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LSK389-A JFET for Ultimate Volume Control System (pair)

LSK389-A JFET for Ultimate Volume Control System (pair)

Price: $30.00 (Pair)

These JFET are specially selected for our Ultimate Volume Control System. Grade A LSK389, loss range is only 2.6 to 6.5mA.

 

Function in Ultimate Volume Control System

Install them in the positions as provided on the Audio PCB to create a standalone Remote volume/selector system linestage with 50 ohm output impedance.

Install the system in a suitable box and ‘drive away’.

 

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Drill Template

Installation Manual

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Audio Board for Ultimate Volume Control (Op-amp free!)

Audio Board for Ultimate Volume Control

Price: $175.00

This Preamplifier Control System uses an electronic potentiometer as used in all current Audio Research Preamplifiers, unlike other common volume control chips this device does not contain a build in op-amp. The Preamplifier Control System consists of two PCBs: Audio PCB: 1. 2 channels 2. 5-way input switching, and 3. Volume control, can be configured as mono balanced or stereo single ended Features: 127 step volume control from -52dB to 0dB attenuation with 12 LED level indicators 5 Inputs with LED indicators Remote control via universal remote control (RC5 code) Options for shunt operation (-46dB to -3dB or -52dB to -6dB or -66db to -15db) 5 way Silver alloy relay input switching LED’s driven on/off, not “multiplexed” to remove digital noise Audio PCB includes option for fitting two LSK389B Zero FeedBack J-Fet buffer (direct coupled – no coupling capacitors) to make a stand alone buffered passive preamplifier with <50Ohm Output Impedance must be used together with a controller and ps.

Showcases:

Wedding Bells at DIYHFS

When is Ultimate Ever EZ?

Click link below to view:

Drill Template

Installation Manual

For other shipping options, Check our Website by clicking the icon below:

Store

online store

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Controller Board for Ultimate Volume Control System (op-amp free!)

Controller Board for Ultimate Volume Control System

Price: $95.00

Control PCB: 1. ALPS rotary encoders 2. LED indication of input & volume, and 3. Power-supplies and microprocessor control Features: Control PCB delivered as one PCB but allows “break-off” of the rotary encoder & LED parts (connection via 20-Pin IDC cables (supplied) Control PCB can control up to 3 Audio PCB’s (6 channels single ended or 3 channels balanced); with optional transformer can control up to 8 Audio PCB’s (16 channels single ended or 8 channels balanced) Control PCB connects to Audio PCB via 20-Pin IDC cables (supplied) Power Supply using schottky diodes and low noise regulators Torroidal mains transformer with 115/230V Primary capable of supporting 3 Audio PCB’s with buffer fitted included Mains transformer with 115/230V Primary capable of supporting 3 Audio PCB’s with buffer fitted included Gold plated, 70 micron Copper PCB’s

Showcases:

Click link below to view:

Drill Template

Installation Manual

For other shipping options, Check our Website by clicking the icon below:

Store

online store