• Hello and Welcome to HiFiVision.com - an online community for the home entertainment and tech enthusiasts!

    If you would like to ask a question, participate in a discussion and view attachments please Register yourself.

How to demo

Home Theatre Systems

zoey

New Member
Joined
Jul 26, 2009
Messages
68
Points
0
Location
India
Guys,
I had this thought in my mind.... So I thought I'l share it... We have sticky notes for product prices... In the same way can gurus ( Venkat , madbullram... ) over here put a small note on the points that one should be looking for when buying a LCD or AVR or Speakers. ... you know some sort of a buying guide thing.... This could help newbie or others ..when they are trying to buy something for the first time.....

What do you guys think ... will it be useful ...?
 

unleash_me

Well-Known Member
Joined
Oct 1, 2007
Messages
2,247
Points
113
Location
Nostalgia
silver_bullet_grips.jpg
 

suri

New Member
Joined
Mar 15, 2009
Messages
2,259
Points
0
Location
kannur

hmmmm......

bite the bullet?

you need an expanding bullet in your chest?

this forum ain't big enough for both of us?

just like these bullets have your name on them, just so the equipment you buy will have your name?

well, this time i must ask your help, unleash:)
 

Hiten

Well-Known Member
Joined
Oct 17, 2008
Messages
3,076
Points
113
Location
Kalyan
In the same way can gurus ( Venkat , madbullram... ) over here put a small note on the points that one should be looking for when buying a LCD or AVR or Speakers. ... you know some sort of a buying guide thing.... This could help newbie or others ..when they are trying to buy something for the first time.....

What do you guys think ... will it be useful ...?

My Friend,
you have given A simple solution to confusing decision making problem :) thanks.
In my opinion it would be very helpful.
Regards
 
Last edited:

spirovious

Well-Known Member
Joined
Apr 10, 2008
Messages
12,619
Points
113
Location
Mumbai
Important- How to Demo when you dont want to purchase & only review? :D
 

mandeep

Active Member
Joined
Dec 8, 2007
Messages
741
Points
43
Location
Mohali (Near Chandigarh)
Guys,
Speakers. ... you know some sort of a buying guide thing.... This could help newbie or others ..when they are trying to buy something for the first time.....

Let's try (Assuming you want to buy them) ....

HOW TO DEMO SPEAKERS

(1)Budget

The starting point is the amount you want to spend. Yes, its possible to get better sounding speakers in a limited budget also.

(2)Size,shape,wattage,Ohms etc

First you have to decide whether you want to go for Big one's or the smaller one's , if you have smaller room example 12 ' L x 9' W, then small size speakers would do good/look good, for a medium/larger room, for example 18' L X 12' W, bigger floorstanders would do good/look good. Wattage needed mostly depends on the Amplifier's o/p wattage, the nominal input wattage of a speaker should roughly match the output wattage of an amplifier.(but its always better that the amplifier have more wattage than vice - versa, for punch,dynamics, detail etc in sound ouput from the speakers).Its also important to know before hand whether your amplifier support 4 ohms/6ohms/8ohms speakers or not,some support all some not.So read the mannul of your amplifier and note down which speakers will it support.

(3)Try at home

If the dealer let's you put down a deposit and try them at home,then try them in the exact positions where you hope to end up using them, B'coz, the acoustic space in a showrom is different from your home.

(4)Take your time,there is no hurry

Audition with your own material (CD's, DVD's etc). Listen to the same songs, and movies over, and over again with the different speakers. Take your time, and have fun auditioning. And always remember the golden rule:- Always buy speakers that sound good to your ears not others, choosing speakers is a personal matter, b'coz choices differ from person to person.

(5)Get involved with member get-togethers

Another great way is to get involved with member get-togethers.
Its a great way to
1. Meet new people.
2. Learn.
3.audition speakers

(6)Buy from an authorised dealer only
If you want ultimate peace of mind buy only from an authorised dealer with bill and warranty.Ask where they have a service center and get all details.

(7)Look for web/internet resources

You can Search/Google for interesting articles on speakers, both general and technical.You can also get tentative/exact price's also like here in our very own and one of the greatest site "HIFIVISION.COM".

I hope the missing points in the above write-up will be covered by my fellow members/experts

Thanks

Regards:)
 
Last edited:

mandeep

Active Member
Joined
Dec 8, 2007
Messages
741
Points
43
Location
Mohali (Near Chandigarh)
AVR . ... you know some sort of a buying guide thing.... This could help newbie or others ..when they are trying to buy something for the first time.....

The Home Theater receiver, is the heart of a home theater system.

A Home Theater Receiver combines the functions of three components

1. A tuner

2. A Preamp that controls which audio/video source is selected , processes the incoming stereo/surround sound signals, and distributes audio to the channels and subwoofer output. Video from components are routed to a Display/TV.

3. A built-in Multi-channel amplifier (5.1, 6.1, or 7.1 channels) that sends the surround sound signals and power to the speakers

HOW TO DEMO A HOME THEATRE RECIEVER(Without getting much into technical jargon)

(1)Budget:-

The starting point is the amount you want to spend. Yes, its possible to get better amplifier in a limited budget also. Mostly 5.1 channel receivers are less costly than 7.1 channel receivers.

