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FMR Audio A.R.C. Quick Start Manual

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A.R.C.
Quickstart Guide
V0.50

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Summary of Contents for FMR Audio A.R.C.

  • Page 1 A.R.C. Quickstart Guide V0.50...
  • Page 2 I appreciate you putting your trust and hard-earned cash into one of FMR Audio’s products (or at least giving us a shot by demoing them)! Even though all of us here at FMR Audio are very proud of our prod-...
  • Page 3 It does all this with a minimum set of controls and a look that entices you to plug it in and turn the knobs! A Brief History The FMR Audio A.R.C. is based upon our very yellow and nicely tonal PBC-6A. With the ‘6A, I found that I could make guitar tracks‚ especially acoustic guitars‚ sound sweeter‚ fuller‚ and punchier with the right combination of PBC-6A control settings.
  • Page 4 FMR Audio, +1-512-280-6557 www.fmraudio.com After some head-scratchin’, prototypin’‚ pickin’‚ grinnin’‚ and apostrophes, the result is the FMR Audio A.R.C. With only three controls (plus bypass), it provides PBC-6A tonality in a more convenient, easy-to- use format and with features more appropriate to support live and studio instrumentalists.
  • Page 5 FMR Audio, +1-512-280-6557 and distorted out-of-date devices. The A.R.C. uses the incoming 9V to create a ± 30V internal supply ( )! This permits the use of state-of-the-art devices to achieve low-noise, wide dynamic range performance. • Many Power Supply Choices — We specify the A.R.C. to work with the indus- try-standard BOSS PS-120 type power supply.
  • Page 6 FMR Audio, +1-512-280-6557 www.fmraudio.com They’re custom-designed. They’re custom-built. They’re solid anodized alumi- num and will last a couple of lifetimes. • THAT2181 VCAs — These are the same VCAs used in scores of professional audio compressors, gates and other dynamic processors. We can use these with- out compromise, in part, because of the higher-than-normal power supply rails.
  • Page 7 FMR Audio, +1-512-280-6557 it’ll be more difficult to make room on a crowded pedal board for a larger-than- normal enclosure and, for even smaller set-ups, the larger enclosure will add more weight than most. Despite these concerns we chose this path for a couple of reasons: (1) there’s more electronics in the A.R.C.
  • Page 8 FMR Audio, +1-512-280-6557 www.fmraudio.com you plug into first, just put the A.R.C. in the chain where you’d like it using a reg- ular 1/4" phone plug cable. Remember, since the A.R.C. has a wide dynamic range, you may also use the A.R.C. as a studio effect! In that case, just hook it up with an unbalanced cable as you would any other studio effect...
  • Page 9 FMR Audio, +1-512-280-6557 P E R A T I N G O N T R O L S Control & Indicator Descriptions There are four top panel controls on the A.R.C. (see Figure 1): • INPUT LEVEL — This knob controls the gain of the input preamplifier. This con- trol is used in combination with the DRIVE control to change how the A.R.C.
  • Page 10 FMR Audio, +1-512-280-6557 www.fmraudio.com to the fully counterclockwise positions and make sure the A.R.C. is bypassed (i.e., the RED bypass light is lit). • Set the volume of your guitar and amplifier as you normally would with the A.R.C. bypassed. Since the A.R.C. is starting in the bypassed condition, setting the volume of your instrument and amplifier is as though the A.R.C.

  • Page 11: The A.r.c. As A Compressor

    FMR Audio, +1-512-280-6557 “0” (i.e., fully CW) and use the INPUT control to give you the desired level. Figure 2: Using the A.R.C. as a BOOST Pedal Banjo* Use this control F M R A u d i o to give you the desired "boost"...
  • Page 12 FMR Audio, +1-512-280-6557 www.fmraudio.com may be too extreme except for a “special effect”. Find the balance that’s good for your circumstance. Figure 3: Using the A.R.C. as a D.I. Banjo Mixer/Recorder/ADC This control DOES NOT Use this control F M R A u d i o...

  • Page 13: Control Description

    FMR Audio, +1-512-280-6557 Figure 4: A.R.C.Rear Panel F M M R A A u d i o o A.R R R R R R R R .C. Pow w er Pow w er O O ut In n Balanced In n MADE IN AUSTIN TEXAS, U.S.A.
  • Page 14 FMR Audio, +1-512-280-6557 www.fmraudio.com Figure 5: A.R.C. Top Panel F M R A u d i o T T T T T (dB) (dB) A. R. C. Control Description DRIVE Knob — This control increases both the amount of compression as well as increases the mix between the compressed signal versus the uncompressed.
  • Page 15 FMR Audio, +1-512-280-6557 Control Description AMP Attenuator Knob — This is the gain control in the last stage feeding the OUTPUT jack, but it only causes signal attenuation. This control varies the OUTPUT jack signal from 0 to 25dB of attenuation.