Thursday, September 15, 2011

"opus dei" - Monacor SPH-170TC excursion test

the second "player" is a RFT B7186 full range bookshelf speaker (10w 4ohm), i have a pair of theese powered by a homemade 2x10-15w amp. back to the sub: -6.5 inch monacor sph-170tc dvc woofer (parallel wiring), more details here: monacor.ro -the amp used is the plate amp from a 5.1 altec lansing 151i, low power compared to the woofer so i get distortion. this is only temporary. -the enclosure: 17 liter sealed, and overdamped Qtc around 0.5, stuffed with two pillows, polyfill i guess/hope. -although far from perfection, it sounds pretty decent. it gets a bit boomy in 50Hz region depending on placement, and it hits 30Hz. good for music, and decent for movies. but there is room for more. -so i will modify it into a ported enclosure, Vb will change, there will be 4 downfiring ports (you can see them near the enclosure) tuned to about 25Hz. it will be interesting. -i will update as soon as it gets done. Bass test used MFX150's opus dei. www.youtube.com

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