forumpoweraudio.ro

Buna,
As dori sa achizitionez un amplificator pe care sa il folosesc pe un subwoofer de 800w rms pe un canal, si pe celalalt canal pe 2 boxe EV ZX5. Dupa destule cautari am ajuns la aceste 3 modele, dar nu am posibilitatea sa le testez, de aceea as dori o recomandare, in privinta acestor 3 amplificatoare. Crown Pulse 1100 ar fi o varianta rezonabila pentru mine, dar nu stiu cum se comporta la variatiile de curent, si am inteles ca ar trebui modat. QSC RMX 4050HD, as avea dubii daca sa il aleg, deoarece din cate am citit, RMX este o serie low cost de la QSC. Despre C-Audio SRX 3801 nu am gasit alte detalii decat ca scoate 2x800w pe 8 ohmi si 2x1200w pe 4 ohmi, dar nu am gasit nimic despre ce protectii are, sau alte date de catalog.

Am atasat un link cu specificatiile pentru QSC RMX 4050HD
http://www.qscaudio.com/products/amps/rmx/rmx4050.htm

Si specificatiile pentru Crown:

Stereo
Measured per channel, both channels driven at 1kHz to no more than 0.1% THD+N
8 ohms 700W rms
4 ohms 1100W rms
2 ohms 1500W rms*
* Note: 2 Ohm spec is at 1% THD
Bridged Mono
16 ohms 1200W rms
8 ohms 2200W rms
4 ohms 3000W rms*
* Note: 4 Ohm bridged spec is at 1% THD
Input Sensitivity +1dBu for full output
Input Impedance 20 kohm
Input Connectors 1/4-inch TRS balanced phone jack, removable terminal block,
male and female XLR
Distortion <0.008% THD, 1kHz, 1dB below clip, 22kHz measurement bandwidth
Frequency Response 20Hz to 20kHz, +0/-0.2dB; <2Hz to >120kHz +0/-3dB
Controls Power switch, bridge mode switch, indented level controls (these may be made
tamper-proof)
Indicators AC Present, Operate, Signal, Bridge, Clip, Temp., Fault
Protection Microprocessor supervised: Over-temperature, DC on outputs, output stage overload,
inrush current surge, power fail and brownout
Noise <-100dB ref full output 20Hz - 20kHz measurement bandwidth
Slew Rate >50 V/microsecond
Damping Factor >200 ref 8 ohm
Output Connectors Binding post and Speakon®
AC Power 230 volts AC nominal, 3000VA, all channels driven
Dimensions 3.5" (89mm) x 18.2" (460mm) x 19" (483mm)
Weight 24lbs (11kg)

Ti-as recomanda QSC-ul , ar fi cel mai rezistent dintre toate, pe locul 2 Crown, iar C-Audio pe 3, datorita finalilor foarte scumpi si greu de gasit.

Multumesc de raspuns, Leco.
Cred ca ma voi orienta catre crown, deoarece este usor, sper sa nu fie probleme datorita sursei, in caz ca tensiunea de alimentare este diferita de 230v.