To Bi-Amp or not? - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 13 Old 06-08-2012, 11:11 AM - Thread Starter
Member
 
Briandl's Avatar
 
Join Date: Nov 2006
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I have an Onkyo TX-NR609 and a pair of B&W 685's.

I've mostly seen people saying it's not worth it to bi-amp, I figured since I'm not using those other channels any way I might as well put them to good use, but what do I know. I have tried them bi-amped and they do seem louder to me, although I've never put a DB meter on them.

Any other thoughts or suggestions? I've had this setup for a while now but I need to go out and buy new speaker wire because right now I'm using some crap wire that I took from a sub 75.00 home theater in a box.

Also, I was thinking 14 or 12 gauge wire, any suggestions? The runs are actually quite short, probably 10-15 feet max each.

TIA.
Briandl is offline  
Sponsored Links
Advertisement
 
post #2 of 13 Old 06-08-2012, 12:50 PM
Senior Member
 
swizzchard's Avatar
 
Join Date: Apr 2012
Posts: 280
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 14
Quote:
Originally Posted by Briandl View Post

I have an Onkyo TX-NR609 and a pair of B&W 685's.
I've mostly seen people saying it's not worth it to bi-amp, I figured since I'm not using those other channels any way I might as well put them to good use, but what do I know. I have tried them bi-amped and they do seem louder to me, although I've never put a DB meter on them.
Any other thoughts or suggestions? I've had this setup for a while now but I need to go out and buy new speaker wire because right now I'm using some crap wire that I took from a sub 75.00 home theater in a box.
Also, I was thinking 14 or 12 gauge wire, any suggestions? The runs are actually quite short, probably 10-15 feet max each.
TIA.
The 14 is more than enough for that...and from what ive read, the science behind bi-amping is false, but if you think theres a difference (Y)! It's your own ears that matter.
swizzchard is offline  
post #3 of 13 Old 06-08-2012, 01:51 PM - Thread Starter
Member
 
Briandl's Avatar
 
Join Date: Nov 2006
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Think I should go 16 or larger?
Briandl is offline  
post #4 of 13 Old 06-08-2012, 01:51 PM
AVS Special Member
 
Bill Fitzmaurice's Avatar
 
Join Date: Nov 2009
Location: New Hampshire
Posts: 9,220
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 1173
Quote:
Originally Posted by swizzchard View Post

from what ive read, the science behind bi-amping is false.
The pseudo-science behind bi-wiring is false. Bi-amping gives very good results, but only when properly implemented. That means an electronic crossover, separate amplification for highs/lows, and most important, the elimination of the passive crossover components. If you don't do the last there's a slight improvement to be gained, but only slight.

Bill Fitzmaurice Loudspeaker Design

The Laws of Physics aren't swayed by opinion.
Bill Fitzmaurice is offline  
post #5 of 13 Old 06-08-2012, 03:27 PM - Thread Starter
Member
 
Briandl's Avatar
 
Join Date: Nov 2006
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Any other thoughts?
Briandl is offline  
post #6 of 13 Old 06-08-2012, 03:38 PM
AVS Special Member
 
beaveav's Avatar
 
Join Date: Mar 2010
Location: SoCal
Posts: 1,720
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 246
You've gotten good advice.
14 or 16ga wire should be fine.
No need to biwire or biamp, but if you want to play around with it, feel free to do so.

For every new thing I learn, I forget two things I used to know.
beaveav is offline  
post #7 of 13 Old 06-08-2012, 03:54 PM - Thread Starter
Member
 
Briandl's Avatar
 
Join Date: Nov 2006
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Yeah the thing is there's a bit of a cost difference for the wiring, so I'm leaning towards no. I do want to try it out again with the wire I have just to be sure. I could have sworn it sounded a bit better, louder, bi amped.
Briandl is offline  
post #8 of 13 Old 06-08-2012, 04:31 PM
AVS Special Member
 
beaveav's Avatar
 
Join Date: Mar 2010
Location: SoCal
Posts: 1,720
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 246
Well, if biwiring or biamping in this method is going to require you buying more speaker wire, I would no longer recommend experimenting just for the fun of it.... biggrin.gif

For every new thing I learn, I forget two things I used to know.
beaveav is offline  
post #9 of 13 Old 06-08-2012, 04:43 PM - Thread Starter
Member
 
Briandl's Avatar
 
Join Date: Nov 2006
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
Either way I need new wire, just a matter of if I'm getting cheaper double wire, or more expensive 14/4 or 16/4
Briandl is offline  
post #10 of 13 Old 06-08-2012, 04:48 PM
AVS Special Member
 
Bill Fitzmaurice's Avatar
 
Join Date: Nov 2009
Location: New Hampshire
Posts: 9,220
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Liked: 1173
Quote:
Originally Posted by Briandl View Post

I could have sworn it sounded a bit better, louder, bi amped.
What you heard was placebo effect. In any event the output level of your speakers is limited by the driver displacement, and nothing will change that.

Bill Fitzmaurice Loudspeaker Design

The Laws of Physics aren't swayed by opinion.
Bill Fitzmaurice is offline  
post #11 of 13 Old 06-08-2012, 08:13 PM
 
AJinFLA's Avatar
 
Join Date: Feb 2006
Location: Take a guess
Posts: 1,579
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 22
Quote:
Originally Posted by Briandl View Post

I could have sworn it sounded a bit better, louder, bi amped.
It is more probable that it sounded slightly "cleaner", rather than "louder" (though you could perceive it this way) when you pushed your receiver to the point of clipping, since that's the sole benefit of passive bi-amping as you have implemented it. You change the clipping spectral component distribution due to the XO legs been driven by separate output transistor banks, despite the same power supply. Not everyone can comprehend this so I'm not going to bother to explain (or "argue" as one would do with a tree or shoe) for the umpteenth time, but rather chuckle at the mired in morass of ignorance, since that feature is a tremendous source of entertainment for me on audio boards.wink.gif

cheers,

AJ
AJinFLA is offline  
post #12 of 13 Old 06-08-2012, 08:57 PM
Member
 
Pastor Jim's Avatar
 
Join Date: Dec 2011
Posts: 15
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
"Also, I was thinking 14 or 12 gauge wire, any suggestions? The runs are actually quite short, probably 10-15 feet max each."

Go with the 12 gauge.
Why just do it, when you can over do it.
Pastor Jim is offline  
post #13 of 13 Old 06-09-2012, 12:11 PM - Thread Starter
Member
 
Briandl's Avatar
 
Join Date: Nov 2006
Posts: 44
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
That's what I figured, it's not a huge price difference anyway between 16, 14, and 12.
Briandl is offline  
Reply Speakers

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