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Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317
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Product Details
  • Brand NameLusya
  • CertificationNone
  • OriginCn (Origin)
  • Maximum Power Per ChannelNo Power
  • Model NumberA100Sspv2
  • PackageNo
  • Channels1
  • TypeBalance Preamp Board
Product Description
Golden Throat Preamp Audio Amplifier A100 PCB board
Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Two versions :     Upgrade board: PCB board is military-grade FR4 board, heavy gold, main circuit resistance is DALE resistance, power supply resistance is 718 resistance, rectifier diode is Amex MUR260 ultra-fast recovery diode, field tube is Taiwan product, transistor is imported from KEC Copper feet KTC3200GR, KTA1268GR (non-domestic iron feet).   Features:   Size: 18 cm long and 18 cm wide.       This board contains a Class A parallel regulated power supply, which can be directly connected to a transformer. The AC output of the transformer requires a four-wire output, the AC voltage can be 15V ~ 24V, and the transformer power is at least 30W.   The upgrade of Golden Throat A100 circuit is as follows:   1. The voltage of buffer stage and differential stage is canceled by 15V voltage regulator and switched to a parallel voltage regulator circuit, the cost is increased, the voltage is more stable, and the effect is higher.   2, the left and right channels are independently grounded, and left and right are isolated, further increasing the separation, 3, increasing the size of the main capacitor, compatible with 7.5mm and 10mm pitch capacitors.   4, increase the size of the rectifier diode and pin hole, you can choose a larger current diode for rectification,   5. The signal input and output adopt a four-wire format, and the left and right channel signal grounds are independent.    After connecting the transformer, first adjust the output voltage. The buffer voltage is ± 15V. The main voltage is recommended to be ± 18V to ± 24V. Repeat the adjustment several times until the voltage is stable. Others do not need to be adjusted, and the signal can work.   This board can also be used as a headphone amplifier. Adjusting the output stage resistance can drive headphones with different impedances. Package:  1pcs  PCB board

Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Notes about the kit:   All components include the PCB board, each kit sends a signal line, potentiometer board The film capacitor is RIFA or WIMA, or EVOX. The main filter electrolytic capacitor is German WE, the decoupling capacitor is a Nikon gold signature capacitor, the small capacitor is Philip silver film and silver mica, and the resistance is DALE. The field tube is 2SK170, 2SJ74 The pole tube is imported from Toshiba 2SC2240, 2SA970
Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

