20 25 31.5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1k 1.25k 1.6k 2k 2.5k 3.15k 4k 5k 6.3k 8k 10k 12.5k 16k 20k 1 LEVEL +12 +17 1 0 0 HI-PASS LOW-PASS 40Hz 16kHz HI-PASS LOW-PASS 40Hz 16kHz BYPASS RANGE -12 DUAL 31- BAND GRAPHIC EQUALIZER T•231 BY 2 +12 +17 2 0 CLIP BYPASS 6dB 12dB ON RANGE OFF POWER -12 20 25 31.5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1k 1.25k 1.6k 2k 2.5k 3.15k 4k 5k 6.3k 8k 10k 12.
CAUTION AVIS RISK OF ELECTRIC SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER. CONFIER L'ENTRETIEN AU PERSONNEL QUALIFIE.
18. Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary considerably in susceptibility to noise-induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time. The U.S. Government’s Occupational Safety and Health Administration (OSHA) has specified the permissible noise level exposures shown in the following chart.
Getting Started The following steps will help you set up your T•231, and get the levels just right. SETTINGS: SET THE CONTROLS: 1. Be sure the T•231’s POWER switch is off. 1. Make sure your signal source is turned up and delivering signal to the T•231. The signal should pass through the T•231 unaffected because the CHAN 1 and 2 BYPASS buttons are out and the signal processing circuitry is bypassed. 2. Set all the sliders to their center positions and all the switches out. CONNECTIONS: 1.
Contents Safety Instructions................................................................2 Getting Started ....................................................................4 Introduction..........................................................................6 Hookup Diagrams................................................................8 Typical Hookup: In-line with Main Outputs.....................8 Alternate Hookup: Individual Channel or Main Inserts ..8 T•231 Features ...........................
Introduction Thank you for choosing a TAPCO® Tweeq™ 31-band graphic equalizer by Mackie®. The TAPCO product line hails back to the days of TAPCO Corporation, Greg Mackie’s first company. TAPCO revolutionized the audio industry back in 1969 with the very first 6channel mixer specifically designed for keyboards and rock ‘N’ roll PA. In essence, TAPCO redefined the price performance ratio and made high-quality professional audio mixers accessible to virtually anyone.
However, often times a perfectly flat frequency response is not what you want in a live sound application. For example, if the low-frequency response of the loudspeakers only extends to 50 Hz, there is no need to amplify the frequencies in the lowest octave of the audio frequency range, 20 Hz to 40 Hz. You can use the T•231 to roll off these frequencies, which reduces the drain on the amplifier and provides more power to amplify the higher, more useful frequencies.
Hookup Diagrams Typical Hookup: In-line with Main Outputs FROM MIXING CONSOLE LEFT AND RIGHT MAIN OUTPUTS SERIAL / DATE CODE CHANNEL 1 RISK OF FIRE WARNING NO OUTDOOR USE REPLACE FUSE AS MARKED 115V BROUGHT TO YOU BY THE GROOVY FOLKS IN WOODINVILLE, WA, USA MANUFACTURED IN CHINA • FABRIQUE AU CHINE "TAPCO" AND "MACKIE" ARE REGISTERED TRADEMARKS OF LOUD TECHNOLOGIES INC. • COPYRIGHT ©2003 OUT IN OUT UNBAL BAL/UNBAL CHANNEL 2 WWW.TAPCOGEAR.
T•231 Features 20 25 31.5 40 50 63 80 100 125 160 200 250 315 2 400 500 630 800 1k 1.25k 1.6k 2k 2.5k 3.15k 4k 5k 6.3k 8k 10k 12.5k 16k 20k +12 1 3 4 LEVEL 5 7 +17 1 HI -PASS LOW-PASS 40Hz 16kHz HI -PASS LOW-PASS BYPASS RANGE 0 -12 DUAL 31- BAND GRAPHIC EQUALIZER 1 T•231 BY 2 +12 +17 2 0 CLIP BYPASS 6dB 12dB RANGE ON OFF 8 POWER -12 20 25 31.5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1k 1.25k 1.6k 2k 2.5k 3.
