Would this Sundown 15" be a good buy?

[Cclodbuster2017]

I am considering this subwoofer by Sundown: https://sundownaudio.com/lv/sa/subwoofers/u-series/

It says 3.0ft3 for the box. Tuned at 35hz. Could I go 3.25ft3 and tune at 33hz. On woofersetc website they say it has 30mm xmax. Do you think thats true?

https://www.woofersetc.com/c-23-sub...-15-d2-15-1500w-rms-dual-2-ohm-subwoofer.html

Click to read more...

 

[Popwarhomie 5,000+ posts]

 

[Cclodbuster2017]

Why would you post this?

 

[Popwarhomie 5,000+ posts]

You are all over the place. You went from a Korean board 1200 and an HDC3 12 to wanting two high excursion 1500rms 12s to a single U 15" in 3 cubes on a 1200 watt Chinese board amp?

Not really understanding what exactly you are looking for.

What were you not happy with out of your HDC3 12 and Q1200? Low end? The U is a fantastic subwoofer but not exactly a "low end" driver.

If you want a 15" that is decent in smaller boxes, cheap, and pairs up well with a 1200 watt amp look at the Dayton MX, Dayton HO, or Dayton UM subwoofers.

 

[Slo_Ride 5,000+ posts]

I'm not clicking the links. What do you mean is it a good buy? Also you have to post what amp you are using for honest box recommendations.

 

[Slo_Ride 5,000+ posts]

View attachment 30859

Never gets old!

 

[Cclodbuster2017]

I want something louder than the SQ 12". Why are SQ subs good but their amps aren't any good.?

 

[Cclodbuster2017]

Also Popwarhomie: The website at sundown says it the U 15" goes in a 3ft3 enclosure tuned at 35hz. Go to the link here and see for yourself:

U SERIES – Sundown Audio

sundownaudio.com

And I am using a SoundQubed 1250 watt amp the S1-1250. Whats wrong with that amp? What amp do you recommend for either the SI SQL 15" or the Sundown U 15"

 

[Cclodbuster2017]

Would this amp be junk for the Sundown U 15"

sundown-audio-sfb-1500d-monoblock-1500w-rms-class-d-amplifier- fullrange- full-range

<h1><span style="font-size: medium;"><img src="{{media url="wysiwyg/SUNDOWN_AUDIO_-_AUTHORIZED_with_Warranty_new_.png"}}" alt="" /></span></h1> <h1><span style="font-size: medium;">Sundown Audio SFB-1500D Monoblock 1500W RMS Car Amplifier</span></h1

www.woofersetc.com

 

[hispls 5,000+ posts]

I want something louder than the SQ 12". Why are SQ subs good but their amps aren't any good.?

Pics of your current box as it sits in the vehicle?

Who told you the Soundqubed amps aren't good?

 

[Popwarhomie 5,000+ posts]

I want something louder than the SQ 12". Why are SQ subs good but their amps aren't any good.?

Never said they weren't. Just wondering why you would go from a Q-1200 to an S-1250. Doesn't make sense. The Q line is Korean and they are fantastic amps. I have had 7 of their Korean amps.

 

[Clifff150 10+ year member]

I would get the SI SQL of those options. I would have kept the Q 1200 as well.

 

[Cclodbuster2017]

Dang it I didn't know there was a difference between S and Q amps. Should I go with this one?

https://www.woofersetc.com/c-3-ampl...s-class-d-amplifier-fullrange-full-range.html

Is that too much power for the SI 15"? The amp is 1500watts RMS and the sub handles 1000watts RMS.

 

[Cclodbuster2017]

I think I will go with this one if you guys say its good...

https://www.woofersetc.com/c-3-ampl...s-class-d-amplifier-fullrange-full-range.html

At 14.4 volts this amp actually pumps out 1400watts RMS plus. Not 1000watts RMS that its rated.

 

[Cclodbuster2017]

I dont want too much power so I don't have to get a second battery or alternator or something.

 

[Popwarhomie 5,000+ posts]

I think I will go with this one if you guys say its good...

https://www.woofersetc.com/c-3-ampl...s-class-d-amplifier-fullrange-full-range.html

At 14.4 volts this amp actually pumps out 1400watts RMS plus. Not 1000watts RMS that its rated.

Thing is they do that power on a dyno. You will never see 1400 watts on music.

Your goal is to be louder than your previous HDC3 12 and Q1200 but without having to upgrade any electrical. I think your best bet would be a single 15" on an amp around 1200 watts. 1200 ish watts is what most people can get away with on stock electrical. I think a proper custom box is what is going to be your biggest factor in your new build. You know the saying "space makes bass". If you are limited to 3.25 cubes max I would look back into a 12" subwoofer.

 

[Firewalker]

ICON 15" 1250W Subwoofer by SSA®

Shop ICON 15" 1250W Subwoofer by SSA® at the Guaranteed lowest allowed price of 409.99 with 20+ yrs of the best customer service, only at the SSA STORE

store.soundsolutionsaudio.com

I would go with something like this. The Icon is known to hit. But with only 3.25 cubes max that is going to be iffy on a 15" like Pop said I would go with the 12" version of something as well.

 

[Cclodbuster2017]

I can get 3.65ft3 out of my box I am making. I will be making a build thread about my new subwoofer box build. Its going to be with sonotube which is a round cement form. Round is so much stronger than a square or rectangle. This 16" in diameter sonotube holds like 400 pounds of cement in it cut at 36" tall. So what could some air possibly do to it? I made one recently in my home theater and it slams! So watch for my build coming soon.

 

[hispls 5,000+ posts]

This 16" in diameter sonotube holds like 400 pounds of cement in it cut at 36" tall. So what could some air possibly do to it?

400 pounds of cement in what 4-6 feet of that tube = fuckall for PSI.

Even a rather modest 140dB SPL is 200PSI. I'd be prepared to reinforce that with fiberglass depending on the results of testing once you get this built.

dB Calculator

Use our dB calculator to find the sound pressure level and intensity level in decibels.

www.omnicalculator.com

 

[Cclodbuster2017]

Well there are guys on the home theater forum that uses them with 18"s and they all swear by them.