Techniques for Improving Sound Quality in Speaker

mvasu22

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Folks,

Have collected some materials that I found over the web and am collating them here. Hope it is useful to someone. For those who see this as very basic kindly bare with it.

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There are many simple stereo system upgrades and techniques that will greatly improve sound quality. Many of the upgrades are very affordable and easy to install.

Upgraded Speaker Wires
Many companies offer high-end speaker cables, some of them costing hundreds of dollars per foot or meter. The benefits of these cables are many, especially for very high-end stereo systems but are out of reach for many buyers. Fortunately, in most cases you can improve the sound of your system simply by installing larger gauge speaker wires. Many speakers and stereo systems come with speaker wire that is only slightly larger than dental floss, which prevents the system from performing at its best. Speakers should be connected with a minimum of 12 to 14 gauge speaker wire, especially systems with power output of 50-75 watts per channel or greater. Upgraded speaker wires are one of the best investments to improve performance.

Speaker Stands
Speaker stands affect sound quality at least as much as speaker placement. Speakers, including bookshelf speakers should be positioned at ear level while seated and not on a shelf or inside of an entertainment center. To get the best performance from bookshelf speakers, place them on a stand sitting on the floor. Speaker stands come in a variety of sizes and types and take little floor space.

Correct Speaker Placement
Correct speaker placement is almost as important as choosing the best speakers. Speakers emit sound waves that interact with the listening room and its furnishings and correct placement can help get the best performance. Correct placement costs nothing except some of your time, but is well worth it.

Audio Cables
Audio cables connect source components (CD, DVD, tape players, etc.) to a receiver or amplifier and are as important a good speaker cables. Audio cables carry low level signals that are subject to interference and noise and upgraded cables can improve overall system performance and sound quality. Better cables can improve audio detail, imaging and soundstaging as well as extending frequency response.

Speaker Spikes
Speaker spikes are metal spikes on the bottom of floorstanding speakers that decouple the speaker from the floor. Spikes reduce secondary vibrations of other objects in the room and allow the listener to hear only the speaker and not other vibrating objects. Speakers that can use spikes have recessed threads in the bottom of the cabinets, or you can place the speaker on a stand or platform with spikes on the bottom. In general, bass is improved with the use of speaker spikes.

Room Acoustic Treatments
Room acoustic treatments are one of the best ways to improve the sound of any system. Bass traps, absorbers and diffusers allow the listener to hear the speakers and not the reflections from the walls, ceilings and other objects in the room. Room acoustic treatments come in many styles and colors to fit almost any room decor. To learn more about room acoustics and acoustic treatments, read this article.

Powered Subwoofer
A powered subwoofers is required for a home theater system because film soundtracks have a separate channel devoted to bass for special effects. Subwoofers also have benefits for stereo systems. A powered subwoofer reduces the amount of amplifier required to drive the left and right channel speakers because the subwoofer is amplifying the bass. A subwoofer also reduces the strain on woofers to produce low, deep bass, especially woofers smaller than 8 inches in diameter.

AC Power Conditioner
A power conditioner provides steady, filtered voltage and current to stereo system components allowing them to perform at their best. Amplifiers and disc players have electronic components and microprocessors that are sensitive to small fluctuations in voltage caused by power providers. Supplying a constant, clean voltage to these components improves their performance. Many power conditioners also have surge protection, a vital necessity in areas where lightning is common.

New Speakers
Speakers are the most important factor in determining the sound of a stereo or home theater system and the best upgrade to get the most bang for your buck. Before replacing an entire system try upgrading speakers first. Speakers come in a variety of types and sizes including floorstanding, bookshelf, in-wall, on-wall and in-ceiling. Check out my article about how to choose speakers and read a few speaker reviews to find the best speakers for your system.

Bi-Wiring Speakers
Bi-wiring a speaker is an inexpensive way to improve sound quality by running two identical lengths of wire to each speaker, or by purchasing a set of bi-wire speaker cables. Not every speaker can be bi-wired, but if the feature is available on your speakers, take advantage of it. Learn more about bi-wiring speakers by clicking on the link.

