Pass Labsメーカー5XA30.5の使用説明書/サービス説明書
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1 pass ® XA30.5 Owner’ s Man ual May 17, 2007.
2 XA30.5 Owner’ s Manual Nelson P ass has been designing audio electronics since about 1971, first with ESS (remember Heil transfor mers?), and then for ming a new company , Threshold in 1975. Threshold pioneered the design of high pow er Class A power amplifiers and later , high pow er amplifiers using only local feedback (the Stasis series).
3 XA30.5 Owner’ s Manual W e star t with simple FET circuits already ha ving low distortion and noise, and arrang e them in tw o symmetrical halves . T he tw o halves of the amplifier channel are closely matc hed, eliminating a larg e por tion of distortion and noise without feedback.
4 XA30.5 Owner’ s Manual All the usual perfor mance metrics - pow er, distortion, noise, input impedance, damping factor and bandwidth ha ve all been impro ved in this latest generation. T he po wer supplies are larger, with fast rectifiers gating to larg er capacitor banks .
5 XA30.5 Owner’ s Manual SET UP X amplifiers r un at about the same pow er as their output rating, and XA amplifier r un more than twice that. The heat sinks on the side of the amplifier r un hot to the touch – about 25 to 30 degrees C. abov e ambient, so you can expect 50 to 55 degrees C.
6 XA30.5 Owner’ s Manual The amplifier’ s voltage and cur rent rating are indicated on the rear panel. It will be either 230 v olts, 115 v olts or 100 volts . T he larger amplifiers have a circuit break er of the appropriate capacity . The smaller power amplifiers use a slo w-blow 3A G type fuse .
7 XA30.5 Owner’ s Manual So the amplifier is sitting there unconnected. Make sure that the rear panel po wer switch/break er is off (down). Plug the A C cord into the back of the amplifier , and then into the wall. Then tur n the po wer switc h/breaker on (up).
8 XA30.5 Owner’ s Manual XLR. If you re-install the jumper incorrectly or leav e it lying about, the amplifier will not w ork properly , and you will be able to tell. Choose either XLR or RCA inputs . If you r un both at once from different components , the sound is not likely to be optimal, but it shouldn ’ t cause damag e anywhere .
9 XA30.5 Owner’ s Manual should never occur in real life . This is a ver y rare occurrence, and w ould indicate a serious problem. Interconnects and Speaker Ca bles W e hav e a g eneral recommendation about interconnects , and speaker cables: They should cost less than the amplifier , and contain at least some conductiv e material.
10 XA30.5 Owner’ s Manual ther mal cycles , but we can sa y that we hav e had amplifiers operating in the field in ex cess of 20 years with no par ticular mortality , and we don ’ t hav e g ood infor mation beyond that. More to the point, you should not w or ry about it.
11 XA30.5 Owner’ s Manual XA30.5 SPECIFICA TIONS Obtained after 1 hour war m-up , with regulated 115 V A C pow er line. Gain 26 dB Freq. R esponse -3 dB at 1.5 Hz, -2 dB at 100 kHz P ow er Output P ow er Output P ow er Output 30 watts @ 8 ohms , 60 watts @ 4 ohms Distortion @ 1 KHz .
12 XA30.5 Owner’ s Manual W ar ranty Infor mation All P ass Laboratories products purchased new from an authorized P ass Laboratories dealer in Nor th America are co vered by a transferable, limited 3-year w ar ranty . This war ranty includes parts and labor charges incur red at the repair facility .
13 XA30.5 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 ).
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Pass Labs 5XA30.5をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはPass Labs 5XA30.5の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Pass Labs 5XA30.5の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Pass Labs 5XA30.5で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Pass Labs 5XA30.5を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はPass Labs 5XA30.5の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Pass Labs 5XA30.5に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちPass Labs 5XA30.5デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
