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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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Thank you Paul! Yes, I did notice Romy's tweeter movement, he also described it two posts ago. But I have a different room than him (smaller, dead, close walls, etc). I like the HF a lot, esp. with Ortofon cartridges, but I'm missing some air. C...
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[quote user="Romy the Cat"] Elso, I failed
to calculate the very precise size of enclosure necessary to make all the
system work properly. Generally speaking, if you have a very very small
listening room and very up-close position, and if you ...
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I recently had a visit by a close friend, who is an accomplished modern jazz saxophonist but a recording/mixing engineer, running his own small studio. We listened to some bass-heavy material on my Dannoys, the bass was acoustic - piano and drums. Da...
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Paul, you have the 1988 original CD or the new Japanese reissue?...
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Bill, if the ambience information is not on the material then Auro will not create it? It is extraction and not addition right? I'm asking because I do not listen modern digital formats, mostly old vinyl....
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Thanks Romy. Given the power of 801A preamp, this correction is not necessary. I simply increase the volume compared to my clone of 834 RIAA or other sources and the autoformer at the output is still in the attenuation mode, providing increased outpu...
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It's quite a marvel from what I can tell now. The overall sound is somewhat on the darker side but the preamp is still breaking in (although I gave it 30h benchtop burn in with the frybaby track). I also suppose it reveals the Dannoy and the room int...
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Paul, my headphones are electrostats that need a separate driver. I use Blue Hawaii amp with a quad EL34. The preamp has a direct output from the selector switch, which will be connected to the headphone amp....
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Thanks Paul! No, no, it works with Yamaha B2 and my Dannoys. I continue researching this intriguing project. For the Staxes I do not need a preamp. 5V is a plenty enough for B2 which has 1Vmax sensitivity....
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After eons of construction, I've finally completed my version of the 801A premap, based on Ale Moglia /Bartola Valves design with his Gyrator anode loads, SiC bias and Rod Coleman filament supplies. 6 inputs, switched by an Elma switch and Dave S...
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Bill, how about your Dannoys? Some time ago you wanted to dismantle your horns in favor of Dannoys or it was more of a figure of speech ;)?
I keep loving mine and think they are the best choice for a small space I have.
...
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Alsyvox and Diptique Audio (not sure if those are ribbons)...
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[quote user="Amir"]Funny video from Acoustical systems and Wilson Benesch Turntable systems, lots of marketing hype in their presentation and finally the sound is dead crap.Wilson Benesch Marketing hype: "the future is carbon" finally you hear Crap t...
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Paul, congratulations! But which of Troels' projects have you completed? The webpage shows them all....
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I'd rather look for the FM magic, which I love and adore, in the modulation/demodulation process than physical field propagation. Perhaps FM process creates a stable, ~1/n harmonic spectrum like a triode? ...
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Edgar, there is a part of the field that travels directly through the air from the source to the receiver and the other part that travels along the wire. What seems "instantaneous" is the in reality a very very short but finite time that the light ne...
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Anthony, good point (as always from you). First, my initial thought is to avoid any absorption not to deaden the room more than it is dead now. Hence hardwood diffusers. Right or wrong, the experiments will tell. Second, I did a bit...
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What sound? With Remedies or horns? Funnily enough, a few days ago I played via Dannoys my heaviest cannon - Decca London Reference +FR64S all silver wired, Charcroft Z-foils etc etc. Big symphonic music, not particularly my favorite but... it wa...
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[quote user="Edgar="]
N-Set, I invite you to make your own recording of the phase of your Dunnoy. I used my phone camera to do it and a free online sweep generator. I had Tannoy, Scanspeak and laptop screen all in shot when I filmed and shot...
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Edgar, very very nice observations re the phase! Can you somehow share the movie? Shouldn't there be a second phase jump around Fs of the passive radiator?
Have you tried combining sealed subs running parallel with Dannoys? I.e. ...
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I didn't comment because I don't have much to say. Correct me if I'm wrong, but I doubt it will have a smaller volume than a sealed box....
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[quote user="Paul S"] Are you planning to drive the SS lower than the frequency gained by the box? I don't remember the older drivers having long Xmax and/or high BL, or high mms, so multiple drivers and likely more power, not to mention biased X/O, ...
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Yes, of course, I was using 20Hz as some reference only. It's Fs of the ScanSpeak. Tannoy is the only active speaker so all power comes (or not) from it. From your experience with Reds, where does its reasonable output end?
Like...
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Good question, what is the actual reasonable output of Dannoy at 50Hz, no idea. To make it clearer, let me summarize my actual thoughts (possibly wrong):
Variant I (PR sub):
1. I accept 20Hz as the lowest freq a...
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Found this old experiment of Romy:
http://www.goodsoundclub.com/Forums/ShowPost.aspx?PageIndex=1&postID=26298#26298
Dannoy + 2x active paralleled ScanSpeaks in a sealed box of unknown tuning freq, b...
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[quote user="rowuk"]
The Fs
resonance does have its width BUT that means that the 30 Hz PR resonance
out of my example is excited when the driver is not exactly at 30 Hz
(not that a 30Hz PR can resonate at 32 0r 28Hz!). By ...
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Paul, the 2nd option - "more" down to Fs =20+Hz (not 50Hz as you state) with the hope of the weird bottoms blending and augmenting (= more headroom down to Fs). But this is just me thinking loud....
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Paul, I'm only learning here but if I understand correctly, a passive Scanspeak will not effectively lower the Fs of the active Scanspeak/s, as the notch is at the Fs of the passive radiator, irrespective of what the active radiator/s is/are. ...
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Thank you Rowuk for the explanations.
[quote user="rowuk"]The Tannoy driver moves at 32 Hz, the passive radiator can only move at its tuned frequency - 30 Hz.
[/quote]
I understand what you are trying to say,...
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Looks like the phase response is quite complicated, with two phase flips between the knee and the Fs notch, but the PR phase eventually comes back to be in phase below the Fs:
"I
am sure we have all heard that a passive radiato...
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