1999 Chevrolet Blazer - Stereo Integrity, Ground Zero, Soundstream

[gckless]

Little update:

I have found thermal limit on these subs to be around 3600W, set with a 0dB tone. Any more power than that and the motors start heating up pretty quick. It's a bit of a bummer, because they have a lot of throw left. I may also be doing something wrong, but I don't think so. Nevertheless, I'll be doing more tweaking and testing over the coming weeks. These subs are mainly built to sound great at decent levels, so I can't say I'm super disappointed. Once my Levi gets back I will be much more focused on tuning the front stage, and the system as a whole, so I won't as be worried about getting the subs as loud as possible. I'll be focused on my original goal, dat SQL.

The good news is, the problem I was having with the PRs bottoming out will no longer be a problem, at least definitely at this tuning (I'm at 30Hz right now). I'll be playing more with tuning, now that I know where I have to leave power. It is a balance, though I'm positive I can tune down and still be alright. How much weight exactly I can add before it overcomes the suspension, well that's something I will find out.

If I do get bored with this, plan is to sell these subs, buy a pair of Tantric HDDs, and build a regular ported box. But that's not gonna happen for another couple months.

Oh, and my door panels are being sent off to 04murdalanche as soon as I get a shipping label for a proper fiberglass treatment

[gckless]

Was told I was definitely over 170dB by some dude I gave a demo to at the local car show tonight. Lulz.

[gckless]

Couple photos from tonight:

[gckless]

Tried some Plasti Dip today, my first time. Just did the badge on the front:

Gonna eventually get a new grill, because this one is cracked and the chrome is worn. I do like the stock grill though, and will Plasti Dip all the parts black that aren't chrome. Should look good. Gonna get new lights sometime too.

Wanted to Dip the wheels, but they're gonna be a bitch to do the full wheels. Have to take them off to do it, and I don't have 4 jacks. Might end up just doing the outside face.

Also been fighting with the dang daytime running lights and the auto-on lights feature. Can't figure out the DRL's, but haven't tried the auto-on trick yet. They are separate issues from what I have read.

[sounddesires]

Lookin badass man

[gckless]

Horrible picture, but yep, she's back.

Midbass is still way lacking. But, I haven't touched the EQ at all. I'm gonna clean up the wires inside the box and run the auto EQ and T/A this weekend. Going to document before and after RTA graphs as well (well, I hope I remember).

My door panels are currently in 04murdalanche's hands. I'll have them back by Heatwave

[Karkov]

Hell yea man, plenty to do yet, fun never ends, haha

[gckless]

Aaaaalright, pretty big update. Finally got all my tools to test and tune, including this guy:

So I scoped my HU first. Did all three pre-outs. Got some weird things on the high (tweeter) channel. It wasn't clipping, but above 52/62, I got distortion at the peaks of the waves. I can't figure out how to get pictures on the scope off of it yet, but it looked like this:

Can anyone help me interpret that?

But the mid channel never clipped or got distorted. The sub channel had no clipping at 60/62, but hard clipping at 61/62. I set all gains at 51/62 because of the distortion I was seeing on the tweeter channels.

So then I set my gains. EQ was flat, so I sent 110W to each mid, and 70W to each tweeter. I'm sending about 4500W at 0dB (which is about 2300W at -3dB) to the subs. Then I ran the auto T/A and EQ on the 80PRS. It does a couple things that you have to go back and look for, like sub LPF and mid HPF and slopes.

When you're looking at these RTA graphs, pay attention to the blue top lines. those are the peaks, and the results from the sweep. I took these pictures after the sweep was done, at volume 0, which is why the red bars are so low.

So, first I RTA'd the low end, ran a 20-250Hz sweep. Got this:

Kinda don't know why I did that. I then ran a 2 minute 20-20kHz sweep. This is the result:

Determined that the sweep was way too fast for the mic/software to pick up on the lower end. So then I cleared the RTA, broke it down, and ran a 90 second 20-1500Hz sweep. Then I kept the results, and ran a 90 second 1000-20000Hz sweep. This gave me accurate results across the whole range, that look like this:

I just need to cut at 1kHz and 2kHz, and I should be sounding pretty good. It already sounds great, and the cool thing is I can hear the peaks at 1k and 2k.

Here's a quick video:

http://www.youtube.com/watch?v=jHZOWnyA02c&feature=youtu.be

Gonna clean the wires tomorrow.

[bighossf150]

Got my buss bars installed this morning.

Kudos to PapaGeno21, he made these, and they were perfect, dropped right on to the terminals without me having to move the batteries at all. Wiring still isn't real clean, but better. Can't really do TOO much with that temp amp in there. I'll be doing cable management once the Levi gets back and I can get that MTX out of there.

Really the only thing left to do is figure out how I'm gonna cover the mids.

By the way this tuning is so much better for my tastes.

Finally vacuumed and cleaned the truck too. Gonna head down to the weekly car meet tonight, we'll see what happens.

that techflex looks familiar lol, set ups looking good man

[gckless]

Got my buss bars installed this morning.

Kudos to PapaGeno21, he made these, and they were perfect, dropped right on to the terminals without me having to move the batteries at all. Wiring still isn't real clean, but better. Can't really do TOO much with that temp amp in there. I'll be doing cable management once the Levi gets back and I can get that MTX out of there.

Really the only thing left to do is figure out how I'm gonna cover the mids.

By the way this tuning is so much better for my tastes.

Finally vacuumed and cleaned the truck too. Gonna head down to the weekly car meet tonight, we'll see what happens.

that techflex looks familiar lol, set ups looking good man

Thanks man! Really diggin it now, it's startin to sound damn good. These Anarchy's are the biz.

And yeah, the tech flex is good stuff!