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Pass Labs XA60 - page 1
1 XA60 Owner’ s Manual pass TM XA60 Owner’ s Man ual May 18, 2006 ...
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Pass Labs XA60 - page 2
2 XA60 Owner’ s Manual Analog designer Nelson P ass has ov er the years produced some tr uly g reat solid-state amplifiers , each unique in it’ s own w ay . Not surprisingly , the P ass Laboratories™ XA60 monoblock amplifier is no ex ce ption. The XA60’ s sleek industrial design is a stunning understatement of ar tistic for m integrated wit ...
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Pass Labs XA60 - page 3
3 XA60 Owner’ s Manual (very loud) av erag e acoustic signal in a 100 cubic meter room, peaks will be somewhat higher . The XA60 has a massive toroidal transformer coupled to a high cur rent DC reser voir . Recognizing that the XA60’ s ability to resolve microdynamics is best experienced with clean pow er, the extreme low-lev el resolution of t ...
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Pass Labs XA60 - page 4
4 XA60 Owner’ s Manual W e have pro vided a standard IEC pow er cord that fits into the standard 15 amp IEC receptacle at the rear of the amplifier chassis . T wo XA60’ s may be run on a single 15-amp circuit in conjunction with other audio components . This amplifier is equipped for operation with an ear th ground provided by the users A C out ...
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Pass Labs XA60 - page 5
5 XA60 Owner’ s Manual On the front panel, the “Standby” LED indicator should be glo wing blue, indicating that A C power is a vailable and the capacitor banks are charged. The “P ower” LED should not be on. If the “P ower” LED is on, don ’ t g et ex cited, just use the front panel stand-by switc h to g o to stand-b y mode, with the ...
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Pass Labs XA60 - page 6
6 XA60 Owner’ s Manual Now that the source component is connected, mak e sure there is no signal coming from it, probably by turning the volume all the w ay down. Wit h t he spea ke rs c onn ecte d, mak e s ure the po w er c ord is att ach ed and pl ug ged int o ma ins po we r; t og gl e t he f ron t pa nel swi tc h t o ac ti va te th e am plif i ...
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Pass Labs XA60 - page 7
7 XA60 Owner’ s Manual a b ig deal . Y ou shou ld be a ble to put y our hand s o n th e h eat sin ks wi thou t d isco mfort for 10 sec onds or so . The ampl ifi er h as a th er ma l c utou t t hat wil l di sco nnec t A C po w er if th e te mpe ratu re ex cee ds 75 d egrees Ce ntigra de . Th is t hermal cut out sho uld nev e r oc cur in rea l li f ...
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Pass Labs XA60 - page 8
8 XA60 Owner’ s Manual W e have found that about 90 per cent of bad sounding cables are really bad sounding connections , and we recommend that attention be paid to cleanliness of electrical contact surfaces and proper connector fit. Speaker cables should be fir mly tightened do wn at the speaker output ter minals , but not with a wrench. Output ...
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Pass Labs XA60 - page 9
9 XA60 Owner’ s Manual All figures obtained after 1 hour war m-up , with regulated 120 V A C pow er line. See man ual notes about A C power line regulation. Gain 26 dB Freq. R esponse -3 dB at 1.5 Hz, -3 dB at 100 kHz P ow er Output 60 watts max @ 1% THD , 1 kHz, 8 ohms Maximum Output V oltag e plus , minus appro x. 40 volts Maximum Output Curren ...
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Pass Labs XA60 - page 10
10 XA60 Owner’ s Manual Please check with the factor y-authorized distributor in the countr y you are purchasing this product for specific w ar ranty infor mation. All P ass Laboratories products purchased from an authorized Pass Labora- tories dealer in Nor th America are covered b y a transferable, limited 3-year warranty . This w ar rantee inc ...
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Pass Labs XA60 - page 11
11 XA60 Owner’ s Manual W ater and moisture: Electrical devices should not be used near water ( as per example , near a bathtub , washbasin, kitc hen sink, laundr y tub , wet basement or swimming pool ). Care should be taken suc h that objects do not hav e the oppor tunity to fall, and that liquid is never spilled onto or into the device enclosur ...
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Pass Labs XA60 - page 12
12 XA60 Owner’ s Manual Som eti mes tw o desi gns com ple ment eac h oth er so we ll that yo u are surp ris ed whe n you le arn they w ere n ’ t in ve nte d toget her . So it is wi th th e X Sup ers ymme tery™ amp lie r a nd the Alep h si ngl e-en ded Cl ass A out put ci rcui t. The Sup ers ymme tery™ “X” am pli er repe ated ly de ...
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Pass Labs XA60 - page 13
13 XA60 Owner’ s Manual th ey va nish at the out put , ty pic ally b y a fac tor of 10 or so for mat ch ed sin gle -en ded Clas s A cir cui ts . Sup ers ymme try™ exte nds th is conc ept by us ing fe edba ck on ly to mak e th e dis torti on an d noi se more iden tic al on eac h h alf of a bal anc ed ci r- cu it, not to elim ina te it as suc h. ...
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Pass Labs XA60 - page 14
14 XA60 Owner’ s Manual Th e a m pl i e r ha s o n ly th e t w o s ta ge s , a n i np u t s t ag e o f a ba l an c e d p ai r o f i np u t d ev i ce s , a nd th e o ut p u t s ta ge , a ba l a nc e d p ai r o f s i ng l e- e nd e d C la s s A po w er M os f et s . Li k e t he A l ep h™ , y ou c a n tr a ce a pa t h fr o m in p ut t o o ut p ...
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