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Class A power amplifiers and later, high power amplifiers using only local feedback (the Stasis series). Pass sold Threshold and created Pass Laboratories in 1991, where he concentrated first on elevating single-ended Class A power amplifiers to new power levels and performance, the Aleph series.
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The X amplifiers deliver more output power per dollar, and the XA amplifiers have a better subjective performance. All of the amplifiers drive known loudspeaker loads without misbehaving, and all are unconditionally stable into low impedance and reactive loads. XA100.5 Owner’s Manual...
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Tel (530) 367 3690 Fax (530) 367 2193 Pass Labs, PO Box 219 24449 Foresthill Rd, Foresthill CA 95631 XA100.5 Owner’s Manual...
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The power cord should be attached to the amplifier prior to plugging into house power. Place the rear mounted switch in the off (down) position before plugging in this amplifier. XA100.5 Owner’s Manual...
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On the rear panel you will also find a pair of 5 way binding posts for external turn-on control. Applying 5 to 12 volts DC at this connection will override the front panel stand-by switch and turn the amplifier on. XA100.5 Owner’s Manual...
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1 & 3 on the input XLR. On the XLR connector pin 1 is ground, pin two is positive input and pin 3 is inverted (negative) input. Pin numbers are marked on the XA100.5 Owner’s Manual...
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You should be able to put your hands on the heat sinks without undue discomfort for 5 seconds or so. The amplifier has a thermal cutout that will disconnect AC power if the temperature exceeds 75 degrees Centigrade. This thermal cutout XA100.5 Owner’s Manual...
15 to 30 years. Fortunately they die gracefully and are easily replaced by a good technician. After that, the longevity will depend upon the number of operating XA100.5 Owner’s Manual...
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(530) 367 3690 fax: (530) 367 2193 “pass”, “Pass”, “Pass Labs”, “Pass Laboratories”, “Supersymmetery”, “Aleph”, and “Zen” and are all registered trademarks of Pass Laboratories, Inc., and all rights thereto are protected by law. XA100.5 Owner’s Manual...
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155 dB (random noise floor to peak output) Balanced CMRR Balanced CMRR Balanced CMRR -60 dB @ 1 KHz DC offset DC offset DC offset < 50 mv Power Consumption 270 watts Temperature 28 degrees C. above ambient at idle XA100.5 Owner’s Manual...
Warranty Information All Pass Laboratories products purchased new from an authorized Pass Laboratories dealer in North America are covered by a transferable, limited 3-year warranty. This warranty includes parts and labor charges incurred at the repair facility. Consequential damages are specifically not covered and damage due to modification or physical abuse is also not covered.
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Power Cords: Pass Laboratories provides a power supply cord that meets all legislated requirements for the market in which the product was originally sold. If you choose to substitute an after-market product we urge you to choose one that is fully safety rated by the necessary local authority.
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