Here's some documentation for your Bose System:
Serial Effects - excerpt from the manual

And then the
Alesis NanoVerb Manual.
Edit: It looks like the signal path for the Picoverb is the same as the Nanoverb. Here's the Alesis PicoVerb Manual.

From Chapter 2: Connections
From Page 12

Blue "Ring" is Send from the Bose System
Purple "Tip" is the Return to the Bose System

From Page 15:

It seems that with the Nanoverb you can use two channels when you operate in "stereo" mode. But you cannot control the left and right channels independently. So you can maintain the separation between the channels but not have them running different levels, mix, or effects.

EDIT: Note - you will need an INSERT cable for each Bose Channel you want to run through your effects unit. (up to 2 max).

See the original discussion:
hello, everyone!
Original Post
Originally posted by Dean Randall:
Hi PJ,
We use the Nanoverb all the time with our lead vocals going into channels one and two. We use the insert jacks with a TRS "Y" cable as ST shows in his diagram with no problems. There is no separate control for the right and left side but unless you are using a stereo effect, it doesn;t make much difference. This leaves channels three and four open for other uses. As far as the difference between he Pico and Nano, the Nano has more reverbs and it has both an input and output level vs the Pico which I believe only has an input volume level. For the difference in price (I think about $20) the Nano is worth it.
When using the Nanoverb with this setup, make sure your gain staging is correct. Get the mic levels set to where they need be before hooking up the reverb. We set the input and output levels on the Nanoverb at about two o'clock and the mix level at about 9 o'clock. I always do an A/B test and check the mic without the reverb and then plug it into the insert jack and check it just to make sure it is about the same volume so as to optimize the setup without overdriving the reverb or having the input level set too low. Hopefully this makes sense and helps your decision. It is a very economical answer and all you need is a touch of reverb or you muddy up the sound.
Good luck!

see it in context
I need some serious help here. I've recently purchased a Nanoverb, along with a TRS "Y" cable.

Without the Nanoverb: I've got everything setup on the PAS, all volumes set.

I plug in the TRS into the INSERT on Channel 1 and run the SEND to the LEFT INPUT on the Nanoverb. I then run the RETURN from the LEFT OUTPUT on the Nanoverb.

I get no sound. No input into the Nanoverb. Nothin.

I know the nanoverb and the cable works b/c i tried the exact same setup but running the TRS into the INSERT on my mixer and all is well.

Any ideas? I've tried both Channel 1 and Channel 2 on the PAS and I still get no sound. The gain LEDs light on the PAS, but not the volume levels on the remote. Both of my inserts can't be bad, can they?
Actually, I had already thought I was being that dumb, so I've tried that. In fact, that's what prompted me to try the setup in the mixer, to make sure I had it right.

After doing some searching late last night, I think it's that the channel volume may have been too low. I didn't realize that the inserts were post channel volume. I'll try again tonight.

But if I'm getting plenty of volume without the Nanoverb, shouldn't it be set at the right level already?
Hi Skillydally,

No suggestion here about 'dumbness'.

Here is the way the signal flow works with an insert cable and our Bose Systems (and this is *not* the same as a typical Mackie mixer).

I think you are correct about the volume. That is, if the gain and volume settings are appropriate on the Power Stand without the Nanoverb. If the Channel Volumes are low then there may not be enough signal going to the the Input of the Nanoverb.

Here's an illustration of the signal flow from the Insert Point. Yes - the 'send' is post Trim and Channel Volume.

-- click image to see it in context --

This isn't exactly applicable to your situation, but does confirm where the Insert point is, in the path of the signal.
Be careful using a NanoVerb in the insert. I used one quite a bit when I first got my Bose. I had several times when my volume would fluctuate unexpectedly - gradually getting lower & lower & then coming back up. I finally traced it back to the NanoVerb. I may have a defective unit, but I have used this NanoVerb in an effects loop many times without notcing this problem. For clarity this was using the NanoVerb only in the insert in "replace" mode as it were.
Ok, so here's what I figured out:

1) I DID have the wires reversed.

2) The channel volume was too low.

Ok, so first thing is, why the heck is the Bose backwards? I ran the FX on my Samson mixer
s inserts, and it worked with the cable marked SEND into the Nanoverb INPUT. But on the Bose, I have to run the SEND into the OUTPUT. What up?

Secondly, why is the channel volume need to be different? I had to make no adjustments on the mixer, but on the Bose I had to run channel volume and the input on the Nanoverb very hot before I got a response.

This makes me question the inserts greatly on the Bose. Still thinking, are mine defective?

To be honest, I've ditched the insert method and gone to running an AUX from the mixer into the Nanoverb and then into Channel 3 on the PAS. This allows me a comepletly dry signal, and just a hint of the FX. I like this approach better.

But I still gotta know, whatup with my inserts?
Hi Skillydally,

Ok, so first thing is, why the heck is the Bose backwards?

I can't speak for Bose about this, but I am glad they chose to wire the Inserts the way they did. It gives you access to an output from the system that you can access with an ordinary 1/4" cable (using the half-insert method). You can do this without interrupting the signal flow. If it was wired the way your mixer is wired, you would not be able to tap the signal this way.

This gives us the opportunity to do effects in parallel (vs. the serial method described at the beginning of this discussion). You could pick up the signal using the half-insert method, run to an outboard processor and return the signal through Channel 3 or 4.

For the other questions - comparing the levels to what happens with your mixer - there are a lot of variables at play so it's tough speculate about what is happening.

A wild guess, is that the effects send on the mixer is 'pre-fade' (tapped immediately after the input trim and unaffected by the fader). Using similar terminology, the output at the Insert Point on the Bose System is 'post-fade' (after the Channel Volume control).

The XLR Line Out on the Bose System would be the closest thing to a pre-fader output.

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