Introduction
The HEADRUSH FRFR112 MKII is a powerful 2500-watt full-range, flat-response (FRFR) powered speaker designed specifically for guitarists and bassists using amp modeling multi-effect pedals or pedalboards. Its flat response ensures that the pure tone and character of your instrument and effects are preserved without compromise. The FRFR112 MKII is versatile, lightweight, and features Bluetooth connectivity for wireless audio streaming, making it suitable for rehearsals, live performances, and home use.

Image: The HeadRush FRFR112 MKII speaker, shown in its wedge monitor position, highlighting its robust design and front grille with the HeadRush logo.
Safety Information
Before operating the FRFR112 MKII, please read and understand all safety instructions. Retain this manual for future reference.
- Power Source: Connect the unit only to a power supply of the type described in this manual or marked on the unit.
- Ventilation: Ensure proper ventilation. Do not block any ventilation openings.
- Water and Moisture: Do not use this apparatus near water or in damp environments.
- Heat: Do not place near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
- Cleaning: Clean only with a dry cloth.
- Servicing: Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
What's in the Box
Verify that all items listed below are included in your package:
- FRFR-112 MK2 Powered Speaker
- Power Cable
- Quickstart Guide
- Safety & Warranty Manual
Product Overview
The FRFR112 MKII is engineered to deliver superior sound reproduction for your digital guitar and bass rigs. Key features include:
- 2500 Watts of Power: Provides ample headroom for any performance or rehearsal setting.
- Full-Range, Flat-Response: Ensures accurate reproduction of your amp and cab emulations without coloration.
- Custom-Voiced Drivers: Features a specially-voiced 12-inch woofer and a 1-inch high-frequency compression driver for superb clarity.
- Bluetooth Connectivity: Stream music wirelessly from your mobile device for practice or during breaks.
- Versatile Positioning: Can be used in wedge, upright, or pole-mounted positions.
- Rugged and Portable: Durable construction yet lightweight at 34.7 lbs for easy transport.
- Comprehensive Connectivity: Dual XLR/TRS 1/4" combo inputs with independent volume controls, XLR mix output, Ground-Lift switch, and HPF EQ switch.

Image: Two FRFR112 MKII speakers positioned on a stage floor, alongside guitar pedalboards, illustrating their use in a performance setup.

Image: A close-up of the FRFR112 MKII speaker, emphasizing its precision-tuned design for accurate sound delivery, with a guitar blurred in the background.
Setup
Initial Placement and Power Connection
- Unpacking: Carefully remove the FRFR112 MKII from its packaging.
- Positioning:
- Wedge Position: Place the speaker on the floor, angled upwards towards the performer, for use as a stage monitor.
- Upright Position: Place the speaker vertically on a flat, stable surface for general amplification.
- Pole-Mounted Position: Insert the speaker onto a standard 36mm speaker pole for elevated sound projection.
- Power Connection: Ensure the power switch on the rear panel is in the "OFF" position. Connect the included power cable to the AC input on the rear panel and then to a grounded power outlet.

Image: The FRFR112 MKII speaker positioned as a floor wedge monitor, ideal for stage use.

Image: The FRFR112 MKII speaker standing upright, suitable for general amplification.

Image: A detailed view of the rear panel of the FRFR112 MKII, highlighting the 36mm pole socket for elevated mounting.
Operating the FRFR112 MKII
Basic Operation
- Power On: Flip the power switch on the rear panel to the "ON" position. The power LED will illuminate.
- Volume Control: Adjust the independent Volume 1 and Volume 2 knobs to set the desired output level for each input.
- HPF EQ Switch: Use the HPF (High-Pass Filter) EQ switch to cut low frequencies (100 Hz) if needed, which can help clarify the sound in a dense mix or prevent muddiness.
- Ground-Lift Switch: If you experience hum or noise due to ground loops, activate the Ground-Lift switch.

Image: The rear panel of the FRFR112 MKII, clearly showing the labeled controls for Volume 1, Volume 2, Mix Out, Inputs 1 and 2, Ground-Lift switch, Bluetooth pairing button, and HPF EQ switch.
Connectivity
Instrument and Line Inputs
- XLR/TRS 1/4" Combo Inputs (Inputs 1 & 2): Connect your multi-effects processor, pedalboard, or other audio sources to these inputs. Each input has an independent volume control.
- XLR Mix Output: Use this output to send the mixed signal to another FRFR112 MKII unit for chaining, or to a front-of-house (FOH) mixer.
Bluetooth Connectivity
The FRFR112 MKII features Bluetooth 5.0 for wireless audio streaming.
- Pairing: Press and hold the Bluetooth pairing button on the rear panel until the Bluetooth LED flashes.
- Connect: On your mobile device, search for "FRFR112 MKII" in your Bluetooth settings and select it to pair. The Bluetooth LED will glow solid when connected.
- Streaming: Once paired, you can stream audio from your device through the FRFR112 MKII. This is ideal for playing along with backing tracks or listening to music during breaks.

Image: The FRFR112 MKII speaker positioned next to a bass guitar and a tablet displaying music, illustrating its Bluetooth streaming capability.

Image: A hand connecting an XLR cable to the rear input panel of the FRFR112 MKII, demonstrating the ease of connectivity.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your FRFR112 MKII.
- Cleaning: Use a soft, dry cloth to clean the exterior of the unit. Do not use abrasive cleaners, waxes, or solvents.
- Storage: When not in use, store the unit in a cool, dry place, away from direct sunlight and extreme temperatures.
- Transport: When transporting the unit, use appropriate protective covers or cases to prevent damage. The integrated handles are designed for secure carrying.

Image: A person carrying the FRFR112 MKII speaker using its integrated side handle, demonstrating its portability and ease of transport.
Troubleshooting
This section addresses common issues you might encounter with your FRFR112 MKII.
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound Output |
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| Hum or Buzzing Noise |
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| Bluetooth Pairing Failure |
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Specifications
| Feature | Detail |
|---|---|
| Output Wattage | 2500 Watts (Peak) |
| Speaker Size | 12-inch Woofer, 1-inch HF Compression Driver |
| Frequency Response | Full-Range, Flat-Response |
| Connectivity | (2) XLR/TRS 1/4" Combo Inputs, (1) XLR Mix Output, Bluetooth 5.0 |
| Controls | Volume 1, Volume 2, HPF EQ Switch, Ground-Lift Switch, Bluetooth Pairing Button |
| Dimensions (H x W x D) | 13.78 x 25.59 x 13.78 inches (350 x 650 x 350 mm) |
| Item Weight | 34.7 pounds (15.7 kg) |
| Material | Metal or Strong Composite |
| Power Source | Corded Electric |

Image: A diagram showing the dimensions of the FRFR112 MKII speaker, including height, width, and depth measurements.
Warranty and Support
For detailed warranty information and technical support, please refer to the Safety & Warranty Manual included with your product or visit the official HEADRUSH website.
Protection Plans: Extended protection plans may be available for purchase. Please check with your retailer or the official HEADRUSH website for details on 3-Year and 4-Year Protection Plans, and Complete Protect options.
Online Resources: For additional support, FAQs, and product registration, visit the HEADRUSH official website:





