Question 1

How to connect a multi-effects unit to the effects loop of the Bandit 112?

Accepted Answer

The Peavey Bandit 112 has an external effects loop consisting of two 6.3 mm mono jacks: a Send jack and a Return jack.

To connect a multi-effects unit to this effects loop, follow these steps:

Connect the output of your multi-effects unit to the Return jack of the Bandit 112
Connect the input of your multi-effects unit to the Send jack of the Bandit 112

An effects level switch allows you to select between two signal levels:

“in” position: 0 dBV (strong signal, for standard multi-effects)
“out” position: -10 dBV (weak signal, if necessary)

Once the multi-effects unit is connected, you can control the activation/deactivation of the effects loop using the remote switch, which also manages the selection between the Clean and Lead channels.

Question 2

How to use the High Gain, Low Gain, Eff Loop, Remote Switch, and External Speaker 8 ohm inputs on the PEAVEY STUDIO PRO 112 amplifier?

Accepted Answer

The PEAVEY STUDIO PRO 112 amplifier has several specialized inputs and outputs, each intended for different uses. Here’s how to use each connection:

High Gain and Low Gain Inputs - These two 6.35 mm mono jack inputs are used to connect your instrument. The High Gain input is the standard input ideal for most electric guitars. It is 6 dB more powerful than the Low Gain input, making it the optimal impedance: 250 k ohms and a nominal level of -12 dBV. The Low Gain input (impedance 44 k ohms, nominal level -7 dBV) is designed for instruments with an extremely high output level that could overload the High Gain input. If you connect both inputs simultaneously, they both operate at the Low Gain level. You should only connect one source at a time to these inputs.

Effects Loop (Eff Loop) - This pair of 6.35 mm mono jacks (SEND and RETURN) allows you to insert external effects between the preamplifier stage and the power amplifier. Connect the SEND jack to the input of your effects equipment (pedals, processors, external reverb), then send the output of that equipment back to the RETURN jack of the amplifier. The signal follows this path (“loop”): exits the preamp via SEND, goes through your effects, and then returns via RETURN before reaching the power amplifier.

Remote Switch - This 6.35 mm jack accepts an optional multifunction remote switch (standard Peavey footswitch). This switch allows you to remotely select between the Clean and Lead channels, and to turn the built-in Reverb on or off without approaching the amplifier. Important: the front channel selector must be in the LEAD position for the Remote Switch to work. This connection only accepts compatible footswitches, no other devices.

External Speaker Output 8 ohms - This 6.35 mm jack allows you to connect an external speaker cabinet with a minimum impedance of 8 ohms (for example, the Peavey 412M). When you connect an external speaker to the Studio Pro 112, the internal 12-inch Blue Marvel speaker automatically disconnects to avoid a dangerous double load. Ensure that the impedance of the external speaker is exactly 8 ohms or higher to avoid damaging the amplifier. Only connect one external speaker at a time to this output.

Summary of connections: the High Gain input for your standard guitar, the Low Gain input for a high-output instrument, the effects loop to insert pedals or processors between the preamp and power, the Remote Switch to control channels and reverb remotely (optional), and the external speaker output to add an 8 ohm external speaker if you want more volume or to change the tone.

Question 3

Does the PEAVEY STUDIO PRO 112 have a specific output, and is it normal not to find certain outputs on this amplifier?

Accepted Answer

The PEAVEY STUDIO PRO 112 is a guitar amplifier primarily designed to amplify the signal of an electric guitar through its main input. Regarding outputs, this amp does not necessarily have all the outputs that one might find on more complex or studio equipment.

Available Outputs on the PEAVEY STUDIO PRO 112

Speaker output: This is the main output to the built-in or external speaker.
Headphone output: Allows you to connect headphones for silent listening.
Additional outputs: Some models may have a line or DI output, but this is not standard on the STUDIO PRO 112.

If you do not find a specific output (for example, a "Line Out" or "Direct Out"), this is normal as this model is rather simple and intended for direct use with the guitar and the built-in speaker.

What to do if you want to connect the amplifier to other equipment?

Use the headphone output as a line output if you want to send the sound to a mixing console or recorder, adjusting the volume to avoid distortion.
If you need a quality direct output, it may be necessary to use external equipment such as a microphone in front of the speaker or a DI box.

In summary, the absence of certain outputs on the PEAVEY STUDIO PRO 112 is normal and related to its design. Check the outputs present on your amp and adjust your setup accordingly.

Question 4

How to connect a mixer to a PEAVEY STUDIO PRO 112 amplifier?

Accepted Answer

Your PEAVEY STUDIO PRO 112 mixer can be connected in two ways depending on your needs. The best solution is to use the Power Amp In input (6.35 mm mono jack at the back of the amp), which accepts line-level signals from a mixer. This setup bypasses the TransTube preamp and allows the power amp to directly amplify the mixed signal.

Procedure with Power Amp In (recommended solution):

Connect a quality shielded 6.35 mm jack cable from the main output (Main Out) of your mixer to the Power Amp In of the STUDIO PRO 112
The input level should be between -8 dBV and +6 dBV (or 380 mV RMS nominal) for optimal operation
Turn down the mixer volume completely before turning on the amp
Turn on the amplifier and gradually increase the mixer volume to reach the desired level
Use the main volume control of the STUDIO PRO 112 to adjust the output power if necessary

Alternative procedure with instrument inputs:

If your mixer has low-level RCA outputs, you can connect an RCA to 6.35 mm jack adapter cable to the High Gain input (standard input) of the STUDIO PRO 112
The High Gain input is designed for signals of -13 dBV (225 mV RMS nominal) and supports up to 0 dBV (1V RMS maximum)
This approach uses the TransTube preamp and allows you to enjoy the Clean and Lead channels with all their modes (Vintage, Modern, Hi Gain)

Important advice: Do not connect to both the Power Amp In and the instrument inputs simultaneously, as inserting a plug into the Power Amp In automatically disables the preamp signal. Choose a single input source and test the signal level before connecting additional instruments to avoid any distortion.

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