Mono To Stereo Synthesizer

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oRbEq 18,306 3 12
This circuit attempts to liven up mono sound sources by simulating a stereo signal. It does this by shifting certain frequencies between left and right to fool the ear. It can often produce a passable mock stereo sound to bring some depth to otherwise flat recordings. Of course, there is no way to produce real stereo sound from a purely mono source unless the synthesizer had a way to tell which direction the original sound came from, but an illusion is generally enough for all but the hard core audiophile.

Schematic

This is the schematic of the Stereo Synthesizer

Parts
Part
Total Qty.
Description
Substitutions
R114.7K 1/4W Resistor
R2110K 1/4W Resistor
R3112K 1/4W Resistor
R4, R6222K 1/4W Resistor
R5111.K 1% 1/4W Resistor
R7116K 1/4W Resistor
R81100K 1/4W Resistor
R9124K 1/4W Resistor
R10118K 1/4W Resistor
C110.1uF Ceramic Disc Capacitor
C2, C320.47uF Ceramic Disc Capacitor
C4, C5, C730.01uF Ceramic Disc Capacitor
C610.013uF Ceramic Disc Capacitor
C8, C924.7uF 25V Electrolytic Capacitor
C1010.22uF Capacitor
C11147uF 25V Electrolytic Capacitor
C121100uF 25V Electrolytic Capacitor
D11LED (Red, Green or Orange)
U11TBA3810 (442-794)
S11SPDT Switch
S21SPST Switch
J1, J2, J33RCA JackOther suitable jack
MISC1PC Board, Wire, Case, Holder for D1, Socket for U1

Notes

  1. This circuit was sent in by oRbEq (email address unavailable).

  2. S2 controls power to the circuit. Switching S1 to ground bypasses the circuit and outputs mono sound to both output jacks. Setting S1 to R1 enables the synthesized stereo sound at the outputs.

  3. The circuit draws very little current and can thus be powered by most any well filtered 9V-12V source (including a standard 9V radio battery).

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Comments

v.vinoth
Mono To Stereo Synthesizer
Friday, February 08, 2008 6:14:09 AM
*what is a value of C13?
anonymous
Mono To Stereo Synthesizer
Tuesday, January 22, 2008 4:44:56 AM
C13 = 0.033uF Ceramic Disc Capacitor
dinesh
Mono To Stereo Synthesizer
Monday, December 03, 2007 9:59:59 AM
what is the value of c13
david paolo
Mono To Stereo Synthesizer
Wednesday, November 28, 2007 4:53:43 AM
any substitute for the tba3810 ic?
ramzyESTI
what is the TBA3810 (442-794)
Thursday, August 30, 2007 4:22:13 AM
what's exactly the TBA3810 (442-794)? and can i get the datasheet of it?
anonymous shrinidhi
Mono To Stereo Synthesizer
Thursday, August 02, 2007 3:29:23 AM
hi i m planning to build this ckt as a college project. so, i want more information about it.
anonymous
Mono To Stereo Synthesizer
Friday, May 18, 2007 9:49:35 AM
The correct IC is TDA3810 from Philips. Datasheet: http://www.ortodoxism.ro/datasheets/philips/TDA3810.pdf
anonymous
Mono To Stereo Synthesizer
Saturday, May 12, 2007 5:59:24 AM
any other things its like a mono to stereo, how about a diagram of a frequency divider, like a whole sound gonna be torn to low, med and high frequency?.
Amos
Mono To Stereo Synthesizer
Thursday, May 03, 2007 12:11:58 PM
Anyone has datasheeet for TBA3810 (442-794)?
mike
Mono To Stereo Synthesizer
Saturday, April 21, 2007 4:25:33 PM
Do tou know were theTBA3810 chip is available? Mike
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