Instruction/ maintenance manual of the product J2250.1 JL Audio
Go to page of 20
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.
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.
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.
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.
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.
6 JL Audio “REMOTE” TURNON 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.
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).
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.
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.
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 )” .
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 .
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.
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.
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 .
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).
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.
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.
18 JL Audi o INST ALLA TION NO TES:.
19 INST ALLA TION NO TES:.
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 .
An important point after buying a device JL Audio J2250.1 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought JL Audio J2250.1 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data JL Audio J2250.1 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, JL Audio J2250.1 you will learn all the available features of the product, as well as information on its operation. The information that you get JL Audio J2250.1 will certainly help you make a decision on the purchase.
If you already are a holder of JL Audio J2250.1, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime JL Audio J2250.1.
However, one of the most important roles played by the user manual is to help in solving problems with JL Audio J2250.1. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device JL Audio J2250.1 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
