two hdc3 18's on kx2500

[dbeez 5,000+ posts]

6-7 is where the hdc's liked when I played with them with a rather large port like 15 sure inches per cube.

 

[dbeez 5,000+ posts]

Now that's per 18subs up port side usually work best but ext. Cab trucks are not sealed up friendly metering vehicles.

 

[raptor727 10+ year member]

I see you are running nightshades now how big of a difference is there i plan on two nightshade 18's next with around 6k

 

[RAM_Designs 5,000+ posts]

In that quad cab(I have an '04), you also might be able to keep it under the window line with both subs in there.

 

[raptor727 10+ year member]

No it definitly gets a hell of alot louder with all windows down and rear window open as soon as you shut it up if gets quiet lol thats why i guessed around 148 only legal sealed

 

[raptor727 10+ year member]

LOL!!!!! I have both boxes 38" wide so they are both standing up right behind seats lol I wish it was under the window i did not take this into account when designing boxes haha next time though I'm going for what you mentioned

 

[dbeez 5,000+ posts]

You really need a common chamber box under window line subs up port side.

 

[raptor727 10+ year member]

ports to the side??? really never tried or heard of that but I suppose you would know having a truck almost identical to mine I'm gonna try that.