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In Reply to: RE: Anything you do to improve the room is going to pay off in a big way. posted by jihad on November 01, 2010 at 10:00:55
Well, not sure I can agree with that totally.
YEs, the room is the biggest part of your system and if setup poorly it works strongly against you. So acoustical tweaks are vital in most rooms.
But there are two other sources of noise that must also be controlled for you to maximize the quality of your sonics: your electrical system (both AC system and cabling between components), and your vibrational environment.
Awe-d-ophile has been working on all of those, as his list and his results testify. I can concur from my own and the listening rooms of others.
Those who don't try all 3 of the tweaking realms may very well not know what their systems are truly capable of, IMHO.
Follow Ups:
I would argue that unless you're listening through headphones it is. Well, maybe the quality of the recording.
You can tune your AC any way you want. Expensive fancy plated outlets and AC connectors can't/don't take the place of a sensible, knowledgable approach to addressing the AC that's fed into your components. They can't take the place of MOV or X/Y rated caps placed across mains, etc.
Have you replaced all of the lousy, sloppy and lose IEC connectors in your equipment with Neutrik PowerCon connectors? They are a much better connector and much safer than IEC connectors. This is an example of a functional upgrade not just an aesthetic one.
It's all a moot point anyway because it's all turned into DC by rectifiers that make their own hash and noise. Large supply caps put off magnetic fields and are full of ripple current. Those issues need to be addressed seriously, they're not something you can just throw eye candy at.
Never attribute to malice that which can be adequately explained by stupidity.
Here's what I did with the low frequency EQ unit for my Infinity RSIIb speakers. I built a shield of TI-Shield material around the rectifier filter caps, rectifiers and regulators, grounded to the chassis with a fat braided ground strap. The total noise dropped from 4.7mV to 1.2mV and the sound is much clearer and cleaner, with absolutely nothing to be heard from the speakers in terms of hum/buzz even with my ear to the drivers(there was some before). Check out the before and after noise spectrum plots - here's a tweak with MEASUREABLE results.
I use filters to with X- caps, forgot to mention that. 15 amp IEC connectors are pretty sloppy but not the 20 amp ones which I mostly use. Huge difference.
I also use a regenerator for sources and a Richard Gray 1200 choke I got for free but those were on my system before I added all the other tweaks.
It was easy too by the way to hear image, HF and bass improvement in the just the last two tweaks; the CD mat and my improved component footers.
ET
ET's EconoTweaks
A regenerator is nice, how's that RGPC 1200?
Never attribute to malice that which can be adequately explained by stupidity.
I think the 1200 makes only a small difference. In fact over the next few weeks I'm going to try it in and out of the system and sell it if it isn't really adding something to the mix. I hear a lot of people comment that its really good in a video system. I don't care enough about video to keep it for that.
I love regeneration but only for sources and believe that it must not be used but to around half of its current capability to leave lots of headroom so as to never let its limiter circuit kick in.
Thanks for your posts in this thread.
ET
ET's EconoTweaks
If you re-read my post you'll see that I certainly agree the room is the biggest challenge.
And I also agree that you can't just "throw eye candy" at any of the others.
I'm just pointing out that all 3 need to be addressed seriously in most households, not just the room (nor just either one of the other two main factors).
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