Source selection rotary switch

[binspaul]

Hi,

I am looking for a source selection rotary switch for my preamplifier project. I need to select between the 4 input sources.

-> Which types should I choose - Shorting or Non-shorting
-> How many poles are required?
-> How many decks are required?

NOTE
I am attaching the manual of a rotary switch I came across. It is a Non-shorting 4 Position 2 Pole switch. Is this Okay for my requirement?

---
Best regards,
BP

 

[PRR]

2 pole, 4 throw.

"Decks" depends how it is made. Some switches are a deck per pole. Others get 4 or more poles on one deck.

I prefer non-shorting. I do not like to short outputs to each other. I think whatever comes after the switch should be stable even when the switch is open (between positions; or if you switch to an un-plugged input). However others say shorting. It is probably not critical.

That Greyhill is an excellent switch.

 

[binspaul]

Hello,

The Grayhill switch I mentioned is having the following features:

-> 4 Positions
-> 2 Poles
-> Angle of Throw is 45 deg
-> Non-shorting

So, I hope this is okay for my requirement.

---
Best regards,
BP

 

[JPS64]

ELMA, Grayhill, C&K (gold contacts) in quality and cost order. May be chinese one (never used)?

JP

 

[Yatsushiro]

I've successfully used Lorlin rotary switches:

http://www.lorlin.co.uk/PDF/CK.pdf

 

[Rundmaus]

+1 for the Lorlin switches. My standard type, never failed me. Although mechanical feel and quality (sideways movement of switch axis) could be better...

 

[AuroraB]

Elma 04-series... gold plated contacts....
Elma Rotary switch Type 04, 33,15 €

 

[kodabmx]

I like these: 2P4T 2 Pole 4 Position 1 Deck 10 Pins Band Channael Rotary Switch LW | eBay

Cheap and cheerful and worked for years now... Using a 2P11T version to switch relays for input selection and 170V for a 1N-12b nixie that corresponds to the input.

 

[davidsrsb]

If you use a non-shorting switch, make sure to have high value resistors to ground all inputs and switch wiper to ground

 

[twocents]

I've successfully used Lorlin rotary switches:

Page not found – Lorlin Electronics

+1 for the Lorlin switches. My standard type, never failed me. Although mechanical feel and quality (sideways movement of switch axis) could be better...

Maybe I just have bad luck, but the Lorlin CK switch in my only 3-year-old preamp is making horrible cracking sounds when switching. Sometimes it does not even make good contact and one channel remains dead until you wiggle it a bit.

Something I should have checked before – for input source selecting on a preamp – must it be a break-before-make or make-before-break switch?

 

[JP]

Grayhill 71 series is a bit easier to work with if you’ve the room.