Just checked the slope on my amp, and it says it has a 24db/octave variable crossover, but also says it has a 24db/octave slope. I'm guessing that means my slope isn't adjustable? And at that sounds like it's going to be pretty much all or nothing.

Amp manual:
http://www.sundownaudio.com/SAZ1000D_1500D_3000D.pdf

It's the 1500D.

Any advice on where to set my crossover? 100Htz?

In actuality, not too sure where to set any of my filters. I do have a link to a thread about how to properly set gain, using a multimeter.

http://www.soundsolutionsaudio.com/forum/i...amplifier-gain/

I like how it's more mathematical than just "Go with what you feel" :-P

 

Well, the problem with the mathematically setting your gain is that while you're going to be sure it's mathematically correct, you might have distortion.

Granted, some speakers are built so well that the distortion is very hard to hear.

The best way to set the gain is to use an O-scope, a spec-an, and listen for distortion all at the same time (check for clipping, check output frequency dropoffs/power, and make sure it sounds good).

What sub do you have Jaeden?

 

Getting an Icon 10D1. Running it in parallel to produce 2 ohms to the amp.

http://www.soundsolutionsaudio.com/index.p...ation/icon.html

 

Are you looking for SQ or for volume?

 

haha. The infamous impossible answer of both. I'd like to to try to balance them, if at all possible.

 

Well, here's the deal...

A high sound quality system will be loud - incredibly loud. You just won't be able to tell. Both systems I have are so clean that you cannot tell just how loud the music is till you try to talk and find you can't hear the person sitting next to you yelling.

Given that it's a 10, I would probably set the LP to around 100Hz. What HU do you have?

 

IDA X305. I've got my build thread I'm getting ready to bump. You can see all my stuff I've got in there. 2nd page first post is my final setup.

 

most people run class D amps to power their sub, and since OP didn't mention it, I automatically assumed it is a class D.

Class D amplifiers are PWM devices, thus they are Push only amplifiers. Yes, if we are talking about class A/B amps, then the firing direction would not change.

 

I'm not an EE, but hopefully one will chime in.
I believe all amplifiers, class-D or otherwise, produce an AC output signal, which by definition constantly switches polarity, and thus neither the amp
nor the speaker would know or care which way it (individually) is hooked
up. Of course if you are combining multiple speakers, you care about
phase so they don't cancel each other out, and I would guess a DVC sub
could be damaged if you hooked up the individual voice coils with different
polarities, but that's not what we're talking about.

 

Oth, Class D amplifiers are switching amplifiers as opposed to Full/Half-wave amps (Class A/B). The way they reproduce frequencies is to switch power output on/off. This causes an "ac-like" signal, but it's really just variable DC, no true wave to it.

Think of it like this:

Class A, A/B, B = CD wave output
Class D = digital output


Now, whether or not that decreases the power handling capabilities of a subwoofer depends on the design of the subwoofer. There's no real reason to believe that a well-designed subwoofer has less rear excursion than frontal excursion. However, subwoofers really aren't designed to run backwards.

Because adjusting phase doesn't shift which way the subwoofer fires (how would it fire 90* out? ), rather shifting when the signal arrives to the subwoofer, adjusting phase through the HU/amplifier would be preferable to switching leads.