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Interesting. I guess I’d try digitizing the audio and doing a compare on the digital signal. Or you could just invert one channel and sum them together. If you get nothing out, the audio is the same and therefore mono. If there is some signal out, the audio is probably stereo. I’ve never heard of one of these circuits existing but you could look. It might be more fun for you to design one.
Sony Vegas9 – HowTo convert Mono (single channel) Audio to Stereo (dual channel) tutorial
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JL Audio 1000/1 Amp $340.00 |
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96 97 98 99 CAVALIER AUDIO EQUIPMENT AM-MONO-FM-STEREO $45.00 |
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02 LESABRE AUDIO EQUIPMENT AM-MONO-FM-STEREO-CASS UN6 $100.00 |
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#SAT# GOLD 2-RCA STEREO AUDIO CABLE 5.1 m / 16 Feet $12.90 |
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00 01 IMPALA AUDIO EQUIPMENT AM-MONO-FM UM7 $125.00 |
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00 01 IMPALA AUDIO EQUIPMENT AM-MONO-FM-CD PLAYER UN0 $125.00 |
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00 01 MONTERO AUDIO EQUIPMENT CD PLAYER 1 DISC $75.00 |
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94 95 BONNEVILLE AUDIO EQUIPMENT AM-MONO-FM-STEREO-CASS $60.00 |
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96 97 98 99 CAVALIER AUDIO EQUIPMENT AM-MONO-FM-STEREO $55.00 |
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SPL GORILLA SERIES 650W RMS CLASS D 1 CHANNEL MOSFET CAR AMPLIFER W/ BASS KNOB $134.15 |
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POWER ACOUSTIK CRYPT SERIES CLASS AB 870W RMS 1 CHANNEL MOSFET AUDIO AMPLIFIER $127.15 |
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POLK AUDIO 540W MAX 10″ DB SERIES MONO 4-OHMS CAR & BOAT STEREO BASS SUBWOOFER $67.15 |
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JL AUDIO MHD SERIES 750W RMS 1 CHANNEL CLASS D MARINE MOSFET SUBWOOFER AMPLIFIER $648.15 |
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AUDIOCONTROL WIRED REMOTE LEVEL BASS CONTROL KNOB FOR LC7 DQL-8 LCQ-1 EPICENTER $44.15 |
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ROCKFORD FOSGATE 400W RMS CLASS AB MONO BLOCK VEHICLE AUDIO MOSFET AMPLIFIER $198.15 |
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POLK AUDIO 425W RMS 12″ MONO 4-OHMS MOBILE MONITOR SERIES CAR BASS SUB WOOFER $138.15 |
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JL AUDIO XD600/1 MONOBLOCK 600W RMS CLASS D MOSFET POWER CAR SUBWOOFER AMPLIFIER $328.15 |
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CRUNCH GROUND POUNDER SERIES 2100W CLASS AB CAR AUDIO 1-CHANNEL POWER AMPLIFIER $157.15 |
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POWER ACOUSTIK CRYPT SERIES CLASS D 3200W RMS 1 CHANNEL MOSFET AUDIO AMPLIFIER $256.15 |
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CRUNCH POWER ONE SERIES 1000W MAX CLASS AB CAR AUDIO 1-CHANNEL MOSFET AMPLIFIER $124.15 |
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HIFONICS ZRX2000.1D MONOBLOCK 2000W RMS CLASS D MOSFET POWER SUBWOOFER AMPLIFIER $227.15 |
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1 Din 3″ Car Audio DVD Player USB SD Radio RDS Smart Touch Key Local Delivery $99.00 |
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99 00 01 GALANT AUDIO EQUIPMENT CD PLAYER 1 DISC $125.00 |
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95 CUTLASS AUDIO EQUIPMENT AM-MONO-FM-STEREO-CASS $200.00 |
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95 CAPRICE AUDIO EQUIPMENT AM-MONO-FM-STEREO $45.00 |
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00 01 IMPALA AUDIO EQUIPMENT AM-MONO-FM-CD PLAYER UN0 $60.00 |
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1 DIN 7″ TOUCH SCREEN IN CAR STEREO AUDIO TV DVD PLAYER $146.30 |
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96 97 98 99 CAVALIER AUDIO EQUIPMENT AM-MONO-FM-STEREO $50.00 |
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99 00 01 GALANT AUDIO EQUIPMENT CD PLAYER 1 DISC $65.00 |
