REW cabling connection question - Home Theater Forum and Systems - HomeTheaterShack.com

 
Thread Tools
post #1 of 8 Old 02-09-14, 03:23 PM Thread Starter
TEK
Shackster
 
Join Date: Jan 2011
Posts: 27
REW cabling connection question

Sorry, I assume I should understand this - but I don't. Could somebody please give me a hint so I can understand why I don't get this?

The attached image is from the REW Cabling and connection thread.
From what I understand REW only output stereo channel sound. But if I connect my system as suggested, and I feed a stereo channel signal into my receiver (A Marantz SR 7005) feed from a HTPC, then I will only get a signal out through the subwoofer if my mains are set to small, and then I will get the signal that the receiver is feeding to the sub as well as what is being feed to the mains. I can of course disconnect the mains, but still the receiver will affect what is sent to the mains and what is sent to the sub because it will apply its crossover filter.
If I say that the receiver should not assume that the speakers is small, then no output will go to the sub.

So - is there something missing in the drawing, or am I just thinking about this the wrong way around? If I connect my system like this, how would I then get the signal to the sub without the receiver affecting the signal? (and I do not want the receiver to affect my signal as I'm attempting to get information about how the sub alone is working in the room).

Any help is appreciated.
Attached Thumbnails
REW cabling connection question-rew-20connection-20usb-20soundcard.jpg  

TEK is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old 02-09-14, 06:55 PM
HTS Senior Moderator
 
Wayne A. Pflughaupt's Avatar
 
Join Date: Apr 2006
Location: Corpus Christi, Texas
Posts: 9,177
Send a message via Yahoo to Wayne A. Pflughaupt
Re: Dumb noob question


REW’s output is mono, that’s why the picture show a “y” splitter to get the signal into both channels of your receiver’s input. As long as you have the subwoofer enabled in your receiver, the signal will pass to it.

Regards,
Wayne



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.
|
To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

Wayne A. Pflughaupt is offline  
post #3 of 8 Old 02-10-14, 12:38 AM Thread Starter
TEK
Shackster
 
Join Date: Jan 2011
Posts: 27
Re: REW cabling connection question

Isn't that only if my mains is set to small, and then the receiver will use it's crossover to send something to the mains and something to the sub?

If I disconnect both speakers and connect pre out from one of the speakers to the sub LFE imput, then I would get the whole signal to the sub.
Or I guess that I could use the first option, but disconnect the speakers and let the receiver work as the hi-frequency filter. The problem is that I'm not sure if I'm able to do that and bypass the receivers eq settings at the same time.

Everything would have been so much easier if REW supported the ability to send the signal to a given output channel....
TEK is offline  
 
post #4 of 8 Old 02-10-14, 12:21 PM
HTS Senior Moderator
 
Wayne A. Pflughaupt's Avatar
 
Join Date: Apr 2006
Location: Corpus Christi, Texas
Posts: 9,177
Send a message via Yahoo to Wayne A. Pflughaupt
Re: REW cabling connection question


Quote:
TEK wrote: View Post
Isn't that only if my mains is set to small, and then the receiver will use it's crossover to send something to the mains and something to the sub?
Yes.


Quote:
TEK wrote: View Post
If I disconnect both speakers and connect pre out from one of the speakers to the sub LFE imput, then I would get the whole signal to the sub.
The sub only generates low frequcencies; there’s no reason to send it a full-range signal.

However you have your receiver set up for your actual day-to-day use will work for REW, assuming you have the subwoofer enabled. Just set the receiver for “Stereo” or “Direct” mode. You will probably want to disable the receiver’s sub EQ; that way you can compare readings with and without equalization.

Regards,
Wayne



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.
|
To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

Wayne A. Pflughaupt is offline  
post #5 of 8 Old 02-10-14, 12:37 PM Thread Starter
TEK
Shackster
 
Join Date: Jan 2011
Posts: 27
Re: REW cabling connection question

Ok, thanks for the input Wayne.
I tought the result I got was that my receiver did not send anything to the sub when Direct was selected - but I'll test it again.
TEK is offline  
post #6 of 8 Old 02-11-14, 09:44 AM
HTS Senior Moderator
 
Wayne A. Pflughaupt's Avatar
 
Join Date: Apr 2006
Location: Corpus Christi, Texas
Posts: 9,177
Send a message via Yahoo to Wayne A. Pflughaupt
Re: REW cabling connection question


True, it might not pass the sub signal in Direct mode – didn’t think about that. However, a basic “Stereo” mode should work. If not that, then Dolby Pro Logic will for sure.

Regards,
Wayne



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.



To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.
|
To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

Wayne A. Pflughaupt is offline  
post #7 of 8 Old 02-11-14, 10:05 AM
Senior Shackster
 
Join Date: Feb 2013
Location: Sydney AU
Posts: 134
Re: REW cabling connection question

Quote:
TEK wrote: View Post
I do not want the receiver to affect my signal as I'm attempting to get information about how the sub alone is working in the room
Hi, in that case why not just bypass the receiver and connect the soundcard output to the subwoofer input?
HifiZine is offline  
post #8 of 8 Old 02-11-14, 10:06 AM Thread Starter
TEK
Shackster
 
Join Date: Jan 2011
Posts: 27
Re: REW cabling connection question

I did not want the receivers EQ to mess with my initial measurements.
However, I did - after quite some trial and error - succeded in getting the Asio4all driver (at least probably good enough for this usage). This means that I'm able to pass a signal directly to the LFE channel.
TEK is offline  
Reply

Bookmarks

Tags
dumb , noob , question

Quick Reply
Message:
Options

Register Now




PLEASE COMPLETE ALL REQUIRED FIELDS BELOW... THANKS!

REQUIRED FIELDS ON THIS PAGE
YOU MUST COMPLETE ALL OF THESE

Username
Password
Confirm Password
Email Address
Confirm Email Address
Random Question
Random Question #2




User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
PLEASE READ BELOW PRIOR TO ENTERING AN EMAIL ADDRESS!

ATTENTION!

YOU MUST ACTIVATE YOUR ACCOUNT!

Activation requires you reply to an email we will send you after you register... if you do not reply to this email, you will not be able to view certain areas of the forum or certain images... nor will you be able download software.

AN INVALID EMAIL ADDRESS WILL CAUSE YOUR ACCOUNT TO BE DELETED!

See our banned email list here: Banned Email List

We DO NOT respond to spamcop, boxtrapper and spamblocker emails... please add @hometheatershack DOT com to your whitelist prior to registering or you will get nowhere on your registration.


Email Address:
OR

Log-in










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



Posting Rules  
You may post new threads
You may 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 is not allowed!
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


For the best viewing experience please update your browser to Google Chrome