• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required as is 20 years of participation in forums (not all true). Come here to have fun, be ready to be teased and not take online life too seriously. We now measure and review equipment for free! Click here for details.

ARX RS-1 XLR AB Switcher Review

Joined
Jun 1, 2019
Messages
8
Likes
10
Location
San Jose, CA
#41
That’s outstanding!
1) can you share instructions?
2) send to Amir for testing ?

thanks
Wayne
I only ordered 5 PCBs and hand soldered one. It’s basically 2 pairs of Omron low signal relays. I will try to get some AP measurement when my company office opens again... If it measures well I will post the schematics.

9A0F1B8A-80D8-4696-9F81-A40640ADDF9F.jpeg
 
Joined
Jul 6, 2020
Messages
74
Likes
33
#42
I did the same for my Ncore amplifier, based on a preassembled board from Electronic Salon

https://nl.aliexpress.com/item/1981878470.html

The relays used should be high quality (gold plated silved alloy) and are make-before-break avoiding (most) of the clicks. Ground will have to be common but all the rest can be switched with a 12V trigger from your receiver/processor.

It does need a 12V regulated power supply but that's also easily found.

Basically then you add & solder 4 XLR inputs and output to your amps, and include a 12V 3,5 inch mono jack for the trigger input.
salon.jpg
 

waynel

Addicted to Fun and Learning
Forum Donor
Joined
Nov 14, 2019
Messages
711
Likes
825
#44
Amir, did you open the unit to see how it is build? Is it relay based or otherwise? (should hear the click, anyway)
I’ll open it and post photos when I get it. It is relay based.
 

waynel

Addicted to Fun and Learning
Forum Donor
Joined
Nov 14, 2019
Messages
711
Likes
825
#45
I did the same for my Ncore amplifier, based on a preassembled board from Electronic Salon

https://nl.aliexpress.com/item/1981878470.html

The relays used should be high quality (gold plated silved alloy) and are make-before-break avoiding (most) of the clicks. Ground will have to be common but all the rest can be switched with a 12V trigger from your receiver/processor.

It does need a 12V regulated power supply but that's also easily found.

Basically then you add & solder 4 XLR inputs and output to your amps, and include a 12V 3,5 inch mono jack for the trigger input. View attachment 78478
That looks very good , could you post your finished build? Would be nice if someone built a 2,4, and 8 channel version in a box with either xlr breakout cables or all the xlr jacks.

right now the ARX rs-1 is the only commercial product I’ve found . For 2 channel it’s fine but doesn’t scale well to 8 channel due to cost and a mess of boxes. Also 2 relays in series should give perfect measurements ( to the limit of the ap analyzed) including isolation from the non selected port.
 

RichB

Major Contributor
Forum Donor
Joined
May 24, 2019
Messages
1,213
Likes
1,226
Location
Massachusetts
#46
I did the same for my Ncore amplifier, based on a preassembled board from Electronic Salon

https://nl.aliexpress.com/item/1981878470.html

The relays used should be high quality (gold plated silved alloy) and are make-before-break avoiding (most) of the clicks. Ground will have to be common but all the rest can be switched with a 12V trigger from your receiver/processor.

It does need a 12V regulated power supply but that's also easily found.

Basically then you add & solder 4 XLR inputs and output to your amps, and include a 12V 3,5 inch mono jack for the trigger input. View attachment 78478
Isn't break before make the correct option to avoid both signals for an instant?

- Rich
 

RichB

Major Contributor
Forum Donor
Joined
May 24, 2019
Messages
1,213
Likes
1,226
Location
Massachusetts
#48
Last edited:

Labjr

Addicted to Fun and Learning
Joined
Dec 14, 2018
Messages
565
Likes
439
#49
Building an input selector box should be fairly easy. It's the small details like pop suppression and isolation that need to be worked out. Good circuit board layout is probably important to reduce crosstalk.

Quality signal relays are important. Omron would be a good choice and should be purchased from an authorized distributor. Anything on AliExpress or Ebay that comes from China may be fakes.
 
Joined
Jul 6, 2020
Messages
74
Likes
33
#50
Perhaps I am not using the terminology.
Here is the Kramer VS-4X mechanical XLR switch:
https://www.kramerav.com/us/product/vs-4x#Tab_Specification



I have used this to compare two level-matched active sources switching the inputs many times with no pops or issues.

- Rich
Oh, well, if the circuit provides a load to the amplifier it might suppress pops too? I'm not an electronics engineer, so don't take my words for gospel.
 
Joined
Jul 6, 2020
Messages
74
Likes
33
#51
Building an input selector box should be fairly easy. It's the small details like pop suppression and isolation that need to be worked out. Good circuit board layout is probably important to reduce crosstalk.

Quality signal relays are important. Omron would be a good choice and should be purchased from an authorized distributor. Anything on AliExpress or Ebay that comes from China may be fakes.
Even quality relays aren't expensive parts.
 

RichB

Major Contributor
Forum Donor
Joined
May 24, 2019
Messages
1,213
Likes
1,226
Location
Massachusetts
#52
Oh, well, if the circuit provides a load to the amplifier it might suppress pops too? I'm not an electronics engineer, so don't take my words for gospel.
I don't think that having a state where sources are summed during switch-over is right. Perhaps a EE can weigh in.

- Rich
 

Robbo99999

Major Contributor
Forum Donor
Joined
Jan 23, 2020
Messages
1,827
Likes
1,389
Location
UK
#57
Joined
Jul 4, 2019
Messages
28
Likes
14
#58
I use a switch box too, and it's even simpler & multiple times cheaper than the one is the review but it's just for RCA cables:
https://www.amazon.co.uk/HQ-Sources...ual+2-Port+Audio+Switch&qid=1597604858&sr=8-1

Is there any point in reviewing/testing a switch like this one I have, seeing as we're testing switches?
Looks nice. Does anyone have any recommendations for an automatic one though? Again not laziness but needs to be "rest-of-the-family" proof.
(edit: RCA input output to be specific).
 

Kal Rubinson

Major Contributor
Industry Insider
Joined
Mar 23, 2016
Messages
2,876
Likes
4,188
Location
NYC/CT
#59
right now the ARX rs-1 is the only commercial product I’ve found . For 2 channel it’s fine but doesn’t scale well to 8 channel due to cost and a mess of boxes. Also 2 relays in series should give perfect measurements ( to the limit of the ap analyzed) including isolation from the non selected port.
I am using a Coleman 7.1SW Switch. It switches silently among 4 inputs of 8channels each. XLR in/out.
I also have a Zektor MAS7.1 which I no longer use because it is RCA in/out in addition to S/PDIF and HDMI. It switches silently among 3 inputs of 8channels each.
 
Last edited:
Joined
Jun 21, 2020
Messages
17
Likes
20
#60
Adding home theater bypass to any DAC.

both an AVR LR preouts and a DAC can drive the same amp.
I have a DAC with XLR feeding my headphone amp in my office and I'm going to be adding powered monitors to my setup. I assume this would be the type of device I need? The price seems excessive... but I probably don't need all the features since a manual switch would be within my reach?
 
Top Bottom