Thanks again Gerg your replies have been invaluable. What started this whole idea was an idea I had of recreating an audio chair I saw in a now defunct hi-fi store.

My original idea was to have speakers mounted in the headrest and armrest with a sub in the lower backrest but after hearing the HD650's decided it would be easier, cheaper and better sounding to use cans and a sub.

Fyi that chair sounded better than most systems i've listened to but lacked the isolation headphones give you.

At any rate I'm thinking a proper sub mounted inside the backrest might provide good bass without oversaturating the cans...realizing of the chair would provide some dampening of course.

I tried a similar experiment, but without the chair attached to the sub. As I said, I don't want the vibrations. I set a sub with dual front firing 10" drivers on it's end, behind my chair. That gets the drivers close to my head, but still out of the way. It worked best with the sub against the wall (4x gain) and even better in a corner (8x gain). The normal room aberations are minimized because you are setting the sub level for listening right at the drivers, rather than somewhere across the room. This is how I listen to my K1000, which roll off a bit higher than other headphones (although they all roll off).


gerG

Oh, another option that I really like is a simple slot loaded configuration in a tall, narrow cabinet with the slot pointed at the listener. Combination nearfield sub/drink table! I will take a picture of the prototype when I get a chance.


gerG

You've got that right. I've got a home theatre that needs that right now. The front speakers are working overtime when some of the lower frequencies should be filtered out so the sub-woofer can do what it does best. Any ideas on what filters are good?

Jazz1- there should be some bass management options on your HT receiver/pre-pro that call for routing the bass to the mains + sub, or sub only. On mine, its the one about saying the mains are small or large. Most HT rcvrs have something like that.

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That's me using the K1000 with a powered subwoofer. The combination is great. But, I don't use the sub when listening to the RS-1 and HD650, since they have enough base. As for vibrapods, I bought them, but am still waiting for an e-bay seller to send me an amp for them. I got the idea from another Head-Fier who attached them under his chair. He included neat pictures of the hookup. I'm sure that this is a silly idea, but should be fun bouncing around when watching movies.

More power to you. But one reason I listen to headphones is to avoid bothering people -- and adding a big sub would certainly bother folks for some distance around me.

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"To each their own, said the lady as she kissed her cow."

I don't find my K1000's that lacking in bass. I don't understand why people want to add a sub to headphones. I never hear anyone saying they want to add a sub to Ety's. Those suckers have far far less bass "impact" than the K1000's. I suppose it was an easier thing to do since, the K1000's were designed to be connected to speaker amps.

Most subs are simply too boomy and loose. They wold totally kill the K1000's qualities that appeals to me. My Velodyne HGS-10 is one of the tightest and fastest (servo ownz) small room subs I've ever heard, but even it is too loose for the K1000's. I wouldn't even think of using the crappy sub from the Klipsch ProMedias. (I have it, and yes it is not an audiophile sub by any stretch of the imagination.)

And I also agree with Music Fanatic. If I really wanted to use a sub, I'd use it with actual speakers. Better yet full range floor standing setup. Headphones are for private listening (well, as long as somone is not standing right next to you with the K1000's). Headphones cannot begin to compete with a full speaker setup (well, budget consideration aside.), but they give me a nice slice of audio heaven that cranky, tone deaf neighbors can't complain about. I can listen as loud as I want, when I want.

-Ed

Ed, the K1000 don't lack bass, they lack deep bass. They roll off at 50 hz and are gone below that. Every test result that I have seen confirms this (including AKG).

mikeg, sorry, I didn't mean to insult you. I didn't realize there was another K1000/sub user out there. I did a thread on that a couple of years ago. kwkarth also uses this approach. Anybody else in the club?

As I mentioned, when using the sub in nearfield, you set the level for listening at the subwoofer, not across the room. That means it is very quiet on the other side of the room (about as loud as the K1000 themselves) and almost inaudible from the next room.

Good subwoofers are not boomy. Rooms, however are.


gerG

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In my case, wife tolerates sub when set for very low db output, but would be terribly bothered by loud speakers. BTW, I really enjoyed your jokes in another thread.

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I agree that when set too loud, the sub kills the K1000's appealing qualities. But, at a very very low output setting, the sub provides a very slight fill-in quality. It just rounds out the low end in a way that I really enjoy. When used in this way, the sub in no way overwhelms the K1000. But IMO, such fill-in is not needed with the RS-1 and HD650. I also enjoy the sub when watching movies on the computer, while listening to the audio with the K1000.

Hmmmmm. Perhaps I could lug my 45 lb 11" Cube to my headphone area.

Any ideas how to hook up a Sub with a dedicated headphone amp like the Grace 901? Do I use a splitter and output signal from my source to the Low Pass inputs on my sub, even though it's a full range signal? I don't have a dedicated sub output from my RME digi96/8 PAD soundcard.

How would I hook up my Klipsch ProMedia Sub for the hell of it?

-Ed

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I use a 10" Klipsch powered sub that seems to weigh about the same as yours. If set at high level, it can make the walls shake. But, I use a level setting of 4 or five out 10. My sub also has a lowpass filter, which I leave at 70 HZ, although I can also use 50 HZ, which probably would make no audible difference when used with the K1000. My intention is to let the headphone handle base sounds as far down as it can, and to have the subwoofer only fill-in a slight bit at the very low end. As for my hookup. I use an ASL Passive TIDT preamp which has two outputs. I pass one output to the ASL A!-1005DT amp that powers the K1000, while I connect the sub to the other output. Although this satisfies my needs, I could also use the sub as a filter, and thereby pass only > 55 or 70 HZ frequencies to the K1000. But, I've decided not to do that. But, to reiterate, I normally use very little (i.e., just a touch of) base fill-in with the subwoofer. In fact, if I did not already own a subwoofer from my "speaker days," I would not have gone out and bought this Klipsch monster. Although, perhaps I may have shopped for some modern inexpensive small subwoofer. Hope that this info is helpful, and that you don't get a hernia dragging your unwieldy monster from place to place.

Crap. I guess I would need to use a preamp if I use a dedicated headphone amp. No sub with the Grace.

-Ed

While you are looking at ideas, check out the Outlaw ICBM, an external bass controller. This (should) allow you to direct the bass to the sub and tune the cans response to your liking. Haven't checked it out myself.