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Brisbane, Australia Meet 17 July 2010 - Impressions - Page 6  

post #76 of 88
Thread Starter 

I'm in the process of spending 300 or so on additional cooling for my computer. Time to laugh. I'm thinking of getting a ssd but the sandforce ssd's are still pricey...
 

Quote:
Originally Posted by tisb0b View Posti7 930: 353

Gigabyte GA-X58A-UD3R: 269
G Skill 6G(3x2G) DDR3 PC12800 8-8-8-24 (6GBRM): 214
OCZ 60G Vertex II E Series SSD: 264
Silverstone raven RV02: 190
Noctua U12P: $96
Windows 7 home premium oem: 120
Corsair VX550 PSU
Sapphire HD5770
1.5TB Samsung hdd
TOTAL: 1506


Edited by MomijiTMO - 7/21/10 at 10:08pm
post #77 of 88

I've quenched my thirst for audio gear by grabbing myself an ASUS essence STX for my computer. I listen to most of my music on the computer, as well as game and watch movies. Dolby headphones is fantastic, it really does sound like a surround sound speaker system. It has even managed to squeeze some more bass out of my AD700's, so can't complain about that. Very happy with the purchase!

post #78 of 88
Thread Starter 

Hmm one setting on the STX was the wall hack mode - you could hear foot steps ages away. Great for dust but terrible for office.

post #79 of 88

Hehe only CS makes people desperate enough to hack that they try to hear through the wall with a particular sound card  =P

post #80 of 88

desperate describes us all.

post #81 of 88

 

 

Hey guys, 3 weeks later I finally got to sit down a write something up. I went through the pictures again to remind me of what I listened to; here is what I think of the gear.

 

Grado RS1: they one were of the highlights of the meet, very impactful and closed soundstage in comparison to the HE5, the HE5 had better soundstage with slightly less bass impact. I would really like to spend some more time with them in a quieter environment.

 

Beyerdynamic DT880 (not sure what impedance they were): they were very welcoming, smooth. The sound seemed to float in a cloud with these.  Also would like keeping them for a while as with the RS1.

 

Audio technicas: I am referring to them in general performance. I was not seduced by their sound or fit. The low and high notes were to messed up with for my tastes; too colored, or at least not my kind of coloring would be my take on audio technicas. The only one that was kind of alluring was the Raffinato, still, none of them will be owned by me (well, I did own one once, greatly regret it).

 

Balanced HD600: finally I hade the chance to listen to a balanced setup, and the advantages I found to it agreed with general consensus; tighter bass, better imaging and wider soundstage, all of those attributes to an already great sound is very good. Would I go and balance all my setup? No, at least not while I am in my teens.

 

Grado GS1000: only one word, but cubed. Dissapointment.

 

All the other headphones that I listened to were good, just not good for me. This meet made me realize how different can one headphone be from one person to the other, it is all about personal taste.

 

Moving to amps the ones I liked more were the Balancing Act and the Burson HA-160. The HE-160 fascinated me so much when I tried it with the K701, GS1000 and every other headphones I threw at it, that now my EF5 is for sale. The RWA amps were not all good, definitely not worth the high prices they are asking for in my opinion, I find the whole “clean power” thing kind of a voodoo statement, its all electrons pushed into the wires either way, saying that some are cleaner than other is nonsense to me.

 

I liked all the sources, but in such noisy environments that is not to be taken even with a grain of salt. Getting to know sources take more time and quiet places. Got to say I was drawn to the Meridian CD player, but must have been the Balancing Act talking.