Will update as I get some more info.
Thanks
-Vasu
 
Cables are debatable at the best of times, 5th post on this thread is very revealing and there is logic to it,
http://www.hifivision.com/av-lounge...er-knowledgeable-posters-post-more-often.html

From my personal experience I can say that cables do have an effect. I recently switched from cables that came with my Sonodyne bookshelves (copper cable, of decent quality as far as I could tell) to 14 AWG DAC pure copper cable. The result was an immediate smoothing of the sound, mellower but more musical, less attack but more enveloping.
Not to stir up a hornet's nest here but the material used in the cables could very well have an effect on the output, it is quite apparent in my opinion.
 
Lot of controversial items on the list and a few obvious ones are missing.
I won't go into the speaker cables. power conditioners, bi-wiring etc.

I feel that first thing that should be considered is the correct amplifier and speaker pairing and for that matter all the other components.
Running in of the new speakers is something that I have found useful.
Bi-amping is another useful technique to improve the existing speakers.
No subwoofer in my opinion is a better option than poorly configured or low quality subs.
Proper speaker height (speaker stands), good stability and decoupling from soft/wooden floors (spikes) and correct placement in the room are vital for proper system sound.
For purists - room acoustics is essential. For non-purists, room acoustics is again essential but room correction can be considered as a final step after doing everything else.

(Just my point of view. :) )
 
Great effort by mvasu for the benefit of beginners, welldone.

I remember, Ive started my journey of real hifi a couple of years ago and decided to plunge in and started investing in beginner audiophile equipments.

Expertise from various forums and some other audio experts whom I've met personally has helped me kick start and keep going!

Actually, I believe it all started (pursuit of hifi sound) while I was in India during my teen age back in early 90s and we used to own a beautiful National Panasonic stereo cassette deck with radio. Those times at least at my place audiocassettes were the only source.
Then came CDs and computer audio into life but still was a very rare thing.
I was quite amazed by the computers and the fidelity they have due to CDs dynamic range, but not satisfied with the puny speaker options at that time with computers.
During that time, (late 90s) I set my eye on one of the most drooled over systems Sony GRX-80 and persuaded my father to buy for me when Ive scored high on my 10th grade.lol. Finally, secured one from a hifi importer for Rs 15000.
I tell you boy oh boy, I was on a roll with it for few years. We still keeps it in gd condition as it brings gd memories.
Since then, it has been a fascinating journey through so many interesting technologies like mp3, multichannel audio, DVD, SACD, HDCD, Blueray, HD Audio, Loseless audio formats etc etc.
Over the years it has been a great learning experience too and the weirdest thing is that..... the more you knows about it, you'll come to know how little you knows!!

Fast forward..now we have so much information at fingertips to learn and real hifi has become more accessible for everyone. Forums are a fantastic platform to share and learn.
Hat's off to you guys who really take time to contribute..Kudos.
 
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Hi friends,

If you ask me what's the most important thing that I've understood over the years from hifi,
I must say, The quality of sound that you can reproduce doesn't depends only on the money you spend on them but also on so many other factors from room acoustics & footers
to the quality of source material available.

Sometimes you will be amazed by experiencing great sounding systems for a fraction of some stupendously expensive stuffs!
The funniest thing is that the exact same configuration can sound inviting or terrible depends on the place you are in.

Each factor whether big or small can make significant changes here but it all depends on how you as a listener can experience and it's subjective to a great extend.
The order of doing those things are also important otherwise you don't see the results by doing it making you think it doesn't work or it's just a Placebo!

So in this context, Speakers have very significant role and is closely associated with how & where you place them with respect to the listener and surroundings.
The more places I visit (hifi expos, Specialist shops & dens, Demo rooms) the more I came to believe that room acoustics helps to bring the best out of your modest setup that you may already have.
Some of which are inexpensive DIY stuffs.
Failure to understand it has costed so many people so much money unnecessarily spending more on new rigs which temperorily gets a sense of satisfaction but never lasts....
This has encouraged me to do some experiment with room acoustics recently and again learning has started....
 
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Nice info. Thanks for sharing.

I recently changed my thin speakers wires which came as part of YHT-299 to more thicker one's for my AJ speakers and I could see little difference in terms of sound quality.
 
Nice info. Thanks for sharing.

I recently changed my thin speakers wires which came as part of YHT-299 to more thicker one's for my AJ speakers and I could see little difference in terms of sound quality.

Hi Muralidher,

I guess by little difference you mean no change at all....is that correct?
 
Yes. But I just changed it a day back and I haven't given full hearing. I must have added this info on my previous post. Apologies.