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BOSS AUDIO CX2000M CHAOS EXXTREME MONO MOSFET CAR AMPLIFIER 2.000 WATTS $151.95 |
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BOSS AUDIO CX1100M CHAOS EXXTREME MONO MOSFET CAR AUDIO AMPLIFIER 1,100W $98.95 |
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POWER ACOUSTIK BAMF1200/4 BAMF SERIES CLASS AB CAR AUDIO AMP 4-CHANNEL 1,200W $129.95 |
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KICKER DX500.1 CAR SUBWOOFER POWER AMPLIFIER $120.00 |
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92 93 94 LUMINA AUDIO EQUIPMENT AM-MONO-FM-STEREO-CASS $50.00 |
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94 95 SEVILLE AUDIO EQUIPMENT AM-MONO-FM-STEREO-CASS $50.00 |
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HIFONICS ZEUS SERIES 1500 WATTS CLASS D 1-CHANNEL CAR AUDIO SUBWOOFER AMPLIFIER $176.15 |
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92 93 DEVILLE AUDIO EQUIPMENT AM-MONO-FM-STEREO-CASS $49.95 |
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Pioneer DEQ-P8000 5.1 Channel Digital Audio Processor Car Audio Ampifier Grey $52.00 |
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New MA Audio 2400 Watt Mono 1-Channel Car Sub Amplifier $123.99 |
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2-12″ Subwoofers/Enclosure/1600W Mono Amp by MA Audio $179.99 |
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Swamp 8 Channel 1/4″ TS Mono to RCA Audio Snake – 2m $19.79 |
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MASSIVE AUDIO D3600 MONO AMPLIFIER 3600 WATTS AMP FREE $669.95 |
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MASSIVE AUDIO D1200 MONO AMPLIFIER 1200 WATTS AMP FREE $319.94 |
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audio control four.1 equalizer crossover eq $142.50 |
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BRAND NEW FOCAL AUDIO SOLID 1 SINGLE CHANNEL MONO AMPLIFIER AMP RED $237.55 |
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Directed Platinum RCA CAR AUDIO Cable ,1.8m $16.88 |
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POWER ACOUSTIK NB1 180 WATT 1″ CAR AUDIO STEREO TWEETERS PAIR 2-WAY MOUNT NEW $14.95 |
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01 02 FORESTER AUDIO EQUIPMENT RECVR AM-FM-CASS 1 DIN $60.00 |
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HiFonics BXi 1606D Mono Block Amplifier RMS (Continuous) Power: 1600-Watt x 1 @ 1-Ohm Highly Efficient Super D-Class Amplifier Circuitry With Oversized MOSFET Output Fully Adjustable Accu-Cross Crossovers 18dB Variable Bass Equalization @ 45Hz 180 Variable Phase Control (15 to 35Hz)… |
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Red Channel Mono $8.99 … |
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BOSS AUDIO ANL300 300 Amp ANL Fuse For use with car stereos and components / Fits ANL sockets / Prevents electrical blow outs On screen display menu PLL synthesized AM/FM tuner Up to 30 Station presets Switchable USA/Europe radio frequencies RDS (Radio Data System) Built in TV tuner (NTSC/PAL BG/I/DK switchable) Illuminated controls Preset EQ response curves Separate bass and treble Balance and fader controls Lo… |
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VC-SYS-4KQR5MB 4 Camera Security Package VRVC-SYS-4WEBMVP x 1 CameraVC-CA-TIRR-210B x 4 Storage500GB HDD Storage Cable50ft pre-made RG59 w/ power cable Power4CH power distribution box USB MouseIncluded [DVR Spec]************************************************************** Video SystemNTSC / PAL (auto detection) Video Compression FormatH.264 Video Input (Composite video signal 1 Vp-p 75ohm BNC)Main Monitor Output: for stable display Aud… |
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Pocket AM/FM/TV Receiver – White $64.95 Pocket AM/FM/TV Receiver – White… |
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2 x RCA Male / 1 x 3.5mm Stereo Female, Y-Cable, 6 inch $0.01 2 x RCA “Y” Audio Cable connects PC Sound Cards, portable CD players, MP-3 players or any mini-home stereo audio source with 3.5mm jacks to a stereo receiver or multimedia speakers. Features 3.5mm, nickel-plated connector plugs… |
