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Old 26th July 2013, 08:28 PM   #11
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Ok, just figured out what a 20K resistor is. But why this particular voltage?
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Old 26th July 2013, 08:30 PM   #12
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wow, I seriously just found a post which is asking exactly what Im asking here. Havent read through it yet, but ill check it out to see if the answer WAS ALREADY FOUND. hOPE ITS NOT A PROBLEM POSTING IT HERE:

stereo to mono?
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Old 26th July 2013, 08:52 PM   #13
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Same thing we've been saying all along...

Goto Radio Shack, buy these

https://www.radioshack.com/product/i...watt+resistors

https://www.radioshack.com/product/i...watt+resistors

They should also have the connectors or you can sacrifice a cable to make.
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Old 26th July 2013, 08:56 PM   #14
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475Ω is not a standard value, but the difference is insignificant. If you have a meter or have access to a meter you should use two that are closely matched. Normally when bought this way the tolerance of 5% is no problem and they will probably be better than 1% tolerance of one another. typically find them to be closer to 0.1% of one another which is what you want.
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Old 26th July 2013, 09:31 PM   #15
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Ok, pretty sure I have it now. Correct me if I'm wrong or doing more work than necessary.

-Splice the stereo cable which is coming coming from my MP3 player
-There will be 3 leads; L, R and ground
-Solder a 475 1% resistor to the L and R leads, separately
-Solder a length of wire to each 475's opposite end and then join these 2 wires
-Add a 20K 1% resistor to these 2 joined wires and add a length of wire

This should leave me with 2 leads; the originally joined wires, including resistors and the ground wire. From here ill have the 2 inputs for the mono amp.
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Old 26th July 2013, 09:54 PM   #16
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Well, you don't need so many wires - where the three resistors all connect to each other, just solder them directly together with the mono positive lead.

P.S. it just occurred to me that maybe you looked up "K" as a code. That's just a 20kΩ, i.e. 20,000Ω resistor, same type as the others.

Last edited by dumptruck; 26th July 2013 at 09:57 PM.
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Old 26th July 2013, 10:51 PM   #17
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Ok, thanks for the confirmation. May be asking a lot, but what exactly are the resistors doing to the load?
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Old 27th July 2013, 04:20 AM   #18
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It places an easy load on the output device connected and mixes them equally, while not attenuating the sum.
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Old 27th July 2013, 11:20 AM   #19
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I have used a KEF stereo/mono transformer and also the Monacor convertor.
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Old 27th July 2013, 07:21 PM   #20
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Quote:
Originally Posted by stickinsect View Post
I have used a KEF stereo/mono transformer and also the Monacor convertor.
Sight unseen, I'm assuming these would cost a bit more than purchasing the resistors and sodering myself.
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