Video Asylum

TVs, VCRs, DVD players, Home Theater systems and more.

Use this form to submit comments directly to the Asylum moderators for this forum. We're particularly interested in truly outstanding posts that might be added to our FAQs.
You may also use this form to provide feedback or to call attention to messages that may be in violation of our content rules.

You must login to use this feature.

Inmate Login

By default, logging in will set a session cookie that disappears when you close your browser. Clicking on the 'Remember my Moniker & Password' below will cause a permanent 'Login Cookie' to be set.

Moniker/Username: The Name that you picked or by default, your email. Forgot Moniker?	Examples "Rapper", "Bob W", "joe@aol.com".
Password:	Forgot Password?
	Remember my Moniker & Password ( What's this?)

If you don't have an Asylum Account, you can create one by clicking Here.

Our privacy policy can be reviewed by clicking Here.

Inmate Comments

From:
Your Email:
Subject:

Message Comments

Original Message

RE: 6.1 or 7.1, is it worth doing more than 5.1?

Posted by David Aiken on December 12, 2007 at 18:55:50:
Doubling the number of speakers adds 3 dB.

2 speakers adds 3 dB to 1 speaker.
4 speakers adds 3 dB to 2 speakers.
8 speakers adds 3 dB to 4 speakers.

That assumes, of course, that there's an identical signal at identical levels going to each speaker.

With surround sound soundtracks, the dominant signal is usually the centre channel followed by the front L & R channels with the side surrounds and rear surrounds (if you have them) normally receiving a weaker signal. Adding 2 channels to an existing 5.1 system doesn't add much to the overall level, if it adds anything at all. For discs with a 6.1/7/1 channel soundtrack it probably won't add anything because the signal for the rear channels will be folded into the signal for the side surrounds if you only have a 5.1 setup. Sending it to separate rear surrounds instead of adding it to the side surrounds is not going to make a significant difference to the volume levels. If you want a significant increase in volume, you'll have to play with the volume knob.

David Aiken