---
title: "Settings for NRSC Pre-Emphasis in VOLT AM"
slug: "settings-for-nrsc-pre-emphasis-in-volt-am"
updated: 2024-12-17T13:27:05Z
published: 2024-12-17T13:27:05Z
canonical: "docs.telosalliance.com/settings-for-nrsc-pre-emphasis-in-volt-am"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.telosalliance.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Settings for NRSC Pre-Emphasis in VOLT AM

## Scope

How to set the VOLT AM up for the "actual" NRSC Pre-emphasis curve.

## Description/Problem

Q: I want to be sure that the Volt is providing the proper NRSC pre-emphasis curve for my AM transmitter. I do not see anything to directly set the preemphasis. Am I missing something?

## Solution

A: The AM pre-emphasis is set using the HF-EQ Pre and/or Post controls in the INITIAL / ENHANCERS menu. So pre-emphasis can (uniquely to the Volt AM) be added before and/or after the MB limiters.

The "actual" NRSC curve is achieved with a setting of 10.00 dB. Either 10 on one control or a combination of the two that add up to 10, such as 5 & 5 or 4 & 6 for example.

Our "AM Guru" Ted Alexander wrote this when we were developing the Volt

> *With the Pre only, much of what was EQ'd up, was "taken out" by the limiter after just 3 or 4 db boost. Using the Post only EQ, when I got closer to 10 db boost, the HF started sounding kind of "grainy". By applying about half (give or take several db) both Pre and Post, I was able to get a significantly better AM Pre-emphasis "sound". As of today, I kind of like the way it sounds with 4db of Pre and 6db of Post.*

Here, it is set for 4dB Pre and 6dB Post:

![](https://cdn.document360.io/57e3cd80-d493-453c-9672-ad1b043dadc3/Images/Documentation/5cc7da75-1447-47d3-870a-10911fd48213-volt-am-nrsc.png?sv=2026-02-06&spr=https&st=2026-10-28T15%3A42%3A12Z&se=2026-10-28T16%3A42%3A12Z&sr=c&sp=r&sig=IYVaVlqjqHPyLeAGVWBFHST7d%2FF4nNCLcT5CmIi0PVo%3D)

## Let us know how we can help

If you have further questions on this topic or have ideas about improving this document, please [contact us](https://www.telosalliance.com/support-request).