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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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drdha,Is your hum comming directly from the purepower unit itself?I've been doing some research on hum issues in general; a goood site for information is linked here [url]http://www.epanorama.net/documents/groundloop/home_solving.html[/url]Previously...
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[quote user="Romy the Cat"]I can not speak Swedish and have no idea what they say but here is a Swedish 50Hz horn project. I admit that I have difficulties to like people who design horns in Hornresp but… for whatever it worth…
http://www.hififorum...
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30cm Subwoofer Type Number: 30W/4558-00 • Fiberglass/Paper Sandwich cone, black coated • Fs 19,5 Hz • SPL 90,5dB @ 2,83V / 1m • 56 mm peak excursion – hereof 25mm linear • Aluminum Short Circuiting Ring and the Aluminum Spacer on the pole piece t...
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[quote user="Romy the Cat"][/quote]Ok, here are some thoughts that I have after the last night experiments. The tests were made with Sunfire subwoofer, wiath is bad sounding machine but excellent LF test source. The Sunfire slope wary from 3rd order...
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[quote user="Romy the Cat"]Anyhow, I did the measurements today and what I saw shocked me. Of the ULF sections has nice 20Hz at MF level then they have +12dB at 60Hz level. That explains everything but it also absolutely clearly indicates that the se...
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Hi Romy:No need to reach for your medical glossary. The medical condition that I call 'Imponderabilis Neurosis,' is only the preserve of highly disturbed individuals such as myself (Hamlet seems to have exhibited symptons which are highly indicative ...
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Oh, rowuk, you have no idea how much I agree. To me passive theaters very much like ports and I hated anything which stay even remotely close to it. However, this time the entire Remedios project is is very different s s is built not based upon knowl...
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Last week found that the distortion I was having was due to some small separations of the woofer cone from the surround suspension probably from age and playing too loud. Applied the glue to them received from English tannoy dealer and distortion...
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[quote user="guy sergeant"]Hi Romy,My experiences with the SL6 and SL600 date back 15-20 years. My problems with the sound I could get from them related to their inability to recreate music with scale or drama. I found the subjective lack of high fre...
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The Aura
1808 had free air resonance at 24Hz and required enormous sealed
enclosure of 14-16 cu feet. Wilson Audio used the Aura 1808 in their
unfortunately-ported XS subwoofers and soaked from their relatively
small enclosure an extra 19dB...
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[quote user="Romy the Cat"]
Any LF acoustic system has two SPL levels: the SPL of pressure and the SPL of tone.[/quote]Ahhh! Very good Romy. I don't recall you talking about Pressure and Tone SPL before. The tapped horn can be designed any 3 ways....
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[quote user="Romy the Cat"]It is obvious that 6SN7-2A3 and 6E6P direct have very different character. The 2A3 it feels like heavy-sunk time of tube and it constantly run a fully submerged. It has seriousness but it does not look at this point that i...
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Hi,I am slowly building my own Macondo. I understand why the injection channel is there. It brings some kind of softness that the compression drivers lack. I am using a 12" JBL midbass driver (~100dB sensitivity) in a 50L single driver Marshall cabin...
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[quote user="haralanov"]
Romy the Cat wrote:If you feel that 25W/8565-00 is a good driver then try many of 25W/8565-00. You might try it using both channels on one side and playing mono recordings…That was the first thing I made when I finished th...
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All-I'm optimizing new speakers, but the deep subject matter is a little new to me. Will this work?Using a pair of Welborne Labs DRD300B SET amps (tapped 8ohms) with a 3-way passive crossover to integrate these drivers. Here is ...
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Hello,
I've just come across this ground shaking project:
"Royal Device has on its own developped and built in Italy the biggest subwoofer of the world for an AUDIO/VIDEO room that can be also considered as the greatest AUDIO ROOM for private m...
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[quote user="skushino"] The sub arrived before the main speakers, so I practiced integration with my existing speakers. They are rated full range to 20Hz, so I expected little change in performance. Instead, what I noticed with the additi...
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Hi Roman et al!Allow me to introduce myself. I have followed with amusement Romy the Cat for many years. He is ascerbic and ultracritical, but he does know audio. We share many tastes, like the Koetsu Onyx Platinum foir instance, on...
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I chose the EdgarHorns for fairly simple reasons. I have listened to them and I loved the way they sound. They are not the perfect loudspeaker, but they make much truer music than what I have now. Also, the price I paid is less than...
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[quote user="NBC"] 1) What dimensions for 1808 baffle would you suggest? [/quote]
It would be easy to circulate from the resonance frequency of the driver. The 1808 marked at 24Hz but in practice it could be anything from 23 to 29Hz. Since you...
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Hi Romy, I recently heard the smallest Cessaro and while I felt that the bass was not adequate for long term satisfaction it was also not a total disaster. From the midbass on up; however, the speaker is simply superb and one of the very best h...
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Someone at AA’ sewers posted his measurements of Edgarhorn system, supplemented with a subwoofer and Fostex Tweeter. I do not know the poster personally, most likely he is another AA’s advice seeker – means another idiot - and therefore it is ha...
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Romy:I hope you go ahead with your project of installing the horns in your attic as you are probably the only person who might pull it off, but if my opinion was solicited, I think you would be very ill-advised to do so. Firstly, the costs involved a...
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Now that the preliminary excitement of my ingenious idea wore off, I'm ready to share it and accept the harsh reality of any shortcomings... but seriously.
For a while now, I've been been working on optimally integrating my 3 channel...
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What a complex attic structure!!! I had to look above 2 pics several times to able to visualize what is what.
Regarding about playing with a subwoofer to find a good place for bass, I did some kind of such experience before but couldn't get ta...
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I do not mean to be negative and criticize Romy, but he is wrong on surround sound. It is the implementation and not the concept which should cause vomiting, like with the vast majority of two track recording which are unlistenable. With the rig...
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Congratulations, Romy, I think you just re-invented the ISOBARIK loudspeaker.
Although, Linn's Isobarik implementation of two drivers moving in parallel separated in a small chamber which would be nearly in constant volume (and pressure) couldn...
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I was just trawling over at diyaudio.com (like I do) and a recently updated thread caught my eye and had these tidbits from Josh the Visitor regarding critique of Macondo/Melquiades and Romy's stated viewpoints of GSC:[QUOTE]Well. I disagree that dig...
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[quote user="drdna"] I also use the 6SN7-2A3 DHT for my system (except subwoofer). Did you use the Electrocubes for the coupling capacitors? Was the internal wiring regular copper?
The coupling capacitor is critical, of course.
Also, I will say t...
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It is even hard to critique because it is beyond of being ignorant of stupid. The John E. Johnson’s review of Lamm L2 preamp in the “Secrets of Home Theater and High Fidelity”. Below are the fragments of the John E. Johnson’s pearls… Each quoted stat...
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