CLIO measurements of my 2 IB subs

[ThomasW]

As usual the page contains many graphic files. So have patience if you're using a land line....

http://home.att.net/~tom1/page4.html

theAudioWorx
Klone-Audio

[Pat]

Wow Tom, those are impressive!
You don't get much better than that.
Too bad CLIO doesn't go below 20hz, it would be interesting to see how far down that flat response goes.




Pat's Page

[ThomasW]

Pat

Jon didn't have enough space to pack the B&K mic and Hewlett/Packard preamp. As a result we were limited in what we could test. I know that with minimal EQ the larger IB can go flat to 10Hz.

CLIO itself is limited to 20Hz. So we'd need to use the B&K mic then make individual frequency measurements just using sine waves to verify the absolute low end output.

It's unfortunate your visit was a week early, the testing was quite interesting, but exhausting.




theAudioWorx
Klone-Audio

[Pat]

Yea, testing does get kind of monotonous.
Thought about you guys when we stopped in Castle Rock on the way home last Friday.
Would have been great if I could have helped out with some of the testing. I don't think my wife would have had any fun though




Pat's Page

[JonMarsh]

Note,

The 1/3 octave CLIO measurements are "only" to 20 Hz, but the swept sine measurements (more revealing and more difficult to look good on) are from 10 Hz to 200Hz. Note that the big IB system with very light EQ is down 3 dB at 12 Hz. This is still pretty much "state of the art" compared to anything you can buy or build, and it does it with out transient obscuring PR's or other tricks.

It's fun to crank up Kenny Loggin's on SACD and get both the full weight and clarity of the entire bass region on some of the newer cuts. We also experimented with the crossover points, moving down to 75Hz with good results.

My next assignment in the bass department is to hook up an HE-15 to a generator for a couple of weeks and see if it breaks in to something close to it's rated Far. Mulling over some possiblities for it with a sealed box operating near a Q of 0.5 with a Marchand Bassis, or a largish ported enclosure working more like my X-1's or the Aerial Acoustics SW12. Just looking for a better way to take advantage of it's long cone excursion and high power handling than the 3 PR system- which is a rather odd critter in my estimation.


Regards to all and a happy weekend,

Jon




Earth First!
_______________________________
We'll screw up the other planets later....

[TerryC]

John/Thomas

How did the HE-15 measure out?

[ThomasW]

Hi Terry welcome to HT-Guide

Please read Jon's post again.

We're working an a dedicated webpage that will contain a lot of hard data. When Jon's box design for the HE15 is built and tested, the info will be made available.




theAudioWorx
Klone-Audio

[James W. Johnson]

Thomas how do I read the graphs for SPL output?.. I don't really know what DBV is.
Certainly you must be getting at least 130db@16Hz
with your IB subs so you must have some really loud speakers to go with them.....what do you have?

[ThomasW]

Hi James I was wondering when you'd find us

The CLIO measurement is in decibels. Note it's not targeting a max output.

Here's a photo of the left main, 93" tall, 32" wide, 4" deep. A technical description is in my profile



The 12 Shiva IB plays loud enough to crack plaster, knock stuff off shelves and resonate the entire 2500sq ft brick house with a 1500 sq ft basement. It's physically impossible to measure the max output without literally damaging the building, and probably blowing out the 55sq ft picture window in the HT :B




theAudioWorx
Klone-Audio

[James W. Johnson]

Gosh after seing what you have Thomas I really feel inadequate..........BUT BE FORWARNED , SHORTLY I TOO WILL HAVE SOME MASSIVE SPLS
I have been searching like mad looking for a super high SPL speaker to build , its too bad that their is not much to choose from. If I had the space I would love to have one of these systems, its capable of producing 140dBs from 34Hz on up from one meter....
JBL HLA Series 4895 and 4897A

[ThomasW]

James,

It's not a competition, it's a hobby.....

I built those 12 years ago, they aren't high output speakers, no electrostatic is. But they have extremely low distortion as a result of the number of square feet of radiating area. So the sound is very very clean.

High end pro drivers offer extremely high output combined with great clarity. But they need a monsterously large room to do them justice. That makes them of limited use for the average HT user, unless that user is entertaining a few thousand close friends in an auditorium.

I had a friend in college with a real Altec Lansing "Voice of the Theater" system in his living room. They were similar to the speakers below but the bass bins were twice as large containing 2-15"s/side. They played so loud that the best listening position was literally the sidewalk on the opposite side of the street. :B






theAudioWorx
Klone-Audio

[TerryC]

Hi guys glad to be here Thomas, I consider you the top speaker builder on the net that I'm familiar with.

I was under the assumption that you built a HE-15 yourself? From Jon's post he only mentioned that the three PR's are strange nothing else.

Just wondering as I've been debating on buying one but wanted to hear from some experienced sub owners before I jumped in.

Thanks
Terry

[ThomasW]

Terry

Thanks for the compliment

Yes I built one of the cube subs. It excels in the following areas; plays very loud, and handles extreme amounts of power for a relatively small but heavy enclosure. If these are the primary performance parameters you need/want in a sub then it should be given some consideration.

You might also consider carefully rereading the last paragraph of Jon's post....

Also please understand, Stryke is a partial sponser of this forum.

You may email me for further information
KloneAudio@worldnet.att.net




theAudioWorx
Klone-Audio

[JonMarsh]

Hello Terry,

The Stryke HE-15 is a very interesting driver; the question simply comes down to how to make the best use of it's prodigous power handling and extremely long cone excursion. Different values or desired results will result in different designs, with different trade-offs regarding the end results.

I'm very impressed with the overall construction of this driver, which is why I'm designing a new enclosure for it. Tom even coined the name for the project which I'm in the midst of developing; in deference to his creativity, I think I should let him be the one to disclose that, probably at the same time that we have actually built the first evaluation enclosure and have some test results. In the meantime, stay loose and stay tuned.

Regards,

Jon




Earth First!
_______________________________
We'll screw up the other planets later....