High Def Forum
Thank you for visiting. This is our website archive. Please visit our main website by clicking the logo above.

need help please 8ohm vs 6ohm

patrickf0345
10-03-2009, 12:36 AM
ok i have a problem i own a yamaha rx-v465 an a set of 5 yahama speakers that are 6ohm the rx-v465 can switch to 8 or 6 the prob that i have is that i just got a pair of klipsch quintet iii that i want to add to the front left an right replacing the yamahas my amp is set to 6 but the klipsch say that there 8 ohms compatible so whats that mean can i safely run them on 6 or do i have to wait till i get all 8ohm speakers an switch my amp to 8

Loves2Watch
10-03-2009, 01:20 AM
You need to run either all 6 Ohm or 8 Ohm speakers, not any mix of them as it will cause problems for the receiver and/or potential failure.

PFC5
10-03-2009, 05:41 AM
I believe in the manual for the Yamaha receivers they say if you mix them to use 8 ohm setting, but I would generally think that you would want all speakers to have matched impedance like L2W stated.

I actually had a 6.1 Klipsch speaker setup with my Yamaha receiver and added the two Yamaha speakers from the original HTiB system I had which were 6 ohm and used them as the front "B" channel speakers set up high above the front main speakers as additional "presence speakers" and had no problem for a few years doing this. Of course I was doing it opposite and had most as highly efficient Klipsch 8 ohm speakers and only two 6 ohm speakers in that setup, so YMMV.

patrickf0345
10-04-2009, 05:00 PM
Thanks guys this info has been great i guess i will just have to wait till i get my klipsch b3 bookshelfs to complete the klipsch switch any advice on running multi subwoofers as of now i have two klipsch 10" Synergy subs one for each of my front channels and one klipsch 12" Synergy for my LFE should i keep the crossover freguencies the same for all or keep the 10's for mid low and the 12 for low

eiger
10-07-2009, 03:43 PM
Depends on what speakers we're talking about.

For example if your fronts are 8ohm and your receiver has specs that say something like 6-16 impedence, you should make sure your fronts fall in this range.

HOWEVER - If you had 4 Ohm surround speakers, it's not a big deal. Sure you are utilzing more current, but you are VERY unlikely to overheat the AVR or cause any type of failure given you are unlikely to power surrounds at those levels for sustained periods of time. People do it all the time.

Loves2Watch
10-07-2009, 10:03 PM
Depends on what speakers we're talking about.

For example if your fronts are 8ohm and your receiver has specs that say something like 6-16 impedence, you should make sure your fronts fall in this range.

HOWEVER - If you had 4 Ohm surround speakers, it's not a big deal. Sure you are utilzing more current, but you are VERY unlikely to overheat the AVR or cause any type of failure given you are unlikely to power surrounds at those levels for sustained periods of time. People do it all the time.

That all depends. Other people do this with dire consequences almost immediately. Each situation is different but it is recommended to use speakers of the same resistance (Ohm) all around to prevent potential failures or equipment damage.

Let us not recommend something that could potentially cause a problem.

patrickf0345
10-08-2009, 12:02 AM
Depends on what speakers we're talking about.

For example if your fronts are 8ohm and your receiver has specs that say something like 6-16 impedence, you should make sure your fronts fall in this range.

HOWEVER - If you had 4 Ohm surround speakers, it's not a big deal. Sure you are utilzing more current, but you are VERY unlikely to overheat the AVR or cause any type of failure given you are unlikely to power surrounds at those levels for sustained periods of time. People do it all the time.Ok well I think I might of confused some of ya’ll as I stated I the original question the klipsch state that there 8 ohm compatible now is the Impedance lower or higher then 8? The audio technology is ever changing and I’m not up to speed in the home theater part. however if I was talking about 4 ohm the only way I would run them is in series at 8 ohms less current less heat we all know that heat is the 1 one killer of electronics an that there not made with gold. Yes it can be done an it would work great but greatly shorten the life of the device and well most of the home audio equipment is not cheep

Rich_Guy
10-12-2009, 06:05 PM
My first surround sound system around 20 years ago I used 8 ohm front speakers and 6 ohm Infinity speakers for the surrounds and it worked beautifully.

As PFC5 wrote " use 8 ohm setting ".

Techlord
10-13-2009, 02:39 AM
That all depends. Other people do this with dire consequences almost immediately. Each situation is different but it is recommended to use speakers of the same resistance (Ohm) all around to prevent potential failures or equipment damage.

Let us not recommend something that could potentially cause a problem.

In my case I don't have a choice, my speaker package from M&K's 750 THX 5.1 speaker system was designed that way. My front three speakers are 4 ohms while the two rears are 8 ohms. M&K's 950 THX 5.1 speaker system is match the same way, M&K must know what they are doing because if there is any danger they would have been in hot water by now! My receiver never showed any signs of overloads, it has worked beautifly for 10 years.

Loves2Watch
10-13-2009, 10:36 AM
In my case I don't have a choice, my speaker package from M&K's 750 THX 5.1 speaker system was designed that way. My front three speakers are 4 ohms while the two rears are 8 ohms. M&K's 950 THX 5.1 speaker system is match the same way, M&K must know what they are doing because if there is any danger they would have been in hot water by now! My receiver never showed any signs of overloads, it has worked beautifly for 10 years.

That may be true and work in your case but the OP is even mixing brands of speakers. Not a good idea.

Rich_Guy
10-13-2009, 12:25 PM
That may be true and work in your case but the OP is even mixing brands of speakers. Not a good idea.

In my first system I mentioned above the speaker brands were also mixed only the surrounds were Infinity speakers which are a 6 ohm speaker.

This was at the very beginning of "surround sound" or home theater and my first system featured completely different brands of front, center and surround speakers at that time. At least I did try to use speakers which blended well for tonal qualities

patrickf0345
10-14-2009, 05:41 PM
Well after reading all the great info on this forum I decided to upgrade to 7.1 well in my case 7.3 lol my upgrades consist of a new Yamaha RX-V1065 receiver quintet III center an rear surrounds and klipsch b-3 bookshelfs for my left and right keeping it all in the synergy line ,a full in wall wiring with monster cable ..the rough in wiring and sheet rock has been done waiting for the texture an paint that should be finished by friday so i cant wait to hook it all up and see what it sounds like

Loves2Watch
10-14-2009, 07:45 PM
Well after reading all the great info on this forum I decided to upgrade to 7.1 well in my case 7.3 lol my upgrades consist of a new Yamaha RX-V1065 receiver quintet III center an rear surrounds and klipsch b-3 bookshelfs for my left and right keeping it all in the synergy line ,a full in wall wiring with monster cable ..the rough in wiring and sheet rock has been done waiting for the texture an paint that should be finished by friday so i cant wait to hook it all up and see what it sounds like

Sounds awesome. You did pay way too much for those overpriced Monster cables though. In the future or if you can return them check out the following link for all of your high quality cables and wires at low, low prices and they're every bit as good as anything Monster produces. www.monoprice.com