pragmasi

Responses from pragmasi

Capacitors for HP filters in tube amps recommendations?
I said, "personally".       You’re welcome to your opinion, if you have one regarding time-constants (which is to what I referred, but- you never addressed) and anyone else’s, that you value.I was trying to be helpful, not make anyone wrong... I'... 
Capacitors for HP filters in tube amps recommendations?
Personally; I never paralleled capacitors, unless they were identical, to avoid any possible time-constant disparities.That's not a concern... capacitors in parallel will just sum in value (like resistors in series)... the source and load won't se... 
Speaker Question?
Okay, I understand what you're doing now. I'd still go with bulk foil resistors as they are precise (1% tolerance), have a low temperature coefficient and have low inductance (as opposed to wire wound). As for resistance value it would be difficul... 
Speaker Question?
The tweeter resistor is usually there for attenuation purposes to match the output level of the tweeter to the other drivers (tweeters are usually more efficient than mid/bass drivers). You can calculate the required resistance by comparing the dr... 
Are integrated amps technically better than separates?
I believe either topology can be as good as the other, it's just down to the price you want to pay for the functionality you need... personally I prefer separates. My preamp has inputs for MC (transformer) and MM cartridges, four other analogue in... 
Is there such a thing as too much power?
If you're speccing an amplifier you need to go for the amount of power that you'll actually use plus a small amount of headroom. That doesn't sound very helpful but in order to optimise your system properly you need to understand the gain structur... 
Is there such a thing as too much power?
This thread is worth a read (you can get the gist from the first two posts). By following the instructions you can work out how much power you need. If you look at the poll results you can see that  >70%  indicated 25W or less with nearly 40% n... 
Stuck at home? Make a kit!!
DIY is great, I started a long time ago because I didn’t trust Hi-Fi marketing BS so I thought I’d learn and make my own decisions. I think kits are the best jumping in point to learning as at least you’ll end up with something decent in the end.S... 
Oscilloscopes - what specs to look for?
Most of what I was going to say has already been said here, mostly by @georgehifi. I do a lot of audio electronics, I use a QA401 for measurements (it's truly incredible value for money when you compare it to the other stuff out there) and an unca... 
How long is too long for interconnects?
If you have balanced (XLR) interconnects then no problem at all. If you have coax (RCA) connectors then it depends how much noise they pick up from the environment (hum etc), and the ability of the pre to drive a capacitive load. Best advice is pr... 
Sonic effects of 20+ year old crossover capacitors?
Looking at the brochure provided by @bryhifi the caps look like polypropylene or similar. If you want to get to them you’ll need to remove the woofer and/or the driver above it which looks like a passive radiator (if it is then it won’t have any w... 
Sonic effects of 20+ year old crossover capacitors?
I'd visually inspect them. I assume that a quality speaker this will have polypropylene capacitors which should be fine, electrolytics would be pretty much at the end of their life by now (if there are any electrolytics they'll be in a metal can a... 
Volume level chain
The Bryston runs of +-15V rails so will be fine with the full output from the DAC which you can set to 'direct out' bypassing the volume control entirely. 
Volume level chain
Generally I'd avoid attenuating the digital signal and keep the laptop and DAC at 100%. If you're trying to balance the level between preamp inputs so that the DAC channel isn't too much louder than another component then I'd use the volume contro... 
Adjusting speaker positioning. What, if anything, to expect?
Interesting idea to use an out of phase track, I've never done that but it's worth a try. But you don't need to buy a special cd, you just swap the wires over on one of the speakers to invert the phase. When the speakers are perfectly out of phase...