Install related Need a car audio install related question answered? Have a tip you want to share, post in here!

Infinity 611A connection help

Thread Tools
 
Search this Thread
 
Old Aug 30, 2008 | 01:13 PM
  #1  
John__Taylor's Avatar
Thread Starter
50 Watt CAFz'r
iTrader: (3)
 
Joined: Aug 2008
Posts: 483
Infinity 611A connection help

I'm just a bit confused here. Current setup (with a different amp) is a pair of 122.7 subs, parallel, bridged, 600rms total, 2 channel amp.

I'm considering a 611A amp and want to get the most out of it (657rms at 2 ohms) but I notice it has 2 sub connections which confuses me a little.

I can get 2 ohms from the subs by setting the switch to 4 ohms and doing parallel, or 1 ohm and doing series, but would that work with this amp? If so, would I have to bridge it, or just use one of the connections on the amp?

Thank you very much

John
Old Aug 30, 2008 | 04:52 PM
  #2  
godzilla1978's Avatar
50 Watt CAFz'r
 
Joined: May 2007
Posts: 384
the amp is bridged internally so just hook up the subs in parallel to the amp. as long as they're 4ohms each you'll be ok.
Old Aug 30, 2008 | 05:15 PM
  #3  
John__Taylor's Avatar
Thread Starter
50 Watt CAFz'r
iTrader: (3)
 
Joined: Aug 2008
Posts: 483
Ok, thanks.
Old Aug 30, 2008 | 05:26 PM
  #4  
John__Taylor's Avatar
Thread Starter
50 Watt CAFz'r
iTrader: (3)
 
Joined: Aug 2008
Posts: 483
Ok, thanks.

Edit: That will give me the full 657rms divided between the two subs correct?

Darn, too bad there isnt a used one in the for sale forums because now I know it will work, I will buy it.

Cheers

John
Old Aug 31, 2008 | 02:04 AM
  #5  
godzilla1978's Avatar
50 Watt CAFz'r
 
Joined: May 2007
Posts: 384
yes all 600+ watts. not a bad amp for the money really.
Old Sep 1, 2008 | 11:44 PM
  #6  
John__Taylor's Avatar
Thread Starter
50 Watt CAFz'r
iTrader: (3)
 
Joined: Aug 2008
Posts: 483
I went with this Sony instead:




XMGTR6001

Again though, the amp is wired in parallel internally according to the manual and minimum imp. is 4-ohm subs when using both connectors. Looks like the amp "sees" a 2-ohm load and gives me my full 900 watts rms that way.

The 122.7's are rated for 350 watts rms each, so I guess 900/2 will do the trick
Old Sep 2, 2008 | 01:06 AM
  #7  
godzilla1978's Avatar
50 Watt CAFz'r
 
Joined: May 2007
Posts: 384
you should have gone with the infinity. That sony amp does not make 900watts. I have experience with both and the infinity is louder,more reliable, and cheaper.
Old Sep 2, 2008 | 02:34 AM
  #8  
John__Taylor's Avatar
Thread Starter
50 Watt CAFz'r
iTrader: (3)
 
Joined: Aug 2008
Posts: 483
Originally Posted by godzilla1978
you should have gone with the infinity. That sony amp does not make 900watts. I have experience with both and the infinity is louder,more reliable, and cheaper.
Well, FWIW, here are the amp specs:

SONY XM-GTR 6001
1,300 watts max output (uh huh )
mono car amp
Class D
600 watts RMS x 1 @ 4 ohms
900 watts x 1 RMS @ 2 ohms
bass boost (10 dB @ 40 Hz)
Built-In low pass crossover (50-300 HZ)
12 or 24 dB selectable Xover slope
Gold plated termiunals
MOS-FET power supply
CEA-2006 compliant
5-300 HZ frequency response
Fuse Rating: 3 x 30 amps
preamp- and speaker-level inputs
15-7/8"W x 2-1/5"H x 10.8"D

I paid $174.00 before tax at BB. They have an online sale, same as FS. Currently they want $269.00 for the Infinity.

FS was supposed to have 30% off the Infinity and I was waiting all weekend for the website to allow it, but it never showed up.

Obviously I cant purchase both to compare, but I have no reason to doubt you.

Cheers

John
Old Sep 2, 2008 | 11:32 AM
  #9  
godzilla1978's Avatar
50 Watt CAFz'r
 
Joined: May 2007
Posts: 384
sony amp http://www.sonystyle.ca/commerce/servlet/ProductDetailDisplay?storeId=10001&catalogId=10001 &langId=-1&productId=1004868

Infinity amp http://manuals.harman.com/INF/CAR/Owner%27s%20Manual/REF_AMP_OM_rev_10_19_06.pdf

The infinity is just better. I've heard both amps the same subs, and the infinity makes more power in your car than the sony. basically they(cea 2006) test power at 14.4v and very few cars operate at that voltage. A more realistic voltage is 13.0-13.5. If you check the link above for the sony amp they say it will make 900rms with a current draw of 98amps only problem is that it is fused at 90. they're giving perfect world numbers where the infinity gives closer to real world numbers. You can do both and still be cea compliant.The sony amp will make 900 rms watts if lightning hits it! We also have to keep in mind the price you paid for it though. $180 bucks for an amp is not that bad, and if it makes you happy then enjoy it!
Old Sep 2, 2008 | 01:06 PM
  #10  
John__Taylor's Avatar
Thread Starter
50 Watt CAFz'r
iTrader: (3)
 
Joined: Aug 2008
Posts: 483
So did you phone BB on me or what?

They cancelled my fcsking order. Yes, cancelled. I was all ready to go pick it up today. I got pissed off and phoned, he said the computer was incorrect and there really wasnt one in stock.

Said to myself, ok, we'll just ship it. Price is back to normal now.

Guess Im being told in more ways than one to get the darn Infinity, heh.

Nice catch on the 90/98, makes perfect sense to me. I also agree 100% on the amp output, 14v is about the best you're gonna get, more like 13.8.

Cheers!

John

Meh, Sony and thier rootkits anway.

Last edited by John__Taylor; Sep 2, 2008 at 01:12 PM.



All times are GMT -5. The time now is 06:39 AM.