Power Amp (Rotel 1075)(report pg 19 & 23)

tuktuk

若果以10-15k有parsound a51,Rotel 5ch .,Arcam ,ADCOM 大把選擇
pinkhung 發表於 2009-10-17 15:16

10-15k可以買到parsound a51?

lemonstar

Just checked on the website about the outlook and power rating,.. etc.
唔知街價要幾$呢


ADCOM (USA)
GFA-7605 and 7607
Multichannel Power Amplifier
•  125 watts x (5) 7 channels into 8 ohms
•  Power rig circuit topology
•  Gold Plated 5 way binding posts
•  Huge torriodial transformers
•  Power bandwidth 10 Hz –100kHz
•  12 volt trigger on circuit
•  Dimensions 5 x 17 x 14 inches
•  Unit weight: 42/48 lbs.




Arcam P777 (Germany):
P777 7 channels
7 x 150 watts per channel (8 ohms, 20Hz-20kHz, all channels driven)
•        7 x 230 watts per channel (4 ohms, 20Hz-20kHz, all channels driven)
•        Peak output current +/- 30amps per channel
•        Modular construction with seven independent and fully isolated channels
•        Four Sanken heavy duty bi-polar output transistors per channel
•        Advanced current feedback design with high slew rate and very low distortion at all audio frequencies
•        Predominantly aluminium chassis and casework for best sound quality
•        Comprehensive protection circuitry
o        -  DC offset protection
o        -  VI limiting on each output stage
o        -  Software controlled thermostatic fan
o        -  Over temperature protection
Inputs and Outputs
•        Balanced (XLR) input connections
•        Unbalanced (RCA) inputs with “loop through” output
•        12v Trigger (3.5mm mono jack) input for standby control



Rotel 1075
Model RMB-1075 Continuous Power Output
(20-20 kHz, <0.03%) 5x120 watts /ch / 8 ohms DIN Power Output
(1 kHz, 1%) 5x200 watts /ch / 4 ohms Total Harmonic Distortion
(20 Hz - 20 kHz, 8 ohms) 0.03% maximum cont. rated power
one-half rated power
one watt per channel
Intermodulation Distortion
(60 Hz: 7 kHz, 4:1) -
0.03%, maximum
0.03%, maximum
0.05%, maximum
0.03%, maximum Frequency Response 15Hz - 100kHz +0.5dB, -3dB Damping Factor
(20 - 20,000 Hz, 8 ohms) -
180 Signal to Noise Ratio (IHF A network) 116 dB Input Impedance/Sensitivity 1.0 V / 33 kOhms Power Requirements: 115 volts, 60 Hz (U.S. version)
230 Volts, 50 Hz (European version) Power Consumption: 800 Watts Dimensions (W x H x D): 430 x 188 x 385 mm
16.93" x 7.4" x 15.59" Weight (net): 17kg, 37.4 lbs.




Rotel 1565 (England)
Power Output
All channels driven 100 watts x 5/ch (20-20 kHz, 0.03% THD, 8 ohms)
200 watts x 5/ch (20-20 kHz, 0.03% THD, 4 ohms) THD (20-20,000Hz) 8 ohms, all channels driven < 0.03%
IM Distortion < 0.03% Damping Factor (8 ohms) 400 Gain 27.2 dB Input Sens. / Impedance 1.2 V / 8.3 k ohms Frequency Response (+/-1 dB) 10 - 80 kHz (+3dB) S/N Ratio (IHF A) 109 dB Power Consumption 280 Watts Dimensions (W x H x D) mm 431 x 99 x 339 mm Dimensions (W x H x D) in. 17 x 4 x 13 3/8 in Front Panel Height 2U / 88.1mm / 3 4/8 in Weight (net) 6.0kg / 13.23 lbs




Parasound A51
Continuous power output:
        250 watts RMS x 5, 20 Hz - 20 kHz, 8 Ω, all channels driven
        400 watts RMS x 5, 20 Hz - 20 kHz, 4 Ω, all channels driven
        Current capacity:
        60 amperes peak per channel
        Power bandwidth:
        5 Hz - 100 kHz, +0/-3 dB at 1 watt
        Total harmonic distortion:
        < 0.2 % at full power
        IM distortion: balanced 16 V rms
        < 0.04 %
        Slew rate:
        > 130 V/µsecond
        Dynamic headroom:
        > 1.5 dB
        Interchannel crosstalk:
        > 78 dB at 1 kHz;
        > 63 dB at 20 kHz
        Input sensitivity:
        1 V for 28.28 V, THX Reference Lev
        Input impedance:
        47 k Ω unbalanced; 94 k Ω balanced
        S/N ratio:
        112 dB, input shorted, IHF A-weighted
        Damping factor:
        > 1100 at 20 Hz
Voltage:
110V - 120V
Dimensions:
17-1/4" w x 7-5/8" h x 20" d, 7" h without feet
Net weight: 80 lb.

claero

parasound a51 $3xxxx , a52 below 15xxx, i used a23 (same as 52 but 2 channel)before , crystal clear high notes ,not bad but can't say very powerful , and rotel have thick voice but not that famous in hk , it have high cp ratio but the second hand market was bad . the new model i guess was class d now (not sure).

10bucks360

好彩你冇講mk大陸燦,呢度嗌交都似
pinkhung 發表於 2009-10-17 13:03

10bucks360

NuForce 有 3 ch, 5 ch, 7 ch, 細細部, 大大力........................
hkp1196 發表於 2009-10-17 13:17

有人身痕

hintel

my dream power amp 可惜冇

10bucks360

A51 MK有人話賣$@^xxx

hintel

昨天我去sun問都要成$##xxx

10bucks360

99分果邊有個CHING做影音工程, 可自行向佢問下A51價錢

alzard

想問點解打埋呢D暗號﹐又無版規話唔報得價