pass TM SR-1 Owner’s Manual R1.
Introduction The SR-1 (Son of Rushmore) is the successor to the Rushmore loudspeaker system produced by Pass Labs between the years 2003 and 2008. The design goals are similar, but product is different. The Rushmore aimed for high dynamic contrast and control with very low distortion. This was achieved with the finest quality “strong motor” drivers intimately coupled to single-ended Class A amplifiers.
the driver itself makes non-ideal load for the crossover. To retain performance comparable to the Rushmore something has to give, and that something is the overall efficiency of the loudspeaker system. First off, the drivers must be intrinsically lower distortion and more neutral in their character. For this purpose we chose the best pieces that SEAS has to offer, Nextel coated cones in staggered diameters, topped off with the Crescendo high frequency dome.
from 3 to 5.5 ohms. This means that the power amplifier will need to be able to drive a 3 ohm load (we make amplifiers like that). On the plus side, the amplifier sees a relatively flat impedance, and much less of the reactance of the crossover and loudspeaker drivers. After developing the initial versions of this crossover, we spent the next two years refining the details of the sound with our five inhouse listeners and their individual environments.
Unpacking Caution: These boxes are heavy and require two people using proper lifting techinques and care when unpacking. Your SR-1 system comes double boxed with each cabinet in it’s own double box. Within the double box, each speaker sits in rigid foam top and bottom trays. We do not suggest that you attempt to separate inner and outer boxes. Starting with the two large boxes: Carefully cut the tape securing the top end-flap on the outer box. Repeat for the inner box.
with common metric hardware on the underside of the upper cabinet. The hardware and required tools are supplied with each cabinet. Please retain the packing materials and supplied tools. Customer will need to install the “Tilt Bar” and the “Nameplate” and 3 feet. Like the larger bottom cabinet the feet on the upper cabinet have “no-mar” washers between the aluminum hardware and the cabinet finish. To preserve the wood finish on the cabinet, please install these washers.
If you are using the preferred method of bi-wiring with two pairs of speaker cables from the power amplifier, then you may connect the wire set from the amplifier to either pair of the lower cabinets binding posts. If you bi-wire the speaker then remove the supplied jumper wire. In either regard please keep in mind that the speaker cabinets are polarity sensitive. The positive speaker terminals on both pairs of speakers need to attach to the positive terminals of the power-amplifier.
Under these idyllic room conditions speaker placement is frequently a simple task. In an idyllic world the speakers would be well out in the room, typically about 1/3 the distance of the rooms front to back dimension. The listener would be at mid point in the room or slightly to the rear of mid-point. The listener and the speakers would form an equilateral triangle, such that the distance speaker to speaker would be identical to the distance from either speaker to listener.
level of the drivers associated with a control. DOWN decreases the level of the drivers associated with a control. The level control on the woofer module controls the mid-bass level in the room. This control should be adjusted to optimize bass in room while minimizing undesirable bloom and boom of low frequencies.
Specifications: Passive 4-way design, Impedance: Sensitivity: Floor space required: Overall height: Bass Cabinet mass: Treble Cabinet mass: Shipping weight: bi-amp enabled 3 to 5.5 ohms 86 dB @ 2.83 V @ 1 M 16.5” X 25” 48” 115 Lbs 40 Lbs 400 Lbs / pair Pass Laboratories PO Box 219 24449 Foresthill Rd. Foresthill, CA 95631 “Pass”, “pass”, “Pass Labs”, “Pass Laboratories”, Supersymmetery”, “Aleph”, and “Zen” and are all registered trademarks of Pass Laboratories, Inc.
How to connect SR-1 to your amplifier using single speaker cable and short jumper cable.
How to connect SR-1 to your amplifier for bi-wiring.
Assembly instructions for upper cabinet SR-1 Owner’s Manual 13
Warranty Information Please note: Conditions of warranty service and customer rights for product purchased outside the United States may vary depending upon the distributor and local laws. Please check with your local distributor for specific rights and details. All Pass Laboratories products purchased new from an authorized Pass Laboratories dealer in North America are covered by a transferable, limited 3-year warranty.