The PCB layout is as follows: two-channel ground wires are routed independently, one point is grounded, and the ground is double-sided
Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Important note: Components are subject to actual installation. Pictures are for reference only. 1. All components are imported components and are new products. Second-hand disassembly is not recommended.
2. All resistors must be installed overhead, because the ground is double-sided to prevent contact with the ground.   3. Repeatedly and carefully see the schematic diagram before installation, the components must not be installed incorrectly.   4. All triodes used must be paired. If different poles cannot be paired, at least they must be paired with the same poles. All field tubes must be paired with IDSS. If it is not possible, it will be difficult to adjust.   5. After washing the board, turn on the power again to prevent the bad consequences caused by solder debris.   6. After powering on, make the following adjustments according to the steps:   A, first adjust the main voltage. Because it is a parallel regulated power supply, wait a few minutes and adjust it several times until the voltage stabilizes to 24V.   B, the second step is to adjust the voltage of 15V, the operation is as above,   C, adjust the working current of the differential stage, the current of this part is about 1 to 2mA, that is, the voltage across the 2K resistor is about 2V to 4V,   D, adjust the output midpoint voltage, do not insert the op amp first, install it after adjustment, it is best to connect a 10K resistor between the output terminal and ground as a load, also divided into several times, adjust it to close to 0mV, plug in And measure the output midpoint voltage again, at this time it should be a few tenths of a millivolt.   The adjustment chart of each part is shown below:
Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Component value   Description Numbering Encapsulation Substitute value   Quantity     接插件     电源端子 两脚插座(5mm) AC1, AC2 (5mm)   2     散热器 散热器 H1, H2, H3, H4,'H5, H6 散热器B   6     插针   J1A, J1B, J2A, J2B 2.54mm   4     DIP8插座   IC1,IC2插座 2.54mm   2     电容     100uF/50V 尼康签字版 C1, C2, C11, C12, CB1, CB2, CB11, CB12, CBF2, CBF3, CF2, CF3 EC-2.54(5)-6(10)   12     2n2 WIMA C3, C4, CB3, CB4 (直插)5-3-7   4     33P 银膜电容 C5, C6, CB5, CB6 (直插)5-3-7 30P 4     104 薄膜电容 C7, C8, C9, C10, C314, C315, C401, C402, C403, C404, CB7, CB8, CB9, CB10, CS1, CS2, CS3, CSB1, CSB2, CSB3 (直插)5-3-7   20     220P 薄膜电容 C301, C302, C303, C304, C305, C306, C307, C308 (直插)5-3-7   8     3300uF 德国WE C309, C311, C312, C313 EC-10-25   4     10P 薄膜电容 CBF, CF (直插)5-3-7   2     100P 银膜电容 CBF1, CF1 (直插)5-3-7 82P 2     47uF 电解电容 CS7, CS9, CS24, CS25 EC-2.54-6   4     474 WIMA CS16, CS17, CS18, CS19, CS20, CS21 5-5-7mm   6     IC     OPA2134 dual Op IC1, IC2     2     晶体管     BYV26C 二极管 D301, D302, D303, D304, D305, D306, D307, D308 D3A二极管   8     15V 稳压管 DS1, DS3 1N4744   2     LED 发光二极管(蓝) LED1, LED2 LED2   2     C3200GR 三极管 Q1, Q2, Q9, Q10, Q11, Q12, Q20, Q21, Q22, Q23, Q23', Q305, Q306, Q309, Q313, Q314, QB1, QB2, QB9, QB10, QB11, QB12, QB20, QB21, QB22, QB23, QB23', QBF1, QF1,'Q303,Q402, Q407, Q408, Q411 TO-92G 2SCXXXX 34     2SK170   Q3, Q4, Q24, Q24', QB3, QB4, QB24, QB24', QBF2, QF2 JFET1   10     2SJ74   Q5, Q6, Q25, Q25', QB5, QB6, QB25, QB25', QBF3, QF3 JFET1   10     A1268   Q7, Q8, Q13, Q14, Q15, Q16, Q17, Q18, Q19, Q26, Q26', Q307, Q308, Q310, Q311, Q312, QB7, QB8, QB13, QB14, QB15, QB16, QB17, QB18, QB19, QB26, QB26', QBF4, QF4,'Q301,'Q401, Q409, Q410, Q412 TO-92G 2SAXXXX 34     2SA1930 TO-220三极管 Q302, Q315, Q403 TO-220L   3     2SC5171 TO-220三极管 Q304, Q316, Q404 TO-220L   3     2SB647 日立三极管 Q405 TO-92E   1     2SD667 日立三极管 Q406 TO-92E   1     Main circuit resistance     2K DALE RN55 R1, R3, R11, R13, R46, RB1, RB3, RB11, RB13, RB46, RBO1, RO1 0.25W   12     22K DALE RN55 R2, R12,RB2, RB12, RS4, RSB4 0.25W   6     75 DALE RN55 R4, R6, R8, R10, RB4, RB6, RB8, RB10 0.25W   8     120 DALE RN55 R7, RB7 0.25W   2     10 DALE RN5 R14, R17, R47, R48,RB14, RB17, RB47, RB48, RBF10, RBF11, RF10, RF11 0.25W   12     470 DALE RN55 R15, R16, R18, R20, R29, R31, R32, RB15, RB16, RB18, RB20, RB29, RB31, RB32 0.25W   14     24K DALE RN55 R19, R30, RB19, RB30 0.25W   4     220 DALE RN5 R21, R23, R26, R28, , RB21, RB23, RB26, RB28 0.25W   8     18K DALE RN5 R22, R27, RB22, RB27 0.25W   4     2K2 DALE RN55 R24, R25, RB24, RB25 0.25W   4     1K DALE RN5 R33, R38,  RB33, RB38,RS7, RS9 0.25W   6     5K1 DALE RN55 R34, R37, RB34, RB37 0.25W   4     12K DALE RN55 R35, R36, RB35, RB36 0.25W   4     182 DALE RN55 R39, RB39 0.25W   2     15K DALE RN5 R40, R41, R42, R43, RB40, RB41, RB42, RB43, RBF6, RBF7, RBF8, RBF9, RF6, RF7, RF8, RF9 0.25W   16     22 DALE RN55 R44, R44', R45, R45', , RB44, RB44', RB45, RB45', RBF4, RBF5, RF4, RF5 0.25W   12     47K DALE RN55 RBF, RF 0.25W   2     1M DALE RN55 RS1, RS2, RS3, RSB1, RSB2, RSB3 0.25W   6     10K DALE RN55 R5, R9, R-, RB5, RB9, RB-, RBF1, RBF2, RF1, RF2 0.25W   10     1 DALE RN55  RBF3, RF3     2     Power circuit resistance     16K 718电阻 R01, R02 0.25W   2     10 718电阻  R302, R303, R304, R305,  0.25W   4     22 718电阻 R301, R306, R321, R322 0.25W   4     220 718电阻 R313, R314, R315, R318 0.25W   4     7.5K 718电阻 R307, R308 0.25W   2     18K 718电阻 R309, R310,R319,R320 0.25W   4     2K7 718电阻 R316, R317 0.25W   2     1 718电阻 R323, R324, 0.25W   2     27 718电阻 R401, R402 0.25W   2     1K 718电阻 R407, R408, 0.25W   2     3.3K 718电阻 R405, R406 0.25W   2     22K 718电阻  R403, R404,  0.25W   2     33K 718电阻 R409, R410 0.25W   2     Adjustable resistance     500 精密可调 V1, VB1, VBR, VR 3296可调   4     2K 精密可调 R311, R312 3296可调   2     5K 精密可调 V401, V402 3296可调   2
Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

Lusya Golden Throat Preamp Audio A100 Upgrade HIFI PCB Amplifier Board A100SSPV2 T1317

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