Preamplifier-level signals are
at their most delicate and it is at this stage which requires tube-type
amplification to preserve the signal's integrity. Many audiophiles and
music lovers prefer to use our tube preamplifiers with solid state power
amplifiers or powered speakers.
The Wright Audio L- 5
Preamplifier provides two
provide the gain, low impedance output and control functions necessary for a power amplifier driving a full-range
2.) In a biamplified
system to provide:
A.) A high pass output with adjustable low frequency rolloff
for use with a power amplifier driving the mid and high frequency ranges.
B.) A low impedance output for an
external subwoofer crossover / amplifier system.
To use the variable high pass
control and output, the input impedance of the power amplifier
between 100K and 500K ohms, a common specification for tube power amplifiers.
specification is provided by the power amplifier manufacturer and often can be
changed by a qualified technician to match the requirement if necessary.
The L- 5
Preamplifier offers the dynamics, soundstage dimensionality, nuance and
clarity which make listening to music the indescribable joy it should be.
Source Selector (Spare 1, CD, Tuner, Tape, Video, Spare 2)
Processor / Spare 3
Separate Left and Right Channel Level Controls for Channel Balance and to
match different power amplifier sensitivity specifications.
Main Matched-Channel Alps Custom Stereo Volume Control
Record Output Selector (Off, 1, 2, 3)
Low Frequency Rolloff Switch (Flat, A, B, C)
analog line level input except Phono or digital source with an analog
Best used with
power amplifiers having a sensitivity rating of 1 to 2 volts.
fixed-level outputs for recording devices or connection to a separate 'whole
house' line distribution amplifier or transmitter for wireless sound
Processor Loop which may be used with a frequency equalizer or similar
A variable high pass output for driving tube power amplifiers to the main
speakers in a biamplified system. This output provides 6db per
octave rolloff at approximately 100, 160, and 250 cycles as well as 'Flat'
(no rolloff). This output requires that the power amplifier(s) have an input
impedance of between 100K and 500K ohms (250K ohms optimum). Use with interconnecting cable up to 40 feet.
An output for driving
tube or solid-state power amplifiers, active crossovers and external subwoofer
This output is for devices with 25K ohms or higher input impedances.
Use with interconnecting cable up to 40 feet.
high quality RCA Input and Output jacks.
Highest-quality parts used based on listening tests. Uses ( 3 ) ECC83
type tubes. This type was chosen due to the widest variety of tubes
available to match sound to preference.
power supply eliminates A.C. fields and transformer mechanical vibration
from the main control chassis for lowest noise level and greatest sound
and Right Channel power supply capacitor banks for lowest inter-channel
crosstalk and best sonic imagery.
Frequency Response: 12
- 30,000 cycles, minus 1 dB points.
Harmonic Distortion: Under .05%, 2 volt output. Maximum output:
30 volts, both high and low-impedance outputs.
Heavy, one-eighth inch and
.090 thick black anodized aluminum panel construction with gold epoxy lettering.
Solid, dark oak side panels.
All point-to-point wiring.
Non-obsolescent construction. No circuit boards used for ease of
installation of upgrades.
(Control Unit + Power Supply):
18" wide X 10.5" high X 8.5" deep. Cable installation and changes
are exceptionally easy because of the shallow depth.
Weight: 21 lbs. total, both units. Net Weight: 15 lbs. total,
THREE YEAR WARRANTY
Available for 120 volts, 50 / 60 Cycles only. Detachable Power Cord.
Designed and Assembled
in U.S. using U.S. and