2PCS KSA80 Field Effect Tube Class A Power Amplifier Board J162 K1058
$338.28
Shipping:Standard Shipping about 10-25 business days
Secure Payment:Paypal,VISA,MasterCard
Features
1. Use original J162/K1058 field effect tube bile taste tube, MJE15032/MJE15033, MJE340/MJE350.
2. The capacitor between coupling stages adopts 2.2UF WIMA capacitor imported from Germany, with natural sound and wide sound field
3. The resistance uses five-ring metal resistors, and the main circuit uses five-ring metal film resistors with an accuracy of ÷1% to ensure a good signal-to-noise ratio of the whole machine.
4. The PCB adopts 1.6mm thick double-sided board, 2.0 oz copper thickness, and full tinning process to ensure good passing performance of large and small currents. First-class PCB quality.
5. This board uses the current advanced C1237 speaker protection circuit, which effectively eliminates the impact sound of turning on and off and the DC output protection function, making your speakers safer.
6. The wiring layout of the whole circuit board is quite rigorous and reasonable, and the whole PCB wiring adopts one-point grounding method. The power amplifier board works stably and reliably, with large output power; the sound is beautiful and round, and the sound field is open. It has a strong stereo effect, stable and powerful low frequency, excellent signal-to-noise ratio, wide dynamic range; clear details, excellent transient response, and can play all kinds of music with ease, and has a very good performance in the home environment.
Basic parameter
1. Power supply parameters:one set:DC +-40V (AC:transformer 300W double 28V, need to add rectifier board)
The other group:single AC15V (note:each board is powered by a single AC15V power supply, that is, one board uses a single AC15V power supply)
2. The power amplifier board can use master-slave integrated power supply. When the master-slave integrated power supply, each channel uses 26-28V voltage and 6-8A current. The official recommendation is DC 70V, so our maximum working voltage is not more than 80V, which is plus or minus 40V. . That is, the transformer outputs 26-28V AC. When the master and slave are powered separately, the current amplification part adopts 26-28V, and the voltage amplification adopts 26 to 30V transformer voltage
3. Class A 80W, measured under 4 ohm load
4. Speaker impedance:4-8 ohms.
5. This circuit is easy to debug, just adjust the quiescent current, string a multimeter on the positive pole, set the multimeter to the 10A or 20A position, adjust the potentiometer VR1 clockwise to adjust the current to 1.5A, this board has no temperature No need to adjust repeatedly. This adjustment is based on the recommended radiator size adjustment parameters in this article. If the radiator is too large or too small, the debugging will be changed. If the radiator is relatively large, the maximum quiescent current should not exceed 2A. If the radiator is too small, the temperature of the radiator should not exceed 60 degrees. When any point is reached, the quiescent current must be reduced to ensure safety.
6. Radiator requirements:350 X 150 X 50 (length. width. tooth height) recommended above 2KG
7. The size of the board with the radiator:328*120MM
8. Weight:0.65KG+0.65KG
Package included
2 x Power Amplifier Board
Weight | 1.39 kg |
---|
Customers Also Viewed
20Pcs 5V To 3.3V DC-DC AMS1117 800MA Step Down Power Supply Buck Module
$16.24Power Supply ModuleAdd to cart20Pcs 5V To 3.3V DC-DC AMS1117 800MA Step-Down Power Supply Buck ModuleFeaturesSize:8.6 x 12.33 mmInput voltage:DC 4.2 V – 10 VOutput:3.3 V, 800 mANote1.Boost modules or buck module indicate the operating voltage, Please do not exceed operating voltage, or it will be damaged easily!2.Boost module output voltage can only be greater than or equal to …
20Pcs 5V To 3.3V DC-DC AMS1117 800MA Step Down Power Supply Buck ModuleRead More
XD-37 12V 72W Electronic Semiconductor Refrigeration DIY Air Cooling System Small Air Conditioning
$35.52Electronic Accessories & SuppliesAdd to cartFeatures1. Semiconductor coolers are a form of solid state cooling that incorporates both semiconductor technologies and electronic assembly techniques.2. Application:Fish tank cooling, computer water cooling, circulating water cooling, cooling equipment, etc.3. Use to Connect the pump and the power supply.4. Diy kits Thermoelectric Peltier refrigeration cooling system.Fast cooling, outstanding effect.5. Simple operation, strong practicability.DescriptionsNo noise, …
5pcs 2.4G NF-04 Wireless SPI Module BK2425 250k~2Mbps Transparent Transmission Receiver for Doorbell Remote Control Switch
$11.42Smart ModuleAdd to cartIntroductionNF-04 is a 2.4G wireless module with small size and on-board antenna. It has a high airspeed (up to 2Mbps), SPI interface, and a pure hardware module. It has high stability, high cost performance and good spectrum test characteristics. , small size, using all industrial grade components.NF-04 can be widely used in various Internet of …
10pcs Mini 2A DC DC Buck Converter 3.3-5.5V to 3.3V Module Step Down Voltage Regulator Module
$30.16Boost & Buck ModuleAdd to cartDescriptionINPUT 3.5V/1.4A; OUTPUT 3.3V/1.5AINPUT 3.7V/1.89A; OUTPUT 3.3V/2AINPUT 4.2V/1.67A; OUTPUT 3.3V/2AINPUT 4.5V/1.46A; OUTPUT 3.3V/2AINPUT 5V/1.4A; OUTPUT 3.3V/2A Input voltage 3.3-5.5V, output 3.3V (deviation ±2.0%)Long time maximum output current 1.8AShort time maximum output current 2.2AUp to 97% efficiency(@4.2V to 3.3V/500MA)Low Quiescent Current:20uAOvertemperature shutdown, input under-voltage protection, External Soft start, and short circuit protection. DC-DC Buck Step-down module …
10Pcs 10ml Metal Needle Empty Plastic Bottle Shisha E Cig Liquid Dropper
$10.80Lab ChemicalsAdd to cartSpecificationsMaterial:PECapacity:10mlSize:20X77mm / 0.79X3.0 inchNeedle Size:Inner Diameter =0.8mm, Outer Diameter =1.2mm, Length=12mmQuantity:10 pcsFeatures1. 10ml empty plastic bottle with metal needle2. Metal needle design,durable and easy to use3. Ideal for storing E cig liquid,solvents, light oils , eye drops, saline, etc.Package included10 X 10ml Empty Plastic Bottle With Metal Needle
Reviews
There are no reviews yet.