 

Well, that is all the rambling I managed to get together. Again, I thank you all for making it possible, what an amazing event it was. Here’s for repeating it 

 


Edited by JIGF - 7/30/10 at 8:06pm
post #82 of 88

Its not the electrons that are clean or dirty, its the waveforms they produce and sometimes the vibration of components themselves that pollute the signal. some components will simply not work at all if fed the wrong power source. texas instruments et-al are not really what I would call witch doctors and they each have an entire catalogue of thousands of components to supply the correct power in the correct situation. I think your reductionist view is somewhat naive i'm afraid. the difference in dynamic range performance of a good dac or amp fed clean power and one fed dirty power is extreme. it might make the difference between 135db (really good dac) and 70-80db (worse than old ipod and ibuds) power supply noise is the waveform that the music rides on, to say its not important makes no sense. a PSU with bad PSRR (power supply ripple rejection) will let all of that noise through to the signal. power supply switching noise can become so bad that you do not even need the headphones on to hear it, the radiated mechanical vibrations themselves are clearly audible. there are much quieter batteries than the SLA in use by RWA and they do produce some of the cleanest power around, any measurement you have seen of high end equipment will have most likely been taken with a scope powered from a high quality filtered and regulated battery supply.

 

I have no interests in power supply products, these views are based -purely on personal experience and fairly common knowledge. granted there is much about the power tweaking area that is indeed sus, but there is also much power circuitry that without it, good quality audio would be impossible.

 

/rant over :D

post #83 of 88

I knew that comment would not go without consequence . And no, I will not rant about it, no time nor gain from teaching physics here.

post #84 of 88

Guys, I recorded a video that would like to post somewhere but my video editing skills are next to zero, anyone that would like to do it? I will send a CD with the video to the one that volunteers .


Edited by JIGF - 8/22/10 at 3:16am
post #85 of 88

 



Quote:
Originally Posted by JIGF View Post

I knew that comment would not go without consequence . And no, I will not rant about it, no time nor gain from teaching physics here.


hehe so you have something to teach Ti about physics? I used some simplified language there if you wanna pick holes in it, but it sounded like that was what was called for TBH. I know electrons do not themselves create waves, but waves are what is used to describe them in audio terms and on a scope, the main way we have of analyzing them and their effect in a circuit. there is even a specific and very scientific term for what i'm talking about, PSRR (power supply rejection ratio) which is used to describe the effectiveness of the device to reject the noise caused by its power supply; look it up. i'm not talking voodoo here and this is not the only branch of science and technology that is penetrated. radio telescopes for instance also need clean power so as not to cause interference.

 

but hey youre right, this isnt the place to talk about it

 

sall good, but I couldnt leave that untouched, its pretty integral to all of the gear on here, and consumer audio, class D in particular is a nightmare here, see what a class D amp sounds like without an inductor on the power supply and a huge cap; then tell me dirty power doesnt make a difference to the sound. even SLA batteries cause noise due to the chemical reaction. 


Edited by qusp - 7/31/10 at 9:30am
post #86 of 88

Hehe, thanks for being so nice and informative qusp, I appreciate it.

 

On another branch, anyone for the video yet? I must insist someone to come up please.

post #87 of 88

I have not heard rwa stuff so take this as a general comment.

 

Their theory behind using batteries is that you start with a less noisy source than rectified and filtered AC.

For amp circuitry, unless the remaining noise in the DC is in the audible range (eg 60hz hum) then it is most likely you'll never even know it is there without a scope.

 

Digital circuitry (dacs ect) often measure / scope better the cleaner the power you can feed it and noisy supplies can affect what you hear (though admittedly this becomes a bit subjective once you have an anywhere decent supply).

Ti Kan (AMB) demonstrated this (scoping better) recently when he feed a gamma2 with a sigma11 psu instead of a wall wart.

I believe the guys at TPA have also shown this quantitatively a fair bit in the threads over at DIYA by running shunt regulated power supplies (the "placid") instead of the simple lm317 supplies which are pretty average regulators.

 

The biggest advantage I can see from running batteries in an Amp situation is that there is no transformer to induce hum.

This can be fixed just as well (imo) by using a separate case for the psu.

 

All this being said I don't think SLA batteries are the best choice anyway as they have their own raft of inherent problems.

Something like these LiFePO4 that people are starting to get into their hands are a probably a better choice.


Edited by nattonrice - 7/31/10 at 5:25pm
post #88 of 88

so no one up for the video?

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