pass TM XP-30 Owner’s Manual November 25, 2011 XP-30 Owner’s Manual 1
Introduction In an area of electronics where it is often thought that everything that can improve the sound has already been done, where other designers are concentrating on mechanicals and eye-candy, we offer better sound. The XP-30 is the best preamplifier line stage ever made by Pass Labs. By extension it is possibly the best line stage ever made.
Description The XP-30 is a modular preamplifier consisting of one control / power supply chassis and additional gain chassis, each containing the analog circuits of a single channel. The XP-30 is meant to typically be used as a two-channel product, but you can use the control chassis to serve up to six channels. Each channel individually provides master and slave outputs.
volts to a balanced no-feedback follower output stage? The XP-30 is fully capable of both tasks at once. The internal gain of each stage can be boosted another 16 dB via an internal jumper and the preamp can serve as the low source impedance front end to the new generation of Class A power followers. Don’t laugh – they already are for sale, and there are more coming your way. If you have an XP-30 you won’t have to buy a new preamp...
Set-up Setup and Operation So much for self-congratulation. Lets play some music! On a more sober note, please read and understand the operational instructions and safety issues associated with this product. All of us at Pass Laboratories put great effort into building a soundly engineered and superbly performing rugged product of lasting durability and value. We understand that things occasionally go wrong, but we are here to support you if that happens.
Additional channels beyond the normal two may require a different fuse value, please contact the factory for your specific application. The input frequency rating of the power-supply is presumed 5060 Hz in all instances. Some individuals may wish to use a power regeneration apparatus, and slightly higher lines frequency is presumed acceptable. The preamplifier typically draws 45 watts of power from the utility mains during operation as a 2 channel preamplifier.
Connect the power supply / control chassis to the gain stages by the supplied DIN-25 umbilical cables. They must be pressed firmly into the receptacles, keeping in mind that the connector shell is trapezoidal, which keys the proper orientation. Finger tighten the screws on either side of the connector shell. Do not use excessive force, take care not to cross thread the screws. Third There are a total of seven inputs on each chassis. The first inputs are numbered 1-5.
Handy Features The home theater “Pass-thru” command is simply a software setting that selects input 6 and sets the gain to 0 dB with a minimum of keystrokes. The keystroke shortcut selects input 6 and slowly advances the volume control to step 89, starting from 0. The slow advance of level is intentional; 0dB (step 89) is appropriate for a home theater processor, it is however dangerously high for most source components.
The monaural function is selected only from the front panel, it is not available from the hand remote. When mono is selected, rather than creating a true mono signal it creates a frequency dependent blend of signal from two chassis. The blend has been chosen such that it minimizes noise while maximizing information transfer.
“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.
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.
Pass Labs Warranty 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 all parts and labor charges incurred at the factory or factory specified repair facility, exclusive of any subsequent or consequential damages. Damage due to physical abuse is specifically excluded under this warranty.
pass® Pass Laboratories Inc. PO Box 219, Foresthill, CA 95631 voice: 530.367.3690 - fax: 530-367-2193 - web: passlabs.
