newls1 Posted July 17, 2008 Report Share Posted July 17, 2008 (edited) I have a US Amps MD3D coming tomorrow and was just trying to gather some info as to where to set the Frequency adjustment at, Sub-Sonic filter at, etc... This will be for my 2 18BL's loaded, in my 16cuft box Tuned to ~34hz... Thanks.... Edited July 18, 2008 by newls1 Quote I love my staffie So anti FACEBOOK it isn't even funny Link to comment Share on other sites More sharing options...
EricM9104 Posted July 17, 2008 Report Share Posted July 17, 2008 sub-sonic set to 25hz lpf set to 80-100hz (personal preference) Quote 2015 Honda Civic LX 4dr | 24k miles Stock H/U and mids/highs Power Acoustik GW3-12" D2 Sub HiFonics BXX1200.1D @ 1ohm Random 2.5^3' dual ported box NVX LOC Stinger wiring throughout 1977 Chevy SWB Cammed 350 Dual exhaust Cheap Wish stereo Link to comment Share on other sites More sharing options...
Boon Posted July 17, 2008 Report Share Posted July 17, 2008 I would set the subsonic to 34ish... mind you without an o-scope it's a bit tricky to set them as usually the dials don't have numbers Remember the subsonic isn't a dead cut, it's just a steep crossover. A 25hz subsonic will still result in quite a lot of power at 20hz, which in a box tuned to 34hz is going to cause a lot of excursion and unloading of the woofers Quote 10.x volts fo' life! Link to comment Share on other sites More sharing options...
AI James Posted July 17, 2008 Report Share Posted July 17, 2008 (edited) 31-32 on subsonic 70-80hz on low pass filter i guess you could have it a little higher if you have shitty mids Edited July 17, 2008 by Accordman Quote Link to comment Share on other sites More sharing options...
newls1 Posted July 17, 2008 Author Report Share Posted July 17, 2008 thanks all Quote I love my staffie So anti FACEBOOK it isn't even funny Link to comment Share on other sites More sharing options...
newls1 Posted July 17, 2008 Author Report Share Posted July 17, 2008 One other question: This is a mono d class amp, why are there 4 speaker connections? What is the proper way to wire this up if I only have 1 positive and 1 negitive wire? Quote I love my staffie So anti FACEBOOK it isn't even funny Link to comment Share on other sites More sharing options...
etaks_crew Posted July 17, 2008 Report Share Posted July 17, 2008 Not to familiar with that amp. Does it have 4 positives and 4 negitives if so it a four channel amp. I think mono just mean its 1 ohm stable. And not sure how youe should hook them up. P.S. If anyone can correct me if Im wrong Thx Quote Link to comment Share on other sites More sharing options...
newls1 Posted July 17, 2008 Author Report Share Posted July 17, 2008 It is certainly NOT A 4 channel amp, not a 2 channel amp, only a mono amp. Dont have it in my hands yet (waiting for UPS now) but from pics i've seen of it, it has 2 pos, and 2 negs Quote I love my staffie So anti FACEBOOK it isn't even funny Link to comment Share on other sites More sharing options...
etaks_crew Posted July 17, 2008 Report Share Posted July 17, 2008 So if it has to positives and two negatives dosnet that mean its a two channel amp? Or have I been getting this wrong for a while? Quote Link to comment Share on other sites More sharing options...
newls1 Posted July 17, 2008 Author Report Share Posted July 17, 2008 So if it has to positives and two negatives dosnet that mean its a two channel amp? Or have I been getting this wrong for a while? Dude, here is the amp, I'm not trying to be a smart ass, but you must have been wrong..... http://www.usamps.com/md_amps.html Quote I love my staffie So anti FACEBOOK it isn't even funny Link to comment Share on other sites More sharing options...
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