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DUAL RPA 500 ® Two-Channel Reflected Plate Amplifier ® Tube Mic Pre 500 SERIES MODULE Owner’s Manual...
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WARNING: The DUAL RPA 500 has been tested and meets the FCC, CE and European Union rules, regulations, and guidlines for use. Do not attempt to modify or change the DUAL RPA 500, as this could void the regulatory compliance, which would place you at risk of losing your authority to operate the DUAL RPA 500.
SAFETY DECLARATIONS This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
TABLE OF CONTENTS 1.0 INSTALLATION 2.0 INTRODUCTION 3.0 CONTROLS AND INDICATORS 3.1 Trim Control 3.2 Input Meter 3.3 Output Level Switch 3.4 -26dB Pad 3.5 Phase 3.6 75Hz High Pass Filter 3.7 48V Phantom Power 3.8 Mic Lim 3.9 Instrument Input 4.0 WARRANTY AND SERVICE 4.1 Limited Warranty 4.2 Service Information...
500 series rack. 3. Pull your DUAL RPA 500 module out of its box and carefully slide it into place in the designated opening. Sight down the back of the module (use a flashlight if necessary) and ensure the card edge connector is aligned to seat into the card slot of the frame.
2.0 INTRODUCTION The DUAL RPA 500 is a two-channel microphone preamp featuring a two channel reflected plate amplifier tube mic pre. It takes up two slots in your receiving frame. The preamp features electronically balanced inputs and outputs and uses a discrete, solid-state, trans- formerless front end carefully crafted for extremely low noise and high common mode rejection.
However, some inexpensive computer audio interfaces have a maximum input level of less than +16dB. Most also offer a -20dB pad to address these kind of issues. 3.4 -26dB PAD When the input signal is clipping the preamp with the input trim control turned all the way down, the -26dB pad can be engaged to provide more headroom.
When the Mic Lim is limiting, the Mic Lim button will flash red. 3.9 INSTRUMENT INPUT The DUAL RPA 500 provides a 1/4”, 10 MOhm instrument input. When an instrument is plugged in to this input it will override the XLR input on the receiving frame.
User’s Manual. 3. Resulting from repair or attempted repair by anyone not authorized by Aphex. 4. Occurring from shipping (claims must be presented to shipper). WHO IS PROTECTED This warranty will be enforceable by the original purchaser and by any subsequent owner(s) during the warranty period, so long as a copy of the original Bill of Sale is submitted whenever warranty service is required.
4.2 SERVICE INFORMATION If it becomes necessary to return this unit for repair, you must first contact Aphex for a Return Authorization (RMA number), which will need to be included with your shipment for proper identification. If available, repack this unit in its original carton and packing material. Otherwise, pack the equipment in a strong carton containing at least 2 inches of padding on all sides.
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This product is protected under one or more of the following Aphex patents. 5,450,034 6,266,423 3500 N San Fernando Blvd. Burbank, CA 91505 USA PH: 818.767.2929 FAX: 818.767.2641 www.APHEX.com Page 11...
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