Plan Requests - jbl 4512 (15" modification)

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jbl 4512 (15" modification)

Printed From: Speakerplans.com
Category: Plans
Forum Name: Plan Requests
Forum Description: All plan requests here
URL: https://forum.speakerplans.com/forum_posts.asp?TID=109363
Printed Date: 26 March 2026 at 5:30pm
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com

Topic: jbl 4512 (15" modification)

Posted By: oscario
Subject: jbl 4512 (15" modification)
Date Posted: 20 December 2025 at 11:50am

Anyone who could help with finding plans for a 15 inch version of the JBL 4512? Are these completely different cabinets (in terms of size) or do they use the same plans and are just fitted with a 15 inch driver?

Replies:

Posted By: VECTORDJ
Date Posted: 22 December 2025 at 5:22pm

hornplans.free.fr on web has plans for JBL midbass 4512....Also lots of Info on the Altec Forum...12 and 15 cab are the same...You might need a gasket to lift woofer off motor board ......