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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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With stereo you hear sound from more than one source (speaker) and the sound from each source is very nearly the same except for some variations in amplitude of certain frequencies and some phase differences which occur because the microphones us...
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I recently assembled my analog setup and the last week played some record - I did not do it for 6 months or so due to all reconstructions…. Playing last well Bruno Walter M4 from 1948 I come across an observation – why our mono cartridges are so scre...
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Adrian, although I find plenty of "mono" recordings that sound better to me in "mono", I will always take good stereo over good mono, other factors being equal. Sure, some "stereo" is so poorly done that it just does not work as stereo.&nb...
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Who know anything about this needle?I am playing now this CG-25 - my new Ortofon replacement. This new cartridge is turn out to be “MONO CG 25 Di”. It looks and feel completely different and this CG-25 is what I called the TRUE mono cartridge. I...
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Who know anything about this needle?I am playing now this CG-25 - my new Ortofon replacement. This new cartridge is turn out to be “MONO CG 25 Di”. It looks and feel completely different and this CG-25 is what I called the TRUE mono cartridge. I...
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John, I had nothing to do with Voyd or Pink Triangle, I also not a big fan of Audio Note UK.
Mono cartridges is good, in fact I feel that Mono Cartridges IS A MUST for anyone who do analog more of less serious. Defiantly a second arm is more conveni...
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I have lately been comparing the stereo and mono versions of many recordings from the 50's, and I have found that even when using the same stereo needle and closely matched for stamper number, the mono version is consistently better than the stereo v...
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Hm, I never knew that this set exists. The well-celebrated Leibowitz session with Royal Philharmonic was recorded in spring 1961. It was truly nice cycle and the Reader Digest subscription, as most they press, was a perfect environment for this box s...
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[quote user="difool"]What is the benefit of using 834PT in dual mono over a stereo 834PT? [/quote]
That is a good question and I asked myself it numerous times. My current standing is the benefits are purely intellectual as I am not able to observe ...
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Per Winfeld confirmed to me that the coil former assembly is rotated 45% compared to the regular SPU such that only lateral motion is sensed. Unfortunately I did not think to ask him how the coil/coils was/were wound. Since the quoted DCR is signific...
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[quote user="Romy the Cat"] I think I need to put a switch that would disconnect the right and left primary in case the Mono SPU is used. I ‘m still thinking about a more elegant solution…. [/quote]
Well, it is resoled and it is resoled remarkably s...
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[quote user="Teflon"]
With stereo you hear sound from more than one source (speaker) and the sound from each source is very nearly the same except for some variations in amplitude of certain frequencies and some phase differences which occur becau...
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[quote user="Romy the Cat"]Are any of those new tubes besides the Chinese tubes are single plated?[/quote]I believe they are all single plated.
[quote user="Romy the Cat"]I have bought some very nice 2A3 and 6A3 double plated from 1942 and 1944 an...
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Just finished one mono block 6C33C SE amp.To keep things simple (power supply only need 220V), I used a single driver tube (the second tube is there for backup if not going as planned) through an interstage transformer...
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Paul,I used both halves of 6C33C this time, I planned to use two 6C33C and uses each half for more power, but that would shortened the life of 6C33C if run one triode at max power dissipation. I used the C3G as driver, since I dont use negative feedb...
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[quote user="Brian Clark"]Per Winfeld confirmed to me that the coil former assembly is rotated 45% compared to the regular SPU such that only lateral motion is sensed. Unfortunately I did not think to ask him how the coil/coils was/were wound. Since ...
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Not sure how interesting they are, but EMT seems to makededicated mono carts OFD25 (65 for '78). According to fabtech.de :"The OF-series pick-up's are pure mono versions. The transducer is
constructed in a way to read only horizontal trackings. The...
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I don't think it is possible to deconstruct as you desire. Perhaps you need to talk to Per Winfeld at Ortofon (I can give you the email address).
The SPU Mono has 4 coils rotated 45 deg and connected for vertical modulation cancellation. The CG 25...
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I, after being sick and tired form the Denon 102 misery, got the Ortofon Mono needle. I was under impression that Ortofon Mono was true mono cartridge with one coil. However, when I opened it up to mount it’s insert on my “Chernobyl Spinnaker” tonear...
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I recently assembled my analog setup and the last week played some record - I did not do it for 6 months or so due to all reconstructions…. Playing last well Bruno Walter M4 from 1948 I come across an observation – why our mono cartridges are so scre...
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Do any of you, the SPU Mono users, know how the SPU MONO coils wired internally? Is it a stereo cartridge strapped mono or it is a single coil cartridge with two channels running in parallel from the same coil? Is anyhow even seen any...
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Romy, is that an SPU Mono that you have there? This converted stereo cartridge (SPU = Stereo Pick Up) has its coils rotated 45 degrees to reduce vertical sensing.
The Ortofon C Series are the genuine mono cartridges - the motor system is the same ...
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Methinks that Mr C is correct in that the SPU cannot be deconstructed as I asked the same question elsewhere and got shouted down. :-( But hey, maybe they were minor league rookies and some major playa has the answer.... By the way ...
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While the aftermath of the midbass horn project is not over I am strategizing how I might implement Macondo’s LF section. The leading idea is to bolt a triangular shape sealed enclosure juts behind the small wall that cover the load bearing beam from...
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I just was pointed out to an interesting article at 6 moons describing people built 23Hz horn.
http://www.6moons.com/audioreviews/hornographic2/1.html
I did not read it yet careful and look forward to read it with interest, to ana...
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Ok, I will try to lower the primary impedance like you suggested, but it will be on the new 6C33C mono block amplifier that I am building. The custom made chassis will be finished by next week and I have the better components waiting to get installle...
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Here we go: 250W into 8Rhttp://www.iconaudio.com/portfolio-item/mb81/The Cat...
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[quote user="Wojtek"]So, what is the solution for a mono system? Also, I remmember that your mono experiments with field coild S2 produced honk .Should you use stereo drivers to get better results [/quote]Use stereo system to play mono, a properly ma...
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I have been recording professionally for over 30 years...Both monophonicly and in Stereo,,,,Ambiophonics to me came closer to what i hear naturally..But decoding properly was not caught on by the general public......
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Romy,,Romy,, romy,,,,,Some times you can be so thick headed...in the logic of mono and its correct use,,nothing faulty...All music performed is live,,,and at times localzation is not percieved,,,How is mono haveing practical advantage over propertly ...
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