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1Pc Jlh 1969 Class A Amplifier Board Pcb Mot/2N3055 Diy Kits

1Pc Jlh 1969 Class A Amplifier Board  Pcb Mot/2N3055 Diy Kits
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Product Details
  • Brand NameAiyima
  • Model NumberJlh 1969
Product Description
1416033537631515 1969 audio DIY US $ 5.50 /piece US $ 3.99 /piece US $ 7.99 /piece US $ 8.99 /piece US $ 9.30 /piece US $ 19.99 /piece US $ 4.50 /piece US $ 8.00 /piece US $ 16.00 /piece Deacription:
Note:The MOT/2N3055 is ued,but work well! thank you! Please note before you buy: Products as shown in my main picture, one channel price. so if you need stereo channels, please you buy 2pcs. thank you! This is Diy Kit, it is adjusted and tested amplifier boards of the classic JLH( John-Linsey Hood) 1969 class A amplifier. While JLH 1969 is a simple design, it is still one of the best transistor amplifier. This incarnation features : 1. Double-sided , thick copper PCB. Most of the ILH 1969 boards in the market are single-sided. This one is doubled-sided so the copper pad durability is greatly enhanced by lalated-through hole ( PTH) process. 2.Hermetically sealed metal casing transistors used on both small signal and power stage. 3.High quality electrolytic capacitors. 4.High quality solder with silver content is used in soldering. 5.ERO film capacitors for audio coupling. 6.Thick & heavy aluminum plates already mounted on the board( as in the pictures) for easy to interface with heatsink. Material at a glance: * Shen Jin-sided PCB, gold, gold Balloon * lmport

black gold fever high frequency low-impedance capacitor * Import pale blue ruby capacitance * lmport the new

/ 2N1711 * lmport the new

/ 2N2907 * Disassemble MOT / 2N3055 * The new ERO green film coupling capacitors * New Taiwan LELON axial audio output capacitance * Panasonic foot blister chunill low drift resistor error thousandth, sweet vocals * Customized industrial grade aluminum angle, fast heat transfer, corner store to buy an aluminum alloy aluminum not generally comparable * Lead-free solder containing silver bass / midrange has lifting effect Specifications: Operating voltage: DC 12V-35V (corresponding to 9-26V transformer) Output sound power: 10-15W or so. It can be pushed 3-8 inches, 120 watts of power bookshelf box, full-range boxes. Sensitivity to be higher than 83db. Board size: with angle aluminum long 10cm, width 8cm, height 3.8cm Adjustable between quiescent current 0.3—1.8A, recommended 1.2A (radiators need more than 0. 7 kg, it is recommended to listen to the sound quality, I feel satisfied to buy aluminum heat sink chassis, because to buy a separate radiator is not cheap). The midpoint of their own adjustments / quiescent current method: Tune midpoint: universal table hit voltage profile, black pen then the red pen then GND TP1 test holes (TP1 at the output capacitor positive) board, the adjustable resistance KT1 it is 1/2 of the supply voltage. Modulated current: 10A universal table hit stalls, a pen then positive power supply, the other one pen then VCC terminal, adjust the adjustable resistance KT2 change the current board size. Package listing . 1pc x JLH 1969 class A amplifier Board Diy Kit.
1pc JLH 1969 class A amplifier Board  PCB MOT/2N3055 Diy Kits



1pc JLH 1969 class A amplifier Board  PCB MOT/2N3055 Diy Kits

1pc JLH 1969 class A amplifier Board  PCB MOT/2N3055 Diy Kits

1pc JLH 1969 class A amplifier Board  PCB MOT/2N3055 Diy Kits

1pc JLH 1969 class A amplifier Board  PCB MOT/2N3055 Diy Kits

1pc JLH 1969 class A amplifier Board  PCB MOT/2N3055 Diy Kits

1pc JLH 1969 class A amplifier Board  PCB MOT/2N3055 Diy Kits

1pc JLH 1969 class A amplifier Board  PCB MOT/2N3055 Diy Kits

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