Appendix 1

The RC-5 Remote Control Protocol   The DIYHFS‟s UVC uses industrial standard Philips RC-5 code   The RC-5 protocol was developed by Philips in the late 1980s as a semi-proprietary consumer IR (infrared) remote control communication protocol for consumer electronics. However, it was also adopted by most European manufacturers, as well as many US manufacturersRead More

Appendix 2

–Features, Technical Data and Application Examples –Specifications –Application Examples Features, Technical Data and Application Examples 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 (-52dB to -6dB) 5 way Silver alloy relayRead More

4 – Using Universal Remote Controls to operate the Ultimate Volume Control

Control  The UVC can be remote controlled from any remote control that implements the RC-5 remote control protocol (see Appendix 1) and supports audio components (Amplifier/Preamplifier).   Examples of relatively inexpensive remote controls that are known to work are the Altronics stock number A1009 “Universal 6 in 1 Remote Control” and the Altronics stock number A0977 “6 InRead More

Appendix 3 

The UVC based 2 Channel buffered passive Linestage The picture below illustrates the complete installation of all components of the UVC system in a compact chassis, thus creating a complete passive buffered preamplifier with remote control (requires optional universal remote control). This project is in many ways comparable to “Aunt Corey’s Homemade Buffered Passive Preamplifier”Read More

2 – Audio Matrix Input connections 

Simply connect the Inputs using suitable wire or cable (shielded cable is recommended) from your input connectors to the UVC Module. Connections are labeled on the PCB.   Make sure the sockets used do not allow electrical contact between RCA Socket ground and the chassis. Connect each RCA input pairs ground connection to the middleRead More