Harmanメーカー286の使用説明書/サービス説明書
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286 U s e r Ma n u a l M ic P re a mp/ Pro ce ss o r Professional A udio Equipment ®.
286 IMPOR T ANT SAFET Y INFORMA TION W ARNING FOR Y OUR PRO TECTION READ THE FOLLO WING: KEEP THESE INSTR UCTIONS HEED ALL W ARNINGS FOLLO W ALL INSTR UCTIONS THE APP ARA TUS SHALL NO T BE EXPOSED T O DRIPPING OR SPLASHING LIQUID AND NO OBJECT FILLED WITHI LIQUID , SUCH AS V ASES, SHALL BE PLACED ON THE APP ARA TUS.
286 DecLara tIon of conforMIty Manufacturer’ s Name: dbx Professional Products Manufacturer’ s Address: 8760 S. Sandy Parkway Sandy , Utah 84070, USA declares that the product: Product name: dbx 286s Note: Product name may be suffixed by the EU.
286 Section 1 - Introduction ........................................1 1.1 Service Con tact Inf o ...................................... 2 1.2 W arr anty ...................................................... 3 Section 2- Operating Controls ..........
286 Section 1 - Introduction Congr atulati ons on ch oosin g th e dbx 286s Mic Pr eamp/Pr ocessor . The 286s is a powerful, user-frien dly unit, pr ovidin g con cise an d intuitive con tr ols for all .
286 1 .1 Service Contact Info If you requir e techni cal support, contact dbx Custom er Servi ce . Be pr epar ed to accurately describe th e pr oblem. Know th e seri al n umber of your unit - this is prin ted on a sti ck er attached to th e bottom pan el.
286 1 .2 W arranty This warran ty is vali d only for th e ori gin al purchaser an d only in th e United States . 1. The warr an ty registr ati on car d that accompanies this pr od uct m ust be m ailed within 30 days after pur chase d ate to valid ate this warr an ty .
286 2.1 Rear Panel s s s s s MIC INPUT Jack The 286s MI C INPUT jack supports pr ofessi on al an d hom e stu dio mi cr oph ones by acceptin g either balan ced or unbalan ced sign al thr ough an XLR conn ector . Pins 2 an d 3 ar e symmetri cally balan ced and floatin g; th us , either can be used as “H O T” without difficulty .
286 T o use the INSERT jack to MUL T the preamp out (i.e ., to provid e an output with a buffer ed version o f th e sign al after th e Mi c Preamp cir cuitry , but before th e Pr ocessing Secti on), in sert a Mon o 1/4” plug fully in to the INSERT jack, th en pull th e plug out on e click.
286 of th e mi c sign al an d ad dition al gain e xceeds th e cir cuit’s capabiliti es; red u ce gain vi a the MIC G AIN con trol. Set th e MI C G AIN contr ol so that th e CLIP LED never li gh ts . The LEVEL LEDs can also be used to ch eck th e stren gth o f th e input sign al.
286 Compr essor DRIVE Control The DRIVE con tr ol determin es th e over all amoun t o f gain red u cti on by setting th e si gnal level goin g in to the gain con tr ol cir cuitry . T urnin g DRIVE clockwise will incr ease th e input sign al, an d ther ef or e incr ease th e amoun t o f appli ed gain red u ction.
286 Enhancer Note: The low an d high fr equen cy enhancers ar e o ff wh en their r espective DET AIL controls are set to OFF . LF DET AIL Control The 286s Low Fr equen cy enhancem en t sim ultaneously appli es an 80Hz boost an d 250Hz cut to the pr ogr am.
286 Readjust as need ed to gate out n oise -- extern al, as well as hiss fr om th e unit. The 286s other pr ocessin g can add substan ti al gain to a si gnal, especi ally at hi gher settin gs , th ereby incr easin g the n oise floor . Output GAIN (dB) Control and CLIP LED The OUTPUT G AIN con trol sets th e level at th e lin e output.
286 10 Section 3 - Basic Operation 3.1 Connecting the 2 8 6s to Y our S ystem The 286s can be used with an y low-level mi croph on e si gnal (vi a th e MI C INPUT) or any line-level d evi ce (via th e LINE INPUT).
286 Section 3 Basic Operation 11 286s Press th e HI GHP ASS button In to cut signals below 80Hz by 18dB/octave , effectively filtering out mic pr o ximity effects, h um, rumble , wind and oth er low frequen cy “un d esirables .” Use th e MI C GAIN con tr ol to achi eve the best d efiniti on and char acter possible fr om your micr oph one .
286 Section 3 Basic Operation 12 by blowing air thr ough a con stricted (n arr ow) m outh opening or acr oss th e edg e o f th e teeth, as in the “s” an d “sh” in “sash.
286 Section 3 Basic Operation 13 286s to pass. If th e input si gnal is below th e thr esh old, th e gate “ closes” and the input si gnal is attenu ated . With suffici en t atten uati on, it effectively cuts that si gnal o ff. On th e 286s , the amoun t o f attenu ati on is set with th e EXP ANSION RA TIO con tr ol.
286 Section 3 Basic Operation 14 slow the compr essor’s r elease time , set the DENSITY contr ol to 0. Set the De-Esser fr equen cy contr ol to 4kHz (12:00 positi on). Adjust th e De-Esser THRESH OLD contr ol to r ed uce th e vocalist’s sibilan ce .
286 Section 3 Basic Operation 15 286s Enhancer Note: The Hi gh and Low Fr equen cy Enhan cers are OFF wh en th eir respective DET AIL contr ols are set to th e “o ff” position.
286 Section 4 Problems, Possible Causes, Solutions 16 Section 4 - Problems, Possible Causes, Solutions Always verify that the pr oblem is n ot in the sour ce m ateri al being fed in to th e 286s , or in the oth er parts o f the system. If you still have problem s wh en using th e 286s , con sid er th e followin g r emedi es .
286 Section 4 Problems, Possible Causes, Solutions 17 286s that the r ed (-) THRESH OLD LED (located to the ri gh t o f the EXP ANSION RA TIO con trol) d oes not li gh t until th e r equir ed sign al is finish ed.
286 Section 5 T echnical Support and Factory Service 18 Section 5 - T echnical Support and Factory Service The 286s is an all-soli d-state pr odu ct with compon en ts chosen f or hi gh perf orman ce an d ex cellen t reli ability .
286 19 286s MIC INPUT Floating balan ced , Pin 2 Hot Impedance ~ 4.2k Ω Balanced Maximum Level 0.25Vrms , Gain=30dB Gain Adjustmen t Rang e +0dB ... +60dB Phantom P ower +48VDC, applied to XLR pin s 2 an d 3 through 6.
286 Section 6 T echnical Specifications 20 ENHANCER HF Detail Characteristi c Progr am-con trolled sh elvin g equ alizer , appro xim ately 15dB maxim um HF boost LF detail Char acteristi c Bell-shaped boost @ 80Hz, bell-shaped cut @250Hz, rati o is appr o ximately 2:1 EXP ANDER/GA TE Threshold Ran ge OFF .
286 21 286s Section 7 - Block Diagram.
286 22 286s.
286 23 286s.
286 8760 South Sand y P arkway • Sand y , U tah 84070 Ph on e: (801) 568-7660 • Fax (801) 568-7662 In t’l Fax: (801) 568-7583 Visit us onlin e at www .
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