Problema amplificator

[Guest RazvanNicula]

Va salut, am un amplificator :

 

 

BW-4120C
Power source: 220-240V AC 50Hz
Power consumption: 240W
Output: 120W
Frequency response: 100Hz-16000Hz± 3dB
DISTORTION(THD): <0.3% at 1KHz, 1/3 rated output power
Output: 4-16Ω , 70V, 100Vr
Aux Output: 775mV/10KΩ
Input: Aux 1, 2: 250mV/10kΩ MIC1(unbalance), MIC2, 3(Balance): 3mV/600 Ω
S/N ratio: Mic 1, 2, 3>66dB Aux 1, 2>70dB
Tone control: Bass: ± 10dB at 10KHz Treble: ± 10dB at 10KHz
Protection: AC Fuse, DC Voltage, Overload and short circuit
Muting function: 0-30dB
Dimensions(W*H*D): 430*88*370mm
Net weight: 14kg

 

La acest amplificator am legat 2 boxe care au cate 3 difuzoare, pe spatele incintei scrie ca are 200w, insa pe spatele difuzoarelor nu scrie nimic.

Functioneaza perfect, insa cand vreau sa dau mai tare, amplificatorul intra in protectie si se aude un piuit.

Mentionez ca in incinta boxelor nu am gasit nici un filtru, se poate sa fie de la chestia asta?