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Can I Use 6ohm Speakers with an 8ohm AV Receiver?

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Old 12-09-2009, 11:54 AM   #1  
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Default Can I Use 6ohm Speakers with an 8ohm AV Receiver?

I am having difficulty in deciding on a home theather system. Originally I wanted to get the SLS Q-Line Gold 650w 5.1 Surround Sound Home Theater available for $375.00 (free shipping) but someone recommended that I get the Yamaha RX-V765 7.2-Channel Digital Home Theater Receiver available for $409.00 (free shipping), but it comes with no speakers.

After doing a comparison of the receivers, it is obvious that the Yamaha has the Sherwood RD-8601 beat hands down, but at a substantial higher costs as the SLS comes complete and the Yamaha is just the AV Receiver alone.

Currently I have a KLH HA7000 System that I think is really a POS but it was given to me some time ago (hey - free is free) and it utilizes 6ohm speakers but the sub-woofer is un-powered.

So I figure I have these choices here:

1) Buy the Yamaha AV Receiver and either use the KLH 6ohm speakers that I currently have until I can upgrade the speakers (if the 6ohm are compatible with the 8ohm receiver). This means no sub woofer unless I put out the extra cash to buy a unit - which is why I went with the SLS in the first place - money is tight right now. I can do maybe $75 for the sub at this time. I just can't afford both the receiver and all speakers together at this time (maybe the speakers in about 3 months). IIRC, the 6ohm speakers on an 8ohm system will make the receiver work harder for the same sound output. There may be other inherrent dangers that I do not know about using 6ohm speakers in an 8ohm system (do tell please).

2) Forget about the Yamaha and stay with the SLS HTIB system. This has its own downfalls, the biggest is no HDMI. But if I hook up my BD80K to the P58S1 using a HDMI and the BD to the AV receiver using the component (RCA) audio out (7 channels), I still get the full SS through the SLS. I can also hook up the P58S1 Toslink out to one of the SLS Toslink in to send the TV audio through the SS system. This brings up another worry about sound lag or 'lipsync' problems and whether I will suffer from this due to the setup or not. If this is potentially a problem, I do not think that the SLS has the ability to deal with the lag (but I may be wrong on this).

3) Buy the Yamaha system if compatible with the 6ohm speakers, keep the SLS speakers (also 6 ohm) and ditch the Sherwood (SLS) receiver and the KLH system on Ebay or Craigslist to recoup some of the costs (figure I might get about $150 for the lot). Total costs is about $634.00 but with the problems associated with Ebay/Craigslist in dumping the Sherwood and KLH.

4) Buy this. But this is a (factory) reconditioned system and I know next to nothing about Onkyo. Can't post the URL because I do not have enough posts. It is the Onkyo Ht-s990 Thx 7.1 Thx Home Theater System 1000 Watt available from www(dot)accessoriesforless(dot)com for $549.00 (plus $82.51 for shipping) which makes the total costs $631.51 which is just about where I will be if I get the Yamaha and keep the SLS speakers and dump the Sherwood receiver and KLH system. (I guess that this receiver does not have HDMI either).

5) Buy the Yamaha because it is such a good deal right now and store it until I can get better speakers. Keep the KLH (this limits me to BD through HDMI to the P58S1 and sound through the KLH to only two channels (RCA hookups because of KLH limitations), and TV through the TV speakers, while just saying NO to the SLS?


My head hurts.....

What advice can you offer?

Last edited by slessard; 12-09-2009 at 12:24 PM..
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Old 12-09-2009, 12:09 PM   #2  
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How about this one it is $550 no tax and free shipping. Great receiver great speakers that are made by an actual speaker company.

http://www.vanns.com/shop/servlet/it...denon-dht590ba
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Old 12-09-2009, 12:11 PM   #3  
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And no you do not want to use 6 ohm speakers with and 8ohm amp, it will over work your amp.
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Old 12-09-2009, 12:26 PM   #4  
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many receivers are rated for 4-8 ohms speakers. have you verified that the rcvr can't do less than 8 ohms?

Yamaha is pretty good.
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Old 12-09-2009, 12:36 PM   #5  
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Quote:
Originally Posted by caliberconst. View Post
How about this one it is $550 no tax and free shipping. Great receiver great speakers that are made by an actual speaker company.

http://www.vanns.com/shop/servlet/it...denon-dht590ba

$499 here (free shipping) http://www.buyriteelectronics.com/el...stem-3p581.htm

Will look at it. Light on power. Will have to check the man website for specifications....

Thanks for the info....
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Old 12-09-2009, 12:42 PM   #6  
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Quote:
Originally Posted by Stew4HD View Post
many receivers are rated for 4-8 ohms speakers. have you verified that the rcvr can't do less than 8 ohms?

