so ive been on HF for about two years now mostly doing digital but lately ive been spending more time on phone and honestly my SSB audio has been bugging me. people tell me i sound 'ok' but i want better than ok. running an IC-7300 into a Heil PR-40 through a cheap interface i built myself, compression is set somewhere in the middle, and the TX bandwidth is at like 2.8k which i thought was the sweet spot but maybe not.

thing is i hear some guys on 40m that just sound absolutely phenomenal, like full warm audio with good presence and they cut right through QRM without sounding harsh or over-processed. and then theres guys running $3000 radios that sound like theyre in a tin can. so its clearly not just the hardware.

what are people actually doing settings-wise on the 7300 for good SSB audio? i know there's the TX tone adjustments in the menu and ive messed with them a little but honestly i dont fully understand what im changing when i tweak the bass/mid/treble there. is it worth spending time on the speech processor or does that just make things worse if you dont know what youre doing

the speech processor question is a good one and the answer is yeah it absolutely makes things worse if you just crank it. what it's doing is compressing your dynamic range so the average power goes up relative to peak, which in theory helps readability, but if you overdrive it you get this horrible splatter that bleeds into adjacent channels and everyone hates you. on the 7300 i keep mine around 4-5 out of 9, maybe 6 on a really noisy band. the trick is to not hear yourself getting louder — it should be subtle.

for the TX equalizer i actually run a slight cut around 200-300hz to reduce the boominess and then a small boost maybe around 1.5-2khz for presence, and i roll off hard above 2.8k. sounds counterintuitive to cut the bass but on SSB all that low end just turns into mud, especially when the band is busy. your PR-40 is a great mic for broadcast but its a bit bottom-heavy for radio work so compensating in the EQ makes sense.

also make sure your ALC is behaving — if its peaking into the ALC zone consistently youre already in trouble before the processor even does anything. watch that meter like a hawk when you first set up, talk at normal conversational level and set your mic gain so ALC is just barely touching on peaks.

honestly the biggest thing nobody talks about is room acoustics. i spent forever messing with radio settings and it wasnt until someone did a recording of me that i realized half my problem was room echo. i was in a hard-walled shack and it sounded like i was calling from a bathroom. threw up some moving blankets behind my desk and the difference was pretty dramatic, tightened up the audio a lot before it even hits the radio.

mic technique matters too, like keeping consistent distance from the element. i know it sounds obvious but i used to drift around while talking and the level variations were making the ALC go nuts which creates its own kind of distortion. stay about 2-3 inches from the PR-40 and talk across it slightly rather than directly into it, reduces plosives.