McIntosh MC-2301 manual

McIntosh Laboratory , Inc. 2 Chambers Street Binghamton, New Y ork 13903-2699 Phone: 607-723-3512 F AX: 607-724-0549 MC2301 Owner ’ s Manual T ub e P ow er Am pl ifier[...]

2 The lightning flash 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 sufficient magnitude to constitute a risk of electric shock to persons. 1. Read these instructions. 2. Keep these instructions. 3. Heed all war[...]

3 IM P O R T A N T ! INS TR U C T ION S F OR R EMO V AL OF F O AM INSE R TS O VER T HE V A C U U M T U B E S P RIOR T O C ONN E C TIN G TH E A . C . P OWE R S UP P L Y C ORD , S T AR T ON T HE NEX T P A GE.[...]

4 Unpacking the MC230 1 C au t ion : T o prev ent damag e to the M C230 1 T ubes duri ng shipping, th ere is a spe - cial foa m inser t surroun di ng the T ubes located on bo th sid es of the P o w er Am- pli f ier . BO TH F oam Inse r ts mus t be re- mo v ed from th e MC 230 1 bef ore co nnect i ng the A C P o w er Su p - ply C ord to th e pow er [...]

5 F igu r e 3 Adequate ventilat ion e x tends t he t roubl e f ree li fe o f t he MC2 30 1 . Always allo w ai r to f lo w t h rough t he v entilat ion ho les on the bot tom of the amplif ier a nd a mean s f or the war m ai r to e scape at the top. Re fer to f igu r e 9 and the in form ation on the next page f or placement a nd inst al lation o f th[...]

6 Cau ti on: T he MC2 30 1 Am pl if i er we igh t is 1 1 6 p ound s (52.6 ki logr am s) . It re qui res t w o or mor e per son s to safe ly han dle w hen m ovin g the a mp lif ier. 1 . T he following Co nne cti ng Cable i s ava ilable f rom the M cIn- tosh Part s De par tm ent: Power Co nt rol Ca ble Par t No. 1 70 -202 Si x foot, 2 c ond ucto r sh[...]

7 X LR Connectors Bel o w is the Pi n conf igu r ation fo r the X LR Balance d In- put, Input /O ut put Connect ors on the MC23 0 1 . Refer to the diag ra m for connect ion: P I N 1 : Shiel d /G round P I N 2: + Out put P I N 3: - Out put P ow er Control Connector The MC23 0 1 P ow er Cont rol Input receiv es a n O n /Of f si g - nal f rom +5 to + [...]

8 Dimensions Dimensions The foll owing di mensions can a ssist in dete r m in ing t he best locat io n for y ou r MC2 30 1 . T here is a dditional i nfor - mation on page 9 per t ai ni ng to in sta lli ng the MC2 30 1 i nto cabinets. 17- 3/4 " 45.09cm 1 1" 27.94cm 12- 5/16 " 31.27cm 20" 50.86cm 21" 54.61cm 3/16 " 0.48c[...]

9 Installation Installation The MC23 0 1 can be place d upright on a t abl e or she lf, sta ndi ng on its f ou r feet. I t a lso can b e custom i nst alled i n a piece o f f u r n itu re or cabi net o f y our choice . The four feet may be remo ved from t he bott om o f the MC2 30 1 when it is custom i nst alled a s outlined b el o w . T he four fee[...]

10 Notes[...]

1 1 Rear P anel Connections and Sw itch Con nec t the MC230 1 power cord to a live A C outlet. Refer to the r ea r pan el to dete r mi ne t he cor r ect vol tage PO W ER CONT R OL I N rec eiv es a t u r n O n / Off signa l f rom a McIntosh compone nt and t he PO W ER CONT R OL OUT sen ds a t u r n O n / Of f signa l to th e next Mc In - tosh Comp o[...]

12 Spade lug or prepa red w ire c onnec tion: In ser t t he spade lug con nector or pre par ed sect ion o f the cable end into the t er m ina l si de acce ss ho le, and t ighten the t er m in al cap u ntil the cable is f i r mly clamped i nto the ter mi nal so t he wi res ca n not s lip out. Re fer to f ig - u res 4, 5 & 6. Bana na plug connect[...]

