Pre-amp out? what is this? - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 15 Old 07-13-2010, 07:11 PM - Thread Starter
Member
 
Se7enwolf's Avatar
 
Join Date: Apr 2009
Posts: 81
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
the new receiver I'm getting has Multichannel hook ups in back with one sub connection and it has Pre-Amp out with 2 subwoofer connections. What is Pre-amp out?

If I'm hooking up speakers with the bare wire connections, which one do I use to connect the subwoofer if the subwoofer uses a coax connection? by the way, my subwoofer is a power subwoofer
Se7enwolf is offline  
Sponsored Links
Advertisement
 
post #2 of 15 Old 07-13-2010, 07:32 PM
AVS Addicted Member
 
Kal Rubinson's Avatar
 
Join Date: Mar 2004
Location: NYC + Connecticut
Posts: 28,428
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 61 Post(s)
Liked: 126
In general, the multichannel "hook ups" are inputs for use with certain players. The preamp outputs, including those for the subs, are used to power external amplifiers, including powered subs.

So, connect your sub to one of the 2 sub outputs. The user's manual should tell you if there is a difference between them.

It would help if you told us what model AVR you are referring to.

Kal Rubinson

"Music in the Round"
Senior Contributing Editor, Stereophile
http://www.stereophile.com/category/music-round

Kal Rubinson is offline  
post #3 of 15 Old 07-13-2010, 07:35 PM
AVS Club Gold
 
schroedk's Avatar
 
Join Date: Apr 2006
Location: Rushville, IL
Posts: 2,162
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 20
Pre-amp outs are line-level RCA connections for connecting the receiver to an outboard amplifier, and using the receiver as a pre/processor. It's a way to keep what you've got if you decide that you need more power for hard-to-drive speakers, or simply want more headroom in your system. When you connect the pre-amp outs to an amplifier, it bypasses the receivers internal amplifiers, taking some of the load off of the receiver.

With a powered subwoofer, you would simply run an RCA cable from one of the pre-amp outs designated "subwoofer" to the LFE input on your subwoofer. If you already have a coax cable run in place, you can get a pair of these adapters: http://www.radioshack.com/product/in...tId=2103580&cp to convert the coax ends into RCA ends.

Two things are infinite: the universe and human stupidity. And I'm not sure about the universe. -- Albert Einstein
schroedk is offline  
post #4 of 15 Old 07-13-2010, 07:36 PM
AVS Club Gold
 
schroedk's Avatar
 
Join Date: Apr 2006
Location: Rushville, IL
Posts: 2,162
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 20
Hi, Kal. As usual, you're quick on the draw

Two things are infinite: the universe and human stupidity. And I'm not sure about the universe. -- Albert Einstein
schroedk is offline  
post #5 of 15 Old 07-14-2010, 01:09 PM - Thread Starter
Member
 
Se7enwolf's Avatar
 
Join Date: Apr 2009
Posts: 81
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I'll be getting the YAMAHA RX-V765.

You say connect it by RCA but it looks like a coaxial connection to me, the same thing my current Onkyo 606 has that my sub is connected to. maybe i'm misunderstanding something.

Though I get that I should plug my sub into one of the pre-out connections. Thanks. I would have hooked it up to the multichannel one if I wouldn't have asked.
Se7enwolf is offline  
post #6 of 15 Old 07-14-2010, 01:26 PM
585-645-1006
 
jdsmoothie's Avatar
 
Join Date: Sep 2007
Location: Orlando, FL
Posts: 43,892
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 755 Post(s)
Liked: 1418
The multi channel analog inputs are generally for connecting a DVD or BDP via analog cables vice an HDMI or other digital cable. These are especially useful with older AVRs that don't have an HDMI input but the user still wants to pass the HD audio to the AVR.

As noted the pre-amp outputs must be connected to some type of amp or power source. Your sub is powered and therefore has it's own power. In your Yammy's case, you have (2) sub outputs that can be used to connect 2 separate subs. The sub pre-out can be connected with either a video composite RCA cable or digital coax cable, although sounds like you've already got the sub cable.

---------------------------------
"JD" – jd@avscience.com ; shop.avscience.com ; 585-645-1006, AVScience - Authorized dealer for AV Gear 
Mon - Fri: 8am – 8pm EST (Sat/Sun too, will return call if I don't pick up)
Call for pricing on Denon, Marantz, Yamaha, Onkyo, Klipsch, Def Tech, Atlantic Tech
** Think the AVR is defective?  Reset the microprocessor 4-5 times. 
jdsmoothie is online now  
post #7 of 15 Old 07-14-2010, 01:34 PM
AVS Special Member
 
phantom52's Avatar
 
Join Date: Dec 2004
Location: TX
Posts: 7,085
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Liked: 83
Quote:
Originally Posted by Se7enwolf View Post

I'll be getting the YAMAHA RX-V765.

You say connect it by RCA but it looks like a coaxial connection to me, the same thing my current Onkyo 606 has that my sub is connected to. maybe i'm misunderstanding something.

Though I get that I should plug my sub into one of the pre-out connections. Thanks. I would have hooked it up to the multichannel one if I wouldn't have asked.