(2)Main Decision Making Factors:-

Decide accurately based on these points carefully, Take All Factors Into Consideration,:-

(a) Power Ratings (WPC):-

AV receiver, always lists the Watts-Per-Channel rating. One receiver has 50 Watts-Per-Channel (WPC), another one has 75, and still another has 100.

The more watts the better right? Not Necessarily

An amplifier with 100 WPC is twice as loud as 50 WPC right? Not exactly

An amplifier rated at 100 WPC is capable of twice the volume level of a 10 WPC amp, an amplifier rated at 100 watts per channel needs to be 1,000 watts per channel to be twice as loud. In other words, the relationship between volume and wattage output is 1 to 10 rather than 1 to 1.

Power Spec at full bandwidth, 20 Hz to 20 kHz and at 1kHz:

Full disclosure specs will show power specs over the entire 20 Hz to 20 kHz audio range . Sometimes power is spec'd only at 1 kHz, or worst. When a receiver company rates their amp at 1kHz, this usually means a full bandwidth measurement of power will be about 10-15% lower, i.e power rated 95 WPC @1Khz could be only 75-80 WPC over the entire 20 Hz to 20 kHz audio range.

(b) Distortion (THD):-.

Amount of change in harmonic content of the signal as it is amplified..It is measured in percentage terms, where the percentage represents the amount of distortion present in the audio signal at full output level. It consists of all the nonlinearities in the signal, which may or may not be harmonically related to the input signal, plus noise. A lower figure indicates less change and a more accurate amp. Most receivers are rated at 0.9% or lower,the lower the better.

You are better off with a receiver of about 50 WPC with a low distortion level than a more powerful amplifier with high Total harmonic distortion levels.

(C) Signal-To-Noise Ratio (S/N)

Another factor is Signal-To-Noise Ratio (S/N), which is ratio of sound to background noise. The larger the ratio, the more the desirable sounds (music, voice, effects) are separated from acoustical effects and background noise. In amplifier specifications S/N ratios are expressed in decibels. A S/N ratio of 100db is much more desirable that a S/N ratio of 70db.

(3)Features worth to have now a days:-

More advanced functions to consider when buying a Home Theater Receiver, such as Multi-Room Audio, iPod, Networking, and HD HDMI Audio/Video Connectivity, HD sound decoding, Matrix feature to up-mix 5.1 channel sound sources/tracks to 7.1 for 7.1 speaker setups/recievers (this feature is most sought after by many)

Deinterlacing:-

This is a process whereby video signals coming in from the Composite or S-Video inputs are converted from interlaced scan to progressive scan (480i to 480p) and then output via Component or HDMI outputs to the TV. This improves the quality of the image, making it smoother and more acceptable for display on an HDTV.

However, keep in mind that not all receivers can perform this function well.

Video Upscaling:-

In addition to deinterlacing, another level of video processing is becoming more common in home theater receivers is Upscaling. Upscaling is a function that, after the deinterlacing process is done, upscales the number of pixels to match a specific screen resolution, such as 720p, 1080i, or 1080p.

(4)Room size, etc and power required:-

How much amplifier power you need,depends largely on

(a)Speaker sensitivity:

Briefly, with the same power, a more sensitive speaker will play louder than one with less sensitivity. High sensitivity range is > 90db.

(b)Room size:

Everything else being equal, a larger room absorbs more power than a small room. That's because the speaker sound we hear is the sum total of direct and reflected sounds, and sound pressure diminishes with distance. Hence, to overcome the increased volume of a large room, an amp needs to put out more power.

(c)Listener distance.

This can be independent of room size. If you sit close to the speakers, even in a large room, you will be using less power than if you sit farther away.

(d)Your average playback level:

Average listening levels (neither background nor party but, well, normal) require less power than you may think -- the average listening level requires somewhere around 10 watts in a standard 20'L x 14'W x 9'H room.


5)Try at home

If the dealer let's you put down a deposit and try them at home,B'coz, the acoustic space in a showrom is different from your home.

(6)Take your time,there is no hurry

Audition with your own material (CD's, DVD's etc). Listen to the same songs, and movies over, and over again with the different recievers and your own set of speakers(But ensure whether your amplifier support the impdance of your speakers in ohms or not,set accordingly the setting on the amplifier to required 4ohm/6ohm/8ohm). Take your time, and have fun auditioning.

(7)Get involved with member get-togethers

Another great way is to get involved with member get-togethers.

Its a great way to

1. Meet new people.
2. Learn.
3. Audition various combination of recievers and speakers

(8)Buy from an authorised dealer only

If you want ultimate peace of mind buy only from an authorised dealer with bill and warranty.Ask where they have a service center and get all details.

(9)Look for web/internet resources

You can Search/Google for interesting articles and reviews on recievers, both general and technical.You can also get tentative/exact price's also like here in our very own and one of the greatest site "HIFIVISION.COM".

I hope the missing points in the above write-up will be covered by my fellow members/experts

Thanks

Regards:)
 

zoey

New Member
Joined
Jul 26, 2009
Messages
68
Points
0
Location
India
Good start Mandeep, but my point is these valuable suggetions\advice that are given must not be lost among the threads.... I know one can search for these things here ..... but even then I see some common quetions keep arising again and again... Like Should I go for HD or Full HD LCD..... What Should be the screen size.... Should I consider LCD or Plasma......When buying speakers\AVR some common quetions I have noticed .. what should be the speaker wire gauge... Should I got for 5.1 or 7.1 ......things like this....
 
Top