intactaudio

Responses from intactaudio

Best SUT For Van Den Hul Crimson Stradivarius cartridge
Hey I'm late to the game on this one but I have a customer who was using a Lyra Etna (0.56mv) with a 1:20 into his VPS100.  He wanted a bit more system gain so he went for a 1:40 and things went south quickly.  The highs got ragged and the sound b... 
Phono Preamp. With transformer or fully active
Dover,This simply means that the Zesto added the network in order to deal with the transformer behavior. That is very different than having a phono with that network at the input and then designing the transformer to work into it. This is an easil... 
Phono Preamp. With transformer or fully active
I do, it retails for $3500 and has had stellar reviews.Which phono stage is this?  I agree with you on the phase issues and at some low and high frequency a transformer is going to shift phase and I think that the shift at high frequencies is much... 
Phono Preamp. With transformer or fully active
I might have been a little unclear above when I typed:I do not consider the use of the rather heavy secondary load in addition to a Zobel as a sonically acceptable solution.That should read:I do not consider the use of the rather heavy secondary l... 
Phono Preamp. With transformer or fully active
I specifically chose the 4722 to avoid the appearance of throwing another manufacturer under the bus so to speak.  The only place I have seen signal level have an effect on frequency response in SUT's was with units wound on cores with poor low le... 
Phono Preamp. With transformer or fully active
18:1 is a bit on the high side for a 103 but not terrible.  Problem with the higher step up and the 40Ω cart is any capacitance on the secondary claims the 20kHz+ info quickly.  The 103 is a 0.3mV cart and into a 1:18 loaded with 47K you get reall... 
Phono Preamp. With transformer or fully active
Ralph,Cartridge loading is another hotly contested subject that is best to save for a new discussion.  It seems we both agree that applying a load through the secondary of a SUT has a much greater chance of changing the SUT behavior in an audible ... 
Phono Preamp. With transformer or fully active
In order to add a bit to the road Mike went down his first audition was with two pair of identical 1:20's, one in silver and the other in copper.  Initially the silver was preferred and after a few weeks he found that the internal SUT's to the CS ... 
Phono Preamp. With transformer or fully active
Raul,A number of years back I always found it odd that it seemed that there were two camps on loading of MC cartridges.  One camp insisted that 47KΩ was the proper number and changing it made little difference.  The other camp was fanatical down t... 
Phono Preamp. With transformer or fully active
Hello Raul,I actually posted that "story"on this site back in 2008. https://forum.audiogon.com/discussions/thoughts-on-cartridge-loading-with-a-sutI have some more recent thoughts on the process and measured results at the link below. http://www.i... 
Phono Preamp. With transformer or fully active
Ralph...Loading the transformer is well-known to control issues in the high end- the 'underdamped' part to which you refer. I do not consider loading of the secondary of a transformer an acceptable way to control transformer behavior.  Of course t... 
Which cartridge ?
The high purity copper coils do not change the internal impedance from 40Ω to 14Ω.  The 103R has fewer turns of thicker wire and a stronger magnet to make up for the lowered output voltage from the reduction of turns.Dave 
Phono Preamp. With transformer or fully active
With one SUT you can't use all MC cartridges, such phono stage is not universal for all MC. It will work for some of them nicely, but if your cartridge impedance is very low (2 Ohm) or very high (40 Ohm) you can't use one SUT for both of them. I'l... 
Choosing an SUT?
I have not found the low impedance MI carts to be a good match with SUT's.  While the reflected resistive load can be kept in line with what peter suggests, any capacitive load also quickly comes into play and causes a LC resonance with the cartri... 
SUT to MM cable? what should i get? cable mis-match
In addition to short and shielded, low capacitance is critical.  This is a high impedance node which makes it ripe for hum pickup and premature rolloff / phase issues from excessive capacitance.dave