I am selling my extremely rare set of Rushmore Speakers. As an added bonus, I am including a new set of ribbons for the tweeters ($4,000) value I kept a s backup and never needed. I have the original boxes. I would be willing to pack them; however, you will need to arrange shipping. They are very large and weigh 275 Lbs each! Local pick up after an audition and inspection is recommended.
THE PASS LABS RUSHMORE IS A UNIQUE MASTER
ART OF WORK, IT WAS DESIGNED, ENGINEERED AND
PRODUCED BY MR. NELSON PASS WITH A DEEP PASSION
AND A VERY LARGE QUANTITY OF EXTRAORDINARY
HIGH VALUE MATERIALS.
THE GREAT GOAL OF THE RUSHMORE :
ALL DRIVERS ARE IN PERFECT PHASE BETWEEN
THEM, IMPOSSIBLE WITH A PASSIVE SPEAKER .
BECAUSE THE PASSIVE CROSSOVER ( INTERNAL OF SPEAKERS )
ALWAYS GENERATES PHASE ROTATIONS BETWEEN THE DRIVERS.
CONSEQUENTLY IS IMPOSSIBLE A PERFECT THREE DIMENSIONAL
REPRODUCTION, PRECISE COLLOCATION OF THE
INSTRUMENTS AND THE SINGER / S INSIDE THE SOUNDSTAGE
WITH THE CORRECT DIMENSIONS ( WIDE, TALL & DEEP ).
IN ACTIVE SPEAKERS, THE DRIVERS ARE CONNECTED DIRECTLY
TO THE AMPLIFIERS, IN THIS WAY, THEY WORK PERFECTLY WITH
THE HIGH DAMPING FACTOR OF THE AMPLIFIER AND NOT WITH
LOW DAMPING FACTOR OF THE PASSIVE FILTER COMPONENTS.
IN A MULTIWAYS ACTIVE SPEAKERS, ALL AMPLIFIERS WORK ONLY
IN A RESTRICTED BAND OF FREQUENCIES ( MORE POWER, MORE
DYNAMIC, MAXIMUM SONIC PERFORMANCE, MINIMUM DISTORTION ).
EACH AMPLIFIER WORKS WITH ONLY ONE DRIVER, WHICH
MEANS ONLY ONE IMPEDANCE AND NOT A DANGEROUS
MIXT OF IMPEDANCES AND PHASES ROTATIONS FOR A FINAL
TERRIBLE COCKTAIL OF SOUNDS.
WITH THE RUSHMORE YOU WILL HAVE THE
MAXIMUM PERFORMANCE OF HIGH RESOLUTION AND
DEFINITION ACTUALLY YOU CAN FIND IN A SPEAKER.
MAXIMUM PERFORMANCE OF TIMBRAL ACCURACY &
TONAL BALANCE WITH A PERFECT 3 D IMAGE
AND DYNAMIC LIKE LIVE MUSIC.
AN IDEAL ULTRA HI-END MINIMALIST STEREO SYSTEM
POSSIBILITY, WITH ONLY ONE ( WITH VOLUME CONTROL )
SOURCE, CONNECTED DIRECTLY TO THE RUSHMORE .
INCLUDING IN THE SPEAKER, 4 LEVEL CONTROL,
ONE FOR EACH WAY.
GREAT VALUE, THE RUSHMORE :
· PART OF THE CABINET MADE WITH AMPHIBOLITE GRANITE
( GREAT QUANTITY WITH PRECISION MACHINED WORK ).
· CABINET MADE OF PIANO FORMER, CURVED WOOD LAYERS
WITH A FANTASTIC NATURAL CHERRY FINISH.
. 4 HIGH SENSITIVITY SPEAKER DRIVERS, PROFESSIONAL GRADE.
· 1 PURE CLASS A SUPERSYMMETRY ELECTRONIC CROSSOVER.
· 4 PURE CLASS A SUPERSYMMETRY POWER AMPLIFIERS.
· 120 CM. LONG, HEAVY DUTY BLACK ANODIZED ALUMINUM
HEATSINK ( SAME OF XA 100.5 CLASS A AMPLIFIER USES )
· 4 LEVEL CONTROL POTENTIOMETERS ( FOR EACH AMPL. )
· ULTRA WIDE FREQUENCY RESPONSE FROM @ 20 Hz to 40 kHz
· MAXIMUM ACOUSTIC OUTPUT OF @ 120 dB measured at 1 mt.
· 180 KG. NET WEIGHT FOR EACH SPEAKER, OF GREAT VALUE
QUALITY OF THE MATERIALS ( NOT OF MDF ! )
FROM PASS LABS:
“Rushmore” represents 30 years of gestation and over three years
of intensive development,revision and thoughtful listening by Nelson Pass
and the staff at Pass Labs. This is an exceptionally dynamic and tonally balanced
active four-way listening system featuring a 15 inch woofer, 10 inch lower midrange,
6 inch upper midrange and a 4 inch ribbon tweeter.
Fit, finish and build quality is exceptional, and like all Pass Labs product it represents
the labor of a few very dedicated technicians and talented craftspeople.
We believe this to be the most sonically and technologically advanced
listening system available...............
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. Each driver (deep bass, midbass, midrange, and high
frequency ribbon) operated over a limited frequency band tailored
to its strengths by a passive filter at the input of each of the four
amplifier channels. The high efficiency (98+ dB/watt) cone drivers
also had very high power handling (up to 400 watts), and the ribbon
tweeter extended from the top octave and far beyond the audio range.
The result was a stunning display of clarity and dynamics. With
each speaker driver enjoying its own amplifier and operated at small
percentage of its capacity, the control was precise and the curtains
of distortion parted to reveal phenomenally subtle inner detail. They
were accurate and musical. They kept their detail and dynamics at
loud and soft levels.
Made from Gabro Aphibolite (a deep-sea granite) and piano-formed
Cherry layers, they weighed just under 400 pounds
each and cost a small fortune.
It’s six years later and we no longer make the Rushmore - the cost of
parts, material, processes and shipping have skyrocketed.