User manual PRESONUS EUREKA

[. . . ] EUREKA MICROPHONE PREAMPLIFIER COMPRESSOR PARAMETRIC EQUALIZER USER' MANUAL S v ersion 1. 0 ?All rights reserved. WARRANTY PreSonus Limited Warranty PreSonus Audio Electronics Inc. warrants this product to be free of defects in material and workmanship for a period of one year from the date of original retail purchase. To be protected by this warranty, the purchaser must complete and return the enclosed warranty card within 14 days of purchase. [. . . ] This may occur due to high output level from a microphone or other device. Padding the input serves to provide increased " headroom"for the operator while lessening the likelihood of input signal overload. When pushed in, the 80Hz button causes all frequencies below 80Hz to be attenuated (dropped) by 12dB. For example, the 80Hz filter can help to reduce the " boominess"or "muddiness"of a vocal and improve the overall clarity. Use the phase reverse when recording with more than one open microphone to combat phase cancellation between microphones. When an instrument is plugged into the instrument input, the microphone preamplifier is bypassed and the Eureka becomes an active instrument preamplifier. 2. 3 COMPRESSOR 10 CONTROLS & CONNECTIO NS THRESHOLD: Sets the level at which compression begins. The below and above LED' over the Threshold knob indicate whether the input signal is s below or above the Threshold setting. When the signal is above the Threshold setting, it becomes ` eligible' for compression. Basically, as you turn the Threshold knob counter-clockwise, the input signal is compressed. (If you have a ratio setting of greater than 1:1. ) RATIO: Sets the compression slope. For example, if you have the Ratio set to 2:1, any signal level above the Threshold setting will be compressed at a compression ratio of 2:1. This simple means that that for every 1dB of level increase into the compressor, the output will only increase ½ dB, thus producing a compression Gain reduction of 0. 5 db. As you increase the Ratio, the compressor gradually becomes a limiter. A limiter is defined as a processor that limits the level of signal to the setting of the Threshold. For example, if you have the Threshold knob set at 0 dB, and the Ratio turned fully clockwise, the Compressor acts as a Limiter at 0 dB. BYPASS: When pushed in, the EQ is no longer equalizing the signal. 12 CONTROLS & CONNECTIO NS 2. 5 MASTER MASTER (LEVEL): This control adjusts the output level of the EUREKA. It is useful for adjusting the overall output level up or down to match the optimum input level of a recorder, mixer, etc. GR TO METER: When pushed the VU meter reads Gain Reduction of the Compressor. When not pushed, the VU meter reads output level. 2. 4 BACK PANEL BASIC LAYOUT 13 CONTROLS & CONNECTIO NS Connectors All Input and Output connectors are servo balanced. XLR or ¼"TRS with the following wiring standard: XLR/TRS PIN 1 / Sleeve PIN 2/ Tip PIN 3/ Ring GND High Low (+) (-) INSERT: Return and Send connectors are provided for use in conjunction with audio process devices such as reverbs, delays, de-essers, etc. NOTE: The LINE IN jack does not work unless the LINE button on the front of the unit is pushed in. 2. 7 POWER SUPPLY 14 CONTROLS & CONNECTIO NS The Power Jack on your EUREKA accepts a standard IEC cord like those found on most computers and professional recorders. Note: The input power voltage is set at the factory to correspond with the country in which it was shipped. . 15 3 OPERATION 3. 1 MICROPHONES The Eureka works great with all types of microphones including dynamic, ribbon and condenser microphones. [. . . ] -112dBu (+12dB gain) EIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -127dB THD + Noise(0% Saturation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0. 005% THD + Noise (Full Saturation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0. 5% Microphone Input Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]