This price is the price of two power amplifier boards, dual-channel. The kit requires your own welding tools to assemble. The finished board has been welded and tested. The finished board is recommended.
A version kit (standard version): It is produced by PHILIPS, and the output stage adopts imported KTB817, KTD1047;
A version of the finished board (standard version): It is produced by PHILIPS, and the output stage adopts imported KTB817, KTD1047;
B version kit (deluxe version): High-power tube adopts Sanken 2SA1295, 2SC3264 imported original;
B version finished board (deluxe version): High-power tube adopts Sanken 2SA1295, 2SC3264 imported original;
C version kit: the power tube adopts ONSEMI 0302/0281;
C finished board: the power tube adopts ONSEMI 0302/0281.
The MX50 SE version is a new design version based on the classic MX50 fifth version with thousands of users.
This MX50 L series AMP has been tested by a variety of instruments for excellent performance. The imitation MX50 or music fax XX50 circulated on the Internet have different components and PCB versions. Those who purchase please pay attention to the comparison. The current version of MX50 is V7 (MX50SE).
A brief description of version A:
Use imported Panasonic PANASONIC MKP input coupling capacitors, lower distortion, better control and resolution. Single differential input, single-ended voltage amplifier stage, three-stage inverted Darlington output stage.
*The output stage is imported KTB817, KTD1047;
*ST, CBB capacitor produced by EVOX;
* KEMET, TDK&x27;s monolithic capacitors;
*Use imported Panasonic PANASONIC MKP input coupling capacitors;
*All resistors are made of original genuine metal film resistor copper feet;
*Support voltage DC: + -15V to + -45V;
*AC dual 12V- can be obtained after dual 32V rectification;
*Power 15-100W, 8 ohms;
*PCB area 76*73 mm, version number V7 (MX50SE).
Installation note: 649 669 must be installed on the matching radiator.
No adjustment is required after installation. The quiescent current is about 30MA per tube. This version does not require flying wires. Only need to install two big tubes on the radiator.
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Brief description of version B:
The luxury version of the finished board is matched with the original imported Sanken, the highest-end model of high-power tube, LAPT series 2SA1295, 2SC3264.
Schematic diagram and wiring diagram:
Test data: Test equipment: Audio Precision 2
Frequency response = 20HZ-25K HZ -0.2DB
THD+N=0.002% 20hz-20KHZ 10W RMS 8 OHM
Test chart, test equipment: DSCOPE SERIES 3
test result: frequency 20HZ- 20 K HZ - 0.2 DB
24000 HZ FFT FOR 10W OUTPUT: