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JTR Captivator - Page 8

post #211 of 4725
Quote:
Originally Posted by RMK! View Post

I am running dual Captivators with the CC-4000 and have no issues.



You could easily run both Captivators off of one EP-4000. If you run two and bridge the channels, thats 4000 watts into 4 Ohms each. That ottadoer.

Now get a couple of speakon cables off of ebay and your done.

Well I just figured the ep4000 can actually put out something like 1500w. The ep2500 failed to the sinewave test in bridged 4ohms but they were able to FORCE 1900w out of it only at 1000hz and only for a few seconds which took several fuses just to do. The ep4000 is a direct clone but got spec'd out at 1% thd when the 2500 was done at .1%.

They are tested at 650w per channel at 4ohms, is that enough?

Also wondering on the speakon, there are several different models ranging from 2 posts all the way up to 8, I'd assume that one is 2 since it says 14g x 2.

I will look and see if they have anything longer but I thought for low frequencies you needed larger gauges?
Edit: I see longer ones and 12g

Do I need male to female? male to male? Would banana to speakon work or are the double banana's too fixed to work with many amps?

Wow the male/female thing and the whole speakon thing is a mess to me
post #212 of 4725
My cap came with the huge binding posts. What is the reason for speakon over binding posts?
post #213 of 4725
Quote:
Originally Posted by pinktri View Post

My cap came with the huge binding posts. What is the reason for speakon over binding posts?

I could be VERY wrong on this, but I think it's because of the "ease of use" and "idiot proofness" of Speakon's over binding posts in the professional audio arena.

Someone please correct me if I'm wrong.
post #214 of 4725
Quote:
Originally Posted by sb1 View Post

I could be VERY wrong on this, but I think it's because of the "ease of use" and "idiot proofness" of Speakon's over binding posts in the professional audio arena.

Someone please correct me if I'm wrong.

They are far more idiot prone if you ask me
post #215 of 4725
speakon connectors are made for "live" events where there is a high probability for cable mismanagement.....someone tripping on a cable an accidentally pulling it out of the speaker terminal. Thats why speakons lock the way they do.
post #216 of 4725
Thread Starter 
Quote:
Originally Posted by goonstopher View Post

Well I just figured the ep4000 can actually put out something like 1500w. The ep2500 failed to the sinewave test in bridged 4ohms but they were able to FORCE 1900w out of it only at 1000hz and only for a few seconds which took several fuses just to do. The ep4000 is a direct clone but got spec'd out at 1% thd when the 2500 was done at .1%.

They are tested at 650w per channel at 4ohms, is that enough?

Also wondering on the speakon, there are several different models ranging from 2 posts all the way up to 8, I'd assume that one is 2 since it says 14g x 2.

I will look and see if they have anything longer but I thought for low frequencies you needed larger gauges?
Edit: I see longer ones and 12g

Do I need male to female? male to male? Would banana to speakon work or are the double banana's too fixed to work with many amps?

Wow the male/female thing and the whole speakon thing is a mess to me

You are over thinking this. That is plenty of power and if the run is <25', don't worrry about wire gauge. You need a male to female (that is what I linked) at the appropriate length. Run the EP4000's in bridged mode with one speakon from the bridged channel (usually Ch 1). The amp end is female and the Cap end is male. You could also use bananas if you have Jeff install those but why when speakons are so easy, cheap, durable and reliable.
post #217 of 4725
Thread Starter 
Quote:
Originally Posted by msvara View Post

RMK looks great. Are those brown panels sound deadening? Did you build them yourself or buy them?

Cheers,
M

Thanks,

They are (242 & 244) broad band absorption panels from GIK Acoustics. Their quality and price made DIY an unnecessary chore (IMO).
post #218 of 4725
Quote:
Originally Posted by RMK! View Post

You are over thinking this. That is plenty of power and if the run is <25', don't worrry about wire gauge. You need a male to female (that is what I linked) at the appropriate length. Run the EP4000's in bridged mode with one speakon from the bridged channel (usually Ch 1). The amp end is female and the Cap end is male. You could also use bananas if you have Jeff install those but why when speakons are so easy, cheap, durable and reliable.

