lewm

Responses from lewm

Why do most phono preamps lack XLR input even thought cartridges are naturally balanced?
kijanki, To the degree that signal handling by the two phases of a balanced circuit is not exactly symmetrical, you are correct in saying that will reduce Common Mode Rejection, and it does for sure in tube-based balanced circuits, because exact m... 
Why do most phono preamps lack XLR input even thought cartridges are naturally balanced?
First, it's a longstanding tradition to offer only RCA inputs.  Second, it is not enough to offer XLR inputs alone, in order to take advantage of the balanced nature of phono cartridges; one would have to introduce a true balanced phono circuit in... 
MC Cartridge: Elliptical; around 0.5mv; track 1.25-1.75; Affordable
Most re-tippers either cannot or will not rebuild a suspension. Don’t buy a cartridge that is likely to need a new suspension or a rebuild of its old suspension. That would be a mistake. Changing the cantilever and stylus type can be done, and tha... 
MC Cartridge: Elliptical; around 0.5mv; track 1.25-1.75; Affordable
Elliot, Basically this thread consists of you naming products you saw on the internet after suggestions were made by Chakster and others, with not much comment about whether you really want to buy it or can afford it or fit it into your system.  T... 
KOETSU VERMILION and audio research PH7
So I guess the output of your phono stage was just not sufficient to drive the Hera linestage for it in turn to produce enough signal voltage to drive your amplifier.  (The results are dependent upon the input sensitivities of each of the componen... 
Right channel bias in analog setup
Someone misled you.  Changing azimuth to fix a problem with channel balance can work to some degree, if the imbalance is minor, but in the process of correcting that problem, you inevitably end up with an extreme setting of azimuth that is not acc... 
MC Cartridge: Elliptical; around 0.5mv; track 1.25-1.75; Affordable
A SUT is nothing but a transformer. As such it is liable to faults associated with transformers used at the interface between any two stages. Most commonly an effect upon bass and extreme treble response in the form of attenuation or loss of detai... 
KOETSU VERMILION and audio research PH7
I did not say, nor did I intend to say, that using a SUT is a bad idea.  I only say that using a SUT with the PH7 would probably be a bad idea.  Because it would likely overload the PH7 resulting in distortion, and because the PH7 at the very leas... 
KOETSU VERMILION and audio research PH7
The advice to use a higher gain phono stage may be well taken and I agree it is probably not advisable to add a SUT to the PH7, but not because of noise. If there is a JFET at the input of the PH7, it is likely forming the bottom half of a cascode... 
Buying a new TT today
Soko, if your phono stage has more than 60 dB gain, consider an AT ART7. Its recently been discontinued but you may be able to pick one up brand new by perusing the internet. I am more or less in the same camp with Chak when it comes to cartridges... 
KOETSU VERMILION and audio research PH7
You drove me to go to the website. You are correct. Koetsu lists the Vermilion as having an 0.2 millivolt output, much to my surprise. All the other Urushi variants are listed 0.4 millivolts. I can only conclude that something is different about t... 
MC Cartridge: Elliptical; around 0.5mv; track 1.25-1.75; Affordable
Is this a question? 
KOETSU VERMILION and audio research PH7
Forgot to say you should be ok as is in terms of gain. My Urushi Wajima  behaves as if it puts out more like 0.5-0.6mV. 
KOETSU VERMILION and audio research PH7
First, as wlutke says, the output is at least 0.4mV, unless the cartridge is in the Platinum series, which I doubt because I don’t think Koetsu made a Platinum version of the Urushi types. (Vermilion is essentially a red Urushi.) Second, it’s not ... 
Why Does My Nottingham Motor Seem To Run Fast?
Ned, In your first post, you wrote, "Not impressed with the motor either, unless I spin it really fast it never gets up to full speed."  I am not sure what that meant, but I assume whatever the problem was, it has also been cured.  Keep in mind th...