Differences between LED TV and LCD TV?

they are both LCD tvs. the "LED" part refers to the lighting.
http://reviews.cnet.com/led-tvs-review-10-things-you-need-to-know

1. An LED TV is not a new kind of TV.

I appreciate a good marketing ploy as much as the next guy, but an LED TV is just an LCD TV that's backlit with light-emitting diodes (LEDs) instead of standard cold-cathode fluorescent lights (or CCFLs). And though they became well-known last year with Samsung's ultrathin models, LED-backlit LCDs have been on mainstream store shelves since 2007, when Samsung's LN-T4681F debuted.

Unlike plasma and OLED, which are emissive technologies where each pixel is its own discrete light source, LCD is a transmissive technology where each pixel has to be illuminated from behind, or backlit.

Read more: http://reviews.cnet.com/led-tvs-review-10-things-you-need-to-know#ixzz1gZQ27WPg

 

Not sure why sound would be different between LED and LCD. The video properties and the light source used should have no effect on sound. Only thing I can think of is that LED LCD TV's are thinner than the the regular LCD's and maybe the speakers are smaller...

 

I hate seeing reviews about a TVs sounds... If you shell out more than 1200 dollars, you should have a sound system to match...
pet peeve of mine

 

Yeah, first thing I purchased after the tv was a receiver and speakers.

 

Some people are buying TVs for rooms other than their livingroom/den, so sound can be important. I like in a 950 square foot condo and have 3 large TVs, but only one is connected to a sound system. I made sure the TVs in my bedroom and loft had good speakers built-in.

 

Tinny how is OLED coming along, the last I heard they had difficulty making larger screens with it.

I can't wait to get an OLED 40+" TV that folds up into a architectual type of tube, and take it on the road with me for gaming.

DD

 

you have 3 large TVs in a 950 sq ft loft?

lol

 

Since we are talking TV’s what’s a good gaming TV? I was told to avoid 60hz TV’s and go for a 120hz but now I see they have tv’s with more Hz. What should I get?

 

I heard Samsung and LG will show off 55 inch OLEDs at CES.

I think they are primarily used in small displays like smart phones.

 

It's 2011. This gadget is INSANE!

 

it's not about refresh rate.
look at input lag rate. you have to do research on the tv you are looking at.

i'm running on a panasonic plasma, very low lag for MW.