Feel & analysis
Bass weight
Bass weight is how much of a record’s energy sits down low — how physical it feels rather than how loud it is. A heavy track moves air you feel in your chest; a light one leaves the bottom empty.
In practice
Nearly everything in a club record bag is heavy. The light ones are what an opening hour is actually short of.
Go looking for light records deliberately — they never announce themselves in a store and they are what makes a warm-up feel like a warm-up rather than a quieter peak. When you do pair two heavy tracks, keep the overlap short and swap the bass early rather than riding both, because the limiter downstream is about to remove the punch from both of them. And judge weight on the floor: the booth sits in the worst seat in the room for anything below about 100 Hz.
Heavy
Almost all club music
The light ones
What a warm-up needs
Short overlaps
When both are heavy
Where these come from: How the low end behaves across a set — practice, not a setting. Our analyser scores bass weight from 0 to 1 and the median sits at 0.88 — the highest of any dimension it reads. That is a fact about club music rather than a useful way to sort your library, so no page here rates a record on it. For what we can measure, see the frequencies underneath it.
Why it matters
Almost everything made for clubs is heavy, which makes the light records the interesting ones. A warm-up hour needs tracks that leave space at the bottom, and most collections are short of them because nobody buys a record for being light — they buy the ones that hit, and then wonder why the first hour feels like it is already peaking.
It also governs how much room you have. Two heavy records overlapping is the fastest way to lose all your headroom at once, and the club’s limiter takes the difference out of the punch. A heavy record blended with a light one keeps its weight; two heavy ones together sound smaller than either alone.
Frequently asked
How do I find lighter records for a warm-up?+
Deliberately, because nothing markets a track as light. Look for records with space at the bottom — fewer sub layers, a kick that clicks rather than booms — and keep them together in their own crate.
Why do two heavy tracks sound smaller together?+
They use up the headroom, and the system’s limiter takes the difference out of the punch. Keep the overlap short and swap the bass early.
Is bass weight the same as loudness?+
No. Loudness is overall level; bass weight is how much of that level is low. A quiet record can be very heavy and a loud one can be thin.
Related terms
Sub-bass
Sub-bass is the lowest band of a record, roughly below 60 Hz — the part a club feels through the floor rather than hears. It is where most of a track’s physical impact lives.
Bass swap
A bass swap hands the low end from one track to the other in a single move: the incoming bass comes up at the exact moment the outgoing bass goes down, so only one record is ever carrying the bottom.
Headroom
Headroom is the gap between where your signal is sitting and the point where it distorts. It is the room left for the loud parts, and for whatever you do to the channel next.
Brightness
Brightness is how much of a record lives up top — hats, air, the shine on a synth — against how much sits underneath. A bright track leads with its top end; a dark one puts the weight low.
Explore: Spectrogram analyzer · Sub bass · Bass swap · All DJ terms