volvo 245 |Digital Designs| 4x18" | 161,07dB @Kick 158,5 @28Hz @headrest, 159,84 @windshield

[db_speakerbox]

Nice! Watched vid and thought no way that is 20hz. Its way lower than that and then realized it was in slow mo lol.

Listening impressions with new port?

[Mrop]

Everything started to flex like hell, but the "presence" of the bass is gone. It feels and sounds like a proper 4th order now, but the bass was more soft and deep without the port.
Hard to describe, but first thought after the port was up was that i want it gone..

It was more musical without the port, but i'm starting to digg the lowlows more tho.

But you cannot have anything when you're chasing your 160!

The box still plays from 25 up to 50'ish. And the pressure in the ported section has helped in better excursion handling. I am not afraid anymore to go full tilt 20Hz, when without the port it was a "NONO" under 25Hz...

I enjoy mostly at 28-36Hz -range, as it makes my windshield flex like hell!

BTW!!

I made some exterior changes:

Made custom headlamps with spare parts from my another 245 volvo

[Mrop]

Sorry for my languge, but shortly what i explain:
I am burping almost at full tilt a 15-80Hz sweep.

Sensor is at passangers headrest, drivers door is open (DEMO position)

[Karkov]

Lost track of this build, GREAT scores man, door panels look killer (lol?) truly custom man, wish I could get a demo with the dash speakers right in your face like that. 20 hertz video was dope. keep up the great work and gratz on 2 place at the show!!

[Mrop]

@Krakov thanks! means alot

New scores!! Tested my new port with DD M4a at .25ohms.

HYPED !!!! LESS THAN 1dB TO GO!!
(sure its from the kick, but still!!)

DD M4a at .25ohm

4x DD3518

Clamped 99,6A 73,5V
44Hz
Z = 0,74

W = 7320,6W

voltage dropped to 11,5V'ish

[db_speakerbox]

Congrats! I think if you could keep your voltage up a little higher you will be there! .25 is brutal tho, drawing some serious current. Love m4a amps, they are beast!

What is your current port?

[Mrop]

Congrats! I think if you could keep your voltage up a little higher you will be there! .25 is brutal tho, drawing some serious current. Love m4a amps, they are beast!

What is your current port?

Thanks!!!

My port now is:

2100cm2 ~17 litres

My Impedance when drivers door is open

I measured this sweep from the kick when drivers door was open. (peaks at 44-47)

[fecupe2001]

very nice man!!! how big is the port now? asking cause you said "new port" but looks almost the same than your last pic lol

[Mrop]

very nice man!!! how big is the port now? asking cause you said "new port" but looks almost the same than your last pic lol

yeah it is the same port, just rounded up the edges.

I am lazy builder, sorry

flex test video with 24Hz

[fecupe2001]

My god haha, that poor car wants to explode, very nice!