Bazooka Tube 8" or Solobaric SL8 for bass

[jj4475 10+ year member]

thats a very small port

 

[Railrocker 10+ year member]

Is that the port on the front?

 

[Flyhalf 10+ year member]

Yeah, that's the port. I used 2" pvc. It's ~2.8" long to give the box a tuning of 45.5 hz. Since this was my first ported box, I tried to build to Kenwoods spec for the sub (1.0 cu/ft ported tuned to 45 hz) as a trial. I didn't know what to expect or how it was going to sound. I've always had sealed boxes in my trucks.

I could have used 3" pvc and made the port 6" long, but the 3" pvc looked to large for some reason while I was at Lowes.

Suggestions???

 

[lebomb 10+ year member]

Yeah, that's the port. I used 2" pvc. It's ~2.8" long to give the box a tuning of 45.5 hz. Since this was my first ported box, I tried to build to Kenwoods spec for the sub (1.0 cu/ft ported tuned to 45 hz) as a trial. I didn't know what to expect or how it was going to sound. I've always had sealed boxes in my trucks.
I could have used 3" pvc and made the port 6" long, but the 3" pvc looked to large for some reason while I was at Lowes.

Suggestions???

That is tuned high........you are losing tons of low end. Why didnt you just stay sealed??? The sub is right in your pocket almost.....it would have sounded great, and given you great low end. //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

 

[DejaWiz 5,000+ posts]

Looks like you did a nice job on the box.

I'm going to have to concur with the others, though. Tune that sucka lower and utilize that subs potential! //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[Flyhalf 10+ year member]

That is tuned high........you are losing tons of low end. Why didnt you just stay sealed??? The sub is right in your pocket almost.....it would have sounded great, and given you great low end. //content.invisioncic.com/y282845/emoticons/eyebrow.gif.fe2c18d8720fe8c7eaed347b21ea05a5.gif

Well, here's why...

I took that 2 sub box (sealed) that I had in my old truck and put it in my new one to see what it sounded like. I thought it would sound much better since there was more room. For some reason, it sounded like shit.

In my old truck, the subs were right up against the back seat and it souded good. So, that got me thinking about the Kenwood subs and that maybe they weren't that great (I knew that already, but they did sound really good in my old truck).

My thoughts were, for Shits-n=Giggles take a look at the Kenwood manual to see what they recommend for a sealed and ported enclosure since you have the sub already. That's what I did. I thought since I was going from 2 10"'s to 1 10" I wouldn't be happy. Thought maybe a ported enclosure would help that lonely 10" out a bit....well, it did. I think it sounds **** good. But it seems you guys think it could be better by lengthening the port a bit to tune it lower. That, I can easily try.

Do you relly think a sealed box would sound better than the 1 I built?

 

[Flyhalf 10+ year member]

Looks like you did a nice job on the box.
I'm going to have to concur with the others, though. Tune that sucka lower and utilize that subs potential! //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Thanks... I am going to tune it lower. I just wanted to get it in "as-is" last night to see how it fit/rode/sounded. Now that I know I like the size, I can play with the port length and sub choice.

I knew I wouldn't be able to make carpet look right, so, for the finish, I used a decorative textured spray paint. Don't know if you can see in the pics, but it looks like stone. Covered very well and actually looks good up close. It does a good job of hiding the imperfections also.

So, sub choices. If you could put a 10" in that box and had 400W to throw at it, what would it be. Keep in mind I will need to use the round port, but can change the lenght to suit. Budget would be

In your opinion, would a $175 sub be a large improvement over my $80-$90 Kenwood Typhoon?

 

[lebomb 10+ year member]

Well, here's why...
I took that 2 sub box (sealed) that I had in my old truck and put it in my new one to see what it sounded like. I thought it would sound much better since there was more room. For some reason, it sounded like shit.

In my old truck, the subs were right up against the back seat and it souded good. So, that got me thinking about the Kenwood subs and that maybe they weren't that great (I knew that already, but they did sound really good in my old truck).

My thoughts were, for Shits-n=Giggles take a look at the Kenwood manual to see what they recommend for a sealed and ported enclosure since you have the sub already. That's what I did. I thought since I was going from 2 10"'s to 1 10" I wouldn't be happy. Thought maybe a ported enclosure would help that lonely 10" out a bit....well, it did. I think it sounds **** good. But it seems you guys think it could be better by lengthening the port a bit to tune it lower. That, I can easily try.

Do you relly think a sealed box would sound better than the 1 I built?

