Super deep bass - Experts, name that subwoofer

[craigsub]

Guys - I am getting a little weary of the claim about how our subwoofers cannot do deep enough. Here are three subwoofers, all using T/S parameters in Win ISD. All are multi-driver / multi-box units.

The question is ... Whose subwoofer is represented by each color line? How many of each driver is needed, How much power is needed, and what is the total cost?

[jholzbauer]

Don't tease us... tell us!!

[_Avarice_]

Well, I see the project is called VS18 in WinISD, so I'm going to assume that one of those lines represents a pair of VS18s powered by single SA1000 :angel:

[craigsub]

Well, I see the project is called VS18 in WinISD, so I'm going to assume that one of those lines represents a pair of VS18s powered by single SA1000 :angel:

Great - Now some genius is gonna run to AVS and say I claimed that a pair of VS-18.1's will do 100 dB at 5 Hz. :peeping:

But no - no vented subwoofers are in this graph.

There are three subwoofers. I just got off the phone with a well known forum member and reviewed all three with him.

He thought it was pretty interesting.

[craigsub]

Don't tease us... tell us!!

No. :biglaugh:

[Mktheater]

I know what they are, It is going to be my rolloff without room gain once I get the subs mated to my FP10000Q!!

[sbdman]

Gotta guess with 124db at 20Hz, it would take 4 SS18.2s each with a Dayton to get that spl. I'd bet there's 2 LMS 5400s, but with lots more than 1000w pushing those guys. 2000-4000w I'd think apiece. Perfectly follows 12db/octave sealed design, with the properly sized enclosers.


But, that's outside, so could easily be guessing 1/2 above if we put them in corners.

[hawkeyejw]

One of the lines represents 100 velo micro vees, for sure. :cool:

[HuskerOmaha]

Gotta guess with 124db at 20Hz, it would take 4 SS18.2s each with a Dayton to get that spl. I'd bet there's 2 LMS 5400s, but with lots more than 1000w pushing those guys. 2000-4000w I'd think apiece. Perfectly follows 12db/octave sealed design, with the properly sized enclosers.


But, that's outside, so could easily be guessing 1/2 above if we put them in corners.

Great - Now some genius is gonna run to AVS and say I claimed that a pair of VS-18.1's will do 100 dB at 5 Hz. :peeping:

But no - no vented subwoofers are in this graph.

There are three subwoofers. I just got off the phone with a well known forum member and reviewed all three with him.

He thought it was pretty interesting.

Am I well known? Was this conversation last week? ;)

That is an interesting graph. Im going to pose another question in my DIY thread on avs and see what happens...it might get interesting.

I'll agree-I bet that is exactly what sbdman is saying!

I suppose after enough displacement, they all sound the same. So then what do you do next, look at distortion profiles, linearity? Where does it stop? What do you...hear?

[mojave]

Just for comparison, I modeled my 8 Acoustic Elegance IB15 drivers with a total of only 400 watts. Drivers and amp cost me $1500 and it will cost about $150 for the manifolds.

[sbdman]

There is still a question as to whether the Dayton is flat below 20 Hz, or how much off. But, between room gain, placement, calibrated mic and my non-expert ears, this is theoretical territory.
Maybe I should get a twin, too? Would sure be more fun!

Guessing the third driver to be a Mal-X?

[tesseract]

The SA1000 is 4 dB down at 10 Hz with Bass Boost on, 5 dB down without boost, according to the instruction manual. :yes:

[HuskerOmaha]

There is still a question as to whether the Dayton is flat below 20 Hz, or how much off. But, between room gain, placement, calibrated mic and my non-expert ears, this is theoretical territory.
Maybe I should get a twin, too? Would sure be more fun!

Guessing the third driver to be a Mal-X?

Or the Pi 18"?

[sbdman]

If you can believe the stated response. I was talking about 3rd party testing, which hasn't been done on this Dayton. I think DD and others have stated there is some hype to manufacturers like the Behringer at least to advertising peak power, and not average power.

[tesseract]

If you can believe the stated response. I was talking about 3rd party testing, which hasn't been done on this Dayton. I think DD and others have stated there is some hype to manufacturers like the Behringer at least to advertising peak power, and not average power.

The Dayton SA1000 uses a patented tracking down-converter power supply. Who developed this technology? Bob Carver.

Behringer likes to take (steal?) other manufacturers technology and produce in China with lesser quality parts. Many people are enamored by the Berry EP4000's power, but Craig tried it and said it lacked the sound quality of the SA1000. Folks should remember that Craig is an insane audio enthusiast that has heard a lot of gear in a lot of situations. I haven't heard the Berry myself, but I'll defer to his opinion on this.

I have heard the SA1000, I agree that it is a very good sub amp. Other manufacturers are using it as well, like Seaton and AudioKinesis.