TrueSpecs

Compare technical specifications (up to 4 speakers).

HiFi Ladder

Browse every speaker side by side, ordered by size or by price.

HiFi Search

Find speakers by the specs you want.

Compare speakers at true scale

Pick two speakers and see them side by side at their real-world size.

Speaker A
Speaker B
References

Front view — side by side at true scale

AATC SCM20ASLBJBL 4329P
ATC SCM20ASL front view
JBL 4329P front view

Click either cabinet to swap A ↔ B · Reference height: 516 mm (51.6 cm) · 1 mm = 1.09 px

Specifications

AB
ManufacturerATCJBL
ModelATC SCM20ASLJBL 4329P
Height450 mm516 mm
Width250 mm322 mm
Depth411 mm322 mm
Weight24.3 kg15.5 kg
Enclosuresealedbass-reflex-front
Drivers1× 25 mm tweeter (soft dome), 1× 150 mm mid-bass (cone)1× 25 mm tweeter (Annular Ring Teonex compression driver), 1× 200 mm mid-bass (Pure Pulp cone with black-paper cap)
Frequency — low55 Hz28 Hz
Frequency — high25000 Hz25000 Hz
Sensitivity
Impedance6 Ω
Recommended amp
MAP (USD)$6,990 / pair$4,500 / pair
Where to buyCheck availabilityCheck availability
Brand websiteatc.audioglobal.jbl.com
Product pageOpen product pageOpen product page

Larger value highlighted in green. For low-frequency extension, lower Hz = greater bass reach, so the deeper side is highlighted.