Darrel
Junior Member
Posts: 58
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Post by Darrel on Jul 23, 2006 19:56:36 GMT -7
Hey CJD, That's good news. I will look forward to your SQ evaluations Thanks Darrel
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cjd
New Member
Posts: 22
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Post by cjd on Jul 30, 2006 14:11:43 GMT -7
Well... They go deep - enough to set my room into all sorts of rattling and creaking. The manifold as I've built it isn't solid enough, in fact. They definitely can reach down into the lower octaves, and depending on level, can do so very cleanly. I do, however, have some reservation (still possibly unfounded) about their ability to survive extreme low bass at somewhat significant levels (I would guess nominal was ~85dB with peaks higher, possibly approachign 100dB, and with frequency very very low). I'll have to haul them out and do some listening open baffle (where the dipole losses will help tame room issues and allow me to more specifically focus on driver issues). They're nowhere near dead, so I guess survive isn't a fair word. I had some interesting issues with both a Franck organ piece and some of the scenes toward the end of "Matrix:Revolutions" The sweeps in the end-title soundtrack were fun - can't tell whether they stop going down, the drivers roll off at that point (<30Hz), my hearing, some combination... C
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Darrel
Junior Member
Posts: 58
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Post by Darrel on Aug 4, 2006 13:17:35 GMT -7
Hey Cjd, I would like to thank you for the evaluation and your willingness to participate in the Beta testing... Like all good things this to must come to an end. I need to have you conclude your listening test soon and get these drivers headed back this way.... I have a manifold built for them and am very much looking forward to playing with them myself . Maybe some time after the weekend we can work on getting them moving this way. Thanks Darrel
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cjd
New Member
Posts: 22
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Post by cjd on Aug 4, 2006 16:10:29 GMT -7
You bet! I appreciate your patience! I already had plans to pull the manifold and give them that open baffle listen, which makes them easy to send off. I have not yet received my computer back from loan, but I've had these so long... no excuses. Can you forward the required shipping information (it may be on the labels still, I don't remember) just so I know for sure where they go and all that stuff? C
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Darrel
Junior Member
Posts: 58
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Post by Darrel on Aug 4, 2006 16:40:39 GMT -7
Hey CJD, No apologies needed! No big hurry either... (I sent that data to you in an e-mail) Thanks, Darrel
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cjd
New Member
Posts: 22
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Post by cjd on Aug 6, 2006 13:05:40 GMT -7
hmmm. I've not seen an e-mail from you. try sending to: mandcdalessio at sbcglobal dot net may have been snagged by the server side spam filtering. C
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Darrel
Junior Member
Posts: 58
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Post by Darrel on Aug 6, 2006 17:27:25 GMT -7
Hey CJD, I just tried you at this address.. Please let me know if you receive? Thanks Darrel
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cjd
New Member
Posts: 22
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Post by cjd on Aug 13, 2006 10:11:29 GMT -7
I got it. Have the drivers boxed up but morning meetings last week prevented me from being able to get them shipped. Work is insane right now (huuuge project, code complete is the 28th, and I don't have anything to work with to do about 1/3 of my work: I've already been on the project for 3 months, so I have about five weeks of work to do in 2...) I also wanted to follow up with final listening impressions. I pulled the manifold out and ran it in-room, dipole. I also added a brace across the manifold mouth as it was adding noise. These go deep, and can take a beating. I was moving enough air to get substantial thump even dipole. At high excursion, they pick up a very little bit of noise, I think surround related. But I'm going go guess this was at about 6cm peak to peak excursion. The oddest thing is they seemed a bit sluggish - can't tell if this is them being slightly more sensitive to low level data on the source or not though, or even the amplifier failing to control them adequately - there did seem to be signal they were responding to, so my guess is it's not the driver at fault. The worst part of this whole endeavor is twofold: I know my current drivers do not move enough air for me, and my current HT speakers really *are* pretty bad. So now I need new subs and new HT speakers. Might as well tear the room out and do it right, eh? New projector, full treatments, the works. C
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