Setting Up Mic Gain and Compression
What are the best mic gain and compression settings? Using the Icom 7300 and Icom 7610 I have multiple mics to use. Each mic is a little different. I’ll show you how I setup the mic gain and compression on the Icom 7610 (also 7300) using a WGA TR-2000 headset. It’s pretty simple and I follow the manuals with one exception. See what that is below.
Mic Gain Setting
As in the manual, with compression off, I use the ALC meter. The manuals state, “In the SSB mode, touch the TX meter to select the ALC meter and adjust until the meter reading swings between 30 to 50% of the ALC scale.” – Icom 7300 Full Manual pg 3-11 or Icom 7610 Basic Manual pg 3-9.
Place the microphone 2 to 4 inches from your mouth, then speak at your normal voice. 30 to 50% on the ALC scale is all we need. Try “Ahhh…”
The important thing to note: Do not push the ALC out of the red zone.
Mic Compression Setting (Speech Processor)
This is where I stray a little.
After setting the mic gain with the ALC meter, switch to or look at the COMP meter. The manual states, “While speaking into the microphone at your normal voice level, adjust the Speech Compressor level to where the COMP meter reads within the COMP zone (10 to 20 dB range).” – Icom 7300 Full Manual pg 4-12 or Icom 7610 Basic Manual pg 4-8.
Using the WGA TR-2000 with compression set to 3, the compression meter doesn’t move. However, you’ll notice a distinct difference even at this low level. Watch the video below.
BM800 Audio Comp 3 Bass -2 Treble +4 TBW Wide 200-2900
TR-2000 Audio Comp 3 Bass -2 Treble +4 TBW Wide 200-2900
Later I decided I did not like the headset in this video. It has since been retired and I am using the Yamaha CM500. What do you think? Which microphone sounds better? Post your thoughts below in the comment section.
If you have any questions, comments or solutions, please comment below. I prefer the comment section here or in YouTube over e-mail because your comments and questions will help others as well.