Quote Originally Posted by KG's Supra24 View Post
This is essentially what i was wanting expansion on in one of the other threads.

Let me give an outline and maybe you, or someone, can expand.

Re-setup the gains: this is essentially turning the head unit to max volume and turning the gain up on the amp until you begin hearing distortion. Then bring it back down a couple notches?

Freq sweep the subs: Not sure what you mean? Setting the sub amp freq to 60-80 hz?

Adjust subsonic filtering: Highpass the towers and in boats if you have a dedicated sub?

Eliminate bassboost: If th sub amp has a boost, turn it off?

Integrate crossover slopes to flatten out over all tone: I dont have a clue here.

I put question marks next to everything because i just don't know. These are the questions I was looking for answers for in one of the other threads. I was hoping your OP would address these issues.

I was hoping to find answers to the above as well as from other guys that have done it themselves. Have you had yours next to a professional tuned boat? Can you tell the difference? What general guidelines did you follow?
Ok brothern let me see if i can help you out here.

System setting to start all flat. This is Deck setting. No treble or bass boost. Turn off the Loudness.

If you use an Iphone or something that has a built in EQ set it to off.

OK for a basic nitty gritty way to assume your deck is producing clean power you use 75% of its volume adjustment. Lets say Kenwoods because most i have seen have 35 on the dial at max. So 30 is the real max i use to make sure its producing a clean signal.

When talking distortion it comes in many varieties but the main one we are concerned with it the type that destroys the amps and speakers.

OK now that Deck is set, you will tune each amp separately now.

Cabin amp. Set gain to lowest point. Now on the amp if you dont have a distortion light or sensor and the only ones i see that do are high end ones like the ones i use.

Lets assume the amp will start producing distortion at 75% also < relative to the gain setting> Rule of thumb is you generally don't gain over 60% on the amp.

Now play some music and with your cabins what your looking for first is high pass > mid bass and tweets < and you slowly turn the gains up till you see or hear this. See the woofer over working < excursion > is maxing out. Or you hear the woofer sounding like its working to hard. The music should sound really clear. Basically at this point if the amp has frequency setting you will prolly you turn this up till its around 120 hz.

Now that that's done you will do the same with the sub but its going to be set closer to the 60-80 hz range most likely You will adjust the gains the same way watching how fare the woofer is throwing. If you get a nasty punchy sound then you need to turn your gain down or change the frequency setting.

You will do this for your tower amp or the speaker the same way.

This gets you tuned so your not blowing your system.

Your direct questions.
Freq sweep the subs: Not sure what you mean? Setting the sub amp freq to 60-80 hz? Means to flatten it all out at a ) setting

Adjust subsonic filtering: Highpass the towers and in boats if you have a dedicated sub? No this is a setting the sub amp should have its a type of frequency i cant explain this as i just dont quite understand it eather but to me it makes the bass more punchy sounding

Eliminate bassboost: If th sub amp has a boost, turn it off? Yes turn off bass boost settings and loudness setting.

Integrate crossover slopes to flatten out over all tone: I dont have a clue here. Same as the subs it just means you want all the deck settings, and ipod or what ever settings at 0. This way when your setting the gains you don't have exaggerated frequencies your compensating for

I hope this at least clears some of it up for you, Im no pro but id like to think i have a clue most of the time.

After you have all this set up then you can listen to the music and see how it sounds, and if its not to your liking you can then adjust settings, this was just a nitty gritty fast way to get the most clean sound out of the system.

As for my system in my boat i run it all flat and its amazing sounding. I can link you several threads from last spring on it and on my sound tests we did.