PMC twenty.21 Generations: Every Model Compared

Last updated: October 9, 2026

The PMC twenty.21 line on Speaker Ranking spans 2 generations and 2 models, from the PMC twenty.21 to the PMC twenty5.21. Ratings run from 1.3/5 to 1.6/5.

Each column below is one generation, oldest on the left. Each row follows one model into the model that replaced it; a long arrow means a model skipped a generation. Ratings are out of 5, and an estimated rating comes from measured models in the same family.

More from this brand: every PMC speaker ranked.

Generation by generation

twenty.21 to twenty5.21

The PMC twenty5.21 replaced the PMC twenty.21. It rates higher, 1.6/5 against 1.3/5.

Spec twenty.21 twenty5.21
Drivers 5.5” (140mm) doped mid/bass driver with cast alloy chassis, 27mm PMC/SEAS SONOLEX soft dome tweeter (ferrofluid cooled) 1x 27mm soft dome tweeter, 1x 140mm woven cone mid/bass
Sensitivity 83dB 86.5dB
Weight 11 lbs (5 kg) each 13.2 lbs (6 kg) each

Frequently Asked Questions

How many generations of the PMC twenty.21 are there?

Speaker Ranking covers 2 generations of the PMC twenty.21, from the PMC twenty.21 to the PMC twenty5.21.

What replaced the PMC twenty.21?

The PMC twenty5.21 replaced the PMC twenty.21. It is rated 1.6/5, against 1.3/5 for the PMC twenty.21.