Yamaha is pretty good.
Very good point I thought about this too but I think the denon with the boston would be better than the the yammy with the klh. Unless there is more money for speakers. What exactly is your budget?
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Old 12-09-2009, 12:53 PM   #7  
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Originally Posted by caliberconst. View Post
Very good point I thought about this too but I think the denon with the boston would be better than the the yammy with the klh. Unless there is more money for speakers. What exactly is your budget?

$500 is pushing it right now. I can put an additional 3 to 4 hundred later (3 to 6 months) for upgrades.

The SLS is here and that was $375

The Yamaha is $409 but it needs speakers (also it seems to be the best class receiver for the price right now and it is 7.2 compared with 5.1)

The Denon is looking good but it has limitation on power output and I am still researching if it has true 1080p passthrough. It is also a 5.1 like the SLS.
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Old 12-09-2009, 12:59 PM   #8  
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Originally Posted by Stew4HD View Post
many receivers are rated for 4-8 ohms speakers. have you verified that the rcvr can't do less than 8 ohms?

Yamaha is pretty good.

Being an old audiophile (most of my components are Pioneer) I did a lot of research when I purchases my audio system many years ago and Yamaha had good quality back then and it seems to have carried through to today. There are lots of options available on the Yamaha that I can not find on either the SLS or Denon.

Speakers seem to be the issue here for me. I can do the receiver but the speakers will have to wait for a couple of months (unless I use my Pioneer system which will still limit me to stereo).

I need to see if the Yamaha will do 6ohm speakers and if it can, that would leave me about $100 bucks right now for a powered sub if I went that route.

On the Denon: I found this - "the AVR-590 features three HDMI 1080p compatible inputs (repeater function), and it also features analog video conversion to HDMI" Does this mean that it is not true 1080p passthrough or does it mean that it is 1080p passthrough?

Thanks again..

Last edited by slessard; 12-09-2009 at 01:06 PM..
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Old 12-09-2009, 01:37 PM   #9  
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I drive 4 Ohm Emo surrounds with an 8ohm Onkyo 605.

No problems at all and doesn't get any hotter than it did before upgrading.
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Old 12-09-2009, 01:48 PM   #10  
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I drive 4 Ohm Emo surrounds with an 8ohm Onkyo 605.

No problems at all and doesn't get any hotter than it did before upgrading.
Thanks for that bit of info. I was pretty sure that it was possible but did not want to stake the receivers health on it.

I have an email in to Yamaha to see what they recommend.



Respnose from Yamaha: Yes it will work.

Last edited by slessard; 12-09-2009 at 03:02 PM..
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Old 12-10-2009, 05:36 AM   #11  
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The speakers that usually come in the Yamaha HTiB systems are 6 ohms and it WILL drive 6ohm speakers.

I think that Denon system is nice also and will sound better than the Yamaha with the old speakers. I would put Yamaha & Denon about equal in quality and own both. But the Yamaha is more powerful and a better long term receiver IMO.

I built my many thousand dollar HT system piece by piece. Nothing wrong with doing this and in the end it is like getting a new system with each upgrade. The only problem is finding a use for the old stuff you upgrade. You could sell them or use it in a bedroom or TV room system down the road.
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Old 12-10-2009, 10:38 AM   #12  
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I wouldn't worry about running a 6 ohm speaker on the 8 ohm rated receiver. 4 ohm loads can tax certain receivers but many of the receivers of today will handle them without a problem as long as the amp isn't clipping. THX rated receivers can run 4 ohms without a problem as they are tested 3.2 ohm stable. You should be just fine with the 6ohms.
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Old 12-15-2009, 08:38 AM   #13  
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Quote:
Originally Posted by slessard View Post
Being an old audiophile (most of my components are Pioneer) I did a lot of research when I purchases my audio system many years ago and Yamaha had good quality back then and it seems to have carried through to today. There are lots of options available on the Yamaha that I can not find on either the SLS or Denon.

Speakers seem to be the issue here for me. I can do the receiver but the speakers will have to wait for a couple of months (unless I use my Pioneer system which will still limit me to stereo).

I need to see if the Yamaha will do 6ohm speakers and if it can, that would leave me about $100 bucks right now for a powered sub if I went that route.

On the Denon: I found this - "the AVR-590 features three HDMI 1080p compatible inputs (repeater function), and it also features analog video conversion to HDMI" Does this mean that it is not true 1080p passthrough or does it mean that it is 1080p passthrough?

Thanks again..
I just picked up that Denon 5.1 system with the Boston Acoustic speakers for $550 last night and I am thrilled with it. But if you look on Amazon dot com they have it for $100 less. $450 is a great price for what your get! I just watched The Dark Knight on Bluray and it literally shook 2 of my picture frames off of the wall! You won't be disappointed. If you join the free trial of Amazon prime you can get next day air for only 3.99 or 2nd day air for free. Just don't forget to cancel the Prime if you dont want it within 30 days. Let me know if you have any questions about the system.
Stephen
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