Famous Guitarmaker Internet World Headquarters
presents
FURMAN PL-TUNER
POWER CONDITIONER/TUNER
| Famous Guitarmaker Internet World Headquarters
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POWER PROTECTION FEATURES
It's a power protection device, it's a rack illumination system, it's
an instrument tuner! The PL-TUNER is the perfect accessory for any musician's
rack-mount system. lnstall a PL-TUNER in the top slot of your rack, and
the eight switched AC outlets on the rear panel will power up all your equipment
while its two slide-out light fixtures provide discreet illumination on
stages, in studios, and in other dark places. A dimmer control lets you
adjust the lamp brightness to just the right level.
The PL-TUNER protects your delicate electronic equipment by combining a
high voltage surge and transient suppressor with an RFI/EMI interference
filter. The fast-acting suppression circuit clamps transient voltages to
safe levels. The peak clamping voltage is 250 VAC, effective for spikes
on any of the three AC conductors, and the clamping circuitry can absorb
a total of up to 240 joules. These specs indicate a very high degree of
protection compared to competitive products. The RFI/EMI filter works to
prevent noise from fluorescent lights, certain dimmers, radio transmitters,
and similar sources of "electronic pollution" from contaminating
the AC line and from there, leaking into sensitive audio, video, or computer
circuits. This filter is a low-pass type, composed of five high-voltage
capacitors and two chokes. It passes the low (50 or 60 Hz) line frequency
while rejecting high frequencies, with maximum attenuation in the region
from 1 to 100 MHz.
The eight circuit breaker protected outlets are rated at 15 amps. The PL-TUNER's
lamps come supplied with 7 watt night-light bulbs. Replacements are readily
available at most hardware stores or almost anywhere household light bulbs
are sold. Bulbs are easily replaced without removing the unit from the rack
by unscrewing the cap on the end of each light tube.
The PL-TUNER has a master switch for the rear outlets which lights up when
the power is on. There is also a separate switch for the lamps, allowing
you to check your rack's settings before applying power to it.
Tuning a stringed instrument with the PL-TUNER's Ultra Stable Tuner is
easy. Simply plug the instrument into the INSTRUMENT jack, and with another
cable connect the AMP jack to the amplifier input. Leave the instrument
connected this way so the tuner is always available for a quick tuning check.
This will not load or distort the signal in any way, nor cause a loss of
highs. If no note is plucked, the green IN TUNE light (top center, between
the FLAT and SHARP lights) will flash once per second to show that the tuner
is ready and receiving power.
To tune quietly so that the audience doesn't hear the tuning tones, press
the AMP MUTE button. Press it a second time to route the signal on to the
amp.
Now play a single note, and adjust that note until the desired Note Indicator
light is ON. For example, to tune a D string on a guitar, pluck that string
and turn its tuning peg until the D Note Indicator is ON.
Slowly make the final adjustment until the green "IN TUNE" light
at the top center of the display is ON. The SHARP and FLAT lights blink
more slowly as you approach IN TUNE. Observe this "visible beat"
as you are tuning, and you will be able to hit IN TUNE every time without
overshoot.
Fully Automatic Operation: The PL-TUNER will sense and automatically
select any note within its seven-octave range. Once the note is selected,
mode switching is fully automatic. The mode is fast during the initial search
for the note. Then it switches to a medium speed during the second or so
while it is settling on the new note. Finally, when the circuits decide
the note is "locked on," the tuner switches to slow mode, which
provides the greatest accuracy and minimum jitter from noise. Most tuners
have only one mode, a compromise between speed and accuracy. Some provide
a FAST/SLOW manual switch. The PL-TUNER does it all automatically.
Superior Noise Rejection: Nothing has been spared in the design of
the PL-TUNER's circuitry to provide the ultimate in noise rejection. This
is the only tuner which can provide steady, accurate readings from a signal
degraded by hum, hiss, fret buzz, sympathetic vibrations, or leakage from
other instruments.
Proportional Tuning Indicator: Most tuners with LED displays show
the tuning error in only a few steps. This makes it hard to tune accurately.
A wide step means too much "dead space" (audible changes in the
tone produce no change in the display). A narrow step means you can easily
overshoot the IN TUNE point. The PL-TUNER avoids this frustrating problem
by providing a simple LED display with a continuous, proportional indication
of tuning error. The SHARP and FLAT lights blink rapidly when the note is
far out of tune, and blink more slowly as IN TUNE is approached. This "visible
beat" provides a natural feel to the tuning process that musicians
really appreciate.
Dimming the Tuner LED Display: You can enter a special low-brightness
mode by turning off the master power switch and turning it back on again
in less than a second. If you leave it off longer than a second before turning
it back on, normal brightness will return. (This does not affect the rack
lights.)
Rear view of PL-TUNER and PL-TUNER-E
Scale: Even Tempered, 12 notes per octave
Range: Seven octaves (C1 through B8)
Accuracy:± one cent (uses quartz crystal)
Noise Rejection:14 dB maximum noise level (white noise relative to sinusoidal
signal) at which tuner will still read accurately
Tuning Error Indication: Sharp & Flat LEDs: 4 blinks/sec for every 10
cents error
In Tune LED: ON at 1.5 cents error, OFF at 4.0 cents error
Mode Switching (FAST...SLOW): Automatic, 3 levels
Current rating: PL-TUNER: 15 amps; PL-TUNER-E: 10 amps
Input Voltage: PL-TUNER: 85 to 130 VAC; PL-TUNER-E: 195 to 260 VAC
Spike Protection Modes: Line to neutral, neutral to ground, line to ground
Clamping Voltage, all modes: PL-TUNER: 250V peak (177V rms); PL-TUNER-E:
500V peak
Response time: 1 nanosecond
Maximum surge current: 6,500 amps (8 x 20 µs pulse)
Maximum spike energy: 80 joules per mode; 240 joules total
Noise attenuation: Transverse and common modes: 20 dB at 200 kHz, rising
to >40 dB, 1 to 100 MHz
Agency Approvals: UL listed; CUL listed
Suggested U.S. retail price: $279.50
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