timpani

Responses from timpani

Why do intelligent people deny audio differences?
During the past several years, I've spent a large amount of time designing and building pre and power amplifiers, in an attempt to learn more about why different designs do sound different. During that time I've become more and more aware that sub... 
Any feedback on how good the Marantz SA-11 is?
Which issue of TAS ? 
B&W Nuatilus
I've just come back from my friends house after 6 hours of listening to his 800Ss. Words alone are inadequate to explain. I heard more detail than I ever thought was possible from a pair of hi-fi speakers. They put my Infinity Renaissance 90s to s... 
B&W Nuatilus
It will be interesting to see reviews with performance measurements. I've read the white paper and yes there is some (compelling) evidence to suggest better compatibility with SACD , DVD-A etc.. due to the higher break up frequency but the white p... 
Universal Players that do not convert DSD to PCM?
For what it's worth The best starting point is to identify the actual DAC used and to then check the data sheet to see if it supports DSD and PCM. There are cheap universals around such as the Pioneer 563 that use Burr Brown DSD 1791 DACs capable ... 
pre-amp upgrade bug...MF A3cr to a ???
If you would like to keep the pre, the mid bass emphasis can be mostly corrected by replacing the output coupling caps with larger and better quality electrolytics. There are also 2 inter-stage coupling caps near the motorised volume control, but ... 
Problem with Musical Fidelity A3cr pre-amp
The problem is in the first gain stage and is due to slew limiting in the feedback network. I resolved the problem by replacing 2 x 47pf capacitors (1 per channel) with 22pf. This reduces the amount of local shunt feedback and removes the slewing ... 
Current source/Voltage source, and like questions
Eldartford, Then, yes your idea for current fb is quite valid. Current is sensed to the load and compared at the diff input. As with voltage feedback though, current fb also comes with its own set of penalties. Some of these include potential inst... 
The best speaker you ever heard?
accuracy - B&W 800N/Stransparancy - B&W 800N/SDynamic capability - JM Labs Grande Utopia beBet midrange - B&W 800N/SBest HF performance - JM Lab Grande Utopia beBest LF performance - Duntech SovereignSoundstage and imaging - Infinity E... 
Current source/Voltage source, and like questions
you may be confusing amplifier gain with current and voltage feedback. Most Power Amps employ global voltage fb but current fb is becoming increasingly popular due to better bandwidth and higher slew rate. Without going into the nitty gritty, the ...