ProRMP - Uncategorized Radial Engineering - Free user manual and instructions
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| Product Type | Stereo Vacuum Tube Microphone Preamp |
| Model | ProRMP |
| Brand | Radial Engineering |
| Channels | 2 (Stereo) |
| Tube Type | 2x 12AX7 (ECC83) |
| Inputs | 2x XLR (Transformer isolated) |
| Outputs | 2x XLR, 2x 1/4" TRS |
| Phantom Power | +48V (per channel) |
| Frequency Response | 20 Hz - 20 kHz |
| Gain Range | Up to 70 dB |
| Power Supply | Internal, 100-240 VAC, 50/60 Hz |
| Dimensions (W x D x H) | 19" x 8" x 1.75" (rackmount, 1U) |
| Weight | 5.5 kg (12.1 lbs) |
| Construction | Steel chassis, zinc-plated |
| Cooling | Passive (vents) |
| Warranty | 3 years (limited) |
| Repairability | Tubes and power supply serviceable |
| Certifications | CE, FCC, RoHS |
| Included Accessories | IEC power cord, rack ears |
Frequently Asked Questions - ProRMP Radial Engineering
Can I use the ProRMP with dynamic microphones?
Yes, the ProRMP works with all microphone types including dynamic, condenser, and ribbon. For condenser mics, enable the +48V phantom power switch on the rear panel.
How do I replace the tubes in the ProRMP?
Unplug the unit and remove the top cover screws. The two 12AX7 tubes are located in labeled sockets. Carefully pull out the old tubes and insert new ones, ensuring the pins align. Reassemble and bias is not required.
What is the gain structure and maximum output level?
The gain control is a 12-step rotary switch providing up to 70 dB of gain. The maximum output level is +28 dBu balanced, allowing it to drive professional audio interfaces and converters.
Does the ProRMP have a high-pass filter or polarity reverse?
No, the ProRMP is a minimalist design focused on clean, high-gain tube amplification. It does not include EQ, filters, or phase inversion switches.
Can I use the ProRMP as a stereo DI box for line-level signals?
The ProRMP is a microphone preamp and is not designed for line-level signals. For line-level inputs, consider using a passive or active DI box before the preamp.
What is the recommended warm-up time for the tubes?
Allow at least 30 minutes for the tubes to reach their optimal operating temperature. Stabilization ensures consistent performance and tube longevity.
How do I clean and maintain the ProRMP?
Use a soft, dry cloth to clean the chassis. Avoid solvents. Periodically inspect tubes for microphonics or noise and replace as needed. Ensure ventilation is clear.
Does the ProRMP work with 500-series racks?
No, the ProRMP is a standalone 1U rackmount unit, not a 500-series module. It has its own internal power supply.
What cables are required for typical studio use?
Connect microphones via XLR cables to the inputs. Use XLR or balanced TRS cables from the outputs to your mixer or audio interface. Ensure phantom power is off when connecting ribbon mics.
Is there a risk of overheating if mounted in a rack?
The ProRMP is passively cooled and designed for rack use. However, avoid mounting directly above hot equipment (e.g., power amps). Leave at least 1U space above for ventilation if possible.
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USER MANUAL ProRMP Radial Engineering
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Product information
Brand : Radial Engineering
Model : ProRMP
Category : Uncategorized