Description: Please note before you buy: Products as shown in my main picture, one channel price. so if you need stereo channels, please buy 2pcs. it needs to solder by yourself .thank you! Features: Model:JLH1969 Name: Amplifier Board 1. Double-sided , thick copper PCB. This one is doubled-sided so the copper pad durability is greatly enhanced by plated-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 and heavy aluminum plates already mounted on the board ( as in the pictures) for easy to interface with heatsink. Specification: 1.Operating voltage: DC 12V-35V (corresponding to 9-26V transformer) 2.Output sound power: approx 10-15W 3.It can be pushed 3-8 inches, 120 watts of power bookshelf box, full-range boxes. Sensitivity to be higher than 83db. 4. Adjustable quiescent current between 0.3-1.8A, recommended 1.2 Ann (radiators need more than 0.7 kg). Adjust the midpoint / quiescent current method: midpoint: 1. Select the universal table’s 10A ;, 2. black pen -GND, red lead -TP1; 3. Adjust the adjustable resistance KT1 (supply voltage 1/2) Current: 1. Select universal table’s 10A, 2. Loosen the screws of VCC supply, pull out the wires, 3. One pen connected to the pull out wire, the other pen connected to the screw of terminals, which is a measure of the current (equivalent to remove the VCC line of 1969 board , replaced with an ammeter), 4. Adjust the adjustable resistor KT2 changing the current NOTE:the 2N3055 is ST or Motorola is pre-owneded in good condition. maybe the capacitor appearance is scratched,but all in good condition and unused. NOTE:if you purchased 2 of this item i will send you a pair of JLH 1969(L+R Channel)if you purchased 1 pic i will send you the L or R channel random. Package includes: 1pcs JLH 1969 Amplifier Assembled Board OR JLH 1969 Amplifier DIY Kit
Price: 18.89 USD
Location: GUANGZHOU
End Time: 2023-12-30T02:57:23.000Z
Shipping Cost: 0 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Number of Channels: 1
Amplifier Class: A
Country/Region of Manufacture: China
Type: Power Amplifier
Features: Double-sided , thick copper PCB
Color: As showen
MPN: Dose not apply
Power: approx 10-15W
Brand: Unbranded
Available Variations
Color: DIY Kit
Price: 18.89 USD
Available Quantity: 19
Quantity Sold: 7
Color: Assembled board
Price: 19.12 USD
Available Quantity: 20
Quantity Sold: 7
