Yeah, I managed to take Saturday all day to sit staring blankly at a TV with football on it, then back to work yesterday.
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Let's Talk About Amplifiers (1 Viewer)
- Thread starter JohnRice
- Start date
Well @JohnRice - is your week looking any better so far?
At the moment it's looking less hectic. Today is normally a day off for me and I only went in for 6 hours instead of the 10 I did last Wednesday. I think I get a full weekend this week as well, but that can change in an instant. I'm not actually complaining, because it's a very good thing and my work schedule is usually enviable. Just experiencing some growing pains suddenly after 21 years in business.
Will I manage to hook up the new amp today, before I collapse into my chair?
Only the shadow knows.
Only the shadow knows.
Sounds like it may be time to name a #2 man.
Finally, we come to my number-two man. His name...
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@John Dirk , back on the topic of Rap, along with stuff like Beethoven, I worship at the altar of Prog Rock and Prog Metal. As I said, some Prog Metal can have something of a Rap vibe to it. Not the same thing, but a certain similarity, though I tend to hear parallels that nobody else hears, so I could just be crazy. In particular, my favorite PM group Tool might have some stuff you'd find interesting. In Prog fashion, the songs get rather long, but I'm hoping you hear the similarity I hear.
Here's a favorite example.
Here's a favorite example.
Thanks @JohnRice - Would you consider submitting this track here? I'll respond and add the below comments.
What I like about this song.
- The percussion. I was a drummer [and oboist] in High School so I loves me some percussion. Kudos to that drummer!!!
- The tempo changes. It's creative and interesting. Few songs I've heard do it to this extreme.
- The musical complexity. As a musician I appreciate all of the various intricacies contained here.
- The lack of a coherent theme. It almost sounds like a jam session.
- Yes, it's on the loooong side but I did listen to the entire song.
Something fundamental about Progressive rock. The "songs" really are more like 3-4 songs woven together into a medley. They progress through multiple themes rather than staying in the same theme for the duration. That's actually what I like most about them. Though often they will return to a variation of the opening theme at the end.What I like less.
- The lack of a coherent theme. It almost sounds like a jam session.
And yes, Tool (and Dream Theater) has some of the most complex rhythms you'll ever hear. They actually have gotten far more complex than they do here. The tempo can at times be almost impossible to follow, but it is there.
For some really outrageous rhythms, check this out. It's fairly straightforward for the first 4-5 minutes, but then it goes bonkers. And, how often do you hear throat singing?
This will be on my listening list for tomorrow evening. Of course, this is the Amplifier thread, so...
Yeah, I’ll be over there...
Speaking of amplifiers - my latest addition to the zoo:
It's technically being used as more of a streaming device, but the built in amp counts right?
Uniti Atom
The new Uniti Atom by Naim Audio is our compact, high end all-in-one player with outstanding sound quality & an array of exciting features. Learn more here.
Hihi, escaping my ban from this thread to note: Amp fans should tune in to next HTU Pod
Speaking of amps, I think I just realized tonight I have so embraced separates that I use them in all 4 systems at home. I now have five amplifiers in my house, four of which are class D.
Two multichannel D-Sonic units in the theater, a stereo D-Sonic M3a-3000S in the office, an Anthem MCA225 in the living room, and a DIY Ghent audio icepower amp in the den/shared office.
Really the most amazing part is my wife hasn't kicked me out yet!
Two multichannel D-Sonic units in the theater, a stereo D-Sonic M3a-3000S in the office, an Anthem MCA225 in the living room, and a DIY Ghent audio icepower amp in the den/shared office.
Really the most amazing part is my wife hasn't kicked me out yet!
Don't think we've talked about this much, but what kind of current draw should our circuits be able to handle for these more powerful amps?
Are 15-amp circuits really enough for say the Emotiva XPA-DR2 (for my difficult Thiel CS5i's) and XPA-5 Gen 3 (for less difficult rest of the center and surrounds)? Seems like probably close enough since they're respectively rated for max 1700W and 2KW consumption at full power according to Emotiva's specs, but would probably need dedicated circuits -- and maybe another for a pair of subwoofers, eg. my Hsu VTF-3 MK5 is spec-ed to require 720W.
I do wonder about the XPA-DR2 though since it can (temporarily) push 2KW peak w/ <1% THD (at 2 ohms) according to this review's lab tests w/ max current of ~32A(?!?) -- hmmm, at first I thought that's max current draw from power circuit, but it's probably actually just the output current...
www.hifinews.com
Also wondering about the D-Sonic M3a-3000S, if I end up going w/ that over the XPA-DR2, especially since it can provide roughly 2.5x as much power as latter -- D-Sonic doesn't seem to provide basic info on power consumption (though there's lots of detailed info on output capabilities)...
I guess the other related issue is what about the surge protection? Had only been using fairly basic (though not super-cheap) surge protectors in the past...
_Man_
Are 15-amp circuits really enough for say the Emotiva XPA-DR2 (for my difficult Thiel CS5i's) and XPA-5 Gen 3 (for less difficult rest of the center and surrounds)? Seems like probably close enough since they're respectively rated for max 1700W and 2KW consumption at full power according to Emotiva's specs, but would probably need dedicated circuits -- and maybe another for a pair of subwoofers, eg. my Hsu VTF-3 MK5 is spec-ed to require 720W.
I do wonder about the XPA-DR2 though since it can (temporarily) push 2KW peak w/ <1% THD (at 2 ohms) according to this review's lab tests w/ max current of ~32A(?!?) -- hmmm, at first I thought that's max current draw from power circuit, but it's probably actually just the output current...
Emotiva XSP-1/XPA-DR2 pre/power amplifier Lab Report
The XSP-1 preamp may look ‘busy’ but at heart it’s a very clean design. Gain is about –0.7dB less than specification at +11.35dB (balanced in/out) and the volume scale shifted accordingly (so ‘0.0dB’ is –0.7dB, etc) but the 0.5dB increments are accurate. Noise is very low and the A-wtd S/N very...
Also wondering about the D-Sonic M3a-3000S, if I end up going w/ that over the XPA-DR2, especially since it can provide roughly 2.5x as much power as latter -- D-Sonic doesn't seem to provide basic info on power consumption (though there's lots of detailed info on output capabilities)...
I guess the other related issue is what about the surge protection? Had only been using fairly basic (though not super-cheap) surge protectors in the past...
_Man_
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My message for the day.
I completely forgot about that question. My understanding is that electrical circuits can (usually) carry a lot more than 15 amps (or whatever they're rated for) for short periods of time. Amplifiers typically only draw those massive amounts of power for fractions of a second. Now, there can be fire hazards, but essentially if your breaker isn't tripping, you should be good.
My HT room has two circuits in it, and I make a point of spreading the power draw between those two circuits. Of course, going from Class A/B to mostly Class H amps, at least on the channels with the most power draw, plus trading my plasma for a QLED (a constant drop of 500 watts demand!) has actually reduced the draw of the system while increasing its potential output.
I'm certainly no expert on the subject but isn't this what storage capacitors are for? Only a continuous draw should pose any risks of overload.
The modern designs (D and H) have a lot fewer capacitors, if any. Capacitors mean inefficiency, heat and power loss. I have to admit, I only have a conceptual understanding of that part of it.
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