**update** Pictures Of My New Md3d Merlin Amp.....

[newls1]

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

[EricM9104]

sub-sonic set to 25hz

lpf set to 80-100hz (personal preference)

[Boon]

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

[AI James]

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

[newls1]

thanks all

[newls1]

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?

[etaks_crew]

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

[newls1]

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

[etaks_crew]

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?

[newls1]

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