Tapco T-231 manuale d’uso

LEVEL LEVEL 1 2 +17 0 -12 +12 +12 -12 +17 0 0 CLIP RANGE 6 dB 12 dB HI - PASS LOW - PASS 40Hz 16kHz CLIP 6 dB 12 dB 40Hz 16kHz BYPASS RANGE HI - PASS LOW - PASS BYPASS POWER ON OFF DUAL 31 - BAND GRAPHIC EQUALIZER 20 31.5 50 100 200 500 1.25k 2.5k 6.3k 12.5k 25 40 80 160 400 1k 2k 5k 10k 63 125 315 800 250 630 1.6k 4k 3.15k 8k 16k 20k BY T•231 20[...]

2 SAFETY INSTRUCTIONS 1. Read Instructions — All the safety and operation instructions should be read before this product is operated. 2. Retain Instructions — The safety and operating instructions should be kept for future reference. 3. Heed W ar nings — All warnings on this product and in these operating instructions should be followed. 4. [...]

Part No. 0009427 Rev. A 1/04 ©2004 LOUD T echnologies Inc. All Rights Reserved. 3 What me, read a manual? Before you begin, please make sure you read the Safety Instructions on page 2 and Getting Started on page 4. Y our new T APCO ® T • 231 is designed to set up quickly and operate easily. W e know it ’ s often seen as a sign of weakness to [...]

4 Getting Started The following steps will help you set up your T • 231, and get the levels just right. SETTINGS: 1. Be sure the T • 231 ’ s POWER switch is off. 2. Set all the sliders to their center positions and all the switches out. CONNECTIONS: 1. Using balanced or unbalanced cables, connect your mixer ’ s main outputs to the T • 231[...]

5 Don ’ t forget to visit our website at www.tapcogear .com for more infor mation about this and other T APCO products. Safety Instructions ................................................................ 2 Getting Started .................................................................... 4 Introduction .........................................[...]

6 Introduction Thank you for choosing a T APCO ® Tweeq ™ 31-band graphic equalizer by Mackie ® . The T APCO product line hails back to the days of T APCO Corporation, Greg Mackie ’ s fi rst company. T APCO revolutionized the audio industry back in 1969 with the very fi rst 6- channel mixer speci fi cally designed for keyboards and rock ‘[...]

7 However , often times a per fectly fl at 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. Y ou can use the T • 231 to roll off t[...]

8 Hookup Diagrams Typical Hookup: In-line with Main Outputs WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. DO NO T REMOVE COVER. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL. AVIS: RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR RISK OF ELECTRIC SHOCK DO NOT OPEN UNBA[...]

9 T • 231 Features 5. BYP ASS This button effectively disables the EQ circuits. Y ou can use this button to compare the EQ ’ d signal to the unprocessed signal. When the BYP ASS button is pushed in, the LED below the BYP ASS button lights. 6. CLIP This LED lights when the output signal is within 5 dB of clipping. It is okay if the CLIP LED blin[...]

10 REAR P ANEL FEA TURES 9. Line Cord Soc k et and Fuse Here is where you connect the detachable line cord that came in the box with your T • 231. Plug the other end of the line cord into an AC outlet properly con fi gured with the voltage required for your particular model (see AC Select Switch next). The fuse is located behind the fuse cover ,[...]

11 GENERAL PREC A UTIONS AND CONSIDERA TIONS 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. Secu[...]

12 Appendix A: Service Infor mation W arranty Ser vice Details concerning Warranty Service are spelled out in the W arranty section on page 19. If you think your T • 231 has a problem, please do everything you can to con fi r m it before calling for service. Doing so might save you from the deprivation of your equalizer and the associated suffer[...]

13 5. Include a legible note stating your name, shipping address (no P .O. boxes), daytime phone number , RA number , and a detailed description of the problem, including how we can duplicate it. 6. Write the RA number in BIG PRINT on top of the box. Units sent to us without the RA number will be refused. 7. Ship the T • 231 to us. W e suggest in[...]

14 Appendix B: Connections 1/4" TS Phone Plugs and Jac ks “ 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. SLEEVE TIP TIP SLEEVE TIP SLEEVE 1/4" TS Unbalanced Wiring: Sleeve = Shield T ip = Hot (+) 1/4" TRS Insert Plugs and Jacks When p[...]

15 Appendix C: T echnical Info T • 231 Speci fi cations 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 k Ω balanced 15 k Ω unbalanced Maximum Input Level: +21 dBu balanced and unbalanced Audio Output Type: Active bala[...]

16 T • 231 Block Diagram This outlines the signal fl ow inside the T • 231. BALANCED LINE INPUT (TRS) UNBALANCED LINE INPUT (RCA) BALANCED LINE INPUT (XLR-F) 1 2 3 CHANNEL 1 LEVEL GRAPHIC EQ FIL TERS RANGE HI-P ASS FIL TER ON OFF 6 dB 6 dB 12 dB 12 dB LOW -P ASS FIL TER BYP ASS ON OFF CLIP DETECT CLIP CHANNEL 1 CHANNEL 1 CHANNEL 2 BALANCED LIN[...]

17 LEVEL LEVEL 1 2 +17 0 -12 +12 +12 -12 +17 0 CLIP RANGE 6 dB 12 dB HI - PASS LOW - PASS 40Hz 16kHz CLIP 6 dB 12 dB 40Hz 16kHz BYPASS RANGE HI - PASS LOW - PASS BYPASS POWER ON OFF DUAL 31 - BAND GRAPHIC EQUALIZER 20 31.5 50 100 200 500 1.25k 2.5k 6.3k 12.5k 25 40 80 160 400 1k 2k 5k 10k 63 125 315 800 250 630 1.6k 4k 3.15k 8k 16k 20k BY BY T • [...]

18 Frequenc y Char t This chart shows the frequency range covered by various instruments and voices. CDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABCDEFGABC VOCAL 25 31 40 50 62 80 100 125 160 200 250 320 400 500 640 800 1K 1.3K 1.6K 2K 2 .5 K 3. 1K 4K 5K 6.2K 8K 10K 13K 16K 20K Soprano Contralto Baritone Bass WOODWIND Piccolo Flute Oboe C[...]

19 T APCO LIMITED W ARRANTY A. LOUD T echnologies Inc. warrants all materials, workmanship and proper operation of this T APCO 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 T echno[...]

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