JBL 4312A Control Monitor (1986)
While JBL makes a wide range of studio monitor loud- speakers,the most popular model has been a three-way, 12-inch control monitor.The current version of this speaker is the 4312A,which incorporates all the latestJBL advances in loudspeaker technology while retaining the classic sound that has made the model so popular.
Link for PDF: JBL 4312A Control Monitor (1986)
https://aboutprosound.com/wp-content/uploads/2022/09/JBL-4312A-1986-1.pdf
