lack of bass

[TIGERFOR2 10+ year member]

A friend of mine just put a Boston Competitor 10" in his truck. He's running a JL 500/1 to it. The Boston in a 12" x 12"x 12" box. Its rated at 800 rms. The amp 500give or take. When he turns the volume up with the windows down. The sub sounds like its bottoming out. When the window are up it hits way harder and no signs of bottoming out. What can the problem be and how can we fix it? WHen its ran off a punch 100 its fine.

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[jco1385 5,000+ posts]

how did you set the gains?

 

[TIGERFOR2 10+ year member]

I dont really know how he did the gains. Can the gains not being set right affect the way a sub plays with the windows up or down? I told him to turn off the bass boost but he doesnt listen. But 500 watts going to a 800 rms sub? what do you think he should have the gains set to. Its a ford expo', jl 500/1, boston competitor 10, sealed box.

 

[JayRich 10+ year member]

it really depends on how many volts the pre outs are given from the headunit.

 

[TIGERFOR2 10+ year member]

This head unit but a year or two older.

LCD Display Features:

* Fully Motorized 7'LCD Screen

* Touch Screen Control of all Functions

* Fully Interactive DVD Menu's on Touch Screen

* 336,950 pixel display

* NTSC/PAL Compatible

DVD Player Features:

* DVD Mechanism plays: DVD Video, CD Audio, VCD, MP3, and WMA

* SD Card Reader

* Plays MPEG 1,2 MPEG4 Video files, Including avi and Xvid

* Built-in Dolby Digital Surround Sound Decoder

* Plays DVD Audio discs

* Displays JPEG picture files

* Plays MP3 and WMA Files Burned on DVD +/-R Discs

* Last Position Memory on DVD Play Back

* Multi-Zone Function

AV Receiver Features:

* Built-in AM/FM Tuner with 36FM/12AM Presets

* 2.5 Volt 6-Channel RCA Line Level Output (Front, Rear, Center,

Subwoofer)

* 1-1A/V Input

* 2-Rear Video Outputs

* 1-Rear Vision Camera Input

* Fixed 2 Channel Audio Output for Rear Zone

* 4x35 Watts

* Independent gain adjustments for Tuner, DVD/CD, AUX and SD Card

* Quasi Parametric Bass and Treble Tone Controls

* High/Low Pass Electronic Crossovers

* 24 Bit DAC's