drbond

Responses from drbond

SUT - electrical theory and practical experience
@rauliruegas  I think a course in English comprehension would benefit you immensely, and allow you to contribute more positively to these forum discussions: Firstly, the thread in April was a thread about phono stages for a particular turntable,... 
SUT - electrical theory and practical experience
@atmasphere  That's a very thorough, well-considered assessment of the advantages and disadvantages of SUT.  Thanks for taking the time to share your knowledge with me / us!    
SUT - electrical theory and practical experience
I’m not sure that I completely understand the matter, but it seems that there are two options in cartridge signal amplification in or before the phono stage: either 1. an SUT before the phono stage, or 2. a transistor in the phono stage. If that’... 
Which power cords have high resolutions and separation??
@timetraveler66 Where do you live? I’m sure a local will take you up on that. I would, if you lived near me. There was one blinded "test" done on another forum which supported your hypothesis.  
Current sensing phono stages w/Rega?
@hleeid If you compared those three phono stages on your system and liked the Konus better, then that sounds like a reasonable upgrade. As others pointed out, the higher impedance will still work in a current base phono stage, but from what I re... 
Ultrasonic record cleaners
@antinn  The cloud point is an interesting property of Triton X:  I studied college level chemistry, and generally speaking, I thought most substances/chemicals were more solvent as the temperature of the solution increases.  But with Triton X, h... 
Ultrasonic record cleaners
@antinn  Thanks.  So it seems that, based on a flow calculation, due to speed of rotation, only 1 LP is recommended at a time in the 6 L tank.  And on review, it looks like 1 LP should be cleaned at a time based on surface area as well.  Your boo... 
Current sensing phono stages w/Rega?
With an output impedance of 10 ohm, I don’t think this cartridge (Ania Pro) is the best choice for a current-based phono pre-amp. . . I would recommend upgrading your cartridge: when I had a P8, I never appreciated vinyl more than after I got a L... 
Ultrasonic record cleaners
@antinn The ultrasonic cleaner that I currently have it 6" in width, which leaves 3" on each side of the LP if I clean 1 LP at a time. Is there any practical or theoretical disadvantage if I were to clean 2 LP’s at a time, with a distance of 2" ... 
Ultrasonic record cleaners
@antinn  I downloaded your book on an old ipad that is no longer used for anything with passwords, etc.  It looks to be a great resource.  Thanks to you and Bill for sharing that with the audiophile community! Are you aware of any real world exp... 
Ultrasonic record cleaners
@antinn  Thank you for the detailed response.  It looks like even on initial review that I could use 5+ oz of 91% IPA to get an approximate 2.5% solution in 6L. .. I am aware of alcohol's antibacterial properties, but I wasn't aware exactly what ... 
Ultrasonic record cleaners
@antinn  What, in your experience, do you think would be the best combination of additives to the distilled water in a 180W 40kHZ ultrasonic 6L bath for cleaning LP's  (e.g. how much 91% isopropyl alcohol, Triton X, dawn dish detergent, or other.... 
Ultrasonic record cleaners
Based on my initial experience, the first clean is as good as the second clean, and the static-type noise is still present on those noisy LP's.  The first clean probably decreased the surface noise by 50-75%, and made them listenable, but unfortun... 
Ultrasonic record cleaners
@mijostyn More thorough ultrasonic cleaning following many of the recommendations here did make my noisy records much quieter. . .(but these were mostly sealed records, without a scratch that played very noisily (tons of static-type noise (from ... 
Ultrasonic record cleaners
So, with my new, updated ultrasonic LP cleaning process, I do notice a significant improvement in sound quality. The updated process has made my slightly noisy LP’s (static, pops, etc) almost silent, with only an occasional static pop noted. The L...