I think sealed sounds better than ported period. But, that is a subjective thing. I think the sealed will go much, much lower.

 

[DejaWiz 5,000+ posts]

So, sub choices. If you could put a 10" in that box and had 400W to throw at it, what would it be. Keep in mind I will need to use the round port, but can change the lenght to suit. Budget would be

In your opinion, would a $175 sub be a large improvement over my $80-$90 Kenwood Typhoon?

http://sonicelectronix.com/item_5529.html

http://sonicelectronix.com/item_7098.html

http://sonicelectronix.com/item_4045.html

http://sonicelectronix.com/item_6926.html

http://sonicelectronix.com/item_3409.html

http://sonicelectronix.com/item_7491.html

http://sonicelectronix.com/item_4213.html

http://www.edesignaudio.com/edv2/product_info.php?cPath=90&products_id=341

http://www.ascendantaudio.com/assassin10specs.html

http://www.ascendantaudio.com/arsenal10specs.html

//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

 

[Flyhalf 10+ year member]

http://sonicelectronix.com/item_5529.html
http://sonicelectronix.com/item_7098.html

http://sonicelectronix.com/item_4045.html

http://sonicelectronix.com/item_6926.html

http://sonicelectronix.com/item_3409.html

http://sonicelectronix.com/item_7491.html

http://sonicelectronix.com/item_4213.html

http://www.edesignaudio.com/edv2/product_info.php?cPath=90&products_id=341

http://www.ascendantaudio.com/assassin10specs.html

http://www.ascendantaudio.com/arsenal10specs.html

//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

Sweet. //content.invisioncic.com/y282845/emoticons/yumyum.gif.0556df42231b304b9c995aefd13928a8.gif Looks like I've got plenty of choices. I'll update with a decision and overall impression after changing the Kenwood out and tuning to a lower frequency. Thanks,

 

[DejaWiz 5,000+ posts]

Sweet. //content.invisioncic.com/y282845/emoticons/yumyum.gif.0556df42231b304b9c995aefd13928a8.gif Looks like I've got plenty of choices. I'll update with a decision and overall impression after changing the Kenwood out and tuning to a lower frequency. Thanks,

All in all, I'd choose the Alpine Type R out of all those considering the box size. Hit up Alpine's web site and snag the manual (page 4). You'll likely have to enlarge that port a bit.... to about 3.5" for their recommended 11 sq-in port area.

 

[Flyhalf 10+ year member]

All in all, I'd choose the Alpine Type R out of all those considering the box size. Hit up Alpine's web site and snag the manual (page 4). You'll likely have to enlarge that port a bit.... to about 3.5" for their recommended 11 sq-in port area.

Based upon Alpines recommendations, I can't figure out what size round port I would need.

They are calling for 11 sq/inches x 22 inches long. By my calculations, that's .14005 cu/ft.

3" pvc would be the largest diameter that would fit the current box. Inside the box, I only have about 12 inches to work with. I know I could extend the port outside the box, but I like the current dimensions. How could I make this work...

 

[DejaWiz 5,000+ posts]

Based upon Alpines recommendations, I can't figure out what size round port I would need.
They are calling for 11 sq/inches x 22 inches long. By my calculations, that's .14005 cu/ft.

3" pvc would be the largest diameter that would fit the current box. Inside the box, I only have about 12 inches to work with. I know I could extend the port outside the box, but I like the current dimensions. How could I make this work...

A 90 degree bend in the port tube if you can snake it through the opening on the box might do the trick.

Here's the calculation:

Alpine calls for a port that is 11"h x 1"w x 22"d. This equals a volume of 242 ci (or 0.14005 cu-ft).

Square port area = 11 sq-in.

Round port area of 11 sq-in = roughly 3.75" diameter.

But you said that 3" would be the max, so we have to do the following:

3" port diameter.

Final volume is to be 242 ci.

1.) Pi * radius squared * height = 242 ci.

2.) 3.1416 * 1.5squared * x = 242 ci.

3.) 7.0686 * x = 242 ci.

242 / 7.0686 = roughly 34.25.

Your 3" diameter port needs to be roughly 34.25" long to fulfill the volume requirements as defined in the Apline Type-R subwoofer manual.

 

[DejaWiz 5,000+ posts]

Quick question... does that box measure 1 cu-ft before or after the sub and port displacement?

 

[Flyhalf 10+ year member]

Quick question... does that box measure 1 cu-ft before or after the sub and port displacement?

It is 1.00195 without port or sub.

Dimensions are 11x15x15. 3/4 MDF