x 400W at 2 ohm


So doesn't that equal only 50W at 8Ω when their wired in series? What's the RMS rating of the subs? You're definitely putting way too much of a load on the amp. With the two subs in parallel (2Ω) they'd still probably need (and try to take) more than the ~200W they're each seeing.

Have you tried running just one sub?