jmaldonado

Responses from jmaldonado

What Makes a Good RIAA or Line Stage?
Stephen, exactly. Having the 3.18 us zero in the phono stage simply leaves the response flat after 50 kHz (instead of keeping the roll-off up to infinity). That way it cancels the 50 kHz filter that was not part of the RIAA eq. With all things bei... 
What Makes a Good RIAA or Line Stage?
The above is true only for the standard Lipshitz method of EQ. If EQ is split across two stages (the way I do it, for example), then the switch is possible.Quite easily in fact (with the right topology). The 3.18 us turnover point is an extension ... 
What Makes a Good RIAA or Line Stage?
...fully corrected and stabilised curve, channel identicity. The last two are more than just difficult -- they're horrendously painstaking, boring (think of "trimming" to get the "right" R -- and once you get there, you realise that your next pole... 
What Makes a Good RIAA or Line Stage?
Jose, or anyone else, have you correlated RIAA error to colorations? As in, error of x amount or of y type leads to a z coloration.Dan, in my experience the term "coloration" involves 2 facets:On one hand you have a measurable deviation of flat fr... 
Balanced in phono stages preamp?
Speaking of a phono cartridge, it's just a floating coil with 2 wires. As the coil is floating, you have the choice to operate it as either single-ended or as a true balanced signal source. If you connect the negative terminal to ground, and use t... 
Balanced in phono stages preamp?
Atmasphere, agreed. The notion that balanced circuits are more complex that single-ended is a myth. In fact, balanced operation in comparison gives you twice the voltage (+6 dB) than single-ended, which in many stages would allow you to eliminate ... 
What Makes a Good RIAA or Line Stage?
"RIAA eq deviation no more than 0.05 dB... Why?"Five reasons:1. Because the technology exists2. We can use this technology without any detrimental effect on the audio quality3. It adds a negligible cost to the product4. It automatically results in... 
What Makes a Good RIAA or Line Stage?
A Line or RIAA stage could be characterized as "good" if it complies with its primary objective: To amplify the music signal with enough gain to be listened comfortably at the proper volume level, and do it without introducing obvious anomalies no...