pass TM X260.5 Owner’s Manual Sept 23, 2009Manual X260.
Introduction The Pass Laboratories ™ X260.5 mono amplifier embodies the design technology and refinements of the “X” series amplifiers including extensions of the patented Supersymmetry™ circuit. The Supersymmetry™ circuit topology was granted a U.S. patent in 1994, and was the result of 19 years of effort by legendary analog designer and company founder Nelson Pass. The amplifier uses highly matched components in a classically simple single ended Class A circuit.
Century and the elegance to retrieve the micro dynamics offered by the most sensitive loudspeakers. The simple but powerful circuitry moves easily from total silence to explosive transient and back to silence without a trace and without information loss. Very unlike conventional high power amplifiers, they provide this level of power with a subtlety befitting some of the better tube amplifiers.
Setup You can position this amplifier most anywhere you wish, but it requires adequate ventilation. We do not recommend placing it in enclosed cabinets or small closets without means for air to circulate freely. Stacking these power amplifiers directly upon each other is not recommended for the same reason. This amplifier typically idles at slightly more than 250 watts, most of which dissipates as heat across the heatsinks.
Looking at the rear panel you will see the IEC 320 AC power cord receptacle, a mains power switch, two pairs of output connectors, a pair of binding post connectors for remote turn-on, one RCA input connector and one XLR balanced input connector. Make sure that the mains power switch is off (down). Plug the AC cord into the back of the amplifier, and then into the wall. Then turn the breaker switch on (up). The lights in your house may blink when the power supply charges the capacitors; this is normal.
The amplifier can be driven single-end or balanced, if driving the amplifier single-ended, leave the supplied jumper in place (between pins 1 & 3 on the XLR). Your amplifier will operate without the jumper in place, but performance will be significantly diminished. Now that the source component is connected, make sure there is no signal coming from it, probably by turning the volume all the way down. With the speakers connected, push the front panel button to activate the amplifier.
fier. The positive of the 12 volts DC goes to the red connector. This connection has an actual operating range of about 9 volts to 15 volts at a current draw of approximately 5.0mA. This switching will override the front panel button, so if you want the front panel button to operate, leave the rear connection open. So much for the most essential information. Speaker Interface The Pass Laboratories™ X260.5 is optimized for loads nominally rated at 4 ohms and above.
Fortunately the amplifier is not sensitive to the capacitive/inductive character of some of the specialty speaker cables, so feel free to experiment. We have found that about 90 per cent of bad sounding cables are in reality bad sounding connections, and we recommend that special attention be paid to cleanliness of contact surfaces and proper fit. Speaker cables should be firmly tightened down at the speaker output terminals, but do not use a wrench.
For more information please contact: Pass Laboratories Inc. P.O. Box 219, 24449 Foresthill Rd., Foresthill, CA 95631 Tel: 530.367.3690 Fax: 530.369.2193 www.passlabs.com © 2009, Pass Laboratories Inc. “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. X260.
Warranty Information Please check with the factory-authorized distributor in the country you are purchasing this product for specific warranty information. All Pass Laboratories products purchased from an authorized Pass Laboratories dealer in North America are covered by a transferable, limited 3-year warranty. This warrantee includes all parts and labor charges incurred at the repair facility in addition to return shipping to the domestic customer, exclusive of subsequent damages.
For your protection please read the following: Water and moisture: Electrical devices should not be used near water ( as per example, near a bathtub, washbasin, kitchen sink, laundry tub, wet basement or swimming pool ). Care should be taken such that objects do not have the opportunity to fall, and that liquid is never spilled onto or into the device enclosure through openings.
