Herbert cutting out when I turn ART SLA2 on...? -solved-

[~Abstract~]

Running WDW with a Herbert and GMaj2 into ART SLA2 for the Wets.

If I only run dry, the Herbert sounds normal. When I turn the SLA2 on, the volume of the Herbert disappears. When I turn the SLA2 off volume reappears.


Thoughts?

Signal path:
Guitar into Herbert (output to 412)...parallel send to GMaj2, stereo sends to ART SLA2 to power two other 412s. Everything run with MIDI from GCP.

 

[i.ak]

Signal path:
Guitar into Herbert (output to 412)...parallel send to GMaj2, stereo sends to ART SLA2 to power two other 412s. Everything run with MIDI from GCP.

"Stereo sends to ART" = the stereo output(s) of GMaj2 or serial send of Herbert?

 

[Peter Diezel]

It seems you use the switchable send of the Herbert
and the G-Major is first in line before the ART, right ?

If you switch on the send, the G-Major input cuts
the send level. The input impedance of the G-Major
is too low. Please try a cheap Boss Delay pedal and it
will work flawlessly. We have a 4,7k output impedance
on the send jack. That´s tube amp industrial standart.

To avoid this mismatching you should insert a small
buffer amp between the send of the Herbert and the
input of the G-Major.

Another solution would be to use the non switchable
send and increase the master on the Herbert.

 

[~Abstract~]

Signal path:
Guitar into Herbert (output to 412)...parallel send to GMaj2, stereo sends to ART SLA2 to power two other 412s. Everything run with MIDI from GCP.

"Stereo sends to ART" = the stereo output(s) of GMaj2 or serial send of Herbert?

Stereo sends from the GMaj to the inputs of the ART.

It seems you use the switchable send of the Herbert
and the G-Major is first in line before the ART, right ?

Sorry, no, I'm using the Parallel loop send to the input of the GMaj. The parallel level is at 100%.

If you switch on the send, the G-Major input cuts
the send level. The input impedance of the G-Major
is too low. Please try a cheap Boss Delay pedal and it
will work flawlessly. We have a 4,7k output impedance
on the send jack. That´s tube amp industrial standart.

To avoid this mismatching you should insert a small
buffer amp between the send of the Herbert and the
input of the G-Major.

Another solution would be to use the non switchable
send and increase the master on the Herbert.

I'm going to go back and recheck all connections.

Thanks!

 

[~Abstract~]

...ok...

I was sorta running the parallel send to the output of the SLA2...got the #2wet and the parallel send cables mixed up.


oops.

It's fixed and sounds great again.

 

[Bato]

It seems you use the switchable send of the Herbert
and the G-Major is first in line before the ART, right ?

If you switch on the send, the G-Major input cuts
the send level. The input impedance of the G-Major
is too low. Please try a cheap Boss Delay pedal and it
will work flawlessly. We have a 4,7k output impedance
on the send jack. That´s tube amp industrial standart.

To avoid this mismatching you should insert a small
buffer amp between the send of the Herbert and the
input of the G-Major.

Another solution would be to use the non switchable
send and increase the master on the Herbert.

tc gmajor manual: Impendance (symm./asymm. 21 kOhm/ 13 kOhm
Diezel 4,7 kOhm


I thought Diezel amps need no loop buffering?!
But i can give it a try with my Lehle Sunday driver. Gmajor is a tone sucker.

Thanks for the idea!

 

[Peter Diezel]

There is an electronic rule:

The input of an unit should not affect the output of an other unit.
It should be 10 times higher. In this case 47 kohm or better 1 Mohm.

Our loop is buffered as described in the manual.

Please call me for further questions

 

[King Crimson]

Gmajor is a tone sucker.

Then you must have gotten a lemon. My g-major is completely transparent- engaged or disengaged.

 

[Bato]

There is an electronic rule:

The input of an unit should not affect the output of an other unit.
It should be 10 times higher. In this case 47 kohm or better 1 Mohm.

Our loop is buffered as described in the manual.

Please call me for further questions

47 kOhm!
In your first post you wrote 4,7 kOhm!!!

Now I understand.
I hooked my Sunday driver into the send. Noticed a very, very small difference.
The Lehle has got a TB switch so i was able to do some kind of a/b.

@ KG
It´s a matter of transparency it sounds more juicy without the gmajor.
I use a ts808 and the Sunday driver in front of the amp. It´s pretty close to the sound of a short cable to the input without any units in the loop.

 

[Peter Diezel]

There is an electronic rule:

The input of an unit should not affect the output of an other unit.
It should be 10 times higher. In this case 47 kohm or better 1 Mohm.

Our loop is buffered as described in the manual.

Please call me for further questions

47 kOhm!
In your first post you wrote 4,7 kOhm!!!

Now I understand.
I hooked my Sunday driver into the send. Noticed a very, very small difference.
The Lehle has got a TB switch so i was able to do some kind of a/b.

@ KG
It´s a matter of transparency it sounds more juicy without the gmajor.
I use a ts808 and the Sunday driver in front of the amp. It´s pretty close to the sound of a short cable to the input without any units in the loop.

4,7 kohm is the send of the amp.

47 kohm should be the input of the G-Major.

 

[Bato]

Now i don´t understand anything....

 

[Peter Diezel]

Please call Papa

 

[Mizati20]

Gmajor is a tone sucker.

Then you must have gotten a lemon. My g-major is completely transparent- engaged or disengaged.

Not sure I've ever typed this before, but I completely agree...