I have an Inovonics 235 feeding a Sstran amt 5000. Over the past couple of years, I've tried to play it by ear regarding the modulation. I just got an Inovonics 520 AM mod monitor off of eBay. On the 235 I am able to adjust the negative output from zero to over 100%. I am unable to get 125% positive modulation. When I adjust the pos output on the 235, I'm not seeing much of an increase or decrease through the monitor. The positive modulation stays around 100%-110%. There is a slight decrease on the positive when I turn the neg mod to 0%. I can't get the positive to adjust to 0%. Any ideas on what could be wrong. Thanks
Audio is fed to 235 as follows: Arrakis Arc 8 console --->Whirlwind IMP Line Combiner --->235