Mutchus

At this time I present a series of amplifiers that use IC TDA2030, but this series is equipped with a tone control. Tone controls include Bass, Treebel, and Volume. Power amplifier and tone control has been put together in a single PCB. As well as its power supply circuit was also used as one with the power amp, and tone control. Making it easier in the installation and will look neat. Schematics Layout PCB PCB design This amplifier is a mono amplifier type, can be modif for guitar amplifiers. If not coupled amplifier (mic preamp) then you must deactivated potensio treble and bass, why? because if not using a mic preamp and still maintain potensio treble and bass sound input (input) from the guitar will not or the maximum discharge is not tight on the speakers. So you must deactivated a way to decide which directly connected capacitor with the tone control circuit, and capacitor were connected directly to potensio volume and input jack.

This circuit is a circuit diagram preamp and tone controls are combined in a single series. Series preamp and tone controls are using the transistor as a control. In the picture below P1 to control the volume level, to control the level of P2 and P3 for Bass control Treble level. This circuit is a circuit diagram mono channel, built a similar circuit to make this circuit stereo. The following is a schematic drawing: Component: R1__________220K R2__________100K R3__________2K7 R4 R5_______8K2 R6__________4K7 R7, R8, R13___2K2 R9__________2M2 R10, R11_____47K R12_________33K R14_________470R R15_________10K R16_________3K3 C1, C2, C9____470nF 63V C3, C4_______47nF 63V C5, C6_______6n8 63V C7__________10?F 63V C8, C10______22?F 25V C11_________470?F 25V Q1, Q3_______BC550C Low noise NPN 45V 100mA High gain TransistorsQ2__________2N3819 General-purpose N-Channel FET

Description A difficult problem in the design of conventional stereo tone controls is obtaining synchronous travel of the potentiometers. Even a slight error in synchrony can cause phase and amplitude differences between the two channels. Moreover, linear potentiometers are often used in such controls, and these give rise to unequal performance by human hearing. Special potentiometers that counter these difficulties are normally hard to obtain in retail shops. A good alternative is a control based on a rotary switch and a discrete potential divider. The problem with this that for good tone control more than six steps are needed, and switches for this are also not readily available. Fortunately, electronic circuits can remove these difficulties.   Circuit Diagram: The analogue selectors used may be driven by mechanical switches, standard logic circuit or a microcontroller. The selectors used in the present circuit are Type SSM2404 versions from Analogue Devices, which switch noisele...