13 McInto sh Lou dsp ea ker How to Con nect McIntosh Pr ea mplif ie r Con ne ct to A C Out let[...]

14 3 . I f the cable is str anded , car efu lly t wist the st r and s together as t ightly as possib le . Note: I f de sired , the t wi sted e nd s can b e tin ne d with solde r to ke ep th e stra nd s togethe r , or at tach s pad e lug a nd /o r ban an a con nec tor. Spade lug or prepa red w ire c onnec tion: In ser t t he spade lug con nector or [...]

15 How to Con nect for Bi- Amp McInto sh Lou dsp ea ker McIntosh Pr ea mplif ie r Con ne ct to A C Out let McIntosh Po wer A mpli f ier T w o[...]

16 F ront Panel Displa ys and Controls Sta ndby Po wer O n and Se nt r y Monitor T ube Pr otec tion Activa- tion I ndicat or Meter i nd icates t he Po wer Out put of the A mpl if ier PO W ER Switch T u r ns A C Pow e r On / Of f, or On / Remote M ETER Switch select s the d isplay modes of the Po wer O ut put Meter a nd Meter I llu m in ation[...]

17 amplif ier . T he meter poi nter wil l then r ise to the newer higher i ndication. If no f u r the r pow e r pea ks a re rea ched, the met er pointer wil l v er y slo wly ret ur n to its re st position o r lo wer pow e r lev el. The decay rat e is appro xi- mately 6dB p er m inute. Input M ode Sw itch The I nput Mode S witch, which is located on[...]

18 T echnical Descr iption Mc I ntosh Labor ator y , the compa ny w ho int roduced t he w orl d ’ s f i r st amplif ier t hat could be called “ High F ide lit y” , has done it again. T he Mc Intosh eng inee r ing st aff h as cre - ated a t ub e pow er a mplif ier w ithout compro mise, u sing the most advanced McIntosh circu it desi g n conce [...]

19 T echnical Descr iption MC2 30 1 De sign The de si g n ph ilosoph y incor porat ed in t he MC2 30 1 i n- v ol ved sev eral d if ferent tech niques, al l based on sou nd sci- entif ic lo gic. E ver y stage of v oltage amplif ication must be as li nea r as possible prior to the u se o f negativ e feedba ck. Mc I ntosh engi neer s k now h ow to pro[...]

20 feedback designs. The f u lly Balance d Pu sh-Pul l design is use d f rom input to out put. The res ulti ng f ully bala nced conf igu r ation can- cels many form s o f audible distor tion and g reatly i mpro v es the Si g nal-to -No ise r atio of the amplif ier . W hi le con ventional designs on ly ta ke ou t put f rom the plate, the Patented Un[...]

21 T echnical Descr iption, con ’t should fail. Du r ing nor mal ope rat ion there is absol utely n o compromise i n sonic per for mance w ith th is ci rcuit, and it ensu r es safe operat ion o f t he amplif ier u nder even the most extr eme operat i ng conditions. In t he ev ent a prob lem oc cu rs, t he MC 23 0 1 Sentr y Monitor T ub e Prote ct[...]

22 Specif ications Specif ications P ow er Out put Mi ni mum si ne wa ve continuous av erage pow er out put is: 300 watt s into 2 oh m load 300 watt s into 4 oh m load 300 watt s into 8 oh m load Out pu t Load Imped ance 2, 4 or 8 oh ms Rate d P ow er Band 20Hz to 20, 00 0Hz T otal Har monic Di stort ion 0.5 % m ax imu m har monic distor t ion at a[...]

23 Packing Instructions Qu antit y Par t Numbe r Descr ipt 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 a nd bot tom ) 3 03 44 4 1 F oa m R ing 2 03 44 40 F oa m In ser t s ( for pro tec ti ng the T ube s du r ing shipping) 1 04 1 0900 W a r n i ng S heet 4 400 1 5 9 1 0- 32 x 3 /4 inch scr[...]

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 McIntosh Part No. 04108500[...]