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Malcom Distributors 2.5mm Female to 3.5mm Male 3 rings Jack Stereo Adapter On/Off enabled – Convert 2.5 mm Stereo Cell Phone Headset to 3.5 mm MP3 Stereo Earpiece Earphones Input Jack for iPhone 1G 3G 3Gs, Blackberry, Motorola Droid, Palm Pixi, HTC Eris Nexus One $0.01 Converts your 2.5mm stereo headset to a 3.5mm jack stereo headset. If your 2.5mm headset is on/off enabled so will the jack converted ones. This adapter will work with the following phones: iPhone first generation, 3G, 3GS Blackberry: BlackBerry Bold 9000, Bold 9700, Curve 8900/ 8330/ 8320/ 8310/ 8300, Pearl Flip 8220 / 8230 / 8130 / 8120 / 8110, Storm 9530 / 9500 / 9550 / 9520, Tour 9630 Palm… |
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Syba SD-CM-UAUD USB Stereo Audio Adapter, C-Media Chipset, RoHS $6.98 Description:Upgrade, replace, or fix desktop/laptop sound in a minute.Features: USB Stereo Audio Adapter, RoHS Compliant with USB 2.0 Full Speed (12Mbps) Specification Compliant with USB Audio Device Class Specification 1.0 Compliant with USB HID Class Specification 1.1 USB bus-powered mode, no external power required. Connectors: USB Type-A, Stereo output jack, Mono microphone-input jack LED indi… |
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Cables To Go 03167 6ft VALUE SERIES MONO RCA AUDIO CABLE $17.62 Our Value Series RCA Mono Audio Cables are ideal for connecting your single channel audio equipment. RCA Audio Cables are used to connect the composite audio signal on your audio equipment. Connectors: RCA Audio Male to RCA Audio Male. Fully molded connectors provide excellent strain relief. Designed for: Single channel audio applications. |
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Cables To Go 25483 25ft VALUE SERIES MONO RCA AUDIO CABLE $19.54 Value Series RCA Mono Audio Cables are ideal for connecting your single channel audio equipment. RCA Audio Cables are used to connect the composite audio signal on your audio equipment. Connectors: RCA Audio Male to RCA Audio Male. Fully modeled connectors provide excellant strain relief. Designed for: Single channel audio applications. |
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Cables To Go 03168 12ft VALUE SERIES MONO RCA AUDIO CABLE $18.06 Our Value Series RCA Mono Audio Cables are ideal for connecting your single channel audio equipment. RCA Audio Cables are used to connect the composite audio signal on your audio equipment. Connectors: RCA Audio Male to RCA Audio Male. Fully molded connectors provide excellent strain relief. Designed for: Single channel audio applications. |
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PyleHome PHA15 3.5mm 18 in. 150 Watt Mono Audio Amplifier $28.41 3.5mm / 1/8 Male Audio Input. 1 Channel Speaker Audio Output. 15W x 1 RMS Audio Output 150W x 1 Peak Audio Output. 4 Ohm Stable. Designed for use with all audio players with 3.5mm /1/8 audio outputs mp3 Ipod etc. |
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Audiovox Basic Mono Hookup Audio Cable $2.99 1 x RCA Male Audio 72″ AH22 Audio Cable Audiovox Audiovox Corporation Basic Mono Hookup Audio Cable Copper Not Applicable RCA www.Audiovox.com |
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Verge VGA300M 300 Watt Mono Car Audio Amplifier VGA300M $57.5 Verge VGA300M 300 Watt Mono Car Audio Amplifier VGA300M |
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6FT VELOCITY 3.5MM M/M MONO AUDIO CABLE $6.65 6FT VELOCITY 3.5MM M/M MONO AUDIO CABLE CABLES TO GO 6FT VELOCITY 3.5MM M/M MONO AUDIO CABLE |
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Mono $8.99 Mono |
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HOSA 10′ AUDIO CBL ST3.5-M1/4 $6.95 This Hosa Stereo Mini Male to 1/4″ Mono Male Cable is a 10′ long cable that can be used to “sum” stereo to mono in one direction, or to apply a mono signal equally to the left and right in the other direction. Great for sending the stereo signal from a portable CD player to a single mixer channel. |
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Cables To Go Velocity Mono Audio Cable $31.99 1 x Mini-phone Male Mono 2.30 lb 40941 75 ft Audio Cable Blue Cables To Go Lifetime Mini-phone Molded Oxygen-free copper (OFC) RoHS Velocity Velocity Mono Audio Cable Yes www.cablestogo.com |