I over think... Its what I do
I looked and I think a 25' and a 10' would be perfect. Have been looking at 12g. Still deciding on if going with the cheap generics is ok.


Continuing that trend... Any chance 650w is enough for the caps?

I have one EP now and the second would be another $300
post #219 of 4725
Thread Starter 
Quote:
Originally Posted by goonstopher View Post

I over think... Its what I do
I looked and I think a 25' and a 10' would be perfect. Have been looking at 12g. Still deciding on if going with the cheap generics is ok.


Continuing that trend... Any chance 650w is enough for the caps?

I have one EP now and the second would be another $300

More power is always a good thing but a single should be fine. For me, one advantage to dual amps is that my Integra 80.1 Pre/Pro has dual discreet sub outs. My sub pairs are on oposite sides of the room so this allows me to run Audyssey room correction and set the distance and levels for the sub pairs individually.

If your captivators are not co-located, dual amps would allow you to take advantage of your AS-EQ1’s ability to do the same (but using one LFE input and two outputs).
post #220 of 4725
as-eq1 does not set discrete distances if your pre/pro does not have that feature like mine doesn't. Also I could use it in that mode with a single amp, no?

The sides are still separate. Anyway its a moot point.

If it matters, I run it in 1 in 2 out not dual discrete. thats how svs and audyssey suggest. I like to run around reference level or above +/- 3dB.

The caps get 116 with 1000w according to jeff and 119 if in no-collocated duals with double power. i guess maybe room gain could make up for the loss in power.
post #221 of 4725
Thread Starter 
Quote:
Originally Posted by goonstopher View Post

as-eq1 does not set discrete distances if your pre/pro does not have that feature like mine doesn't. Also I could use it in that mode with a single amp, no?

The sides are still separate. Anyway its a moot point.

If it matters, I run it in 1 in 2 out not dual discrete. thats how svs and audyssey suggest. I like to run around reference level or above +/- 3dB.

The caps get 116 with 1000w according to jeff and 119 if in no-collocated duals with double power. i guess maybe room gain could make up for the loss in power.

You're right, the level distance settings reside in the Pre/Pro or AVR so you really need to upgrade your SSP .

You could always start with the single amp and if you feel the need for more power/spl, get the second ... and don't forget to upgrade the SSP .
post #222 of 4725
Quote:
Originally Posted by RMK! View Post

You're right, the level distance settings reside in the Pre/Pro or AVR so you really need to upgrade your SSP .

You could always start with the single amp and if you feel the need for more power/spl, get the second ... and don't forget to upgrade the SSP .

That ain't happening... just being honest. Isn't anywhere close to being in the budget. Maybe one day the onkyo 1007.
post #223 of 4725
Hi RMK!
I need some help!
Im in the prosess of buying my ht equipment and I need all the help I can get
this is the list of componets I will be purchasing.
Integra DHC-80.1
3-crown xti 2000 amps for the front ch.
2-crown xti 1000 amps for the rears
1-crown xti 4000 for the subs
5-jtr t8s for the front ch
4-jtr slanted 8s for the rears
2-captivators for the subs
and 2 growlers for mid bass (if I realy need them) If I do go with them I would upgrade the crown amp to a xti 6000.
2-belkin pure av pf-60 power conditioners.
that is realy the meat of the ht Im building.
so what I need is advice,and lots of it!
I have a little trouble understanding such things like hp filters and how to eq my system
for maximum dynamics.
are there other products I need to consider that will Improve my systems funtionality.
the crown xti amps have on board dsp will that be enough or will I need to buy an external eq.
I dont expect you to answer all my questions but some advice from you guys who have the experiance with this gear would realy help with my ht build, plus I'll start my ht build thred soon and I'll post lots of pictures on my progress for you all to enjoy!
thanks so much and I look foward to sharing my ht build with everyone!
post #224 of 4725
Thread Starter 
Quote:
Originally Posted by blackraidon View Post

