User manual RANE RE 14

[. . . ] RE 27 AND RE 14 OPERATING AND SERVICE MANUAL CORPORATION 1. WARRANTY EXPLANATION -- PLEASE READ CAREFULLY Rane offers a limited warranty, described in full on the Limited Warranty card included in the packing materials, which covers both parts and labor necessary to repair any defects in the manufacturing of your Rane product. The warranty period is two (2) years, starting from either(i) the date of retail purchase, as noted on either the sales slip from an authorized Rane dealer or on the warranty registration card sent, in to the factory or, (ii) in the event no proof of purchase date is available, from the date of manufacture, which is coded on the rear of the chassis. If you send in the registration card according to the instructions on the card, or retain your sales slip as proof of purchase, you will receive a full two (2) year warranty period from the date of purchase, regardless of the date of manufacture. [. . . ] The monitor which feeds back soonest should be used for the overall EQ adjustments using pink noise. 8 DIAGRAM III-4: EQUALIZING SPEClFIC MICROPHONE/SPEAKER COMBINATIONS HEAVY LINES INDICATE DIRECT CONNECTIONS TO THE RE 27 and RE 14. Thinner lines show other connections for clarity. Using this test configuration allows the analyzerto look at the specific relationship between each stage microphone/speaker combination. Since both the microphone and stage monitor speaker will exhibit their own individual feedback tendencies, the inter-action between the two can cause pronounced feedback problems. The above configuration will allow you to flatten or "normalize" this interaction without actually getting to feedback levels (which is desirable in many situations). It should be noted that this testing procedure will favor maximum SPL before feedback and not necessarily optimum monitor sound quality. USE ENOUGH PINK NOISE VOLUME TO OVERRIDE BACKGROUND NOISE: There's no need to run deafening pink noise levels to EQ a system. Just be sure that no green/red LED respond when pink noise is turned off (if they do, background noise is causing erroneous readings--pink noise should be turned up higher). USE ±3 dB DISPLAY SETTING FOR LOW FREQUENCY ADJUSTMENTS: The crest factor (peak response) of true pink noise causes considerable LED flutter in the ±1 dB mode, making it difficult to adjust quickly. We recommend that the ±3 dB setting be used on frequencies below 500 Hz or so; use the ±1 dB on the more sensitive mids and highs. THE ANALYZER SECTION CAN BE USED WITH ANY OTHER EQUALIZER: The analyzer section of the RE 27 and RE 14 will respond to whatever the microphone picks up. Simply run pink noise through the desired equalizer (channel) and speaker and use the Rane analyzer to adjust that particular EQ. MONITORING PROGRAM WITH ANALYZER DISPLAY: When the front panel microphone is unplugged, the analyzer display automatically monitors the output of the equalizer section (Channel 2 on the RE 14). Use this feature to identify specific feedback points by watching for red LEDs during the performance; you can then apply EQ exactly where it's needed very quickly. 10 STEP BY STEP PROCEDURE 1. SYSTEM HOOK-UP: Connect the RE 27 or RE 14 into your system as shown in Diagrams III-1 through 111-4, whichever is appropriate. Plug the Rane condenser microphone into the front panel jack. CAUTION: DO NOT PLUG ANY OTHER MICROPHONE INTO THE FRONT PANEL JACK ON THE RE 27 or RE 14: THIS JACK CONTAINS DC POWER SUPPLY VOLTAGE FOR THE RANE CONDENSER MICROPHONE WHICH MAY BE DAMAGING TO OTHER MICROPHONES. For special applications you can use another microphone by patching into a Send/Receive loop on a mixer as described in Rane Note 104 (available on request). BACKGROUND NOISE CHECK: Any background noises such as air conditioners, talking nearby traffic and the like can cause false readings on the analyzer display if the pink noise volume through the speakers is not loud enough to drown these noises out. Before turning on the pink noise, turn up the RTA Level control on the RE 27 or RE 14 until some of the green and red LEDs respond on the display: now you're looking at background noise. Slowly turn the RTA Level control back counter-clockwise until all the green and red LEDs are off, and no background noise is showing on the display. You will now have to run the pink noise volume through the speakers loud enough to make sure that the RTA Level control is not turned clockwise (up) from this setting otherwise the background noise will falsify the readings. [. . . ] unity gain: max, max gain: 92dB 90dB 73dB 69dB RE 14 88dB 84dB 69dB 64dB Frequency Response: 20Hz to 50kHz, +0/-3dB. THD + Noise: less than . 009%, 20-20kHz with +4dBm output. IM Distortion: less than . 02%, 60/7kHz, 4:l. Maximum Gain: +6dB (+3/-0dB) with sliders centered. [. . . ]