U Guid Elctnic Cv Ntwk XM66 Vaiabl Fquncy XM9 24 db/ctav XM16 48 db/ctav XM44 24/48 db/ctav XM26 24 db/ctav Tub XM46 24 db/ctav Paiv Lin Lvl XM126 24 db/ctav Tub Machand Elctnic Inc. Rcht, NY (585) 423 462 www.machandlc.cm
Th lctnic cv i ud t div individual ludpak f paat ptin f th audi fquncy pctum. A tw way cv i ud f ba and high fquncy pak. A th way cv i ud whn diving ba, midang and high fquncy pak. Th ignal fm th pamp i pad t th lctnic cv ntwk. Th utput f th cv ntwk a thn cnnctd t th pw amplifi f th individual ludpak a in Figu 1. A typical cnfiguatin lik thi might hav th cv fquncy t at 3 t Hz, dpnding n th typ f ludpak ud. Whn ud with ubwf a lw fquncy pak, th typical cv fquncy i aund Hz. Th ang i 5 t 15 Hz f mt ubwf. Whn th cv fquncy i blw Hz th uually i n t infmatin pnt fm th und f th ubwf, and a cmmn ubwf can b ud. Figu 3 hw hw t u th cv with a cmmn ubwf. Th um witch n th cv fnt P a m p Out Out C v In In High High Out Lw Out Lw High High Out Lw Out Lw Figu 1 Tw-way ytm ha paat amplifi f high and lw ang pak panl cau th utput f bth lw pa channl t b ummd tgth. Bth utput will hav th am ummd ignal n thm, and ith n can thu b ud t div h cmmn ubwf. Th advantag f a cmmn ubwf i m than jut ct. Bcau th i nly n ubwf pnt, ftn a lag unit can b chn, with an xtndd ba ang. It i al pibl t div m than tw pak p channl. Figu 2 hw a th way ytm with wf, midang and twt. Ching th cv fquncy and lp At fqunci blw th cv fquncy th ignal will g t th lw pa utput. At fqunci abv th cv fquncy th ignal will g t th high pa utput. Th i a gin aund th cv pint wh th ignal will cm ut f bth th high pa utput and th lw pa utput. F h cv ntwk with a lp f 24 db/ctav (XM6, XM9 and XM26) th width f thi gin i abut 1/2 ctav. F th XM16, with a lp f 48 db/ctav, th width f thi gin i halvd t 1/4 ctav. Figu 4 hw th fquncy pn f th 24 db/ctav cv ntwk (XM6, XM9 and XM26). Th figu i dawn f a cv fquncy f Hz. F th cv fqunci 2 217 Machand Elctnic Inc. www.machandlc.cm.
th am figu appli, with th fquncy cal cald. Nt that bth th high pa pn and th lw pa pn a dwn xactly 6 db at th cv pint f Hz. Thi man that at thi fquncy th amplitud i xactly half. Adding th high pa and lw pa tgth um t unity. A a matt f fact th um f th high pa and th lw pa pn i unity f all fqunci. Thi i why th filt i calld a cntant vltag ntwk. It i al calld a Linkwitz-Rily ntwk, aft th tw wit wh fit intducd thi cncpt in th audi wld. Th fquncy pn f th pha f th 24 db/ctav ntwk i hwn in Figu 5. Th fquncy pn f th pha i th am f th high pa and th lw pa utput. Nt that at th cv pint th pha hift i xactly 18 dg. Figu 9 hw th fquncy pn f th XM16 cv ntwk. Thi ntwk ha a lp f 48 db/ctav. Figu 8 hw th pha pn f th XM16 cv ntwk. Nt that th pha hift f th XM16 i twic that f th th ntwk. Th XM16 d nt hav a Twt Mid Wf In In P a m p Out Out C v High Out Mid Out Lw Out High Out Mid Out Lw Out Twt Mid Wf Figu 2 Th-way ytm ha paat amplifi f twt, midang and wf damping cntl. Th chic f th cv pint i a difficult n, and ftn m tial and i ndd f achiving bt ult. With th 24 db/ctav cv ntwk a gd ul f thumb i t t th cv pint at lat n half t n ctav away fm th cutff fquncy f th pak. Thu a atllit with a cutff fquncy f 5 Hz at th lw and that i ud with a ubwf qui a cv fquncy f 75 t Hz. Th ubwf huld thn al hav a ang xtnding half t n ctav abv th cv fquncy. In thi ca, if Hz wa chn, th ubwf huld hav a ang f at lat 2 Hz. 3 217 Machand Elctnic Inc. www.machandlc.cm.
