JBL 4312-MK2 4312B- MK2 crossovers NEW (each) | eBay
4312mk2 - JBL 4312mk2 - Audiofanzine
Just picked up a set of super clean JBL 4312 Control Monitors to replace my Marantz Imperial 7s. The Sansui 881 powers them quite well! : r/vintageaudio
JBL 4312 Control Monitor. Speakers Pair | Reverb
JBL 4312 Control Monitors - "Killer", With Stands - SOLD – Holt Hill Audio