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JL Audio J2250.1 manual

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Table of contents for the manual

  • Page 1

    Th ank you for p urcha sing a J L Au dio a mplif ier for your autom otive s ound syst em . Y our amplif ie r h as be en d es igne d an d m anufac ture d to ex ac ting stan dard s i n orde r t o en su re yea rs o f mu sic al e njoy ment in your vehicl e. For m ax imum per fo rm ance , we hig hly rec omme nd th at you h ave your ne w amp lif ier ins [...]

  • Page 2

    2 JL Audio PROTE CT Y OUR HE ARI NG! W e value yo u as a lo ng -term customer . For t hat re as on, we u rge you to prac tic e re st ra i nt in t he op erat ion o f t hi s pro duct so as not to da ma ge your hearing and that of o thers in your ve hicle. St udie s h ave show n t h at cont i nuous e xp osu re t o high sound pr essure levels can lead [...]

  • Page 3

    3 PLANNING Y OUR INST ALLA TION I t is importan t tha t y ou take the tim e t o r ead t hi s ma nua l an d t hat you pl an out you r in st al l ation ca ref u l ly . T he fol low in g a re s ome cons idera tion s t hat you mu st t a ke into acc ount when pla n ni ng you r ins ta l lat ion. Cooling Eff iciency Consider ations: The ou ter she ll of y[...]

  • Page 4

    4 JL Audio TYPICAL INST ALLA TION SE QUENCE The follo w ing repr esents the sequence for a t y pica l ampl i f ier i ns ta l lat ion, usi ng a n a ft erm ar ket sou rce u n it or OEM Inter fa ce prod uct . Additio na l steps and dif f eren t proced u res ma y be req u ired in some app l icatio ns. If you h ave a ny qu est ions , ple as e cont ac t [...]

  • Page 5

    5 POWER CONNECTIONS Befor e i nstal ling the a mp l if ier , disconnect the nega tive (ground ) wire from the vehicl e’ s battery . This wi ll prev ent accidental damage to the system, t he veh icle a nd you r p ers on du ri ng ins ta l lat ion. Made in China Speaker Output (Mono) Gr ound FUSE 30A Remot e + 12VDC Th e J2-250.1 ’s “ +1 2 V D C[...]

  • Page 6

    6 JL Audio “REMOTE” TURNON The J 2- 250.1 is tur ned on and o ff usi ng a c onventiona l + 12V remot e t ur n- on l ead, ty pical ly co ntrolled by the source unit’ s remo te turn-on ou tput. Made in China Speaker Output (Mono) Gr ound FUSE 30A Remot e + 12VDC T he ampl if i er w i l l t ur n on when + 12V i s pres ent at its “ Remo te ?[...]

  • Page 7

    7 IMPOR T ANT ! Mak e sur e yo u obse rve corr ect polari ty in makin g th e “H igh-Level I np ut ” co nnect ions. Fa ilur e to do so will res ult in a comp let e loss of signal (no bass). Th e con nec t ions for t he “H ig h-L eve l I nputs” p lu g w ire s a re a s fol low s f rom le f t to ri ght on t he p lug: W hite : L ef t Positi ve ([...]

  • Page 8

    8 JL Audio “LP FIL TER ”  CROSSO VER CONTROL The J 2- 250.1 emp loys a 12dB/ octave lo w-pass (LP) ac t ive f i lter for it s i nter na l c ha nne l. T h is feature is designed to attenuate freque ncies abo ve its fi lt er frequ ency , so that the system ’ s sub woof ers do no t repro duce any aud ible m id ra nge content. Th e low-pas [...]

  • Page 9

    9 “BASS BOOST” CONTROL Th e J2-250.1 i nclude s a sin gle ba nd, bo ost- only bass equali zer co ntrolled b y a ro tar y knob ma rked “Ba ss Boo st ” . This control has a boost range of 0d B ( f ull-counter clockw ise ) to + 9dB (fu l l-clo ck w ise) a nd i s ce ntered at 4 5 H z. LP Filter Fr equency (Hz) Input Sens. Bass Boost Po we r Pr [...]

