PlayinOcean Posted September 25, 2023 Share Posted September 25, 2023 Recently I had two amps sitting next to each other, and I was wondering what would happen if I'd use both of them simultaneously. So I used the L and R outputs from the HX, each going to one of the amps. Best sound I ever had. Have been reading up on using multiple amps since, and I am wondering whether it should actually be this simple. Shouldn't I be using an ABY pedal for this? I'd rather just use the HX, and it seemed to work... My questions: - When using the L/R outputs like this, is the signal strength halved or does the HX compensate for the splitting? - Are there benefits to using the Send output instead? - These particular amps didn't seem to have phasing issues. As long as I don't add additional pedals and I stick to these amps, I shouldn't have to worry about phase right? Same question for ground loop hum: didn't encounter it now, could it come up later with the same setup, f.e. in an different venue? I'm just using mono effects to the front of the amps, and I have no need for switching from one amp to the other. Thanks in advance! Quote Link to comment Share on other sites More sharing options...
Schmalle Posted September 25, 2023 Share Posted September 25, 2023 If you set Global Settings -> Ins/Outs -> Input Level and Output Level to Inst and crank the main Volume knob you get unity gain. This means that you get the same level on both outputs that you feed into the input. Or in other words: both amps should sound like you've plugged into them directly with your guitar (unless one or both amps have a non 1MOhm input impedance). I don't see technical benefits in using the Sends instead in your use case. Phase issues can be of two origins: a flipped phase or a delay on one channel. If you use additional digital pedals these usually add delay due to AD/DA conversion. As for the flipped phase (i.e. due to both speaker pushing their speaker(s) in opposite directions) you can put a Stereo Width block last in the chain and set RPolarity to Invert to test this by ear. Ground loops shouldn't be an issue if you power both amps from the same power outlet. It could become an issue when you connect a third device (i.e. a PC via USB). 1 Quote Link to comment Share on other sites More sharing options...
PlayinOcean Posted September 25, 2023 Author Share Posted September 25, 2023 On 9/25/2023 at 9:42 AM, Schmalle said: If you set Global Settings -> Ins/Outs -> Input Level and Output Level to Inst and crank the main Volume knob you get unity gain. This means that you get the same level on both outputs that you feed into the input. Or in other words: both amps should sound like you've plugged into them directly with your guitar (unless one or both amps have a non 1MOhm input impedance). Thanks for the reply. I am not sure which volume knob you want me to crank. My HX Effects does not have a volume knob... Quote Link to comment Share on other sites More sharing options...
Schmalle Posted September 25, 2023 Share Posted September 25, 2023 On 9/25/2023 at 11:11 AM, PlayinOcean said: Thanks for the reply. I am not sure which volume knob you want me to crank. My HX Effects does not have a volume knob... My mistake. I thought you used a HX Stomp for some reason. Everything except the volume knob stuff still applies to the HXFX. Quote Link to comment Share on other sites More sharing options...
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