Flat Frequency Response on your Speakers - Does it matter?

So... Does it matter if your frequency response of your speakers is flat? When building speakers, testing and tuning is a critical part of the process. In room frequency response, as the listener hears it, can be very important. What's the difference of 3 Db, 10 Db or 20 Db on a frequency sweep?

You'll need to watch and find out, in this testing, assessing and tweaking phase of the bass response of my Jensen CS-315 Vintage Speaker RestoMod Project from early 2022.

I'll be measuring the in room frequency response of each speaker individually, as well as both speakers together, so what you'll see is the "character" of each speaker, and the character of two speakers at the same time. The two speakers playing the same tone simultaneously results in what appears to be an exaggerated frequency response, but is accurate of what the listener would hear with both speakers playing and the resultant constructive interference. That is to say, two speakers with frequency response character flaws results in summed frequency response total.

Those areas of each speaker's frequency response shortcomings will be more evident with both speakers measured... Which after all, is more representative of what we "hear" when listening to stereo. I'm not sure anyone enjoys listening to one speaker... No, we usually have at least 2 playing, making combined summed totals including constructive interference all the more important.

For measuring this, I'm using the Dayton OmniMic and accompanying test DVD. The Mic is setup on center with the speaker cabinets, roughly 3 feet (one meter) away from each speaker.

Thank you for watching this bit of a filler video, while I continue to setup the new YouTube Studio / Sound Studio.
00:00 Introduction Jensen CS 315 Final Tweaks
00:40 Building Speakers Takes More Than Just Buying Components
01:52 Bass Frequency Response Problems Revealed
02:23 Why Frequency Response is Important
02:49 Why Frequency Suck-Outs Are a Bad Thing
03:39 Lets Talk Decibels / SPL Sound Pressure Level
04:16 What Does a 20 Db Difference Sound Like?
05:23 What Does a 10 Db Difference Sound Like?
05:38 How Frequency Response Changes Sound Quality
06:22 Why Fix an Uneven Frequency Response?
07:03 Why Frequency Suck-Outs are Bad? Example of a Frequency Response Suck-Out
07:40 What is a Frequency Response Test Used For?
08:11 Character and Sound Profile of a Speaker
08:53 Dayton OmniMic with Test DVD Explained
09:50 Both Speakers Frequency Response Short Sweep
10:13 Individual Speakers Frequency Response Test
10:47 What does Constructive Interference Do?
11:18 Bass Sweep
12:09 How Much Does Frequency Response Problems Affect What We Hear?
13:10 Listening Sample and Example of Frequency Response Problems
14:23 Outro Thanks For Watching!