Hi RMK!
I need some help!
Im in the prosess of buying my ht equipment and I need all the help I can get
this is the list of componets I will be purchasing.
Integra DHC-80.1
3-crown xti 2000 amps for the front ch.
2-crown xti 1000 amps for the rears
1-crown xti 4000 for the subs
5-jtr t8s for the front ch
4-jtr slanted 8s for the rears
2-captivators for the subs
and 2 growlers for mid bass (if I realy need them) If I do go with them I would upgrade the crown amp to a xti 6000.
2-belkin pure av pf-60 power conditioners.
that is realy the meat of the ht Im building.
so what I need is advice,and lots of it!
I have a little trouble understanding such things like hp filters and how to eq my system
for maximum dynamics.
are there other products I need to consider that will Improve my systems funtionality.
the crown xti amps have on board dsp will that be enough or will I need to buy an external eq.
I dont expect you to answer all my questions but some advice from you guys who have the experiance with this gear would realy help with my ht build, plus I'll start my ht build thred soon and I'll post lots of pictures on my progress for you all to enjoy!
thanks so much and I look foward to sharing my ht build with everyone!

OK... well it looks as though you are going for a 9.2 system and you have done some homework. I have not used Crown amps but I'm sure they are fine. Hopefully they are in a separate equipment room as they will likely generate some fan noise. So you’re thinking one amp for the mains, one for the heights or wides, one for the center and one each for each surround pair? If you run the sub amps channels in parallel mode (one channel for each sub) that will allow the 80.1 to see separate subs and it will set them accordingly. I wouldn’t worry about any additional subwoofer EQ as you can always add that later if needed.

I’d leave the growlers out for the moment as they are probably unnecessary and would really complicate the setup/install. The good news is the DHC 80.1 will make your setup easy. The on-board Audyssey MultEQ-XT will set the speaker crossovers (HP) and EQ your system setting levels and distance for all speakers and subs. You will need to adjust the crossovers post Audyssey as it tends to set these a little screwy at times. I would suggest the T8’s @ 80Hz and the S8’s @90Hz as a good starting point. Plan on running Audyssey a couple of times (if not more). There is an excellent Guide in the Audyssey Thread in the Amps/Processor section of this Forum. Read that first.

Position of the subs is crucial and you should do some reading up on that. This Harman white paper is info rich and a good guide but quite technical. There are many descriptions of the "Crawling for Bass” technique on the web and that will give you some ideas on best position for the subs.

You didn’t mention room dimension or size but you are creating a very powerful system that could fill a large space. It might be overkill for a small space but better too much. Room treatments is another thing to consider. The GIK Acoustics has good info on this topic and they will assist on the configuration of the room should you decide to go that way.

You also didn't mention a source player. If you aren't going HTPC I would suggest the OPPO BDP-83. It will handel just about any format and has been a great player for me. Bottom line is that you have chosen some good products and if you take some time to set them up properly you will be rewarded with a very high performance system. Have fun and report back as that is how we all learn.
post #225 of 4725
Gotta be dumb one more time in an effort to be smart and not order the wrong thing:

For connection to the amps I need, male to female 2 pole/connector speakon cables, right?
post #226 of 4725
Quote:
Originally Posted by blackraidon View Post

1-crown xti 4000 for the subs

I can't remember where I read it, but someone did an amp test on the Crown XTI series and it turned out to not be so great for driving low frequencies. I think it was the 1000, though, not the 4000. It may be worth looking into that as a possible issue, though.
post #227 of 4725
Got my first shipping notice.

I am SO excited to have my movies and music again

I finally have the right male-to-male speakons and wired them for the bridged amp. Should do the wiring tomorrow so that when the subs come I only need to work on placement.
post #228 of 4725
I just want to post a quick, WOW.

