Some of you probably saw my thread and videos of this build from last year.
Here
http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/619327-4-sq-hds312s-4th-order-blow-through.html
Since this was finished we've swapped the Pipe for a Taramps 8k and it's beating this box to death. Even with the 2x4 internal brace the top and bottom of the box flex like crazy. It's about as bad as the windshield. I never was truly happy with my design to begin with because it didn't offer any simple access to the subs should something break. So we're going to rebuild out of oak ply this time and change up the orientation a bit. I need y'alls help though.
Current specs are about here.
4.7 net sealed
11 ish net ported
49hz w/ 224 sq in port
I was thinking of dropping the sealed section down to 4 since we have plenty of power on tap and staying at the 10-12 ported for a 2.5-3:1 ratio. I don't want to lose bandwidth but I also don't want to lose output. I'm thinking that the flex of the box is causing the 'muddy' sound we hear in it now. It's almost like the vibration of the wood against the bed is introducing undesirable sound into the box and coming into the cab. It may just be how the HDS3 is but I've never loved the sound. I want to keep the 20-50 range without a ton of rolloff and I'd like to see some hair tricks if that's possible so any tuning recommendations will be considered.
The new design puts the sealed section on the top of the box with the motors hanging down into the ported section and there will be a rubber bed mat under the box this time. I'm leaning toward a wide octoport or maybe just a rectangle like it is now. Not sure yet. The tools I have now compared to last time is going to make a huge difference in build quality so I'm looking forward to it. Completing the design this weekend and picking up materials next week. I'll post pics and vids as I go.
Added 40ft of JY 1/0 wire a few days ago. It's a bit cluttered but all connections are solid and hanging in the 13.5 - 14 range on music. Test tones drop it into the 12s but still safe. It was hitting 10.8 before this.
Stock alt + 240 amp and 3 Optima Yellow Tops.
Here
http://www.caraudio.com/forums/car-audio-build-logs-cars-trucks-suvs/619327-4-sq-hds312s-4th-order-blow-through.html
Since this was finished we've swapped the Pipe for a Taramps 8k and it's beating this box to death. Even with the 2x4 internal brace the top and bottom of the box flex like crazy. It's about as bad as the windshield. I never was truly happy with my design to begin with because it didn't offer any simple access to the subs should something break. So we're going to rebuild out of oak ply this time and change up the orientation a bit. I need y'alls help though.
Current specs are about here.
4.7 net sealed
11 ish net ported
49hz w/ 224 sq in port
I was thinking of dropping the sealed section down to 4 since we have plenty of power on tap and staying at the 10-12 ported for a 2.5-3:1 ratio. I don't want to lose bandwidth but I also don't want to lose output. I'm thinking that the flex of the box is causing the 'muddy' sound we hear in it now. It's almost like the vibration of the wood against the bed is introducing undesirable sound into the box and coming into the cab. It may just be how the HDS3 is but I've never loved the sound. I want to keep the 20-50 range without a ton of rolloff and I'd like to see some hair tricks if that's possible so any tuning recommendations will be considered.
The new design puts the sealed section on the top of the box with the motors hanging down into the ported section and there will be a rubber bed mat under the box this time. I'm leaning toward a wide octoport or maybe just a rectangle like it is now. Not sure yet. The tools I have now compared to last time is going to make a huge difference in build quality so I'm looking forward to it. Completing the design this weekend and picking up materials next week. I'll post pics and vids as I go.
Added 40ft of JY 1/0 wire a few days ago. It's a bit cluttered but all connections are solid and hanging in the 13.5 - 14 range on music. Test tones drop it into the 12s but still safe. It was hitting 10.8 before this.
Stock alt + 240 amp and 3 Optima Yellow Tops.
