If you recently purchased a system...........

**Clive** · 04 May 2005, 21:52 Wednesday

bump

**Bitece** · 12 May 2005, 01:10 Thursday

Switching between 2 amplifiers

What's the best way to switch a single pair of speakers between 2 amplifiers?
I've seen some in-wall A/B switches-- will there be any impedance issues?

**Patt** · 12 May 2005, 01:14 Thursday

Mmmmmmm...maybe Parts Express has something like that. They seem to have lots of electronic parts and stuff, it's worth a shot.

**Stoney** · 12 May 2005, 03:47 Thursday

I have not looked into any of the systems that switch a speaker(s) between amps. I know they are out there because dealers use them all the time to demo equipment they sell.
Having said that, I would make sure the switch setup always keeps an 8 ohm load on the amp output. I suppose this could be accomplished with dummy loads(resistors) and a 4PDT Switch. Not sure what kind of switch to use that would cause no load spikes switching back and forth from speaker to dummy load. If you plan to always switch with power off, it is probably a non-issue. If you want to hot-switch (for comparison etc.) I would be concerned about the stress of the sudden load spikes on the amp.
There may be someone in the DIY forum that knows how the dealer switch panels work.

**Bitece** · 12 May 2005, 10:50 Thursday

Amp switch

No, not looking for an A/B comparison. I just want to switch between 1 amp for 2 channel and another for multi-channel.

**georgev** · 12 May 2005, 13:02 Thursday

Why would you want to do that.
Wont your two channel amp anyway continue to run your two front speakers while you turn the other amp on to run your other speakers?
Perhaps more detail on your setup?

**Clive** · 12 May 2005, 23:54 Thursday

That's true. However let's say for instance Bitece that you already have your 2 channel and your Multi amps and also that your source is a CD player, one way to do this, you could piggy-back the RCAs (audio) from the back of the CD player send a signal to each of the amplifiers. However this setup may require volume controls at the speaker locations. So then, if you don't want sound to be in any one area it will be a matter of just turning OFF the attached amp and/or turning off the volume control in that room.

Hope this helps :T

Comments?

**Bitece** · 13 May 2005, 00:01 Friday

2 amps

Here's the idea-- I want to use my Soundcraftsmen tube amp (just won on Ebay) to play lp's only. My multi-channel Rotel I would like for cd's and video.
I guess it's kind of an analog vs. digital setup. So really all I'd like to do is to choose one amp when deciding on what music to listen to. I just liked the idea of a vintage 2 channel analog setup that would be separate from the multi-channel digital processing.

**Clive** · 13 May 2005, 00:12 Friday

We both posted at about the same time.

Explain your speaker setup. Will any of the amps share speakers?

**Bitece** · 13 May 2005, 00:16 Friday

amp switching

My plan was to run the Forte's (L&R mains) off both amps. I would not use both amps simultaneously nor would I perform an A/B comparison.

**Bitece** · 13 May 2005, 00:28 Friday

An example

Page missing | Control4

http://www.smarthome.com/9725780.html

Damn Racoon!

This is an example of something I was considering. It's automatic and its power rating meets the demands of my amps.

**Clive** · 13 May 2005, 00:45 Friday

Looks like that would work for what you want to do.

**Bitece** · 13 May 2005, 01:09 Friday

Amp switch

That unit only accepts RCA inputs. The vintage amp does not have an RCA output. Would I be able to connect it using the speaker output from the amp using speaker wire that terminated in RCA plugs?

**Bitece** · 13 May 2005, 01:16 Friday

http://ww2.onecall.com/PID_4681.htm

i think this one may be better.

**Stoney** · 13 May 2005, 04:59 Friday

I like the SpeakerCraft auto switcher, but when are you ever going to have 150W coming out of the pre-amp. It is interesting that they call it a Line-Level audio A/B switch and then rate it at 150W. Their manual shows it hooked up between the pre amp and the amp. I wonder if it could be used on the output of the power amp?

**Toolman** · 13 May 2005, 07:15 Friday

1067 - Default surrround mode of Satellite

First, as a new Rotel owner, let me thank you guys for already resolving some of my questions concerning sub setup - this forum is great and your efforts are appreciated!

Now for my question: I have a satellite receiver hooked up to my 1067 receiver, I use it mostly for listening to the music channels and I'd like to have the default surround mode set to "7 channel stereo" for this input. I have programmed this input to default to this setting, but when I turn it on, it defaults to "Dolby PLIIx" mode.

I'm suspect this is being controlled by another menu setting somewhere else, but I haven't been able to find it yet. Any suggestions?

**Clive** · 14 May 2005, 02:35 Saturday

Toolman welcome to the Guide I am glad you've joined in and thanks for posting..................I've invited Andrew from the Rotel group to respond to your question.

Stick around :T

**Andrew Pratt** · 14 May 2005, 10:21 Saturday

Toolman exactly how did you program the 1067 to default to 7 channel stereo? Also which remote are you using?

**Toolman** · 14 May 2005, 14:16 Saturday

Andrew, I went from the system status menu to the main menu, then input setup and selected the 7 channel stereo option as the default mode. I am using the RR-1050 remote that came with the 1067.

P.S. - I'm at work at the moment, so I am going by memory (which is anything but reliable!)

Thanks, John

**Andrew Pratt** · 14 May 2005, 15:38 Saturday

hmm if it is set that way then it should default to 7 channel stereo mode. I assume you do in fact have seven speakers and that they're all enabled in the speaker set up menu? Maybe post a seperate thread in Club Rotel and we'll get it resolved there.

**Toolman** · 14 May 2005, 18:03 Saturday

Done!

Thanks Andrew

**Clive** · 15 May 2005, 18:32 Sunday

Stoney

Originally posted by Stoney

I like the SpeakerCraft auto switcher, but when are you ever going to have 150W coming out of the pre-amp. It is interesting that they call it a Line-Level audio A/B switch and then rate it at 150W. Their manual shows it hooked up between the pre amp and the amp. I wonder if it could be used on the output of the power amp?

I think that the 150 watts is the maximum load that switcher can handle.

**Stoney** · 18 May 2005, 23:03 Wednesday

Would the switcher ever see a load of 150W? It only drives the input of the power amp.

**Clive** · 22 May 2005, 20:21 Sunday

Better late than never......

Sorry mate I'm sure I checked this thread..............anyway, it would seem based on the desciption on the website of the SL-one that it can handle an amplified signal of up to 150 watts.

**Glen B** · 25 May 2005, 05:41 Wednesday

Originally posted by Stoney

I like the SpeakerCraft auto switcher, but when are you ever going to have 150W coming out of the pre-amp. It is interesting that they call it a Line-Level audio A/B switch and then rate it at 150W. Their manual shows it hooked up between the pre amp and the amp. I wonder if it could be used on the output of the power amp?

Am I seeing something different ? :E Where does it say the Speakercraft switcher handles line level signals ? Where does the manual show it hooked up between pre and power amp ? I see it shown as being connected between the L&R speaker outputs of two receivers and one pair of speakers.

**Stoney** · 31 May 2005, 09:00 Tuesday

Don't know where it is now, when I first followed the link it showed a line level model (LL-One) with RCA inputs and outputs :huh:

ops: . Perhaps I was dreaming. The SL-One is definately a speaker level switcher. :T