Home > Circuits > A > Amplifiers - Stereo

Audio Schematics - Stereo Circuits

1W RF Power Amplifier for iPOD Stereo FM transmitters - This map, armored also enables automatic MONO / MPX through a low-pass filter, even with a multiplex on its entry by using an ON / ON, panning, the whole spectrum MPX more RDS is sent to the synthesizer, on the other hand when it is in a position MONO, the low-pass filter is activated and share its cutoff frequency at 15 KHz, only modulation G + D is sent to the synthesizer, as 19 KHz. 19 KHz carrier, the signal multiplex and subcarrier 57 KHz is thereby eliminated, which provides ease of use for example in a string of issue relay tuner, if the link between the issuer Departure and receiver re-issue was not of good quality stereo, you sufficient to switch to mono to improve sound quality, you can then connect the RDS encoder at the re-issuer.

20 Watt Audio Amplifier (Aaron Cake) - Simple stereo amplifier based on TDA1554..

20 Watt/Channel Stereo Power Amplifier - Based on the versatile LM1875 from National Semiconductor

27MHz toy car Transmitter

2x30W (stereo) Amplifier with STK465  - A amplifier of acoustic frequencies can be manufactured with discernible materials, despite is known so much the difficulties of finding of materials, what the problem of regulations. These difficulties are overcome relatively easily if we find amplifier in form completed.

4 Channel Stereo Audio Selector - The add-on circuit presented here is useful for stereo systems. This circuit has provision for connecting stereo outputs from four different sources/channels as inputs and only one of them is selected/connected to the output at any one time.

5W PLL Stereo Transmitter with LCD - Here's PLL FM transmitter circuit from china. This circuit uses the familiar 2SC1971 for final power amplifier stage.

A Simple FM Stereo Transmitter

A Soundfield Simulator for Stereo Headphones - An adaptation of the Linkwitz acoustic simulator (see An Acoustic Simulator for Headphone Amplifiers by Chu Moy above) as a front-end for headphone amplifiers with very high input impedance, such as the author's own headphone amp project (see A DC-Coupled, Selectable-Gain Headphone Amplifier). This circuit features a continuously adjustable Soundfield control.  Designed by Chester Simpson

Add on Stereo Channel Selector

AN-11 LX1720: High-Efficiency Class-D, Stereo Audio Amplifier Controller IC. Summary - Application Note Microsemi 1501

AN-147: Low Cost IC Stereo Receiver - National Semiconductor Application Note

AN-543-Stereo FM Transmitter DSP, 26,085 bytes - AN-543-StereoFMTransmitter-Analog Device Application Notes

Audio Line Driver

Big Ear Stereo Parabolic Microphone - This device is a stereo amplifier for a high sensitivity stereo parabolic microphone. It can be used for listening to distant sounds. Typical parabolic microphones are monophonic, this unit has a stereo audio path that helps produce more realistic sounding audio. The Big-E can be used with headphones or as an audio source for a stereo tape recorder.

Converts Consumer Stereo Inputs to Mono Balanced Mic Output - AS078 Jenson Transformer Application Note

High quality AM through your FM stereo

High-quality Stereo Encoder - This stereo encoder is a halfway between analogue and digital processing. It combines the best from both domains to provide high-quality and easy to build device. The sampling frequency used in this stereo encoder is 97 times…

Improved FM Stereo Modulator

Ipod Stereo FM transmitter with 1W output power - This project explain how you can build and connect a powerful 1W amplifier to your FM transmitters…

JT-DB-E Converts Consumer Stereo Inputs to Mono Balanced Mic Output - AS078 Jenson Transformer Application Note

JT-MB-D Passive Stereo Matrix for M-S Mic Technique - AS055 Jenson Transformer Application Note 

LM1876-Overture Audio Power Amplifier Series Dual 20-Watt Audio Power Amplifier with Mute & Standby Modes  - The LM1876 is a stereo audio amplifier capable of delivering typically 20W per channel of continuous average output power into a 4 or 8 load with less than 0.1% THD+N.

Low Cost IC Stereo Receiver - National Semiconductor Application Note

LX1720: High Efficiency Class-D Stereo Audio Amplifier Controller IC - MicroNote 1501 from Microsem 

LX1720: High-Efficiency Class-D, Stereo Audio Amplifier Controller IC. Summary AN-11 - Application Note 11 from Microsem

MS Stereo Microphone

Multimedia Speaker

NTE789 Stereo Decoder - The NTE789, a monolithic silicon integrated circuit, is a stereo multiplex decoder intended for FM multiplex systems. This stereo multiplex decoder requires only one low–inductance tuning coil (requires only one adjustment for complete alignment), provides automatic stereo switching, energizes a stereo indicator lamp, and operates from a wide range of voltage supplies.

Overture Audio Power Amplifier Series Dual 20-Watt Audio Power Amplifier with Mute & Standby Modes  - The LM1876 is a stereo audio amplifier capable of delivering typically 20W per channel of continuous average output power into a 4 or 8 load with less than 0.1% THD+N.

Passive Stereo Matrix for M-S Mic Technique - AS055 Jenson Transformer Application Note

Professional Stereo Encoder - Uses high quality NJM2035 stereo coder IC.

RIAA Equalized Stereo Phono Preamp

Note: To report broken links or to submit your projects please send email to Webmaster

Discover

     more......