Bose T8s mixer used with 4 x IEMs (or 4 x monitor speakers) via the 4 AUX Sends

Hi ST and all Forum members

I have been very impressed, over many years, with your consummate grasp of all things ‘Bose portable PA’.  Many, many thanks for all the focussed and incredibly accurate information you’ve provided to the user community.

So, to my first post/question.

Firstly, I’m a fairly seasoned user of the T1 mixer and have now purchased, but not yet used, a T8s.  Secondly, I’m in the process of setting up a ‘Scene’ on the T8s for a group of 4 x harmony vocalists, who use backing tracks.  On the input side, I’ve assigned the backing tracks from PC, using the USB B input, to Channel 8, summing the stereo signals to mono on Channel 8.  The vocalists using Line 6 wireless mics, are connected to Channel inputs 1 through 4.  [All inputs have been panned hard right for mono out].  Each vocalist will be using a Shure IEM, connected to an AUX output, 1 through 4, so that each vocalist can, ultimately, hear an individual/bespoke mix from appropriate proportions of the signals from Channels 1, 2, 3, 4 (for vocals) and 8 (summed mono backing track) – i.e. 5 signals in total.  The AUX output ‘take off point’ will be ‘Pre-fader, post EQ with FX’, for all 4 AUX outputs.  FOH, in the performance setting, will be a minimum of 2 Line 6 L2T speakers… not my Bose L1 Model II PAS.

My question is, what should be the starting point in the pre-programmed Scene for apportioning the percentage of signals from the 5 input Channel signals routed to each of the 4 AUX outputs?  In further explanation, what I am trying to achieve as the ‘starting point’ is a composite signal at each AUX output that initially mirrors the signal at the Global Master output.  From there, I would apportion – during a sound check - the appropriate % input from each Channel signal that was deemed-to-satisfy each vocalist’s requirement in their individual IEM... I expect that latter part will be a great deal more difficult to achieve than it sounds!

So, should I, for example, take the value of 100%, divide it by 5, and then route 20% of each signal from each of the 5 input Channels to each AUX output or, alternatively, should I route 100% of each signal from each of the 5 input Channels to each of the AUX outputs?  Or would that latter approach overload the AUX output circuitry?  Or should it be 50 % of each input signal… or… what should it be?

Hopefully, that all made sense!  Any suggestions would be greatly appreciated.  Thank you.

PS.  As an aside – and perhaps this should be posted in a more specific part of the Forum – the capability to assign global reverb to AUX outputs 1 through 4 would have been ideal for this user’s purpose rather than, as currently designed, just to AUX 1.

Original Post

Hi MT,

Thank you for joining the Bose Portable PA Community. I'm sorry that your post got stuck in our moderation queue. I hope you figured out what you needed in the interim.

MT (UK) posted:

Hi ST and all Forum members

I have been very impressed, over many years, with your consummate grasp of all things ‘Bose portable PA’.  Many, many thanks for all the focussed and incredibly accurate information you’ve provided to the user community.

We are all learning together.



So, to my first post/question.

Firstly, I’m a fairly seasoned user of the T1 mixer and have now purchased, but not yet used, a T8s.  Secondly, I’m in the process of setting up a ‘Scene’ on the T8s for a group of 4 x harmony vocalists, who use backing tracks. 

On the input side, I’ve assigned the backing tracks from PC, using the USB B input, to Channel 8, summing the stereo signals to mono on Channel 8. 

The vocalists using Line 6 wireless mics, are connected to Channel inputs 1 through 4.  [All inputs have been panned hard right for mono out]. 

Each vocalist will be using a Shure IEM, connected to an AUX output, 1 through 4, so that each vocalist can, ultimately, hear an individual/bespoke mix from appropriate proportions of the signals from Channels 1, 2, 3, 4 (for vocals) and 8 (summed mono backing track) – i.e. 5 signals in total. 

The AUX output ‘take off point’ will be ‘Pre-fader, post EQ with FX’, for all 4 AUX outputs

This is a good starting point to create four individual mixes independent of mix going to the Master Output.  I would start at Level 50% and adjust from there.

OH, in the performance setting, will be a minimum of 2 Line 6 L2T speakers… not my Bose L1 Model II PAS.

My question is, what should be the starting point in the pre-programmed Scene for apportioning the percentage of signals from the 5 input Channel signals routed to each of the 4 AUX outputs?  In further explanation, what I am trying to achieve as the ‘starting point’ is a composite signal at each AUX output that initially mirrors the signal at the Global Master output.

To do this (bold), set the Tap point to Post After Fader.





From there, I would apportion – during a sound check - the appropriate % input from each Channel signal that was deemed-to-satisfy each vocalist’s requirement in their individual IEM... I expect that latter part will be a great deal more difficult to achieve than it sounds!

So, should I, for example, take the value of 100%, divide it by 5, and then route 20% of each signal from each of the 5 input Channels to each AUX output or, alternatively, should I route 100% of each signal from each of the 5 input Channels to each of the AUX outputs?  Or would that latter approach overload the AUX output circuitry?  Or should it be 50 % of each input signal… or… what should it be?

I would start at Level 50% and adjust from there regardless of whether or not you are setting the Tap point Pre or Post.



Hopefully, that all made sense!  Any suggestions would be greatly appreciated.  Thank you.

I hope you've had time to figure all this out on your own.

Please tell us what you end up doing.



PS.  As an aside – and perhaps this should be posted in a more specific part of the Forum – the capability to assign global reverb to AUX outputs 1 through 4 would have been ideal for this user’s purpose rather than, as currently designed, just to AUX 1.

I understand your use case and why you would want this capability.  This is much harder to do than you might expect. The Main Reverb type is shared across all channels, there is only one Main mix. There are 8 Reverb sends, but one shared return - going to Main.

To have Reverb on all four Aux sends, you would give up having four distinct mixes because the Reverb return would be shared. For example: The reverb from Aux 1 would be heard in Aux 2, Aux 3, Aux 4. In early phases, we tried it and it was usable.

To have four unique mixes with Reverb would require a LOT more resources. We could talk about how many people might benefit from having this capability, but we'll never know.

ST

Hi ST

Thank you very much for your response to my questions about the AUX outputs of the Bose T8s, I’ve taken it all on board, and will implement; much appreciated.  In fact, there was no great urgency to the issue because the band (a Frankie Valli and Four Seasons tribute) is at ‘start-up’ and is actively looking for summer bookings!

With respect to your prompt about the firmware update, yes, I carried it out on receipt of the T8s and then reset to factory settings.

Thank you once again.

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