Misc Connection Help Needed

[smcraces]

speaker switching for a 2channel reciever

Im trying to figure out a way to switch a 2 channel 5.1 tuner/amp to allow a b channel output to outdoor speakers.
Currently connected a post amp switch to run both zones at the same time or one and not the other.
The output to internal 2channel drops drastically ( expected) , but I didnt consider other channels like the SW still running at main power output in the house regardless of what zone(s) are running.

The reciever only has an "A " channel. When I run both zones , the interior main speakers get distorted when I try to increase the volume level to make up for the power division to the two zones, and the sw runs loud as the volume compensation requires it to , but this causes vast differences in the speaker outputs through the interior room.

the sub is run on a "pre out".

any suggestions on how to connect using the existing equipement

 

[karltl]

Youmight post your question in one of the pro installers forums (I think there is one on this site). I've read some post's, in a pro installers forum, on RemoteCentral.com (thats the site where I first heard about Audioholics) that mention the use of impedance matching volume controls.

I'm not sure but this may be a solution. As I recall my ohm's law, if you attach two 8 ohm speakers to the same output of an amp, the speakers will present two, parralell, 8 ohm impedance loads. The amp will see this as about a 4 ohm load. This would tax the amp pretty well unless it was pretty powerfull to begin with. Seems like this would definately explain the output level drop inthe main speakers and might also explain the distortion you mentioned.

As I understand it, an impedance matching volume control allows you to hook up multiple speakers to the same output line froman amp but have the amp continue to see an 8 ohm load (it would think it only had one speaker attached). Since you'd be driving two physical speakers the power from the amp would have to be split between them so I dont think this would eliminate the volume drop but could address the distortion issue.

Anyone else know more about these devices? I know they're used in alot of pro installs where speakers are installed throughout the house.

hope this helps.

 

[Johnmalo]

Cable for Speakers

I just framed a new room and have not drywalled yet ( 28ft x 26ft x 10ft high ) Prior to finding this great web site, I ran above the ceiling and 18 inches away from AC power an unshielded 12AWG, CL3, PVC insulation, conductor/strand is 19/.0185 built by General Cable. My longest run is 55ft from speaker to receiver. Would you suggest that I remove this cable and replace with another type. I plan on buying a 12K Theater System that your site suggests. Thanks for your help.

 

[remdog99]

speaker WATTAGE required for amp

I have an 80 w amp--how strong should my speakers be--min. 100w?

 

[rebuckley]

Question from a BEGINNER!

I finally moved out of the stix and got "The Dish". I am looking to grab a big screen for the great room - however - I think I have a problem. The sat. comes into a single DVR/receiver on my main floor. From there the signal goes (via coax) through the walls back up to the great room (where I want the big screen). Is there any way - aside from rebuilding my walls) to use the existing coax and ""boost"" the signal prior to going into the new big screen? Or do I need to re-think how the signal is coming into the house?

 

[jaxvon]

You should post this in a new thread in the proper section so it get get more views.

 

[countryjoe]

Simple set up?

Hi,
I'm looking for the most efficient and best way to hook up an Explorer 4200 digital cable box, a Panasonic DVD player (with component and S-video) and a Panasonic TV (which has S-video, component video).

Thanks,

 

[jaxvon]

Hey Joe,

You might want to post a new thread in the Cable section of the forum, it will probably get more attention there. That said, do you have a receiver, or some kind of system that you want to integrate with these other pieces, or are you just connecting them to the TV?

 

[countryjoe]

Just a simple connection to a TV. No stereo involved.

Thanks!

 

[jaxvon]

Well, the best way to do it would be to use component video for both the cable box and the DVD player, but your TV might not have 2 component inputs. If that's the case, opt for the component video on the DVD player and S-Video on the cable box. As far as audio goes, if your TV has digital inputs, use them. Otherwise just the standard stereo RCA connections will work fine.