Cable TV Distribution Amplifier - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 6 Old 11-06-2012, 05:49 PM - Thread Starter
Advanced Member
 
mfrey0118's Avatar
 
Join Date: Mar 2011
Posts: 692
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 20
Came across one during an estate clean out. I have no idea if amplifying my cable signal is something that would improve PQ at all. I've never owned one and I have no experience with them.

I have Comcast Xfinity.

Any input is appreciated.

60" 1080p 3D Plasma Panel
3D 1080p Blu-Ray player
4K 7.2 Channel AVR

mfrey0118 is offline  
Sponsored Links
Advertisement
 
post #2 of 6 Old 11-06-2012, 07:34 PM
AVS Special Member
 
jautor's Avatar
 
Join Date: Jun 2001
Location: Houston, TX
Posts: 7,896
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 177 Post(s)
Liked: 359
For digital channels or HDTV channels, unless you're experiencing drop-outs (picture freezes or macroblocking), it won't do anything for picture quality.

Jeff


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
 -- CIH, Panamorph, Martin Logan, SVS PB2000, Carada Masquerade, Grafik Eye, Bar table, Green Glue, JVC RS50 
Theater build photos:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

jautor is offline  
post #3 of 6 Old 11-07-2012, 09:33 AM
AVS Special Member
 
egnlsn's Avatar
 
Join Date: May 2007
Location: Taylorsville, UT
Posts: 2,230
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Liked: 31
It might actually cause problems that jautor mentioned. Too much signal is just as bad as too little.

CIAO!

Ed N.
egnlsn is offline  
post #4 of 6 Old 11-07-2012, 10:18 AM - Thread Starter
Advanced Member
 
mfrey0118's Avatar
 
Join Date: Mar 2011
Posts: 692
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 20
Quote:
Originally Posted by jautor View Post

For digital channels or HDTV channels, unless you're experiencing drop-outs (picture freezes or macroblocking), it won't do anything for picture quality.
Jeff

What's macroblocking? The image breaking down into big square blocks during bright fast motion scenes on a 1080i signal? I have that.
Quote:
Originally Posted by egnlsn View Post

It might actually cause problems that jautor mentioned. Too much signal is just as bad as too little.

This amp has an adjustable gain.

60" 1080p 3D Plasma Panel
3D 1080p Blu-Ray player
4K 7.2 Channel AVR

mfrey0118 is offline  
post #5 of 6 Old 11-07-2012, 11:02 AM
AVS Special Member
 
jautor's Avatar
 
Join Date: Jun 2001
Location: Houston, TX
Posts: 7,896
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Quoted: 177 Post(s)
Liked: 359
Quote:
Originally Posted by mfrey0118 View Post

What's macroblocking? The image breaking down into big square blocks during bright fast motion scenes on a 1080i signal? I have that.

Yes, but if it's happening on fast motion only, it may just be the limits of the broadcast you're receiving. Dropouts from weak signals will appear as blocks of the wrong colors, garbled areas of the screen and so forth.
Quote:
This amp has an adjustable gain.

If your set-top box has a diags screen that can show the signal strength, go by that. You could insert the amp at the lowest gain, and raise it. As long as you don't overdrive the signal as egnlsn mentions, it won't hurt anything. But unless you're getting dropouts/blocking due to a weak signal, it won't help either.

Since you already bought the amp, go ahead and insert it, see what you get. But do keep the gain on the low side - you should shoot for a +3-6dB gain after accounting for your splitter losses.

Jeff
egnlsn and mfrey0118 like this.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
 -- CIH, Panamorph, Martin Logan, SVS PB2000, Carada Masquerade, Grafik Eye, Bar table, Green Glue, JVC RS50 
Theater build photos:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

jautor is offline  
post #6 of 6 Old 11-08-2012, 05:43 AM - Thread Starter
Advanced Member
 
mfrey0118's Avatar
 
Join Date: Mar 2011
Posts: 692
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 20
Cool, thanks for the info.

60" 1080p 3D Plasma Panel
3D 1080p Blu-Ray player
4K 7.2 Channel AVR

mfrey0118 is offline  
Reply Home A/V Distribution

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off