User manual ROCKFORD FOSGATE PUNCH4020 DSM

[. . . ] PuNcH 4O2O DSM 4-CHANNEL AnnPLTFTER I NsrnLLATroN Rockford Fosgate Rockford Corporation 546 South Rockford Drive Tempe, Arizona 85281 U. S. A. ln U. S. A. , (602\ 967 -3565 ln Canada, call Korbon (9OS) 567-1929 ln Europe, Fax (49) 4207-BO125O ln japan, Fax (Bl) 559-79-1265 10/94 MAN-OBOB. A & OpERATToN O\ocldbdlbsqdn Dear Custorner, Congrotulcrtiotts on your purchose amplifiers. At Rockf'ord Fosgate we are committed to musical reprotluctiott at its best, ancl we ore pleased you cltosc our product. 'I'hrou1;h yettrs <tf enginaerirry expertise, hctnd croftsrtrartship trnd critical tcstirrg proccdures, v)e have crectted a wide range of products thot rcprodttca tnusit-tvitlr oll tltc clorily otttl ricltttcss you deserue. b-rtr nnxintwtt pcrfortnottcc we rcconnn(nd yott lttt, t' your n(, tv llocklitttl l:os, gtttL' product installad by nn Authorizad llockfort! [. . . ] Checking your battery and present sound system, as well as pre-planning your system layout and best wiring routes will save installation time. When deciding how to lay out your new system, be sure that each component will be easily accessible for making adjustments. Before beginning any installation, be sure to follow these simple ru les: 1 10. - The LED illuminates when the unit is . Be sure to carefully read and understand the instructions before \oGldblufoqohl Fdkgp2OarPuFrER 20 attempting to install the amplifier. The design of our cast aluminum heatsink serves to easily dissipate the heat generated over a wide range of operating conditions. However, to maximize the performance of your amplifier, care should be taken to ensure adequate ventilation. The mounting location and position of your amplifier Trunk Mounting Mounting the amplifier vertically on a surface with the fin grooves running up and down will provide the best cooling of the amplifier. Mounting the amplifieron the floorof the trunkwillwork but provides less cooling capability than vertical mounting. Mounting the amplifier upside down to the rear deck of the trunk will not provide proper cooling and will severely affect the performance of the amplifier and is strongly nof recommended. WTRTNG THE Svsrnv CAUTION: Avoid running power wires near the low level input cables, antenna, power leads, sensitive equ ipment or harnesses. The power wires carry substantial current and could induce noise into the Passenger Compartment Mounting Mounting the amplifier in the passenger compartment will work as long as you provide a sufficient amount of air for the amplifier to cool itself. lf you are going to mount the amplifier under the seat of the vehicle, you must have at least 1" (2. 54cm) of air gap around the amplifier's heatsink. Mounting the amplifier with less than 1" (2. 54cm) of air gap around the amplifier's heatsink in the passenger compartment will not provide proper cooling and will severely affectthe performance of the amplifier and is strongly nof recommended. audio system. 1 . Plan the wire routing. Take care when running signal level RCA cables to keep them close together but isolated from the amplifier's power cables and any high power auto accessories, especially electric motors. This is done to prevent coupling the noise from radiated electrical fields into the audio signal. When feeding the wires through the firewall or any metal barrier, protect them with plastic or rubrber grommets to prevent short circuits. Leave the wires long at this point to adjust for a precise fit at a later time. Engine Compartment Mounting Rockford Fosgate amplifiers should neverbe mounted in the engine compartment. Not only will this void your warranty but could create an embarrassing situation caused by the ridicule from your friends. 2. Prepare the Power cable for attachment to the amplifier by stripping 5/8" of insulation {rom the end of the wire. The use of B gauge power cable can interfere with the installation of the end caps. To prevent the wire from fraying, strip the insulation at a 45" angle. lnsert the bared wire into the B+ terminal with the long side of the insulation on the top. NOTE: The B+ cable MUST be fused 1B" or less from the vehicle's battery. lnstall the fuseholder under the hood and prepare the cable ends as stated above. Strip 5/8" of insulation from the end of the cable as described UsrNc rHE XCano The crossover functions are controlled through the use of an XCard and can be set for high-pass, low-pass or full range operation. Each crossover card has two faces: one face operates Full Range, the other has arrows to indicate the edge for selecting HP (high-pass) or LP (low-pass) operation. Orient the card with the desired operating edge, indicated by the arrow, toward the socket terminals inside the amplifier. Firmly, but carefully, plug the card into the socket. High above and connect to the appropriate terminal of the ampliier. Prepare the chassis ground by scraping any paint from the metal surface and thoroughly clean the area of all dirt and grease. [. . . ] while this n. rethocl is ;;;;; inio u fi*"ct resistor (+ öhm, 2testing, it is not representative useful in some types of evaluation and playing nrusic' of an anrplifier ihat is connected to a slleaker and Music llrr, /'/r, r, , , , \rr, r;/r, r, , r, \l)rr'\\('<l on the horizontal axis, lhc ()trlltrtt \/ttlt, t, r:, , r, , l)r(, , , r'rrlltl on Ilrc vcrtical axis and the /rtrpcrltrrrc is rli, , 1 llrt, , /. rxis. ()utput Power, in watts, is listecl on thc lt, ll 'l, r1, , , rlorr Ir, rrrrl , , rrk' lor t, , rc lr inrpedance at each phase angle. AudioGraph lnoDEL BE - The PowerCuberM NG TTSTED VOLTAGE FROM t2 = ST€BEO BAITEnY MoNo = BB DGEO iloNo \, 2-/ Amollpr Seria No: PIJNCHA[, 4P 144V x2 / Bated Power : Raled Oulpul - Watls per Channel Owner i go* 60' 30' 0, ROCKFORDCOBPORATION il;; is dynamic; the sound waves are cornplex and constantly for the lnunging ln orcler to sinrr, rlate this, the lllF-2o2 starrclarcl calls sigr-ral is i"p"t-riS"""l to tlre arrplifier to be a 1 ktlz brrrsted torrc. 20 miltiseconcJs) anct rectucccl 20clB i. rthc an'rplifier's u'til unJr. , rn" signal is Sradually increasecl irr levcl 1'1, iotal Harmonic Distortion (l UD)' At 1"/n distorou, pr, "*. "". 1, auclible, therefore, any power llrrldr-rcecl above that , ion tr". orn"s i"u"l i, consiclered no, t usable. Many t'tralttr-tiactr-lrers represent their They use many amplifiers' outpLlt power in excess of 10'l' clistortiorr' such as Tcltal Maximum Power or nun. 't*, for this measurement, 30' 60' 84W 84W 83W 84W 85W 159 154 153 154 158 266 251 245 W W W W W W W W W (lnd) +60 +o* eo 30 0 30 60 zr1. co 30 0 ll0 21tj w t!f {, 0 (n) 2{il () 0 :10 MaximumoutputPower. Thisisnotinclicativeoftheactualusable out?ut Power. [. . . ]