JTR Captivator - Page 53

It will rock with that amp. In my experience, this sub has the highest sensitivity to be found by a *LONG* shot among anything comparable or even anything more than twice the size, but bossobass knows of other drivers that I'm waiting info on.

I believe Ricci would handle this if someone could provide him a Cap. We also we have the luxury of not worrying about how he conducts his measurements or being able to trust his work.

I don't know about that, I haven't seen his birth certificate

These are a couple of things Jeff says on his forum:
When asked about the 15hz version of the Cap (like mine) "Was the 121db at 15hz spec using sine waves or CEA method and in room or ground plane?" Jeff answered "Outdoor, ground plane, logarithmic sine wave sweep."

Later in that thread, he goes on talk about the dual tuned Cap: "The port plug adds 4db at 15hz but takes away 4db at 20hz."

If we relate this to the following chart and you add 4db to the max output reading @20hz, you do come up with 127db.

It will put out far more output than any other sub you have had as of yet. It will make that PB13 that you used to love sound like a toy by comparison.

Will that be enough for you? If not, then you need a bigger amp.

Thanks mike, I knew i was recalling something of substance.

James

I'm curious, when will Bigbaddaboom visit the Submersive thread..........?

As soon as Seaton posts, hints, or speculates towards a figure he deems to be 1-3 dbs "off".

James

Seaton is smart not to saddle up in the CEA-2010 pissing match.

I have to jump in here, it's driving me nuts reading all this and not adding my 2 cents.

As those of you that have been following the thread for awhile Jeff stated that the driver (mine) in the shootout displayed some "rocking" (I assume this means the not so good sounds that we heard at the meet on the scenes from WOTW) and that he had them modified so that this no longer happens. He also told me that he will be replacing my driver with one of the new ones. He stated that my driver was made by the same manufacturer but it was the first of the next generation that has now become the one and only.

Last week I posted that the red clip light blinked during some testing, but since I now am using the sms-1 and a high pass filter of 20hz I haven't seen the red light blink even once.

Yesterday I took some measurements. I was only able to hit 108 db (radio shack meter, C weighting, slow response) from my listening position 13 feet away from the corner loaded sub in a 3100 cu foot sealed room (half a staircase with a closed door at the top). I also measured from 2 feet (why didn't I measure from a meter... I don't know..) and on the scene in Hot Fuzz where the house explodes the meter hit real close to 120db (remember, from 2 feet away) but there were some distorting sounds coming from the sub.

I've been told by another Captivator owner with the same amp that these numbers are a joke for the Cap and I should be getting way better spl than that. I mean I have hit 110 with my SVS before from the listening position... granted it did NOT sound clean. At spl levels where the Cap does not distort it gives me much more tactile feel and room pressurization than the SVS ever dreamed of doing and it does it effortlessly.

Anyway, Jeff sent an email to me today that said that my driver is the one and only and the new drivers will do what the first driver did and then some. I don't know if he meant it will do what my driver did and then some or if he meant it will do what the previous drivers did and then some. Hopefully the latter.

Now, before I measured I was (and continue to be) very impressed with how clean and effortless (like I already said) the bass sounds when I'm not pushing the sub really hard. The sound quality is excellent, I just want that combined with never having to hear any distortion sounds EVER. I think that's realistic in the size room I have.

If I were Jeff I would be screaming from the rooftops that the sub used in the shootout had something wrong with the driver but that is not his style. He has more class than I do.

I know my post has little to do with the recent discussion, but I've been getting PM's from people interested in the Captivator so I though this would be easier than sending everyone seperate responses.

I don't believe it ha. I think the pb13 beat the epik dynasty in ever way and that is a similar design.

Not saying it won't be better but that much better....?

I'm not saying that the SQ is necessarily all that much better. The PB13 is a great sub. I'm saying that the Cap will play louder. Much, much louder.

If it makes you feel better carp, it takes dual SVS PB13 Ultras (non co-located) to hit 107 dBs in my 6400 cu ft open basement.

I bought my second set of SVS PB13 Ultras from a buddy of mine in St Joesph. He too could only hit 107 dB in his 'large' open basement (co-located). I know, I measured them myself.

When I stacked his Ultras on top of mine (two in each front corner) I only gained 5 dB instead of the proverbial 6dB. What a kick in the pants.

You and Jon only think you guys have it bad.

that would be pretty bad azz if jeff took 2 of those and made a dual-opposed sealed sub

have you ever tried them in sealed mode and see if you get the full 6db ?

when i stack 2 sealed subs on top of 2 i get the full 6db gain

I believe that's a design Mark Seaton is exploring.

