Greeting all,
I have a solid state preamp and a tube preamp. I also have two tube amplifiers amplifiers. I have one set of main speakers.
but will also like to have the option to hook up other room speakers nearby.
I'd like to be able to switch between preamps. I'd like to switch between amps.
I have done this in the past with solid state gear but tubes are a little more complicated
I have a russound rd-4. here is a link to a pic off the net.
https://reverb.com/item/71728052-ru...-4-zone-speaker-switch-amplifier-distribution
it will switch between two amps and 4 sets of speakers.
This is on the output side of course.
The tube amps I'm using are both below 5 watts per channel.
With tube amp use would it be as simple as hooking up a higher value 10 watt or better resistor across each of the amp speaker outputs to protect the possible no load scenario or am I over simplifying ?
On the input into the preamp , I was going to use a simple splitter box like this. and send it to just one input into either preamp.
https://www.aliexpress.com/item/1005005549280098.html?spm=a2g0o.cart.0.0.30fa38da8I5fst&mp=1
I would use this in multi rooms too with some other high efficiency speakers I have. The main room uses speakers with a 102db efficiency.
Any advice or better recommendations would be greatly appreciated.
Thanks!
I have a solid state preamp and a tube preamp. I also have two tube amplifiers amplifiers. I have one set of main speakers.
but will also like to have the option to hook up other room speakers nearby.
I'd like to be able to switch between preamps. I'd like to switch between amps.
I have done this in the past with solid state gear but tubes are a little more complicated
I have a russound rd-4. here is a link to a pic off the net.
https://reverb.com/item/71728052-ru...-4-zone-speaker-switch-amplifier-distribution
it will switch between two amps and 4 sets of speakers.
This is on the output side of course.
The tube amps I'm using are both below 5 watts per channel.
With tube amp use would it be as simple as hooking up a higher value 10 watt or better resistor across each of the amp speaker outputs to protect the possible no load scenario or am I over simplifying ?
On the input into the preamp , I was going to use a simple splitter box like this. and send it to just one input into either preamp.
https://www.aliexpress.com/item/1005005549280098.html?spm=a2g0o.cart.0.0.30fa38da8I5fst&mp=1
I would use this in multi rooms too with some other high efficiency speakers I have. The main room uses speakers with a 102db efficiency.
Any advice or better recommendations would be greatly appreciated.
Thanks!
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First, make sure your preamps have zero DC offset - 1 meg or lower resistor to ground after the output coupling cap. Then should be safe to switch between them. Never switch a preamp on or off while an amp is on.
A 50-100 Ohm resistor across each amp's output reduces the amplitude of the high-voltage transient that will occur if the output stage abruptly switches off. Triodes are less susceptible, since it takes much more drive to reach cutoff.
A 50-100 Ohm resistor across each amp's output reduces the amplitude of the high-voltage transient that will occur if the output stage abruptly switches off. Triodes are less susceptible, since it takes much more drive to reach cutoff.