I think ceiling treatment makes a lot of sense. You can get diffusers from QRS in the same color as the current ceiling paint that should be too visually intrusive.
Ron’s New System
- Thread starter Ron Resnick
- Start date
J.R. has much more accurate acoustic analysis software than my basic real time analyzer.
Of course I was very curious to use my prior methodology to see the new frequency response.
BEFORE
AFTER
For some reason the treble region depicted in these charts bears no relation to what anyone actually hears in the room. No one hears a roll-off starting at 2kHz. I am using a professional, extremely flat frequency response Earthworks QTC-4 microphone, so I don't think it could be explained by the microphone.
In the room we hear a flat (a little too flat for me, as I am fine to start rolling off subjectively in the treble region) frequency response.
Of course I was very curious to use my prior methodology to see the new frequency response.
BEFORE
AFTER
For some reason the treble region depicted in these charts bears no relation to what anyone actually hears in the room. No one hears a roll-off starting at 2kHz. I am using a professional, extremely flat frequency response Earthworks QTC-4 microphone, so I don't think it could be explained by the microphone.
In the room we hear a flat (a little too flat for me, as I am fine to start rolling off subjectively in the treble region) frequency response.
I believe there was a Pendragon setup in Malaysia or Singapore that had the same alignment as your new configuration.
That individual mentioned he tried both positions and definitely preferred woofers on the inside, panels on the outside.
If you experience some loss of center-fill, try angling the Ribbon Panels slightly toward your seated position.
Interesting! I have never seen Pendragons in this configuration before.
Yes, thank you.
Consistent, I believe, with Gary Koh's set-ups for his big Genesis, and consistent with my two decades of Martin-Logan practice, and against standard Pendragon practice, all towers have zero toe-in (parallel to the front wall). Any toe-in on the panels here seems to add brightness.
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I've been listening all afternoon! I am loving the sound! J.R. rocks!
I played Reference Recordings Symphonie Fantastique peaking at SPL of 102dB. Subjectively the room boom is gone!
I really think that anybody buying a serious stereo system should program into the budget professional set-up by J.R.!
I played Reference Recordings Symphonie Fantastique peaking at SPL of 102dB. Subjectively the room boom is gone!
I really think that anybody buying a serious stereo system should program into the budget professional set-up by J.R.!
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Because ears arent microphones. Fletcher Munson and all that. The big difference is in the crossover region, despite a rougher response.
Thank you, Al! You will have to come back for another visit!
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Ron, I would like to offer that aesthetically the set-up now looks to my eye considerably more pleasing. I love the way the Jadis are neatly tucked in behind the mighty Pendragons. Your dedication to the system build and set-up is admirable and the room a lovely sanctuary from which to enjoy music. Congratulations on the progress with JR's assistance! I am looking forward to my next visit.
Yes so at 89db that's 1w 1m, not 2m. 18khz is right in line with all BG's, and the 250hz is not the natural roll off. They clearly are not different in function, as they're all alike across the board with all the iterations - and this was stated by someone who used all of them for products. The pro version however has higher quality parts that cost substantially more.
Correction, you're use to me being abrasive because you come out of no where with nonsense, but think you're being objective. You have a history of believing you interweave information correctly to prove points, but don't have the knowledge to verify it - while telling off people who actually do work on audio, do have knowledge etc.
The fact that you know the difference between the PE/DIY version and the pro should also mean you'd know they were all more of the same and like seen everywhere else meant to be drop in replacements (6ohm, 75 inch, etc etc). The parts were higher quality but they're the same design and parameters (which came from a Bob Carver design).
I've argued with Morricab about misunderstanding/statements from him before, but credit where it's due... he's not so inept he can't easily understand SIMPLE db levels. He does actually play and measure with the same formulated drivers. All while you're arguing if something is off by a db then it's a wildcard that no one can possibly know WTF is going. Would you think a the speedometer is pointless on a 4x4 vehicle if you put on larger tires?
You're accusing me of seeing the tip of the ice berg? I think you need serious help for logistical thinking. In your mind if something is off, it's the difference between say 128w or 256w, due to 3db, so it's wildly unpredictable to mere humans. But there's 6 compounding 3db moves prior to the difference between those two wattages (18db). What's more important, a factor of 6 compounds or 1 compound? Well consider it's a linear 3db each time, the weight of all the changes is still in the frequency of compounds, not the compounded totality. It's slightly more complicated because there is some drop in distance, but there's also compounding extra db from 6ohms... why get into it, you can't even handle the thought of 1db being off and trying to discern what's happening. Your no better than someone that wants to win a philosophical argument solely because you caught a grammatical error from your counter-arguer.
These drivers don't compress anywhere near sensible levels because they play above the range where they run out of steam. Even if you took 3db off of sensitivity for no good reason at all, you can still crack 100db on 100w, at the chair.
And you're incorrect to say the Pendragons never had a sensitivity measurement. I had a PDF saved that stated it, but that was when Ron first chose to get them. What's floating around the internet seems to lack it in basic searches, but there was one years ago. In fact in this reply I quoted someone who posted a rating.
That was unintentional. I had to orient the Jadis amplifiers that way only because the VTLs are taking up so much space behind the woofer towers.
Eva Cassidy "Fields of Gold"
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It reminds me of some Maggie owners who would put the tweeters on the outside. Apogee owners always had the tweeter on the inside…
It’s a line source…ceiling treatment is unnecessary.when i see some ceiling treatment then i will know you are serious.
there is an acoustical devil on one shoulder, and an aesthetic angel on the other. Tinka lurking somewhere around.
sounds more bottom up, more integrated and better than before.
i don’t like the song but I love that she is in fields of barley. Highest in fibre along with beans and chickpeas, more than bulgur or quinoa, and great texture. Apart from the fibre benefits, you can replace rice in Indian dishes or in Chinese fried rice or Thai mango rice pudding with barley and get better texture taste. Would like to try it in risotto if I get a good barley risotto recipe
i don’t like the song but I love that she is in fields of barley. Highest in fibre along with beans and chickpeas, more than bulgur or quinoa, and great texture. Apart from the fibre benefits, you can replace rice in Indian dishes or in Chinese fried rice or Thai mango rice pudding with barley and get better texture taste. Would like to try it in risotto if I get a good barley risotto recipe
Line source dispersion is cylindrical, this means virtually no ceiling or floor reflections. There is virtually no dispersion on the vertical axis…it’s why the SPL with distance drop is less with a line source than a point source, which disperses evenly in all axes.
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