Hello,

I would greatly appreciate some advice. I have a Bose L1m2 with a b1 and T1, I've had it 10 years and I love it. Some of the bars I play in require me to plug into their house system at the wall port on the stage, when asked to plug into these I don't get to see what the system the bar is using, very often the staff operating it switch the house system from their music to the band channel, the problem I am having is in some of the bars I can't get an output from the t1 but I can in other bars, I can't figure out what is going on. I've tried searching for answers on the T1 outputs but I either can't find any or get confused about the information I find, if you are replying please give me the most basic explanation as I really struggle with tech stuff. 

In one bar I take an 1/4 inch Jack lead from the aux output to a channel on their mixing desk, this works fine.

in another bar they have 2 xlr to jack leads running from the wall I plug 1 Jack into the master output and the other into the aux and I get a sound.

in another bar I have a trs y cable that I connect the Jack to the master output and the male xlr ends to the wall, this works in one bar but will not work in 2 other bars, that's where I get confused. Last night I ran a Jack to xlr cable from the master output to one of the 2 wall house inputs, does this mean I will only get sound from 1/2 of the I house speakers or does only using one input give a weaker signal? Sorry I really don't understand.

I'm thinking of purchasing an S1, in the venue where the trs y cable works would I take a line out of the aux output to use the S1 as a monitor?

I'm also thinking of purchasing the t8s, (the extra channels would be handy) I take it the 2 xlr output sockets would solve my connecting to the bars systems? 

I hope this makes sense, many thanks for your time.

Original Post

Hi Laymans terms,

Thank you for joining the Bose Portable PA Community.  Welcome.

You've hit on one of the black holes for anyone using sound systems: connections to another system. This is particularly difficult when you don't know what is on the other side of the connection.

The best defense is preparation

  • Get documentation or guidance from the venue about what kinds of connections it supports
  • Carry adapter cables for various situations
  • Do a sound check before the show


Background information:

  • The T1 (and T4S and T8S) ToneMatch mixers - all the outputs are balanced
  • For best results, use a balanced connection on the third-party connection if possible
  • Using a Y-adapter / splitter cables to connect a balanced output to two unbalanced inputs rarely works
  • Connecting a balanced output (T1, T4S/T8S) to a stereo input rarely works


Laymans terms posted:

Hello,

I would greatly appreciate some advice. I have a Bose L1m2 with a b1 and T1, I've had it 10 years and I love it.

That's terrific.

Some of the bars I play in require me to plug into their house system at the wall port on the stage, when asked to plug into these I don't get to see what the system the bar is using, very often the staff operating it switch the house system from their music to the band channel, the problem I am having is in some of the bars I can't get an output from the t1 but I can in other bars, I can't figure out what is going on. I've tried searching for answers on the T1 outputs but I either can't find any or get confused about the information I find, if you are replying please give me the most basic explanation as I really struggle with tech stuff. 

As I said above, this is a black hole. It can be difficult because you don't know what's on the other side of the connection.  I've found all kinds of strange connection setups in bars and restaurants.



In one bar I take an 1/4 inch Jack lead from the aux output to a channel on their mixing desk, this works fine.

That makes sense. A 1/4 inch jack directly on a mixing desk should work fine.

in another bar they have 2 xlr to jack leads running from the wall I plug 1 Jack into the master output and the other into the aux and I get a sound.

Good. You were lucky.

If you can find out what the intent was for the XLR inputs on the wall, you may find you don't need to connect both the T1 Master and Aux inputs.  The two XLR inputs may lead to two channels on a mixer behind the scenes. 





in another bar I have a trs y cable that I connect the Jack to the master output and the male xlr ends to the wall, this works in one bar

You were lucky.

but will not work in 2 other bars,

That's not surprising. Y-cables can be wired in various ways and if that wiring is not appropriate for the inputs at the other end, they don't work.

that's where I get confused. Last night I ran a Jack to xlr cable from the master output to one of the 2 wall house inputs, does this mean I will only get sound from 1/2 of the I house speakers or does only using one input give a weaker signal? Sorry I really don't understand.

You need to ask the people at the venue how they intended the house inputs to be used. I'd be surprised if they had two inputs - one for each half of the house. I might expect that in a system wired for stereo (home audio) but not in a commercial installation.



I'm thinking of purchasing an S1, in the venue where the trs y cable works would I take a line out of the aux output to use the S1 as a monitor?

The connection you used with the T1 worked, so the S1 Pro LINE OUT should also work. The S1 Pro LINE OUT is also balanced mono like the T1 Master Output.



I'm also thinking of purchasing the t8s, (the extra channels would be handy)

That's a great reason to get a T8S.

I take it the 2 xlr output sockets would solve my connecting to the bars systems? 

The T8S has more output options than the T1. The T8S has both1/4 inch (6.3 mm) Tip-Ring-Sleeve AND XLR outputs.

And that means less guess work with adapters.



I hope this makes sense, many thanks for your time.

Does that help?
ST 

Attachments

Photos (1)

That's brilliant, thank you! Unfortunately in my experience most of the bars don't have a clue what the system is, an outside company come in and install the system and tell them to switch it to a channel for the band and the only other controls they know are the master volume. Is it ok to run 1 jack to XLR cable from the master output to one of the house wall inputs?, Thanks again for the advice, I really appreciate it!

