L-5 Preamplifier

The Wright Audio™

L-5 Stereo Preamplifier and Control Center

Just Listen.

Since 1989, Wright Audio has been known for its superlative tube preamplifiers and we are proud to continue that tradition with the introduction of the L- 5 Line Preamplifier.

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.

The Wright Audio L- 5 Preamplifier provide two important solutions:

1.) To provide the gain, low impedance output and control functions necessary for a solid-state or tube power amplifier driving a full-range speaker system.

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 should be between 100K and 500K ohms, a common specification for tube power amplifiers. This 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 has been designed to be compatible with the majority of tube and solid-state power amplifiers, providing the dynamics, soundstage dimensionality, nuance and clarity which make listening to music the indescribable joy it should be.

Features and Specifications

Controls
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)
Accommodates any line level input type.
Best used with power ampliifers having a sensitivity rating of 1 volt or higher and with low to medium efficiency speakers.
For Phono playback, the PH-2 Phono Stage is available, which connects directly to the L- 5 Preamplifier without requiring the external power supply.
Two switched recording outputs.
Fixed-level Line Output allows connection to a separate 'whole house' line distribution amplifier or FM transmitter for wireless sound distribution.
Signal Processor Loop which may be used with a frequency equalizer or similar device.
A High Impedance / Variable High Pass Output for driving 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.
A Low Impedance Output for driving tube or solid-state power amplifiers, active crossovers and external subwoofer systems. This output is for devices with 25K ohms or higher input impedances. Use with interconnecting cable up to 40 feet.
Gold-plated, individually-mounted RCA Input and Output jacks.
Highest-quality parts used based on listening tests. Uses ( 3 ) 12AX7 / ECC83 type tubes.
Separate, choke-filtered power supply eliminates A.C. fields and transformer mechanical vibration from the main control chassis for lowest noise level and greatest sound purity. Tube microphonic effects from the power supply are eliminated.
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 modifications and upgrades.
Overall Size (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.
Shipping Weight: 21 lbs. total, both units. Net Weight: 15 lbs. total, both units.
Warranty: LIMITED LIFETIME, Parts and Labor; 3 Years, Switches; 3 months, tubes.
Available for 120 volts, 50 / 60 Cycles only. Detachable Power Cord.
Made in U.S.A.

Price

$1250

Please contact us for a shipping quote.

Custom modifications of this preamplifier may be ordered to meet your specific requirements. Please inquire.