LB7: 02 LB7 Audio Overhaul

[fl0w3n]

What is your source audio? Are you sticking to CD's or are you using some sort of lossless format and keeping it all digital?

I sometimes still use CD's but I have such a wide range of taste and change from one thing to another so quick that I'll probably never get away from using Apple music through USB on my phone.

At a certain point, that source would become the bottle neck in the sound wouldn't it?

 

[Bdsankey]

What is your source audio? Are you sticking to CD's or are you using some sort of lossless format and keeping it all digital?

I sometimes still use CD's but I have such a wide range of taste and change from one thing to another so quick that I'll probably never get away from using Apple music through USB on my phone.

At a certain point, that source would become the bottle neck in the sound wouldn't it?

I'm going to be listening to mainly my iPhone or XM. The quality/compression on those formats isn't great. For sound quality a FLAC file or other lossless format would be ideal. There are lossless streaming apps which make this possible. The goal of the DSP is to make sure the signal (regardless of format/audio quality) is clean and adjusted well for the listening environment.

 

[fl0w3n]

I'm going to be listening to mainly my iPhone or XM. The quality/compression on those formats isn't great. For sound quality a FLAC file or other lossless format would be ideal. There are lossless streaming apps which make this possible. The goal of the DSP is to make sure the signal (regardless of format/audio quality) is clean and adjusted well for the listening environment.

Interesting, I kind of missed the DSP part.

So you'll run the preout of the Audio Control D-4.800 to the sub amp?

 

[Bdsankey]

Interesting, I kind of missed the DSP part.

So you'll run the preout of the Audio Control D-4.800 to the sub amp?

I'll run front and rear RCA from the headunit to the Audio Control D-4.800. I will then run an RCA cable from the D-4.800 to the LC-1.1500. I will set the gain on the LC-1.1500 like a typical amp but I will max the lowpass filter out as I will control it directly with DSP inside the D-4.800. I will not be using rear channel audio but I would like it ran in the event that I choose to. I will also be running a set of RCAs for the sub amp incase I change amps (I don't want to route wires more than I have to).

 

[Bdsankey]

I got 2 of the 4 subs today. I will say, these things are BEEEEFFFYYYYY! 80oz magnet is no joke.

 

[bigmackmiller]

Damn, they are like fat midgets!

 

[Bdsankey]

Damn, they are like fat midgets!

I thought the same thing! 5lb magnet on a 6.5” sub. They’re rated for 350rms and I don’t doubt that one bit.

 

[fl0w3n]

Any updates? Just swapped my fronts from the Kicker co-ax's that the truck came with to my CDT ES Gold's and dang what a difference, even without an amp. So I'm excited about audio right now.

Really curious to see how the box turns out, especially if you're able to share it afterwards.

 

[Bdsankey]

No update yet, still haven't gotten the box design from the guy yet. 2-3 weeks has turned into 2-3 months apparently.

 

[CDmax16]

I have modified my plans a little, but I did get a sub box ordered from MTI Acoustics. I got a stage 1 with up firing and recessed subs. I had it finished in black carpet and picked up an emblem to figure out something cool to the front of the box. I’m hoping to have the box next week.

 

[Bdsankey]

I have modified my plans a little, but I did get a sub box ordered from MTI Acoustics. I got a stage 1 with up firing and recessed subs. I had it finished in black carpet and picked up an emblem to figure out something cool to the front of the box. I’m hoping to have the box next week.
View attachment 104325

I'm excited to see how it turns out!

 

[bigmackmiller]

MTI makes some nice looking boxes, messaged him a few times to get a GMT-800 crew box made but no luck

 

[Bdsankey]

MTI makes some nice looking boxes, messaged him a few times to get a GMT-800 crew box made but no luck

I supposedly should have my box design this week. A little late but once I have it I'll be happy.

 

[CDmax16]

I have called the sales number a couple of times now, and I think it is his cellphone, Jim has answered every time. He does a bunch of YouTube videos for them. He was cool and they build some awesome looking boxes. I will let you guys know pretty soon how they sound.

 

[Bdsankey]

Got the box design. He designed it to 1.82 ft3 and tuned it to 32hz. Doesn't look all that bad to make. This is designed for GMT-800 crew cab trucks.

 

[SmokeShow]

I'm dumb, is the black hole a port? Is that how the box is tuned to a specific frequency?

 

[Bdsankey]

I'm dumb, is the black hole a port? Is that how the box is tuned to a specific frequency?

That is the port. Port length, diameter/size, etc all play into tuning as well as overall volume


Sent from my iPhone using Tapatalk

 

[CDmax16]

Does it sit vertically behind the seat or flat underneath it?
I would love to hear those 6.5’s. My buddy Rusty that owns DC Audio built a box for four of his 8” subs and I was amazed at how good it sounded. He’s got a video of it YouTube.

 

[Bdsankey]

Does it sit vertically behind the seat or flat underneath it?
I would love to hear those 6.5’s. My buddy Rusty that owns DC Audio built a box for four of his 8” subs and I was amazed at how good it sounded. He’s got a video of it YouTube.

It sits vertically behind the seat.

 

[fl0w3n]

Nice! Is he building it for you, or did he just design it for your use? Is there any internal baffling?

If it's meant for you to build on your own, isn't it missing the dimensions on the face of the box?

Got the box design. He designed it to 1.82 ft3 and tuned it to 32hz. Doesn't look all that bad to make. This is designed for GMT-800 crew cab trucks.