Hi Laymans terms,

Laymans terms posted:

That's brilliant, thank you! Unfortunately in my experience most of the bars don't have a clue what the system is, an outside company come in and install the system and tell them to switch it to a channel for the band and the only other controls they know are the master volume. Is it ok to run 1 jack to XLR cable from the master output to one of the house wall inputs?

If the house system is set up for a line level input (not a microphone level input - unlikely), a cable like this should work.

If the signal is too hot (you get a lot of distortion) using a -20dB  pad  may help.

Thanks again for the advice, I really appreciate it!

Please tell us about your music.

ST

Attachments

Photos (1)
ST posted:

Hi Laymans terms,

Laymans terms posted:

That's brilliant, thank you! Unfortunately in my experience most of the bars don't have a clue what the system is, an outside company come in and install the system and tell them to switch it to a channel for the band and the only other controls they know are the master volume. Is it ok to run 1 jack to XLR cable from the master output to one of the house wall inputs?

If the house system is set up for a line level input (not a microphone level input - unlikely), a cable like this should work.

If the signal is too hot (you get a lot of distortion) using a -20dB  pad  may help.

Thanks again for the advice, I really appreciate it!

Please tell us about your music.

ST

They are getting no sound from my T1 feed (or so low that their system can't detect it)

So are you saying I should basically try ignoring one side of their input? Just take the Master from my T1 and use a single TRS/XLR? When I try to split the TRS with a Y is that somehow cancelling each other out? Just trying to understand here.


Another venue  Stereo RCA (Female) jacks in the wall

Since the tracks I run are stereo, If I use the cable pictured above, won't I lose one side (left or right)?

Hi MikeS,

MikeS posted:

They are getting no sound from my T1 feed (or so low that their system can't detect it)

So are you saying I should basically try ignoring one side of their input? Just take the Master from my T1 and use a single TRS/XLR? When I try to split the TRS with a Y is that somehow cancelling each other out? Just trying to understand here.

The output of the T1 is balanced mono. If you split it, the two resulting connections will have the polarity reversed. If you connect both of those to a stereo input, they will tend to cancel each other resulting in very low volume.

You can read more about that here: Balanced vs Unbalanced  

When you connect the T1 output to just one side of a stereo input, you won't have the cancellation issue.


Another venue  Stereo RCA (Female) jacks in the wall

Unless the venue is running a stereo sound system (highly unlikely), those two inputs are probably being summed to mono.



Since the tracks I run are stereo, If I use the cable pictured above, won't I lose one side (left or right)?

The T1 is a mono device. If you connect a stereo source to channel 4/5, the T1 mixes that down to mono.


ST

Hi CityFolk,



The simplest thing that will probably work is a cable like this.

Comprehensive EXF 1/4

Source: https://www.bhphotovideo.com/c...EXF_1_4_Male_to.html

CityFolk posted:

@ST is there some sort of splitter/conversion box (vs Y cable) that one could take the balanced mono out from the T1 master and through that box connect to the RCA jacks (or whatever)?

Splitters or Y-cables between a balanced output and unbalanced stereo inputs do not work.

Why the cable pictured above should work. 

When you insert a 1/4 inch (6.3mm) Tip-Sleeve to the T1 Master Output, this creates an unbalanced connection. RCA connections are always unbalanced.  The cable should work.

If you are concerned because the house system has dual RCA inputs, I would not be. Almost all house systems are mono. If there are dual RCA inputs, they are probably being summed to mono further downstream.  However you could use a splitter like this.

Image result for rca splitter



PS - you don't need to @notify people anyone who has replied in a discussion. They will be notified automatically whenever there is a new post in a discussion.

ST posted:

Hi CityFolk,



The simplest thing that will probably work is a cable like this.

Comprehensive EXF 1/4

Source: https://www.bhphotovideo.com/c...EXF_1_4_Male_to.html

CityFolk posted:

@ST is there some sort of splitter/conversion box (vs Y cable) that one could take the balanced mono out from the T1 master and through that box connect to the RCA jacks (or whatever)?

Splitters or Y-cables between a balanced output and unbalanced stereo inputs do not work.

Why the cable pictured above should work. 

When you insert a 1/4 inch (6.3mm) Tip-Sleeve to the T1 Master Output, this creates an unbalanced connection. RCA connections are always unbalanced.  The cable should work.

If you are concerned because the house system has dual RCA inputs, I would not be. Almost all house systems are mono. If there are dual RCA inputs, they are probably being summed to mono further downstream.  However you could use a splitter like this.

Image result for rca splitter



PS - you don't need to @notify people anyone who has replied in a discussion. They will be notified automatically whenever there is a new post in a discussion.

I have searched ebay through and can't find the single female RCA to twin male RCA - please can you post where this can be obtained, many thanks.

Add Reply

Likes (0)
Post
Having trouble signing in?

We recently updated our sign-in procedure and if you have old sign-in data cached, this can create a problem. Please:

  1. Clear your browser cache and cookies
  2. Then close the browser (not just the window)
  3. Open the browser and try again
Thank you

Please make sure that your profile is up to date
×
×
×
×