Reply to thread

Message: <blockquote data-quote="shredder1" data-source="post: 8883553" data-attributes="member: 658920">I'm in the middle of designing a 4th for a single Zvx-18 atm, can anyone tell me optimal tuning and airspace? I have ideas... Looking at excursion, velocities, phase, delay and impedance I may settle on 2.68ft3/5.36ft3 front chamber tuned 45hz /w/ 97.75in2 of port. Modeling the thing shows .7 rise /w/ a peak low 30's. Mind you this will have a sealed response under tuning so cabin size matters. Whatever... it looks like a solid 2.5K like a constant power 2500 would touch the limits @ 1 ohm as designed. 7db flat hump before cabin gain is simulated too. Basic 2:1 4th /w/ no frills. 20hz-70hz bandwidth in vehicle should deliver. Anyone have input or maybe tips?</blockquote>

Top