A dual opposed 18, with a big mondo 6kw Torpedo plate amp (in the works) from Speaker Power. That's merely conjecture on my part, but cool none the less

How about two 4kw Torpedoes per cabinet? Hell yeah! An 8kw dual opposed 18 from Seaton. distribute 4 as per Welti/DeVantier and be rockin a 32kw LF rig It's certainly not out of the question.

Back OT

Has anyone heard if Jeff is shipping this week? I hate to keep checking with him if someone already had made contact since last week. I know he had some drivers but wanted to do some testing on them.

As far as the discussion goes. I had a SVS PB12/Plus 2 and 2 working MWF-15's running at the same time in my 12x19x8 room.

Once I received my Cap and my EP4000. I ran that alone and the whole room and house rattled way more then with the other 3 running all at once.

Not too scientific but ....

Now I have (1) Cap and (1) Turbo and it is awesome.


Waiting on my 2nd Cap and my 2nd Turbo MFW-15.........Then I can finally put this sub nonsense to bed.

I emailed Jeff re subs this week and haven't heard back from him as of this AM. Mind you, I'm 7 minutes away from him so I'll be able to pick mine up as soon as it's completed.

I realize the "first batch" were going to be delayed for the driver modification, but I was hoping that wouldn't delay the second which he expected to arrive the 27th (this friday).

I'm at 2 months.

James

I ordered March 7th. FWIW.

^ vicious.

James

I see absolutely no problem with someone like BIGBADDA questioning specs. It's actually refreshing that someone just doesn't jump on the bang wagon and simple accepts specs what the manufacturer claims.

I don't think anyone has a problem with anyone questioning anything. Perhaps its the tone, tenacity, and veracity of the questioning that gets some folks perturbed.

For instance: until someone tests a Cap GP and finds otherwise, I do not find much reason to doubt the 127db @ 1 meter 20hz spec.

Why?

mojomike hit 126+ in his room with less than 1/5th of the rated peak output of the powered cap. That's less than 1/5, gang.

Now granted, this was indoors- on content, not a sine wave, but after adjusting for 5 times the power and dropping out room gain, it would appear (to me anyway) that the spec seems viable, at this point.

Spending a lot of time debating what's sure to be, at most, a few db's seems daft to me, but it's not my forum or time, so there you go.

James

There's been scathing remarks from both sides, and I can understand why. Just as with any thread devoted to a great product, the thread has many enthusiastic and dedicated contributors. On the other hand, there's people with understandable frustration with the history of hyped numbers by manufacturers plaguing the industry.

The problem is that instead of having the patience to get to the truth of the matter and recognizing that at this point either side could very well be right, both sides dug their heals in and got personal. I'm sure that when the truth is revealed, one side will claim victory and the personal attacks will continue, which is unfortunate because both were wrong in how they went about this. Just because someone hadn't seen something so incredible happen before doesn't mean it couldn't be, and just because something seems so incredible doesn't mean it must be either.

All I tried to do was make an estimation based upon what I know to be the only "reliable" measurement I've seen, thus far.

But I agee with your sentiments, on the whole. Sometimes we can all get a bit foolish.

James

I've been told by Jeff to expect tracking info in the next couple of days.

It's been a long wait, but I'm sure as soon I receive the speakers / subs the long wait will soon be forgotten

I'm looking forward to the reports when there are more Captvators out there in the wild.

If I remember correctly, Mike's Cap showed a 10dB drop from 60Hz to 20Hz in-room FR (similar to the un-EQd response JP posted, I believe 12dB down for 15Hz tune).

I believe a PB13 has built-in EQ for a flat response (-3dB at tune).

The Cap with this FR will show a strong advantage playing program material with significant 60Hz content, such as FOTP Mike used for that 126dB reading:



Here's the PB's 15Hz tune FR:



And Mike's Cap:



And Un-EQd FR from Jeff (see red line for 15Hz tune like Mike has):

True, true, and quite likely true.

With that in mind, my opinion (and I'm sure most don't care and disagree) is that a Cap with EP4000 is between 1-1.5 PB13Us, and the powered Cap somewhere between 2-2.5 PB13Us.

Still the best output and bang for your buck ported commercial sub out there that I know of; but not quite the end of the world, everyone else should stop trying, kneel before me sub that the official specs might lead one to believe.