SERIAL / DATE CODE 9 CHANNEL 1 RISK OF FIRE REPLACE FUSE AS MARKED WARNING NO OUTDOOR USE OUT IN OUT 12 13 OUT IN IN 115V 10 BROUGHT TO YOU BY THE GROOVY FOLKS IN WOODINVILLE, WA, USA MANUFACTURED IN CHINA • FABRIQUE AU CHINE "TAPCO" AND "MACKIE" ARE REGISTERED TRADEMARKS OF LOUD TECHNOLOGIES INC. • COPYRIGHT ©2003 WWW.TAPCOGEAR.
GENERAL PRECAUTIONS AND CONSIDERATIONS Rack Mounting The T•231 is designed to be mounted in a standard rack. It requires two rack spaces (2U = 3.5”). It also requires 7.5” depth inside the rack, not counting the rear connectors. When designing your rack, put the heavier items at the bottom and the lighter items toward the top. Secure the front panel of the T•231 to the front of the rack using four screws with soft washers to prevent scratching the panel.
Appendix A: Service Information Warranty Service No Sound Details concerning Warranty Service are spelled out in the Warranty section on page 19. If you think your T•231 has a problem, please do everything you can to confirm it before calling for service. Doing so might save you from the deprivation of your equalizer and the associated suffering. These may sound obvious to you, but here are some things you can check. Read on.
Repair Service for TAPCO products is available from one of our authorized domestic service centers or at our factory, located in sunny Woodinville, Washington. Service for TAPCO products living outside the United States can be obtained through local dealers or distributors. If your T•231 needs service, follow these instructions: 1. Review the preceding troubleshooting suggestions. Please. 2.
Appendix B: Connections XLR Connectors 1/4" TS Phone Plugs and Jacks The inputs and outputs use 3-pin male and female XLR connectors. They are wired as follows, according to standards specified by the AES (Audio Engineering Society). “TS” stands for Tip-Sleeve, the two connection points available on a mono 1/4" phone jack or plug. They are used for unbalanced signals.
Appendix C: Technical Info T•231 Specifications Frequency Response 20 Hz to 20 kHz (+0, –1 dB) 20 Hz to 50 kHz (+0, –3 dB) Audio Input Type: Active balanced XLR and 1/4" jacks Unbalanced RCA jack Impedance: 20 kΩ balanced 15 kΩ unbalanced Maximum Input Level: +21 dBu balanced and unbalanced Audio Output Type: Active balanced XLR and 1/4" jacks Unbalanced RCA jack Impedance: <600 Ω Maximum Output Level: +18 dBu THD+N @ 1 kHz, +4 dBu: 0.
13 CHANNEL 2 13 CHANNEL 1 2 UNBALANCED LINE INPUT (RCA) BALANCED LINE INPUT (TRS) 9 FUSE TAPCO T•231 BLOCK DIAGRAM 12.24.
20 9 25 25 31.5 BY 31.5 315mA 250V T RISK OF FIRE REPLACE FUSE AS MARKED 2 1 20 50 50 63 63 AC 100-120V, 60Hz AC 200-240V, 50HZ RATED INPUT: 12.5W 40 40 100 125 160 100 125 11 10 SERIAL / DATE CODE 80 LIFT GND 160 T•231 80 115V 200 200 250 250 315 315 500 500 630 1 630 800 800 1k 1k 1.25k 1.6k 1.25k 1.6k 2k 2k 2.5k 3.15k 2.5k 3.
Frequency Chart This chart shows the frequency range covered by various instruments and voices. Typical Frequency of each Instrument and Voice Middle C CDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABC 20 25 31 40 50 62 80 100 125 160 200 250 320 400 500 640 800 1K 1.3K 1.6K 2K 2.5K 3.1K 4K 5K 6.
TAPCO LIMITED WARRANTY A. LOUD Technologies Inc. warrants all materials, workmanship and proper operation of this TAPCO product for a period of one year from the original date of purchase. If any defects are found in the materials or workmanship, or if the product fails to function properly during the applicable warranty period, LOUD Technologies, at its option, will repair or replace the product. This warranty applies only to equipment sold and delivered within the U.S.
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