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harrymarlin
Samba Member
Joined: June 07, 2018
Posts: 790
Location: Washington, DC
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 Posted: Mon May 15, 2023 12:50 pm Post subject: Make my Stereo Mono? |
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I have a Sapphire VIII (8-Track Stereo), but I only have one speaker, and would like to combine my stereo to a single speaker (mono). The manual for the Sapphire VIII warns against not running the amplifier under stereo load (so, there need to be proper 8 ohm resistance for each stereo output/channel). Note: it has a common ground. Right now I have one connected to an 8 ohm resistor, which is great, but I only hear one side of the output, which is fine if I'm streaming in mono - not so great if I'm listening to an 8-track.
Is there an easy (and small) way I could allow both sides of the stereo come out of my single speaker without ruining my radio (I'm trying to keep as stock as possible, but I don't want to wire another speaker to the rear, which is what they did in 1967)?
_________________
-Harry
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1967 Ruby Red Convertible Beetle ("Becky")
ISO Albuquerque "Imported Motors" dealership paraphernalia |
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harrymarlin
Samba Member
Joined: June 07, 2018
Posts: 790
Location: Washington, DC
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| Posted: Wed May 17, 2023 7:45 am Post subject: Re: Make my Stereo Mono? |
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Any thoughts on how to take a powered stereo input and output powered mono while keeping load (8 ohm) across the inputs - all without changing a stock radio?
_________________
-Harry
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1967 Ruby Red Convertible Beetle ("Becky")
ISO Albuquerque "Imported Motors" dealership paraphernalia |
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clockworkbox
Samba Member
Joined: July 12, 2020
Posts: 477
Location: Williamsport, PA
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harrymarlin
Samba Member
Joined: June 07, 2018
Posts: 790
Location: Washington, DC
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| Posted: Wed May 17, 2023 8:09 am Post subject: Re: Make my Stereo Mono? |
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Interesting! I may not understand circuits as much as I would like to, but does this accept powered inputs (post amplifier)?
_________________
-Harry
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1967 Ruby Red Convertible Beetle ("Becky")
ISO Albuquerque "Imported Motors" dealership paraphernalia |
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clockworkbox
Samba Member
Joined: July 12, 2020
Posts: 477
Location: Williamsport, PA
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| Posted: Wed May 17, 2023 8:35 am Post subject: Re: Make my Stereo Mono? |
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I do not know as that circuit requires power. Here is a simple circuit like you describe but I do not know what size resistors you would need. My circuit experience comes from r/c car and drone building and playing with Arduino.
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'69 Beetle (pieces)
Learning the hard way is still learning... |
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clockworkbox
Samba Member
Joined: July 12, 2020
Posts: 477
Location: Williamsport, PA
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harrymarlin
Samba Member
Joined: June 07, 2018
Posts: 790
Location: Washington, DC
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| Posted: Wed May 17, 2023 9:16 am Post subject: Re: Make my Stereo Mono? |
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It looks interesting, but it looks like it accepts line level (unamplified) inputs and outputs line level (unamplified). What I would need would be amplified (powered) stereo inputs to amplified (powered) mono output. I don't believe that the Sapphire VIII can be bridged. Perhaps what I'm looking for isn't possible?
_________________
-Harry
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1967 Ruby Red Convertible Beetle ("Becky")
ISO Albuquerque "Imported Motors" dealership paraphernalia |
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clockworkbox
Samba Member
Joined: July 12, 2020
Posts: 477
Location: Williamsport, PA
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| Posted: Wed May 17, 2023 10:03 am Post subject: Re: Make my Stereo Mono? |
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Shoot an email to this guy and see if he can help you. I would not risk damaging your radio, it is rare and you want to be sure that you are doing the conversion the right way. Good luck!
[email protected]
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'69 Beetle (pieces)
Learning the hard way is still learning... |
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harrymarlin
Samba Member
Joined: June 07, 2018
Posts: 790
Location: Washington, DC
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| Posted: Wed May 17, 2023 10:28 am Post subject: Re: Make my Stereo Mono? |
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| clockworkbox wrote: |
Shoot an email to this guy and see if he can help you. I would not risk damaging your radio, it is rare and you want to be sure that you are doing the conversion the right way. Good luck!
[email protected] |
Thanks! I just sent off an e-mail. I really appreciate your help, and I'll follow up, here.
_________________
-Harry
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1967 Ruby Red Convertible Beetle ("Becky")
ISO Albuquerque "Imported Motors" dealership paraphernalia |
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edjose17
Samba Member
Joined: November 04, 2019
Posts: 39
Location: Puerto Rico
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| Posted: Thu Aug 14, 2025 10:27 am Post subject: Re: Make my Stereo Mono? |
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Did you receive a response?
| harrymarlin wrote: |
| clockworkbox wrote: |
Shoot an email to this guy and see if he can help you. I would not risk damaging your radio, it is rare and you want to be sure that you are doing the conversion the right way. Good luck!
[email protected] |
Thanks! I just sent off an e-mail. I really appreciate your help, and I'll follow up, here. |
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