Two things happen with my AM...

I have the SSTran AMT3000 and AMT5000 set for NRSC Pre-Emphasis, which is an equalization, and I have a bandpass set in Stereo Tool to stay within the 10kHz NRSC space.

But when I produce a radio program I only use EQ for special effects, like a telephone call filter or...

If I have material that needs correction I use EQ or...

The Noise Removal Tool in Audacity is amazing. Today a producer said she was disappointed by the blower noise in an auditorium that picked up during a lecture, so I removed it and might have a date for tonight.

I can custom EQ at source so I try to adjust it to sound just like the other stations. I'm on FM here in Canada.

Mark

Hi Wdcx: I Have Run EQ on both Am & Fm Transmitter and here is the result i had,But it doesn't mean that other people would have differents results.

1) Fm Transmitter - Used a standard setting on eq unless you had music/voice that had  allot of bass to the progarm that you where airing.

Note : If program and music setting was done right at the start with the balance of highs and low you can get away from using an eq which i did when i ran my Fm station and sounded great.

2) Am Transmitters - Using eq on am transmitter is a good idea,But it depend on the am transmitter and it's construction that i found out.

There so many different Am transmitter and design out there, It would vary on eq settings.

Example some am transmitter uses a audio transformer, but here is the issue with them. It depends on the audio transformer that was used in the circuit that will determine the effect on the audio frequency response range it has, so using a eq will help allot.

The eq which i used on my am transmitter that i had back in the 1980 sound real good, Big improvement.

You need to do test on various programs and music to make sure it doesn't wash out or sound like trash and always get a second opinion.

Some of newer am transmitter sound great out of the box, Like the SSTRAN 5000 phil did a great job, but i wish he had a stereo c-quam for the unit it would be even better on quality.

Another unit that sounds great is the procaster, But if you have to use a ground loop isolator ( transformer ) then you will need a eq do to your audio will be have allot of bass as mine did to get your high's back.

The Rangemaster 1000 no matter what you will need an eq for that unit, I had to have one for mine.

I hope this helps out Jeff

Thanks, jeff good info.

WDCX,

What sort of EQ are you talking about? A 31 band graphic EQ is very different from a parametric EQ.

A 31 band graphic EQ looks cool in a rack, but in my opinion as an audio purist, they are best avoided for broadcast work. The narrow notches on them and the filters used can do terrible things to the phase relationships between different frequencies. Part of that comes from the tails of the EQ boost/cut overlapping between sliders. (On the other hand, for live sound work a 31 band graphic EQ is great for killing a frequency that wants to cause feedback, but for live sound the havoc tight Q filters can cause will be less noticeable; and for live sound work it is possible to record/broadcast the show from a pre house-EQ point.)

A parametric EQ is an amazing tool. It can be used to give sharp or broad boost or cut over a variable bandwidth. So while any EQ messes up phase relationships, the parametric EQ is a bit gentler doing it.

Being an audio purist, if something can be done with a first order filter (in the case of a high or low pass filter just a capacitor or an inductor) then throwing a 4th order filter at it is excessively altering the audio.

DBX 1215-Dual Channel 15-Band Graphic Equalizer with Switchable