Instruction/ maintenance manual of the product MC303 McIntosh
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McIntosh Laboratory , Inc. 2 Chambers Street Binghamton, New Y ork 13903-2699 Phone: 607-723-3512 www .mcintoshlabs.com MC303 Owner ’ s Manual P ow er Amp li f ier.
2 The lightning ash with arrowhead, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “danger - ous voltage” within the product’s enclosure that may be of sufcient magnitude to constitute a risk of electric shock to persons.
3 Thank Y ou Y our decisio n to own t his McIntosh M C3 03 P ow er A mpli- f ier ra n k s y ou at the ver y top among disc r im in ati ng musi c liste ners. Y ou no w have “The Best. ” T he Mc I ntosh dedica- tion to “Qu alit y , ” is assu ra nce t hat y ou will r eceiv e many years of musi cal enj oyment f rom th is u nit.
4 X LR Connectors Bel o w is the Pi n conf igu r ation f or the X LR Balanced I nput Con nectors on t he MC 30 3. R ef e r to t he diag ra m f or con- ne c t ion: P I N 1 : Shie ld/Grou nd P I N 2 : + Out put P I N 3 : - Out put P ow er Con trol Connector The MC3 03 ’ s P ower Control Inputs receive On /Off si g n als o f +5 v ol ts.
5 Dimensions Dimensions The fo llo wi ng di mensions can a ssist in deter mi n ing the best location f or y our MC30 3. There is add itional in forma - tion on the next page per t ai ni ng to in sta lli ng the MC3 03 into cabinet s. F15AH 125V 17- 3/4 " 45.
6 Installation Installation The MC3 03 can be placed upr ight on a tabl e or she lf, sta ndi ng on its f our feet. It also can be cu stom in stal led in a pi ece of fu r n it u re or cabinet o f yo ur choice . The four feet may be remov ed f rom t he bott om o f t he MC 30 3 when it is custom i nst alled a s outlined belo w .
7 F15AH 125V Rear P anel Connections and Swi tch Con nec t the MC30 3 power cord to a live A C outlet. Ref er to t he re ar panel to d eter m ine t he cor re ct vol tage PO W ER CONT RO L I N receives.
8 How to Co nnect for Center and Surround Channels the con nect ion o f a single Loudsp eaker pe r amplif ier chan nel, with a n impe da nce o f 2 ohm s, 4 ohm s or 8 oh m s. Note: The rem aining Amplif ier Lo ud spea ke r T er minals shou ld not be co nnec ted to a nothe r Lou dsp eak er.
9 How to Co nnect How to Co nnect for Lef t , Center and Right Channels Note : Th e remai ning Amplif ie r Lou ds peak er T e rmin als shou ld not be co nnec ted to a nothe r Lou dsp eak er.
10 F ront Panel Displa ys and Switches Sta ndby Po wer O n Ind icator Meter s i ndicate t he A mplif ier Po wer O ut put of Chan nels 1 - 3 LEDs i ndicat e when A mplif ie r Cha n nels 1 - 3 P O W ER .
11 P ow er On T o hav e the MC3 03 automatically t u r n O n or Off when an A / V Cont rol Center or Prea mplif ier t u r ns on or off, rotate the pow er sw itch to the R EMOTE position. F or manual op erat ion, rotate t he pow e r switch to the ON or OFF posi tion as desi red.
12 T echnical Description In side Bott om View o f t he MC30 3 Mc I ntosh Laborator y , the company who int roduced the w orl d ’ s f i rst a mplif ier that cou ld be called “High Fi delit y” , has done it again.
13 ra nge o f music conditions with t he benef its o f lo wer dist or - tion and cooler operat ion. The MC3 03 can pro vide g reater t ha n 60 ampe res pe ak output cu r re nt to dr ive uneven speaker load s.
14 inc rease i n temp erat u re w ill res ult in a red uced life expect ancy for the amplif ier . The Auto fo r mer c reates a n ideal match bet ween the P ow er A mplif ier Out put Circuit r y a nd the Loudsp ea ker . The re is abso lutel y no per fo r ma nce li mit ation with an Au tof or mer .
15 can store ov er 200 Joules of energy , for the th ree a mplif ier chan nels, necessa r y for the wide dy nam ic range “Digital Audio ” de mand s. Re fer to f igu re 22. The re is also a f ul ly regulate d lo w vo ltage pow e r supply to g ua ra ntee exce l lent s ignal t o no ise rat io .
16 T op View of the MC3 03.
17 Photos Rear View of the MC3 03 A ngle View o f t he MC30 3.
18 Specif ications Specif ications P ow er Out pu t Mi ni mum si ne wa ve con ti nuous av e rage pow e r output per chan nel, all chan nels oper ati ng: 300 watt s i nto a 2 ohm, 4 oh m or 8 ohm load Output Load Impedance 2, 4 or 8 oh ms Rated Po w er Band 20Hz to 20,000H z T otal Har monic Distor tion 0.
19 Packi ng Instr uctions Quan ti ty Par t Number De s c r ip t ion 1 03 4 1 05 Shipping car ton top 1 03 4 1 0 4 Shipping car ton bot tom 2 03 44 3 9 F oa m Pad ( top and bot tom ) 3 03 44 4 1 F oa m.
The continuous improvement of its products is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without notice. Printed in the U.S.A. McIntosh Laboratory , Inc. 2 Chambers Street Binghamton, NY 13903 www .mcintoshlabs.
An important point after buying a device McIntosh MC303 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought McIntosh MC303 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 McIntosh MC303 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, McIntosh MC303 you will learn all the available features of the product, as well as information on its operation. The information that you get McIntosh MC303 will certainly help you make a decision on the purchase.
If you already are a holder of McIntosh MC303, 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 McIntosh MC303.
However, one of the most important roles played by the user manual is to help in solving problems with McIntosh MC303. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device McIntosh MC303 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
