Jump to content



Sign up for a free account to remove the pop-up ads

Signing up for an account is fast and free. As a member you can join in the conversation, enter contests and remove the pop-up ads that guests get. Click here to create your free account.


Photo
- - - - -

4 ohm speakers


  • You cannot start a new topic
  • Please log in to reply
11 replies to this topic

#1 of 12 OFFLINE   Lance.G

Lance.G

    Extra



  • 20 posts
  • Join Date: Jan 04 2006

Posted January 08 2006 - 04:22 AM

Hi. My HTiB has 8 ohm surround speakers and 4 ohm front and center speakers. Number one, I thought 4 ohm was for car auido. Whats the deal with that? Number two, is it hard to find 4ohm home theater speakers? Anyone know any sites that I can find them at? Thanks in advance.

#2 of 12 OFFLINE   ChrisWiggles

ChrisWiggles

    Producer



  • 4,791 posts
  • Join Date: Aug 19 2002

Posted January 08 2006 - 05:24 AM

Speakers have various nominal impedance ratings, and furthermore they have wildly varying impedance curves varying with the signal. the higher the impedance, the less current strain on the amp. In any case, why are you searching for 4ohm theater speakers? There are many attributes to a speaker, the impedance can relate to how much amplifier power you may need (along with sensitivity), the lower the impedance the more amp capabilities you will need generally speaking.

#3 of 12 OFFLINE   Lance.G

Lance.G

    Extra



  • 20 posts
  • Join Date: Jan 04 2006

Posted January 08 2006 - 10:57 AM

The amp says that the connections for the center and front are 4 ohms. Do I have to get 4ohm speakers or will 8ohms work with it? Please corect me if I'm wrong, but if I connect an 8ohm speaker to a amp that outputs 100 wats per chanel at 4ohm, wouldn't that cut the wattage in half and only put out 50 wats to that 8ohm speaker?

#4 of 12 OFFLINE   ChrisWiggles

ChrisWiggles

    Producer



  • 4,791 posts
  • Join Date: Aug 19 2002

Posted January 08 2006 - 11:57 AM

1) no, 8ohm should work fine. 2) correct. This reduces current strain on the amplifier at a given gain setting.

#5 of 12 OFFLINE   Lance.G

Lance.G

    Extra



  • 20 posts
  • Join Date: Jan 04 2006

Posted January 08 2006 - 02:27 PM

Ok. Well, my reciever is rated for 4 ohms for those speakers, so, can anyone tell me where to get decent 4 ohm home theater speakers?

#6 of 12 OFFLINE   ChrisWiggles

ChrisWiggles

    Producer



  • 4,791 posts
  • Join Date: Aug 19 2002

Posted January 08 2006 - 02:39 PM

You don't need to get 4ohm speakers, as I said above in response to your question:


#7 of 12 OFFLINE   AlanZ

AlanZ

    Screenwriter



  • 1,335 posts
  • Join Date: Sep 15 2002

Posted January 08 2006 - 02:44 PM

Dude, just focus on finding speakers that sound good to you....

Hey Chris, do you think he can go with 8ohm, too? Will those work? Posted Image
"Come on you Fockers....CONGA!!!"
-Dustin Hoffman as 'Bernie Focker'

Updated Equipment List

#8 of 12 OFFLINE   Lance.G

Lance.G

    Extra



  • 20 posts
  • Join Date: Jan 04 2006

Posted January 08 2006 - 03:07 PM

I KNOW that 8 ohm will work, but I dont want to cut the wattage in half for those speakers, thats why I was looking for 4 ohm.

#9 of 12 OFFLINE   Randy C Sr

Randy C Sr

    Stunt Coordinator



  • 51 posts
  • Join Date: Oct 03 2004

Posted January 08 2006 - 04:04 PM

It is true that the system will not play as loud with the 8 ohm speakers, but what Chris is saying to you is true. The impedance rating of speakers is a norminal (average) of the impedance range. You may hear a difference in loudness but only slight. Remember for you to hear a difference in volume the power has to double or in your case be halved. A good quality speaker and you won't even miss anything.

#10 of 12 OFFLINE   ChrisWiggles

ChrisWiggles

    Producer



  • 4,791 posts
  • Join Date: Aug 19 2002

Posted January 08 2006 - 04:35 PM

No it isn't, the loudness is described by the sensitivity, not the impedance I think you'll find that in general, 4ohm speakers are often less sensitive, and they are also more rare in high-end speakers and relatively difficult to drive. My 4-ohm dynaudios have lower sensitivity, and significantly lower dB SPL at the same amplifier gain setting. The take-home lesson is that you want adequate power for given speakers, and low-impedance, low-sensitivity speakers will demand a lot more stable and capable amplifiers than relatively high impedance, high-sensitivity speakers. The bottom line is to buy the right speakers sound-wise, and provide adequate power for them and their intended use.

#11 of 12 OFFLINE   DavidSGT

DavidSGT

    Stunt Coordinator



  • 74 posts
  • Join Date: Jan 05 2006

Posted January 08 2006 - 06:36 PM

Hiya LanceG, If it sounds good to your ears, does it really matter if it is 8,6,4 or 2 ohms. FWIW, I run an old Paradigm 11 semk2 rated 4 ohms thru a Panasonic xr30(stated to run only until 6 ohm speakers) and it can go pretty loud and still be sweet, with no problems at all. Regards. David SGT

#12 of 12 OFFLINE   Lance.G

Lance.G

    Extra



  • 20 posts
  • Join Date: Jan 04 2006

Posted January 09 2006 - 02:27 AM

Ok, thanks for all the help.




0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users