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JL Audio A1800 manual

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Table of contents for the manual

  • Page 1

    Th ank you for p urcha sing a J L Audio amp lifi er for your automotive sound system . Y our ampl ifi er ha s be en de sig ned an d manufac ture d to ex act ing stan dard s in orde r to en sure year s of mus ical e njoy ment in you r vehicl e. For ma xi mum per fo rm ance an d ex ten ded wa rrant y cove rage, we h ighly re commen d that you h ave y[...]

  • Page 2

    PLANNING Y OUR INST ALLA TION I t is im p o rtan t th at yo u tak e th e tim e t o r ead t hi s manu a l and t hat you pl an out you r in st al l ation c a ref ul ly. The fol low ing a re s ome con si deratio ns that you m ust take in to acc oun t whe n planning your installatio n. Coo ling E f fi cie nc y Cons ide rat ion s: Th e outer she ll of y[...]

  • Page 3

    POWER CONNECTIONS Before i ns ta l li ng t he a mpli f ier, dis con nec t the negat ive ( gr ound) w i re from t he ve hic le’ s b att er y . Th is w i l l prevent a ccid enta l d am age to t he s yst em, t he veh icle a nd you r body du r in g in st al l ation . Th e A1 80 0’s “ +1 2 V D C ” a nd “ Ground ” con nec t ions a re de sig n[...]

  • Page 4

    AMPLIFIER C ONTROLS 1) “ I n p u t S e n s . ”: Once the a pp rop r iate “ Input Vo l t a g e ” ra nge ha s be en sele ct ed, t he c ontr ol labeled “ In put Sens. ” loc ated i n t he “ Ampli fier Con trol s ” sec t ion ca n be u se d to match t he sou rce u nit ’ s out put volt age to t he i nput st age of t he a mpli f ier for m[...]

  • Page 5

    The p reamp o utput signal is n ot a ffected by t he “ Bass Boost ” proce ssi ng se lec ted for t he a mpli f ier or by a ny cros sover f i lte r sele cte d (if t he input signal is f ul l- range, the preamp outpu t will be full - rang e ) . Th e sig na l level of t he “ Preamp Output ” is line- lev el (lo w vo ltag e) , reg ardless of the [...]

  • Page 6

    JL AUDIO A1800 11 10 JL AUDIO A1800 SERVICING YOUR JL AUDIO AMPLIFIER If yo ur am p lifier fails o r malfuncti ons , p lease re turn it to yo ur a u tho rized JL A udio deale r s o that it may be sen t in to JL A udio for ser vice. Th ere ar e no use r ser v ice able pa r ts or f u ses i ns ide t he ampl i f ier. The u niqu e natu re of t he ci rcu[...]

  • Page 7

    APPEN DIX B: Pre cis e Freq uen cy S ele c tio n Char t “FIL TER FREQ” AMP FIL TER Detent Panel Actual Number Marking Fr eq. Full c ounter-clockwise: 42 01 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 02 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 03 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 04 . . [...]

  • Page 8

    JL AUDIO A1800 15 “My a mpl if ier s hut s of f onc e in a wh ile , usu all y at hig he r volu mes ” Che ck your volt age s ourc e and g rou nd ing p oint . The p ower supply of t he A1 80 0 w i ll op erat e wit h c ha rgi ng s yst em volta ges do w n t o 1 0 V . Sh utdo w n p rob lem s a t highe r v olume leve ls ca n oc cu r when t he c ha rg[...]

  • Page 9

    JL AUDIO A1800 17 16 JL AUDIO A1800 INST ALLA TION NO TES: Use this diagram to document your amplifier’ s switch and control positions. Bass Boost Controls Input Voltage Low | H igh CH 1 (Left) Input Sens. LP Filter Filter F req. (Hz) 40 45 55 65 80 10 0 200 Bass Boost Remote Bass Port Power Protect CH 2 (Right) Pre-Outs[...]

  • Page 10

    JL AUDIO A1800 19 18 JL AUDIO A1800 INST ALLA TION NO TES: INST ALLA TION NO TES:[...]

  • Page 11

    LIMITE D W ARR ANTY  AMPLI FIE RS USA JL AUDIO wa rr a nts t hi s produc t to be f ree of d efec ts i n mat eri a ls a nd work ma ns hip for a pe rio d of ninety ( 90 ) days f ro m the o riginal da te of purch ase. The warranty t erm is e xten ded to two (2 ) y ea rs if installatio n is perform ed or appr oved by an au t ho r ized JL A U D[...]