This area of the community is for Bose Portable PA owners who want an answer from a Bose employee. Posting here will notify a Bose employee by email, and the typical response times range from 12-24 hours if you post during service hours (see below) and 24-48 hours on weekends and US holidays.
You can also ask your question in the general forums where one of our knowledgeable Bose user community members can help you.

To ask Bose for help, click POST.

Support Contacts in Europe, UK, North America

Additional information can be found at the Bose Portable PA Wiki, where advice has been accumulated for over 12 years.

If you are looking for information about other Bose Products please contact:


Hi Mic,

This is a great question. I'll start out by saying compression is a huge topic and there isn't necessary a best setting, though there can definitely be wrong settings.

Sometimes, maybe often times, the best setting is Bypassed.

"Threshold" is a setting that is entirely dependent on the source material. A more negative number will result in more compression. The closer the Threshold number is to 0 (which is the top of the scale in digital terms), the less compression there will be.

The top meter on the screen shows how much gain reduction is occurring. Roughly, each hash mark is about 2 dB of reduction. (No metering would indicate no compression, which means the signal is below the Threshold setting.)

Here's where I would start:
- Use the Light Compression setting
- Leave the Gain at 3.0 dB
- Set the Threshold so that on the louder parts of the performance, the meter at the top of the screen is hitting between the 1st and 3rd hash marks (starting at the right side of the screen). This would then mean that for the softer and mid-volume parts, there may be no compression happening at all. That's perfectly fine and probably desired.

Hope this helps,

Add Reply

Likes (0)
Having trouble signing in?

We recently updated our sign-in procedure and if you have old sign-in data cached, this can create a problem. Please:

  1. Clear your browser cache and cookies
  2. Then close the browser (not just the window)
  3. Open the browser and try again
Thank you

Please make sure that your profile is up to date