Recently Browsing 0 members
No registered users viewing this page.
I got this 15in sub in a tuned 32hz box, 2400.1 D hifonics zues amp and tons of extra 0ga wiring for a trade. its been custom capped and even dude i got it from had no idea. so I'm wanting to check the specs on it so i know what it can do without smoking it. it laughs at the 2400.1 and it has more to offer im sure. i have a hifonics brutus 3016.1 D at my fingers so i wanna find out what i can. any help would be great.
Building a box for 4 sundown E8's to go in the trunk to sit flush against the rear seats and port out the rear seat opening (ski pass). The attached picture has a rough draft of the design it is a angled box with dimensions of 36"width x 14"tall x 16"top depth x 24"bottom depth. Volume of each sub camber (RED) is 1.344ft3 and port area (BLUE) is 1.5" wide with a area around 18.75 tuned to around 33-34 hz. Mainly just need to know what happens to that tuning once it reaches the center chamber (with the front of the subs) and out the ski pass.
I have Made a strong double floor/double baffle box with window bracing out of 3/4 MDF just a bit larger than spec . I am using white sewer pipe so I can run the sweep 90's and dual 4" precision port flares top and bottom for a single 12 in a test box and keep changing my tuning,
I have a cheapo db meter on the dash while running all my tests. Here's where I need you guys because I'm stumped. So why when I make the ports longer (tuned lower) would my 30 to 35hz range numbers drop? also why when I shorten the ports (tuned higher) would 56-62hz range numbers drop? I also cant figure out why I'm so peaky I have some notes like 40hz almost always falls on its face. Tuned at 31.5 and 32 it dies but tuned at 31 it doesn't? (I'm talking a whole 8db) I also usually have a drop at 42Hz,43hz,and 52hz. I'm just lost as to why the numbers are so jumpy between tests. Why its a steady climb with drops and then back to a steady climb then drops etc. I start at 30hz and go to 62hz during these tests.
I honestly always thought the low range to a point would gain at lower tuning while sacrificing some higher notes and vice versa. Can someone tell me from experience in a test box with meter is this normal and how do you decide on a final tune? Is there an easy way to rid myself of the random peaks and drops? Every time I change the tune some numbers go up and some numbers go down but not consistently on either end as you would think. It seems random. I love the 30-40 range
Thank you in advance for taking time to read and respond. This place is the best. If anyone can set me straight it will be here.
I'm rebuilding my Punto for next year events. I bought it 5 years ago so let's start from there:
First system including Ultimate T2 12" subwoofer, Twister TW1000 "1000W" amplifier and Hertz low end 6,5" coaxials and JVC head unit.
Then there was Pioneer DEH-P5100UB head unit, better Hertz 6,5" coaxials with Focus Acoustics Formula FX-4150 amplifier, SPL Dynamics XTR-380D2S 15" subwoofer, Focus Acoustics Formula FX-1500D 1500W amplifier and Optima 55Ah battery.
In the next step I upgraded speakers to 6,5" Hertz Energy ESK163L.4 3-way component system, made bigger and better subwoofer box, added 20Ah BSB battery and some tuning parts.
Next I changed Kenwood KDC-BT92SD head unit, added another set of 6,5" Hertz Energy ESK163L.4 3-way component system speakers to rear, changed FX-4150 amplifier to SPL Dynamics ICE-150.4 and 15" XTR subwoofer to Focus Acoustics Black MK5 15D2 15".
Then I upgraded the whole system and started to work with the interior. New system:
Optima YELLOW TOP 55Ah and 38Ah batteries
Focus Acoustics FX-2500D 2500W amplifier
Focus Acoustics Black MK5 15D2 15" subwoofers x2
SPL Dynamics ICE-150.4 amplifiers x2
Hertz ESK163L.4 component speaker systems x2
SPL Dynamics SPL-HD25T Horn Loaded Compressor Tweeters x2
Match PP72W-D subwoofers as midbasses at front x4
To be continued in new post
By Krisztián Arnold
So recently I got myself a pair of Rockford Fosgate P3 D4 subs, and started to play with them a little.
However I can't quite see the numbers I was hoping for. I got to thinking what can cause this little anomaly. I am thinking maybe it is my battery, because everything else semms to be okay.
My setup consists of 2 RF P3D4 subs, a Hifonics Brurus BRX2016.1D, and an XS power D975. I choose theese things because it seems to fit together just fine to cover the 1000-1500 watt range, but apperently I was wrong somewhere.
All of this is currently out of a car, so maybe it is the problem. However, I have seen many videos where people get their equipment out form a car for a period of time, and they can reproduce almost the same power, and that is the reason I am worried a bit by now.
It also can be a tuning problem, because I only owe a multimeter ( whitch is a True RMS meter by the way) and a clamp, but I doubt is is the real reason.
Thank you for your answers in advance! I hope you can help me out! 🙂
Who's Online 11 Members, 0 Anonymous, 199 Guests (See full list)