Reply to thread

Message

<blockquote data-quote="Steven" data-source="post: 89936" data-attributes="member: 544311">I have designed a circuit board, and wrote program that automatically adjusts the GAIN on my amplifier if it detects a clippped signal.I&#039;d just like to know whether you guys think it is a good idea.The board uses an L-pad design so as not to alter the impedance of your load on the amplifier. Determined by hooking up a 4-Ohm speaker and measuring the impedance at the input side of the boardThe board needs 9 connections:4 for the speaker - One (+) off amp, One (+) to speaker, one (-) off amp, and one (-) off the speaker2 for gain control on the amplifier, you have to disable the on-board gain control and wire the board in its place - Voids the warranty but works.1 connects to the USB port on a PC/Laptop.2 for power/groundThe board takes the signal from the amplifier and converts it to a digital signal. This digital signal is then processed by the computer. The computer then tells the board too either increase/decrease the gain to maintain an unclipped signal.The only problem I had while testig the board was once the volume reached a certain level (about where it normally started to clip), the volume will not increase any farther but this is due to the limitation of the amplifier itself.Using a &#039;scope the board introduces a little noise (not even audible, seeing as how I had to use a scope to find it) into the system, but hey, every amplifier / HU / EQ / Signal processor introduces noise into the system</blockquote>

[QUOTE="Steven, post: 89936, member: 544311"] I have designed a circuit board, and wrote program that automatically adjusts the GAIN on my amplifier if it detects a clippped signal. I'd just like to know whether you guys think it is a good idea. The board uses an L-pad design so as not to alter the impedance of your load on the amplifier. Determined by hooking up a 4-Ohm speaker and measuring the impedance at the input side of the board The board needs 9 connections: 4 for the speaker - One (+) off amp, One (+) to speaker, one (-) off amp, and one (-) off the speaker 2 for gain control on the amplifier, you have to disable the on-board gain control and wire the board in its place - Voids the warranty but works. 1 connects to the USB port on a PC/Laptop. 2 for power/ground The board takes the signal from the amplifier and converts it to a digital signal. This digital signal is then processed by the computer. The computer then tells the board too either increase/decrease the gain to maintain an unclipped signal. The only problem I had while testig the board was once the volume reached a certain level (about where it normally started to clip), the volume will not increase any farther but this is due to the limitation of the amplifier itself. Using a 'scope the board introduces a little noise (not even audible, seeing as how I had to use a scope to find it) into the system, but hey, every amplifier / HU / EQ / Signal processor introduces noise into the system [/QUOTE]

Verification