Quote:
Originally Posted by
carpboy 
Is there a good primer anywhere on what and how current audio components work and what is available? I am massively upgrading from an old crappy Sony HTiB, and I don't know any of this stuff.
For instance, why do I need a receiver w/ HDMI inputs?
My use will be almost exclusively video, minimal music playing.
Thanks.
The very first thing you want to find out is will your HTIB receiver work with your TV?
Believe it or not due to some manufacturers poor implimentation of the spec and just general problems you may find that HDMI may not work for you
now with that out of the way
different types of audio connections available on current consuemer receivers (new to old)
Inputs
1.
HDMI. Typically 2-4
2.
SPDIF. (coax 75ohm RCA plug) typically 1 or 2.
2.
OPTICAL. (tosslink) typically 1 or 2
3.
RCA Multiple L+R on average plus 1 set of multi channel like 5.1 or 7.1, etc)
4.
Phonograph. RCA jack for turntable input.
5.
Tape Not so common RCA input
6.
VCR Not so common RCA input
7.
DTV or CABLE starting to fade away
* inputs 5-7 are typically called AV inputs nowadays
Typical outputs
HDMI. Typically used for audio return channel and to pass video (processed or unprocessed) usually 1 output but some receivers have 2 or more (read more expensive)
Pre-out. (RCA) typically 1 set matching the receiver ie 7.1 receiver should have 7.1 preouts. Commonly found on mid level receivers and up.
Speaker. (binding post) anywhere from 2 to 11 typically, common is 5 or 7
Subwoofer out. Goes to a powered sub of your choice
Monitor out (RCA line level outputs)
I know you did not ask about video but here goes
HDMI Newest standard
Component Analog video inputs that are artificially limited to 1080i on the blu-ray players but can handle 1080p and beyond. (VGA is an example of component video)
S-video Older standard for analog video that offered upwards of 500 lines of resolution
Composite slightly better than RF
RF Modulation typically not found on receivers but is common on VCRs and older game consoles