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
3Pcs NodeMcu Lua WIFI internet Things Development Board Based ESP8266 CP2102 Wireless Module
$33.62Smart ModuleAdd to cartDescriptionMaterial:Experimental Board + Mixed AlloyColor:BlackChip Module:CP2102Working Temperature:-40 → ~ +125 →Power Input:4.5V ~ 9V (10VMAX), USB-poweredDrive Type:Dual high-power H-bridge driverCurrent:continuous transmission ≈70mA (200mA MAX)StandbySize:(L)X(W)4.8X2.5cm/1.89inchX0.98inch(appr.)FeaturesA great set of tools to develop ESP8266.ESP8266 has IO Pin.ESP8266 full IO mouth leads directly download without resetting.Open-source, interactive, programmable, low cost, simple, smart, WI-FI enabled.Greatly speed up your IOT application …
3pcs 500W Thyristor Electronic Regulator Accessaries Dimming Speed Regulation with Switch Temperature Adjustment Knob Module
$13.41Motor PWM Speed ControllerAdd to cartSpecificationsPCB board size:3.2CM*3.3CMRated power:P=UI; 500W=220V*2.27AModel:500W dimming governor;Rated power:500W;Suitable for dimming speed control of AC motors, lamps, etc. above 100W and below 500W;NoteThis module is connected to the AC voltage of 220V, so be sure to pay attention to safety when debugging, to prevent the occurrence of electric shock accidents, the store is not responsible for …
2 in 1 Folding Digital LCD Angle Finder Ruler Stainless Steel Ruler 360 Degree Protractor
$42.51Laboratory Thermostatic DevicesAdd to cartSpecificationsMaterial:Stainless Steel + PlasticSize Range:0-300mmMeasuring Range:0-360°Resolution:0.05°Accuracy:±0.3°Repeatability:0.05°Battery:1 * 3V CR2032 Lithium Battery (Built-in)Features ACCURATE & Fast:Calculating angles quickly and accurately, digital display clearly TWO SCALE DISPLAY:Both measure the angle and length, metric and imperial scale 360° MEASUREMENT RANGE:Stable locking function can lock the measurement at any angle INTELLIGENT & SAVE POWER:Automatically shut down after 6 minutes …
2 in 1 Folding Digital LCD Angle Finder Ruler Stainless Steel Ruler 360 Degree ProtractorRead More
WangDaTao TEA5767 Radio DIY Kit FM Digital Radio Electronic DIY Soldering Kit
$43.73DIY Electronic KitsAdd to cartDescriptionCircuit board size:7.7CMX6.1CM;Shell size:8.4cm*7.6CM*5.5CMWorking voltage:DC 5V (positive inside DC seat)Frequency modulation range:87MHZ-108MHZ;FM button:press the button once to 0.1MHZ, long press the FM button to continuously add and subtract;Weight:265GFunction:digital display frequency function, power off memory function, power saving function;Power-off memory function:After turning off the power, power on again to play the radio station before the power-off.Power …
WangDaTao TEA5767 Radio DIY Kit FM Digital Radio Electronic DIY Soldering KitRead More
LILYGO TTGO T-Watch Sensor Development Kit STEM Programming Educational Sensor Module Multiple Function Sensor
$216.66Smart ModuleAdd to cartSize ConversionInchesCentimetersPlease according to your own measurements to choose your suitable size. The tags inside the items will show in our Asian (Type) size.More informationhttps://t-watch-document-en.readthedocs.io/en/latest/introduction/index.htmlhttps://github.com/Xinyuan-LilyGO/TTGO_TWatch_LibraryHardware SpecificationsChipset:ESP32, dual-core MCU, PMU power managementFLASH:QSPI flash 16MB / PSRAM 8MBSRAM:520 kB SRAMButton:power key, IO36Extended function:Reference enhanced version and sensor kitUSB to TTL:CP2104Modular interface:UART, SPI, SDIO, I2C, LED PWM, PWM, …
CCM5D DC 6V-30V 6A DC Motor Speed Controller LED Display PWM Variable Speed Regulator with Shell
$17.48Motor PWM Speed ControllerAdd to cartFeatures• CCM5D DC Motor Speed Regulator controls the speed of a DC motor by adjusting Pulse-Width-Modulated (PWM). • Large 0.56 inch 3-digit LED display numbers allow viewing under the most adverse conditions.• The display range of 3-digit LED display is “000 Inch-“100 Inch. ( For example, displayed “60 Inch, it means that the PWM output …
Clear BorosilicateGlass Pipe Detachable Glass Pipe Bottle Glassware
$73.55Laboratory BottleAdd to cartDescriptionTransparent Detachable Pipe Bottle for Eliminating Unwanted Odors and HarmSpecificationColor:ClearJoint Diameter:14 mmHeight:355 mm/14inchMaterial:High Borosilicate GlassFeatures1. Convenient to carry.2. Attractive appearance.3. Reusable and easy to clean.4. Help eliminate unwanted odors from your finger tips.5. Made from borosilicate glass for the smoking experience.6. Allow you to enjoy the full flavor of your smoke while reducing the tar …
Clear BorosilicateGlass Pipe Detachable Glass Pipe Bottle GlasswareRead More
Reviews
There are no reviews yet.