Hdc318 lower notes?

[Lowflyin 10+ year member]

Before I bought this mofo. I read a lot on it and everyone and their dads second cousin said it " kills the lows" . Now I'm not sure if it's my box (5.5 @ 34hz) or what but anything below ~33 isn't too much. It honestly feels like my 2 Cvr 15s hit lower. So uh what can I doV

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[pro-rabbit 5,000+ posts]

You can build a new enclosure. 5.5 is far to small for that 18. Minimum I have ever used was 6ft3, but in honesty they like even larger then that.

 

[Lowflyin 10+ year member]

I had planned on 6 but went to keep it below the window line. Mast said he had used then in as small as 5.25 I believe and said it was good so I based it off that. Plus I have ~2500 watts to it

 

[pro-rabbit 5,000+ posts]

I had planned on 6 but went to keep it below the window line. Mast said he had used then in as small as 5.25 I believe and said it was good so I based it off that. Plus I have ~2500 watts to it

It is hard to base anything audio related off of other's builds.

AQ's love large enclosures. Sorry but no way around that what so ever.

 

[Dirtrider4eva 10+ year member]

may be ur vehicle, try move enclosure around, change sub to face up, etc.

maybe its not fully broken in?

 

[pro-rabbit 5,000+ posts]

broken in won't change it enough to notice in most cases.

Odds are it is the build/design and application issue.

 

[Dirtrider4eva 10+ year member]

well if its tuned to 34, should be hittin lows great. weird.

 

[pro-rabbit 5,000+ posts]

well if its tuned to 34, should be hittin lows great. weird.

Just because one he says that is where it is tuned does not mean it is actually accurate. two, if it is how the enclosure is actually design and built will affect the response curve. three, sub/port placement play a roll in the response curve as well. four, the enclosure is small and that affects the curve as well.

 

[sacsking916 5,000+ posts]

I had planned on 6 but went to keep it below the window line. Mast said he had used then in as small as 5.25 I believe and said it was good so I based it off that. Plus I have ~2500 watts to it

mast also has a clamshell //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif little different than a standard ported box

 

[xmakeafistx 10+ year member]

I have my 18 in a little more than 5.25 cubes and it hits lows just fine.. hits even the 25hz notes pretty **** hard. I bought the box with the sub though, so couldn't tell you what its tuned to. But there is a lot of variables as to why you can't get the lows that much. What kind of vehicle is it in?

 

[pro-rabbit 5,000+ posts]

I have my 18 in a little more than 5.25 cubes and it hits lows just fine.. hits even the 25hz notes pretty **** hard. I bought the box with the sub though, so couldn't tell you what its tuned to. But there is a lot of variables as to why you can't get the lows that much. What kind of vehicle is it in?

He has a blazer.

As for your application if you increase the volume of the enclosure and port area yet tune it correctly it will increase in output lol. I'm not saying that can not perform "ok" at best in smaller enclosure, but you are not getting the most out of your purchase at all do to that restriction.

 

[Lowflyin 10+ year member]

It is at 34hz. 34.5 to be exact. And has 90 sq inches of port. Have enough wood for another box so maybe I'll try around 6.5-7 cubic ft with 100+ port and see. Thanks

 

[galacticmonkey 5,000+ posts]

AQs are meh.

If you really want to try to get some lower notes, try for either a different sub that will do the job better, or build a different box. Id probably shoot for 7.5-8 cubes @ 25-28hz. Dont go huge on a port. You want a relatively small port if youre trying to play low. Id shoot for around 90in^ of port with a box that size.

 

[Lowflyin 10+ year member]

I'd love to tuned to 27 but didn't think the aq would like that

 

[Papermaker85 5,000+ posts]

no reason it's not getting low..

it should go down to 25hz

I've used the hdc15 in 3.5 tuned to 32 and the lowend was excellent..

check the sub sonic, move the box around..

how did you build the box?

you might try 6.5 tuned to 35 with 80in^2of port..

to much port area is a bad thing..