OK... I have had another bout of pedal weirdness at TJs.
They have a PA that looks fairly standard (mostly Yamaha kit, including the desk and the amp). They run their microphones into a snake. The snake has the 3-connector balanced line female sockets.
The leads they use for guitars have a jack plug at the guitar end but the other end goes into the snake.
Now my set up (which is maybe too grand a term).
The guitar has an LR Baggs Dual Source pre-amp/pickup system. As per the manual this system has an output impedance of 1200 ohms and an output level of -10 db.
From the guitar I run a lead into a Carl Martin Classic Chorus pedal. This is described as a true bypass pedal. The manual says input impedance is 1Meg ohms and output impedance 100 ohms.
The output from the pedal goes into one of TJ's guitar leads (Ie jack on one end, XLR on the other).
Now with the pedal in bypass everything is fine. I kick the pedal in and the signal level drops substantially.
I have tested the pedal at home into my PC's sound card. OK... not an exact replication of the problematic setup, but it doesn't show the same substantial drop off.
I have used the pedal with Keira's rig. No problems there.
So why into a PA is there a problem? Is this an impedance issue? After all the stomp box is really designed to feed the input of a guitar amplifier. Is a DI box between the pedal and the PA going to improve matters?
They have a PA that looks fairly standard (mostly Yamaha kit, including the desk and the amp). They run their microphones into a snake. The snake has the 3-connector balanced line female sockets.
The leads they use for guitars have a jack plug at the guitar end but the other end goes into the snake.
Now my set up (which is maybe too grand a term).
The guitar has an LR Baggs Dual Source pre-amp/pickup system. As per the manual this system has an output impedance of 1200 ohms and an output level of -10 db.
From the guitar I run a lead into a Carl Martin Classic Chorus pedal. This is described as a true bypass pedal. The manual says input impedance is 1Meg ohms and output impedance 100 ohms.
The output from the pedal goes into one of TJ's guitar leads (Ie jack on one end, XLR on the other).
Now with the pedal in bypass everything is fine. I kick the pedal in and the signal level drops substantially.
I have tested the pedal at home into my PC's sound card. OK... not an exact replication of the problematic setup, but it doesn't show the same substantial drop off.
I have used the pedal with Keira's rig. No problems there.
So why into a PA is there a problem? Is this an impedance issue? After all the stomp box is really designed to feed the input of a guitar amplifier. Is a DI box between the pedal and the PA going to improve matters?