I recently moved my speakers and did wiring again, and suddenly my AVR was going on & off on it's own after some time. Not always but it happened on same day for 3-4 times at different times. It used to get resolved for a while after I power off.

I read it might be due to speaker wires not properly inserted or using thin wires for powerful AVR. So I did changed the thin wires to more stronger one's yesterday and haven't got the problem as yet.

Hope I am clear now...
 
Hi Murlidher,

Well, I think AVR shutdown might have occurred due to some kind of short circuit and the protection circuit may have kicked in to protect the amp. Glad to know that you have resolved the issue.
There are reasons why you didn't have any noticeable difference.
It's a whole lot different set of rules for Stereo and Movie setups to attain optimal performance. i'm not saying changing to a bigger gauge speaker wire doesn't helps but not significant here.
Whatever Ive mentioned regarding factors that improve the sound quality is applicable for pure music playback through dedicated stereo setups (2ch).
There's a lot of compromises and hence so much colouration that can occur to recorded sounds if it has to go through many components when combine analogue and digital circuits (audio & video) and other myriad of signal processing, especially in a single box.

In the case of movies, these various signal processing helps it positively and are welcomed most of the time as it can give you a larger than life experience as movies always should be.
But when it comes to pure music, lesser is always better (doesn't mean lesser components but lesser processing).
The best system is one that can add or remove nothing from the source provided, in other words being transparent. Only a transparent system can reveal you the subtle changes that you bring by doing all the external mods.
In the case of AVRs, the changes will be overshadowed by the processing power of electronics and making it impossible to appreciate. This is where an old school proper 2 ch stereo system excels.
The same reason for me to come back to stereo after sticking around with multichannel AVRs to attain the best of both worlds, which is always a compromise at the expense of genuine music enjoyment. The next issue is space of course, the lack of it for setting up a proper cinema room....lol.
 
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Thanks for the detailed info. I will certainly give a try listening in pure/direct mode and give a try.

With regard to possible short circuit reason you suggested, i doubt as I have total of 3 interconnected vguard connection (may sound weird) and my AVR is connected to the 3rd one. The first is connected to direct power (since I have only one 3 pin connection) and I had to connect multiple things like D2H/TV/AVR/SW etc., Hence I am using 3 VGuards and the AVR is connected to the last one. so if there is any short circuit, I believe the first two Vguard stabilizer would have taken care of that.

Having said that, I didn't faced that issue before that and after that. :)
 
Hi,
I have a problem with my Stereo System and need your advise. I have an old JVC - AX-V8 Integrated Surround Sound Power Amp that I am using as a stereo music system with a pair of Infinity Alpha 20 Speakers. The Infinity Alpha 20s can be Bi-amped/ Bi-wired but I had been using it all along as mono-amped till yesterday when I tried to Bi-Amp the speakers. My JVC AX-V8 has A+B set of Front speakers with 2 selector switches. I connected it and switched on and the result was totally disappointing. Just a metallic sound with no bass depth at all. The technical sheet of the JVC says that the Fronts have an impedance range of 4-16 ohms and by running both A and B sets of speakers the impedance range does not change. The Nominal Impedance of the Infinity Alpha 20 is indicated as 8 Ohms. What am I doing wrong here? Your help would be most appreciated. (see attached pixs of speaker crossover and amp connections)
 
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Excellent list. Thanks to OP. For me, speakers make the most difference followed by the quality of the source material and speaker placement in the room. The rest have not made as much difference. So I would suggest buy the best speakers you can and then get the music that has been well recorded. Buy a decent stand and try a few speaker placement locations.
 
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Maybe a few points have already been covered here, but I would like to suggest a few which may not require one to spend any money to improve the SQ. And these are all from my experiences.

Try changing :
- Speaker positioning : toe in or flat out
- Distance between the two speakers
- Speaker Distance from the back & side walls - reinforcement from adjacent walls makes a huge difference. Adds a few db to the bass and makes the mid bass more prominent at times. At times makes it sound whole bodied.
- If your entire audio chain is resolved enough, one could look at changing speaker cables.

There is no set formula or any right or wrong when it comes to these points. The acoustics of the room can make or break the musical experience. However, before anyone writes off their speakers, do try these little mods and see if you feel any improvement. Stereo imaging is something that drastically changes by tweaking the above mentioned parameters.
 
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