This sub shakes everything and rattles my seat. It is very clean...wow.

I am still having issues I need to work out and I have only listened with the passive radiator off which makes it a triple wow. No other sub I have had (pb13 ultra, vkf-3, eD 18" diy duals) was this powerful out of the box and set up soooooo poorly in my room.
post #229 of 4725
While paitently waiting for my two Captivators to arrive I have been looking for amplification. I have found a used Crest CC4000 at a reasonable price as well as other comparable amps. (Crown CE4000, Crest 8200)

- My question, regarding the output volatge of a receiver or processor to the pro amp, should be at least how much (volts) in order to avoid a signal booster?

- Anyone recommend a good middle of the road AVR that matches up well with a pro amp for subwoofer duties?
post #230 of 4725
There is a new JTR sub in the lineup as of yesterday. Jeffs' calling it the growler duo, bridging the gap between professional and home theater subwoofers. Go to the JTR forum and check it out, Jeff posted some preliminary specs of this new sub.
post #231 of 4725
Quote:
Originally Posted by bodhisafa View Post

There is a new JTR sub in the lineup as of yesterday. Jeffs' calling it the growler duo, bridging the gap between professional and home theater subwoofers. Go to the JTR forum and check it out, Jeff posted some preliminary specs of this new sub.

I thought the HT crowd might like a 4000 watt powered subwoofer that is capable of some serious "Fun".
post #232 of 4725
How does the passive - growler duo - get "low" tuned if there is no button on the amplifier?
post #233 of 4725
Quote:
Originally Posted by Jeff Permanian View Post

I thought the HT crowd might like a 4000 watt powered subwoofer that is capable of some serious "Fun".

FYI Jeff.... I hate you for all these new things to make me lust after
post #234 of 4725
Was just thinking about this....since the growler is a horn would you have to load it up against a boundary to help it extend in to the lower octaves?
post #235 of 4725
Quote:
Originally Posted by bodhisafa View Post

Was just thinking about this....since the growler is a horn would you have to load it up against a boundary to help it extend in to the lower octaves?

All subwoofers benefit from being corner loaded (eighth space). The Growler Duo does have a much longer horn than the Growler. The Duo is still concept stages, prototype will be finished within the next couple weeks and data from testing will be made available soon after that.
post #236 of 4725
I am using the CC1800 amp with my captivator but I find it to be too loud so I'm gonna send it back. Anybody know any other good amps that would be quiet and power the captivator well besides the emotiva XPA-1?
post #237 of 4725
Thread Starter 
Quote:
Originally Posted by Duck_of_Death View Post

I am using the CC1800 amp with my captivator but I find it to be too loud so I'm gonna send it back. Anybody know any other good amps that would be quiet and power the captivator well besides the emotiva XPA-1?

Your CC1800 has a single speed fan and makes more noise than the CC2800 and CC4000 (I have the CC4000) which have dual variable speed fans and so run much quieter.
post #238 of 4725
Yamaha amps or behringers with the fan mod. Face audio also.
post #239 of 4725
Quote:
Originally Posted by Duck_of_Death View Post

I am using the CC1800 amp with my captivator but I find it to be too loud so I'm gonna send it back. Anybody know any other good amps that would be quiet and power the captivator well besides the emotiva XPA-1?

Try Yamaha P7000S, I am driveing two folded horn subwoofers with and fans till now never switched on yet. It has two in but they are switching on when amp is hot and then switching off.
post #240 of 4725
Quote:
Originally Posted by Duck_of_Death View Post

I am using the CC1800 amp with my captivator but I find it to be too loud so I'm gonna send it back. Anybody know any other good amps that would be quiet and power the captivator well besides the emotiva XPA-1?

i'm using a QSC 1850HD with fan mod and it is dead silent. Powers the CAP beautifully.
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