A RCA connection is a coaxial type of connection. You will be connecting your sub to one of the pre-outs marked sub. The other pre-outs are for connecting an additional amp if you should want to in the future as Kal and others have pointed out.
phantom52 is online now  
post #8 of 15 Old 07-14-2010, 01:39 PM
AVS Addicted Member
 
MichaelJHuman's Avatar
 
Join Date: Nov 2006
Location: Colorado Springs, CO
Posts: 18,773
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 169 Post(s)
Liked: 99
Quote:
Originally Posted by Se7enwolf View Post

I'll be getting the YAMAHA RX-V765.

You say connect it by RCA but it looks like a coaxial connection to me, the same thing my current Onkyo 606 has that my sub is connected to. maybe i'm misunderstanding something.

Though I get that I should plug my sub into one of the pre-out connections. Thanks. I would have hooked it up to the multichannel one if I wouldn't have asked.

I would call RCA a coaxial connection. But people usually say RCA when they mean an RCA plug terminated cable (RCA plugs originating as a phono connector and named for the company.) RCA terminated connections are used for many purposes such as line level analog audio, digital audio, and video.

Coaxial used without a context is often used to refer to RG-58 or similar cables.

In this case, the subwoofer output jack is designed for RCA terminated cables just like those freebie red/white cables, but it's mono.

Any RCA terminated cable would work.

The important thing is to not confuse the subwoofer OUTPUT with the subwoofer input grouped with the other multi-channel inputs. This is all to easy to do when wiring with limited light in tight confines (done it myself.)

"But this one goes up to 11"
MichaelJHuman is offline  
post #9 of 15 Old 07-14-2010, 02:10 PM - Thread Starter
Member
 
Se7enwolf's Avatar
 
Join Date: Apr 2009
Posts: 81
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
ok thanks guys.

one last question. Which gives a better connection? a bare wire connection for the speakers or banana connectors?
Se7enwolf is offline  
post #10 of 15 Old 07-14-2010, 02:14 PM
AVS Special Member
 
phantom52's Avatar
 
Join Date: Dec 2004
Location: TX
Posts: 7,085
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Liked: 83
Quote:
Originally Posted by Se7enwolf View Post

ok thanks guys.

one last question. Which gives a better connection? a bare wire connection for the speakers or banana connectors?

I prefer banana, but only because I'm always doing something to my setup and its just more convenient to me. Good banana connectors at Monoprice.com.
phantom52 is online now  
post #11 of 15 Old 07-14-2010, 02:39 PM - Thread Starter
Member
 
Se7enwolf's Avatar
 
Join Date: Apr 2009
Posts: 81
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Quote:
Originally Posted by phantom52 View Post

I prefer banana, but only because I'm always doing something to my setup and its just more convenient to me. Good banana connectors at Monoprice.com.

does the sound quality differ?
Se7enwolf is offline  
post #12 of 15 Old 07-14-2010, 02:48 PM
AVS Special Member
 
phantom52's Avatar
 
Join Date: Dec 2004
Location: TX
Posts: 7,085
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 27 Post(s)
Liked: 83
Quote:
Originally Posted by Se7enwolf View Post

does the sound quality differ?

No. It's just more convenient. Also less chances of a stray wire touching another speaker post. No change in sound quality with any of the connections IMO.
phantom52 is online now  
post #13 of 15 Old 07-15-2010, 10:07 AM
AVS Addicted Member
 
Kal Rubinson's Avatar
 
Join Date: Mar 2004
Location: NYC + Connecticut
Posts: 28,428
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 61 Post(s)
Liked: 126
Quote:
Originally Posted by Se7enwolf View Post

I'll be getting the YAMAHA RX-V765.

You say connect it by RCA but it looks like a coaxial connection to me, the same thing my current Onkyo 606 has that my sub is connected to. maybe i'm misunderstanding something.

The RCA connection is used for coaxial audio connections, analog and digital.

Kal Rubinson

"Music in the Round"
Senior Contributing Editor, Stereophile
http://www.stereophile.com/category/music-round

Kal Rubinson is offline  
post #14 of 15 Old 07-15-2010, 10:13 AM
AVS Addicted Member
 
MichaelJHuman's Avatar
 
Join Date: Nov 2006
Location: Colorado Springs, CO
Posts: 18,773
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 169 Post(s)
Liked: 99
Quote:
Originally Posted by Kal Rubinson View Post

The RCA connection is used for coaxial audio connections, analog and digital.

And composite/component video.

It's been conveniently overused

"But this one goes up to 11"
MichaelJHuman is offline  
post #15 of 15 Old 07-15-2010, 10:20 AM
AVS Addicted Member
 
Kal Rubinson's Avatar
 
Join Date: Mar 2004
Location: NYC + Connecticut
Posts: 28,428
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 61 Post(s)
Liked: 126
Quote:
Originally Posted by MichaelJHuman View Post

And composite/component video.

It's been conveniently overused

In a cinch!

Kal Rubinson

"Music in the Round"
Senior Contributing Editor, Stereophile
http://www.stereophile.com/category/music-round

Kal Rubinson is offline  
Reply Receivers, Amps, and Processors

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