How do I get 9.1 out of 7.1

[paulyg]

I want to add one more set of speakers to my left and right surrounds. Can I just run a wire from one to another

[CJS234]

not sure if it works that way man, but Im not the most knowledgeable guy here. Anybody else have any ideas?

[Woody]

1. Why?
2. You shouldnt because your surround amplification (receiver) is designed to power 1 speaker, not 2. (lowering impedance)
3. You will be hearing the exact same thing out of both speakers.
4. Why?

[fsavoie]

Originally Posted by paulyg

I want to add one more set of speakers to my left and right surrounds. Can I just run a wire from one to another

Maybe I'm wrong, but that will affect the impediance of the speakers so if you put them in parallele you should have a big sound drop. and if you put them in serial your receiver might be heating to much...

[paulyg]

Ther is about 15-18 feet between my fronts and left and rights, I thought it might close the gap some

[prerich]

Originally Posted by Woody

1. Why?
2. You shouldnt because your surround amplification (receiver) is designed to power 1 speaker, not 2. (lowering impedance)
3. You will be hearing the exact same thing out of both speakers.
4. Why?

Agreed - good advise here. More is not always better

[prerich]

Originally Posted by paulyg

Ther is about 15-18 feet between my fronts and left and rights, I thought it might close the gap some

What speakers are you using? Seating distance, where are your surrounds located? This may be able to treated by placement rather than buying more speakers. Lets see what you're working with

[gearyt]

Moving them is your best bet...
but.....
If you have 8 ohm speakers to your amp
you can chain two 4 ohm speakers in series to match ( 8 ohm )
If you have 4 ohm speakers in your system,
you can chain two 8 ohm speakers in parallel to match ( 4 ohm )

hope this sheds light

g

[fsavoie]

Originally Posted by gearyt

Moving them is your best bet...
but.....
If you have 8 ohm speakers to your amp
you can chain two 4 ohm speakers in series to match ( 8 ohm )
If you have 4 ohm speakers in your system,
you can chain two 8 ohm speakers in parallel to match ( 4 ohm )

hope this sheds light

g

Can you do that? if you have 2 4ohm spearkers in series, the current at the receiver will be good, but the voltage at each speaker will be cut no? So you will still lost some sound on each speaker?

Same thing on 8ohm parallele, the voltage will be ok on each speaker, but the current will be cut in half on each. Again at the receiver its ok.

My guess is that in order to have the design rating of the speaker they must be at full voltage and current... if not you will probably be out of the sound curve...

[CptGreedle]

The only 9.1 system I ever saw in a home theater only uses 7.1 at a time, with 2 presence speakers behind the TV. Much like my set up. The presence speakers are not used when the back speakers are on, and only turn on when you have a special sound mode selected. Normally they are off.

[Pelican170]

Originally Posted by gearyt

Moving them is your best bet...
but.....
If you have 8 ohm speakers to your amp
you can chain two 4 ohm speakers in series to match ( 8 ohm )
If you have 4 ohm speakers in your system,
you can chain two 8 ohm speakers in parallel to match ( 4 ohm )

hope this sheds light

g

you sure you can do it like that?

[Kenshiro]

I wouldn't mess with the wiring between the amp and the speakers if I were you.

The easiest and most effective way for you to add speakers is to buy a separte 2-channel amp and run RCA cable from the surround pre-amp outputs on your 705. You just have to decide if your want your two extra speakers to be side surrounds channels or rear surrounds, and then hook up the new speakers to your separate amp.

[spcamaj]

easy with the 9.1 lmaooo 7.1 is great

[Ranger-R]

agreed, I would add an amp to a pre-out, don't want to chance a burnout of a speaker channel.

[Beta Man]

If "filling the gap" is your issue, I'd suggest going into the calibration menu of your AVR and inputing the distances, so the sound sent to each discrete channel is adjusted accordingly.



EDIT:

Searching back through your posts to get a feel for what you're working with, I see you have Yamaha towers/center etc.... and you ordered a SECOND yamaha Subwoofer........

You're trying to setup a 9.2??? does your room happen to be a gymnasium

[paulyg]

My room is 20x25. I did get the other sub awhile back and what a difference the .2 makes As far as trying to get 9.2 goes, I think I just have an addiction It must be time for an intervention

[Beta Man]

Originally Posted by paulyg

My room is 20x25. I did get the other sub awhile back and what a difference the .2 makes As far as trying to get 9.2 goes, I think I just have an addiction It must be time for an intervention

Of course, it should be stated that you can "ONLY" get 7.1

There is only one discrete subwoofer channel (athough you can send it to 20 different subs if you want to) and only 7 other discrete channels of sound, regardless how many times you split it up, it's still 7.1

[paulyg]

Originally Posted by Beta Man

Of course, it should be stated that you can "ONLY" get 7.1

There is only one discrete subwoofer channel (athough you can send it to 20 different subs if you want to) and only 7 other discrete channels of sound, regardless how many times you split it up, it's still 7.1

How about 7.1.1

[Big Daddy]

First, using 2 subwoofers in a small home theater room has major advantages over one subwoofer. For the explanation, read A Guide to Subwoofers (Part II): Standing Waves & Room Modes.

Second, in a relatively large home theater room, 9.2 may have some small advantage. In fact, some receivers such as my Denon 4308CI support two set of surrounds (A & B) in addition to the two in the rear. However, if you are going to add 4 surround speakers to the sides, you better buy 8 Ohm surround speakers. Denon warns against using 6 Ohm or 4 OHm speakers. The other alternative is to use your receiver for one set and an external amplifier for another set. This is the method I used for my setup.

[phantompwr]

It is sometimes possible to connect two speakers in parallel, but it is going to be very taxing on the amp and you will lose sound quality as well. If you had 2 8 Ohm speakers and you connected them in parallel (eg. both speakers connect directly to the same amp channel you would end up with about a 4 Ohm load.
I think the Onkyo 705 might support 4 Ohm, their page isn't loading for me right now so I can't check.
I would recommend, as some of the others here have suggested, getting a second amp though rather then going the 4 Ohm route.
I am wondering though, do you really need the extra speakers in there? Is the soundfield dropping between the front and surround speakers so much that adding extra gain to the surrounds isn't enough?