A 48 db/ctav cv huld b chn if thi chic i nt pactical. Thi cv with th tp lp can b ud with a cv fquncy 1/4 ctav away fm th ludpak cutff pint. Changing th cv fquncy Fquncy mdul Th XM6 cv ntwk ha a cntl n th fnt panl t chang th cv fquncy. Th fquncy i hwn n a fu digit LED numic diplay n th fnt panl f th unit. Th ang i 2 Hz t 45 Hz, and th fquncy can b changd in tp f abut 5%. A ttal f 16 fqunci a thu availabl. Thi nic fatu cm with a ct. Th XM9, XM16 and XM26 u fquncy mdul t chang th cv fquncy. Th lw ct mdul a pluggd int a cnnct in th unit. Th pw ha t b hut ff and th tp cv f th unit mvd. Th mdul f th XM9 ha 4 it n it. Th mdul f th XM16 ha 8 it In P a m p Out Out C v In Satllit Satllit High Out Lw Out High Out Lw Out Sum Switch up Cmmn Subwf Figu 3 Tw-way ytm with cmmn ubwf. Th tw lw pa channl a ummd whn th um md i lctd. and th mdul f th XM26 ha 4 it and fu capacit. Th XM9 qui tw mdul and th XM16 and XM16 qui fu mdul f ach cv fquncy chn. Th mdul a availabl f mt fqunci. Th manual f th individual unit hav fmula in thm t cmput th valu f th it and capacit. Whn ding placmnt mdul nly th did fqunci nd b pcifid. In d t plac th fquncy mdul th tp cv f th unit nd t b mvd. Und th tw cw n ach id f th unit and lift th cv. Mak u th pw t th unit i tund ff. Pcd a fllw: XM9 Each cicuit bad ha n fquncy mdul. Th am mdul t bth th high pa and th lw pa cv pint. It i intd in a ckt. Th fquncy mdul ha fu it n it. Rplac ach mdul with th nw mdul. 4 217 Machand Elctnic Inc. www.machandlc.cm.
XM16 Each cicuit bad ha tw fquncy mdul n it, n f th lw pa and n f th high pa cv pint. Th tw pint a uually t at th am fquncy. Each mdul ha ight it n it. Rplac ach mdul with th nw mdul. XM26 Each cicuit bad ha tw fquncy mdul n it, n f th lw pa and n f th high pa cv pint. Th tw pint a uually t at th am fquncy. Each mdul i Fquncy pn f th amplitud f th futh d cv ntw k. Th lp a 24 db/ctav. Th amplitud f lw pa and high pa add up t unity ( db). db - -2 High pa Lw pa -3-4 -5 Hz Figu 4 a mall cicuit bad with gld platd cntact fing. Mdul hav pciin capacit and it n thm. Th mdul n th lft f ach cicuit bad i th lw-pa mdul; th th n i th high pa mdul. Mak u t int th mdul that th cmpnnt n it fac away fm th tub. Th tub gt ht and might mlt th capacit. Aft placing th mdul put th cv back n and intall th fu cw. Lvl cntl Th lvl cntl n th fnt f th cabint a ud t t th vlum f ach ludpak. Th a val way t adjut th cntl. A gd way t d thi i t tat ut by tting all cntl in th cnt (12 clck) pitin. Litn t m muic and adjut th cntl f pp vlum fm ach pak. If a fquncy gnat i availabl, hk th gnat up t th input f th cv. Swp th fquncy fm way blw th cv pint t way abv th cv pint. Whn th fquncy c th cv pint th und huld hift fm n pak t th th, but th vlum huld main th am. 36 Fquncy pn f th pha f th futh d ntw k. Th pha f bth high pa and lw pa a th am. 3 24 18 12 6 Figu 5 A thid way i t u a pink ni gnat and a pctum analyz with a gd micphn. Adjut th lvl cntl f a flat pn ac th cv pint. 5 217 Machand Elctnic Inc. www.machandlc.cm.
Smtim th mthd that u intumnt ult in tting that a nt quit plaing. If that i th ca ty t adjut th cntl until th und i bt. Aft all, it i th final und that i imptant. Th damping cntl Th damping cntl allw adjuting th fquncy pn at th cv pint. Figu 6 hw th ffct f th damping cntl. Th figu hw th fquncy pn f th maximum and minimum tting. Thi cntl i nly availabl n th XM6 and th XM9. Th XM16 and th XM26 d nt hav a damping cntl. Th damping cntl adjut bth high pa and lw pa imultanuly. Thi cntl i uful f fin-tuning th m fquncy pn. Smtim it happn that at th cv pint th i a mall pak dip in th fquncy Th fquncy pn f th amplitud f tw tting f th damping cntl. +5 db - -2-4 db -3-4 -5 Figu 6 pn. Thi i caud by th fact that at thi fquncy th und i pduc by bth high and lw pak imultanuly. It i ftn vy had t ha thi dip, but it can aily b n if a fquncy pctum analyz i ud. 36 Fquncy pn f th pha f tw valu f th damping cnl. Th pha f high pa and lw pa a th am +5 db 3 24-4 db 18 12 6 Figu 7 6 217 Machand Elctnic Inc. www.machandlc.cm.
72 66 6 54 48 42 36 3 24 18 12 6 Fquncy pn f th pha f th XM16 ighth d cv ntw k. Th pha f high pa and lw pa a th am Figu 8 Th fquncy pn f th amplitud f th XM16 ighth d cv ntw k. - -2-3 -4-5 Figu 9 7 217 Machand Elctnic Inc. www.machandlc.cm.
P a m p Out Twt Out C v In Paiv Cv In Mid High Out Lw Out Wf High Out Lw Out Twt Paiv Cv Mid Wf Hybid ytm with paiv cv n th high and activ cv n th lw 8 217 Machand Elctnic Inc. www.machandlc.cm.
Vltag lct witch Bf witching n th pw mak u th pw lct witch n th a i t t th pp vltag. Thi i imptant. Th wng tting may damag th quipmnt. Th cv a cmpatibl with bth 5Hz and 6Hz. U th 115V tting wh th pw lin vltag i V t 127VAC. Thi i typical in USA, Canada, Cntal Amica and Japan U th 22V tting wh th pw lin vltag i 22V t 24VAC. Thi i typical in Eup, Afica and mt f Aia. Fm (c)http://n.wikipdia.g/wiki/fil:wldmap_vltag%26fquncy.png 9 217 Machand Elctnic Inc. www.machandlc.cm.