ElectroSuite.com – Parametric Audio Equalizer. A graphic equaliser has only one control per band: the gain. A parametric equaliser has 3 controls: gain, frequency and width.
ElectroSuite.com – BC547 Dynamic Microphone Amplifier.
ElectroSuite.com – LM387 Head PreAmplifier. This is LM387 Head PreAmplifier signal using IC LM387.
LM387 Head PreAmplifier – dwihartono.8m.net
ElectroSuite.com – 3 Band Equalizer using IC TL072 and IC NE5532. A classic circuit of regulation of tone of three way, with which we can regulate low, mid and high frequencies, of acoustic signal.
3 Band Equalizer using IC TL072 and IC NE5532 – users.otenet.gr
ElectroSuite.com – 100W Guitar Amplifier Mk II.
ElectroSuite.com – ATMEGA168 Stereo Audio Switch LAN Controlled. Switching between speakers and headphones on PC without having to actually get up and mess around in the rats nest of wire’s behind it.
This is Simple Audio Car Noise Limiter electro suite. Noise that caused by the ignition car system could be reduced by this simple electro suite. The input of this electro suite come from the output of head unit like tape player of CD player, and then the output line of this electro suite is given to the input of power amplifier that used.
The filter of this Simple Audio Car Noise Limiter electro suite, set in frequency range of 2KHz to 3KHz which adjusted with the frequency of noise rate from the ignition system.
This is Audio Clipping Indicator electro suite, serves to provide an indicator in case of clipping for the audio signal. This case should be avoided because it will cause the reproduction of defect sound.
This Audio Clipping Indicator electro suite is built with 2 op-amp as the main component (IC TL062), that arranged to detect two side peaks of negatif and positif audio signal.
Generated with source voltage 9-30 Volt DC, the sensitiveness in case of audio signal clipping we can set the Trimpot. The peak of Positive audio signal is controlled by Op-Amp IC1A, and the negative side audio signal is controlled by Op-Amp IC1B.
If the level peak of positive and negative signal exceeds the reference, so that the both of Op-Amp will give the output and will be used to give the current input to C4, and if there is an element clipping, then the charge processing of C4 will be exceeds and finally the signal is forwarded to LED via Q1.
Source : wihans.info
This is LM3915 Audio Level Meter electro suite. This LM3915 is special for DOT/BAR Display Driver, operating from the rate of 0°C to +70°C, suited for signal audio level, power, light intensity or vibration. It could be supplied with the voltage of 3V until 25V.
This is PreAmplifier Equalizer using IC TL074 Electro Suite, front of the amplifier is done by the Op-Amp A1, A1 is actually reinforcing a time, with the intention of utilizing the high input impedance, about the size of 1M.
Setting the tone carried by the op-amp A2 which also acts as an amplifier with positive feedback, divided by two, partly channeled into a series of R1, R2, C2, C3, and Pot2 to adjust the gain of low frequency (bass), and some routed to the circuit C4, C5, and Pot3 to adjust the gain of high frequency (treble). Furthermore, R3 and R4 are mixing to form a positive feedback loop earlier. Frequency setting like this is a frequency filter theory Baxandall, can be regarded as the audio standard to date. The use of IC op-amp TLO74, because this component is very cheap and easily available, and most importantly, this IC uses a JFET at its input lines and a high slew-rate. With this circuit we can enjoy the stability of low tone Bass, agility tone middle (Mid), and high-pitch of Treble.
Source : Komputek | e-one-s
This is Crossover to Gain Audio System Quality Electro Suite, is a tool to improve the quality and the quality of the audio system. It should be installed before loudspeaker. For Loudspeaker, use type LS Woffer da Tweeter.
Source : e-one-s