  • Page 10

    10 JL Audi o SPEAKER OUTPUT Speaker connection to the J 2- 250.1 is stra ightforward and takes place at the far right of t he pow er / spea ker conn ection pa nel. T wo p osit ive (“ + ”) con nec t ions a nd t wo neg ati ve (“ – ”) c onnec t ions are ava i lable v ia a con nec tor l abe led “ Speaker Ou tput (Mono )” . Th e dua l con [...]

  • Page 11

    11 ST A TUS INDICA TOR LIGHTS / PROTECTION CIRCUITRY There are two status ind ica tor lig h ts on the a mpli f ier’s cont rol pa nel . T hes e a re as follow s: 1) “ Power ” (Gr e e n) : L oc ated at t he fa r le ft of t he amplif ier’ s control panel, this LED l ights to indicate that the amplif ier is turned on and operati ng norma l ly .[...]

  • Page 12

    12 J L Au dio APPEN DIX A : Input Sensitivity L ev el Setting Follo wing t he di rections below wil l al lo w the in st al ler to adjus t t he i nput sens itiv it y of e ach amplif ier chan ne l pair simply and easi ly in just a few mi n utes using eq uipme nt which is commo nly ava i lable in i nst a ll ation bay s. Necessary Equipment • D igita[...]

  • Page 13

    13 APPEN DIX B : J2- 250. 1 Spec ificati ons General Specificat ions: Recommended F use V alue: 3 0 A Recommended F use T ype: ANL at battery, 1 x 30 A A TC fuses on amplifier chass is. Input Section: Low- Leve l Inpu t: Sing le- en ded wi th RC A jack s Low-Level Input Range: 200mV - 4V RMS High-Level Input: Single - ende d with m old ed conne c t[...]

  • Page 14

    14 JL Audi o “How do I pro perly set the i nput sensiti vity on my am plifier” Plea se ref er to Appen di x A ( page 12 ) to set the inpu t sensi tivit y fo r ma x imu m, low-d istor t ion out put . “My amp lif ier do esn’t tu rn o n” Che ck the fuse, not just visua lly , bu t with a continuity meter . It is pos sible for a f use to have [...]

  • Page 15

    15 “My amp lif ier tu rns on, but the re is n o ou tpu t ” Che ck the inpu t signa l using an A C voltmeter to measure the vol tage from the so urce unit while an appro priate test to ne is pla yed through the source unit ( disconnect the input cables f rom t he ampl i fi er pr ior to t hi s te st). T he f reque ncy us ed sho uld be in the ra n[...]

  • Page 16

    16 JL Audi o INST ALLA TION NO TES: Use this diagram to document your amplifier’ s switch and control positions. LP Filter Fr equency (Hz) Input Sens. Bass Boost Po we r Pr otect Remote Le vel Po rt LEFT RIGHT LEFT RIGHT Preamp Outputs Amplifier Inputs min max 60 240 O +9dB High-Level Inputs[...]

  • Page 17

    17 LP Filter Fr equency (Hz) Input Sens. Bass Boost Po we r Pr otect Remote Le vel Po rt LEFT RIGHT LEFT RIGHT Preamp Outputs Amplifier Inputs min max 60 240 O +9dB High-Level Inputs[...]

  • Page 18

    18 JL Audi o INST ALLA TION NO TES:[...]

  • Page 19

    19 INST ALLA TION NO TES:[...]

  • Page 20

    LIMIT ED WA RR ANTY  AMP LIFIERS U SA JL Audio warra nts this prod uct to be free of def ec ts in materials and wor k manship fo r a period of o ne ( 1 ) year from the original d at e of purchase. This wa rranty is not transferrable and ap plies o nly to the origina l p urchaser from an au thorized JL Audio dealer . Should serv ice be nece[...]