I'm combining a stereo Left / Right signal into a mono signal, then sending that out to two separate speakers (I need them to each receive the same signal).
In placing my volume pot, does it matter if it's placed before converting to mono or after?
In placing my volume pot, does it matter if it's placed before converting to mono or after?
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It depend on how good a volume control you have. If your control does not track well, the channels will be better balanced
if they are combined after the volume control, since the tracking will not be a factor.
I'm still going to end up with dual outputs, a + and - for each speaker, except the signal is just going to be combined so that each speaker is receiving the same information.
Per Rayma, it sounds like I should place the pot before I combine the signals.
Thanks a lot!
Per Rayma, it sounds like I should place the pot before I combine the signals.
Thanks a lot!
I was just going to do as described in various other posts about combining stereo to mono, where i take the output of the pot and run the positives through 1k ohm resistors before combining
Not sure what you mean about the spst switch shorting?
Not sure what you mean about the spst switch shorting?
There's no need for the output resistors, unless you turn the volume control to maximum and there is no impedance in the input lines
before the control. There usually is, so you can just connect the two wipers together with a switch to have the inputs to both channels identical.
If this is a permanent arrangement, then you can hard wire the connection, instead of having a switch.
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Ahh, I see what you mean. You're saving me a step and just combining the signals within the volume control.
However, I'm afraid without the 1k resistors I could damage my input device? (i actually have no idea, I'm just going by what I've read on other forums and articles about combining the signals)
Any further insight?
However, I'm afraid without the 1k resistors I could damage my input device? (i actually have no idea, I'm just going by what I've read on other forums and articles about combining the signals)
Any further insight?
Does the previous circuitry before the volume control have a series resistor? If so, you're ok.
Do you have a schematic?
It does not. I'm basically having a 3-input selector switch to select input, which then goes directly to my volume pot, which sounds like would then send each channel through a 1k resistor, then to my amp
Ok, if it's a simple passive preamp, then you should have a 1k in each channel somewhere, either before or after the pot.
This will avoid any possible problem with a source component by directly shorting the two channels together without some isolation.
Thanks a ton for the info! Much appreciated.
It's a small, powered speaker enclosure, and the two speakers (left and right) are sharing the same enclosure. To prevent them modulating one another (since they're sharing the same air pressure) I'm just sending the same signal to each so the speaker cones modulate in unison.
It's a small, powered speaker enclosure, and the two speakers (left and right) are sharing the same enclosure. To prevent them modulating one another (since they're sharing the same air pressure) I'm just sending the same signal to each so the speaker cones modulate in unison.
one speaker modulating another would depend on size of the enclosure, position relative to each other,and sound pressure level (real loud) but if your noticing negative effects and feel that mono-ing is the solution have at 'er.
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