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Willsenton R8 KT88 45W+45W Vacuum Tube Integrated Amplifier Push-pull Power Amplifier (Black)
$1,621.96
Willsenton R8 KT88 45W+45W Vacuum Tube Integrated Amplifier Push-pull Power Amplifier (Silver)
$1,621.96
Willsenton R-800i Single Ended Class A Amplifier Vacuum Tube Integrated Amplifier 50W+50W 300B + 805
$2,912.97
TDA2030A Amplifier Board 2.1 Channel w/ Bass Differential BTL Dual Tube Amp Kits
Features
- This board kits are for professional players, you need to assemble them by yourself
Main components function
A. potentiometer functions from left to right are:
(1). Bass upper limit frequency adjustment, 60 to 200HZ.
(2). Bass volume adjustment.
(3). The left and right bass control.
(4). The left and right treble control.
(5). The main volume adjustment
B. op amp function from left to right are:
(1). Single ended to balance bass (single ended to differential).
(2). Bass signal amplification and frequency compensation.
(3) the left channel signal amplification and buffer.
(4) the right channel signal amplification and buffer.
C.4PCS TDA2030 power amplifier IC:
(1). The left two connected to a differential amplifier in the form of BTL, for bass amplification.
(2). The two were responsible for the left and right channel power amplifier.
Terminals from left to right are:
(1). The right and left channel audio signal input connected to the computer,.MP3.MP4 and other audio equipment.
(2). Bass output, 30W-80W subwoofer, impedance is appropriate in Europe and more than 8, otherwise serious fever.
(3). The left channel output, then the left 15W-40W speakers, 4-8 in Europe for appropriate impedance.
(4). The right channel output, then the right 15W-40W speakers, 4-8 in Europe for appropriate impedance.
Terminal PCB on the lower right corner is the power input. Can be connected with double 9V double 12.5V alternating current, can also be connected with the double
12V to DC double 18V. Power requirements are more than 50W, the terminal intermediate public access terminal (GND).
PCB size: length 161m* width 90mm radiator with machine size: length 161mm* width 115mm* high 45mm
Radiator size: length 161mm* width 25mm* high 45mm potentiometer spacing: 24.4mm
In order to prevent tuning a rustle and life are only consider 5 potentiometer using machine production step type potentiometer distribution 5 beautiful knob. Design a UPC1237 speaker protection circuit, switch output DC protection and suppression of loudspeaker shock, make it more safe.
PCB double line. The star ground, the channel power and signal separation, at one point in the summary of the main filter capacitor.
