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Discussion Starter · #1 ·
I have a 15" Dayton HO that I want to make a enclosure for that will double as a table. Primarily for movies but this is a secondary sub and I'm not comfortable making a ported enclosure unless I can use a round port. But then I'm still worried I don't know how big it should be.

Anyway to get the dimension I want, it would turn out 27" H x 22" W x 22" L. This comes out to 6ish cubes. My understanding is this sub likes 3-4 sealed and 6 ported.

What downsides are there with running it so large sealed? Or can I do a easily ported design? My idea is to go downward firing since its a table but will that be worse than side firing? Could the port fire down if I did a port?

This is my first go around with something like this so I just need some helps. If the 6 cube is ok I have no trouble but if it should be ported since its so large I don't now how to calculate the port length and circumference. I suppose I could do it the size I want and seal off the right amount inside the box. I think I like the way sealed sounds more. My other sub is a 12" ported to 24hz. (Klipsch)

If you can't tell I clearly need helps. Or if anyone is in the dallas Fort Worth area and builds boxes I'd pay.
 

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Why do you say it will be a secondary sub?

Build something about 4.5 - 6 cubic feet tuned to about 20hz with 500watt amp and you wont know yourself.

I doubt the klipsch would be giving you much below 28-30hz.

If you plan on trying to use both subs you will need some measuring gear.
 

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A pair of 4" x 23" ports will tune that box to right about 21hz. The good thing about a ported build is you can always plug the ports if you're not happy, and being down firing no one would see the ports, open or plugged (yes you can down fire the ports, they just need 4" of clearance to the ground).


Here's your 2 considerations shown with a 500 watt plate amp



I would definitely start out ported.
 

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Discussion Starter · #4 ·
The primary reason I dislike ports is the air noise. Maybe that is the poor deosign of the other sub tho.

So given 4" "legs" on the bottom I will be around 5-6 cubes. Let me ask. I the event the port was sealed up. Would the large enclosure be an issue sealed?

Unfortunately I am stuck with 150w from a Adcom amp at the moment. The reason I considered this a secondary sub is because I didn't have the intention to budget a new amp etc to make it super awesome. Maybe that will change. . Do people make a separate chamber for the amps? Or Does the amp just sit in the air chamber?

Those are two 4" round ports? I suppose that's as easy as anything to make. No other issues with a large sealed box than the fact it doesn't go as low as Ported? Just want to make sure the less power I'm working with wont cause issues in a large box.

As for multiple subs I have rew equip in the mail. . I am already using the sub in a 1.5 sealed box the guy I bought it from had it In. I just knew from research the thing was capable of so much more. (If you can't tell I'm talking myself into a new amp). I could probably do the 300w bash. I'll consider that some more.


Edit. The 300w bash is 119 on amazon?? I'm going to go ahead and order that unless someone says they suck. Would 500w be worth the 80bucks more?
 

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Quote:
Originally Posted by shaneb0422  /t/1471348/dayton-rss390ho#post_23281578


The primary reason I dislike ports is the air noise. Maybe that is the poor deosign of the other sub tho.

For sure the subs you've heard were not well designed. A well designed ported sub has very minimal port noise.
 

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Discussion Starter · #6 ·
Alright. I've decided after much consideration. I can either go with an inuke1000 which will give me 1000 watts and the ability to add another sub later and make it 300wx2. Or I can go with a single bash 500.

I really like the idea of having a separate amp for convenience and expansion but I also like the idea of built in amp and how clean that is. (Though since this will be a table, Maybe having a separate amp is nice, though then I'm stuck with terminal cups.

I don't know. I'm tempted to go with a 300 bash since their so cheap.

And the inuke connections confuse me.
 

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Quote:
Originally Posted by shaneb0422  /t/1471348/dayton-rss390ho#post_23281651


Alright. I've decided after much consideration. I can either go with an inuke1000 which will give me 1000 watts and the ability to add another sub later and make it 300wx2. Or I can go with a single bash 500.

I really like the idea of having a separate amp for convenience and expansion but I also like the idea of built in amp and how clean that is. (Though since this will be a table, Maybe having a separate amp is nice, though then I'm stuck with terminal cups.

I don't know. I'm tempted to go with a 300 bash since their so cheap.

And the inuke connections confuse me.

Those are behringers peak figures.

 

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Quote:
I can either go with an inuke1000 which will give me 1000 watts and the ability to add another sub later and make it 300wx2.

HO 15 can handle a lot more than a paltry 300 watts. 2 HO 15s in 4.5-5.5 cu ft net boxes tuned to 20-21Hz with an iNuke 3000 DSP running one cab on each channel (600+ watts @4ohms stereo) will drop your jaw for many years to come.
Quote:
And the inuke connections confuse me.

Don't worry about connectivity stuff. You are in good hands on this forum.
 

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I would either step up to the iNuke3000dsp or go with a Behringer EP-4000 to power that HO15. You have obviously never heard a good ported sub. This would be a great way to add some good impact to your theater! What is your current, primary, sub? What receiver are you running?
 

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Discussion Starter · #10 ·
I currently have a onkyo nr709 (multi eq xt and I have ordered stuff to use REW to see if I need to do that rather than audyssey) and Atlantic tech 350thx speakers

The Dayton in crappy sealed and a klipsch rw12d for subs.


Peak outputs? Wow. In all the googling I did I never saw rms wattage ratings.

The 3000 turns this from a fun project on a budget to spending some cash. How about the bash 500? Would that be happy happy? I have some gift cards enough for the bash 500 which is why I asked. And I nearly ordered the inuke 1k last night until I read I would have to do a fan mod to make it silent and order a bunch of cable converters. Started getting silly. I guess I could do the inuke 1k bridged mode if I used it.

What's the inuke 3k rated at rms? I can be patient and wait for a used one to come up if you think it is hugely necessary or can just grab a bash 500 and make it simple.

I did some playing in winisd last night looks like with my 5.5 cubes ill need a 20hz port and there will be a peak around 22? What program were you using Jay1?
 

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Not anymore. There's an ebay one for $325, but the cheapest new one from a real store looks like $350. I just went and got a used EP2500 from Guitar Center for $200 instead.
 

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I did some looking at specs...the inuke 1k bridged or the bash 500 is likely where I am at - gift card wise thats what I can do. Considering the inuke will be 100 bucks more to get the DSP then the Bash is looking real good plus no silly interconnects and fan mod.

Am i really at a loss by going with the bash, like it wouldn't be worth building?
 

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Quote:
Originally Posted by sburnett  /t/1471348/dayton-rss390ho#post_23288691


I did some looking at specs...the inuke 1k bridged or the bash 500 is likely where I am at - gift card wise thats what I can do. Considering the inuke will be 100 bucks more to get the DSP then the Bash is looking real good plus no silly interconnects and fan mod.

Am i really at a loss by going with the bash, like it wouldn't be worth building?

The bash will do just fine. Of course it will still be worth it... Look at what a 500 watt 20hz ported 15" costs

http://www.powersoundaudio.com/products/xv15


And that thing is under ported, with only a single 4" port...
 
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