crown XLS 1500 is worth the money.
unfortunately the DIY shaker did not meet my expectations.
after putting 95% power to the two DIY shakers using a 50Hz test tone, i started to smell plastic burning.
i shut the amp off, and saved the DIY shakers.
DIY shakers still intact.
I decided at that point,
NO DIY shaker in my custom wood chair because:
a) i dont want to build something that might get burnt out.
b) DIY shakers required extensive modification to my chair in order to make a solid mount between the chair frame and DIY shakers. (didnt want to have 16 bolts to fasten the two shakers)
ultimately i choose Buttkicker LFE and Crown XLS 1500. they both have thermal protection and good quality. and the butt kicker mounted to my chair with some effort..
DIY Shaker WIP
My sim chair with buttkicker and amp.
at moment, i am waiting for a DAC (digital-to-analog converter) to come in (ordered behringer UCA202) because the amp requires a RCA line-level input. i hope to test on wed, with Euro Truck Simulator!