Captor X - Using with a cab + Impedance Curve

D

DylanWad

New member
Hello

I've chosen to do my Uni dissertation about Guitar Cab Impulse Responses. I own the Captor X 8ohm, which will I will be using to conduct some tests to gather some data later on in my research. I have a few questions about the Captor X and I'm hoping the answers will help clarify a few things before going forward with the tests.

1/ I have a Valve Amp head with 16ohm and 8ohm options for the speaker out and I also have a 16ohm Cab. If I output from the AMP OUTPUT (16ohm) into the Captor X then take the SPEAKER OUT of the Captor X into the Cab (16ohm) but leave the Attenuation setting of the Captor X on 'FULL' is this safe? From what I can gather from the Two Notes site, this will bypass the load of the Captor X and instead take its load from the cabinet. Does this mean that the fact the Captor X being an 8ohm load becomes irrelevant in terms of Impedance matching?

2/ If the above is correct and safe, does this also mean I can still use the Captor X to take a copy of the amp's signal and record it? And will the impedance curve on this signal be primarily from the load of the cabinet?

3/ I saw in a previous thread that the impedance curve of the Captor X's load is a 'U' shape rather than the expected shape produced by real cabs and some other load boxes. But it was then explained that there is some post processing EQ applied to this to correct it. I was wondering if this corrective EQ is consistent or does it change depending on what DynIR you're using?

4/ Depending on the answer to the last question, what speaker(s)/cab(s) is the Captor X's 'dummy' reactive load/impedance curve based on?

Thank you
Dylan
 
Good morning Dylan,

I hope all is well and thank you for getting in touch - Ross from Two notes here!

Please see answers to your questions below...

1/ I have a Valve Amp head with 16ohm and 8ohm options for the speaker out and I also have a 16ohm Cab. If I output from the AMP OUTPUT (16ohm) into the Captor X then take the SPEAKER OUT of the Captor X into the Cab (16ohm) but leave the Attenuation setting of the Captor X on 'FULL' is this safe? From what I can gather from the Two Notes site, this will bypass the load of the Captor X and instead take its load from the cabinet. Does this mean that the fact the Captor X being an 8ohm load becomes irrelevant in terms of Impedance matching?
  1. This is completely safe and correct!
2/ If the above is correct and safe, does this also mean I can still use the Captor X to take a copy of the amp's signal and record it? And will the impedance curve on this signal be primarily from the load of the cabinet?
  1. Yes indeed
3/ I saw in a previous thread that the impedance curve of the Captor X's load is a 'U' shape rather than the expected shape produced by real cabs and some other load boxes. But it was then explained that there is some post processing EQ applied to this to correct it. I was wondering if this corrective EQ is consistent or does it change depending on what DynIR you're using?
  1. This is dependant on both the DynIR virtual cabinet selected and the EQ Post FX block included in the Torpedo Remote Hardware
4/ Depending on the answer to the last question, what speaker(s)/cab(s) is the Captor X's 'dummy' reactive load/impedance curve based on?
  1. The curve you are referring to is not the same as the EQ options discussed above. The Curve that is used in Captor X's internal reactive load is a U shape and cannot be changed; the EQ options outlined above are used instead to add additional character to the signal post the reactive load to ensure a closer match with a real world cabinet.
Please let me know if this helps and if you need anything else, please do not hesitate to let me know!
 
RossJohnDavies said:
Good morning Dylan,

I hope all is well and thank you for getting in touch - Ross from Two notes here!

Please see answers to your questions below...

1/ I have a Valve Amp head with 16ohm and 8ohm options for the speaker out and I also have a 16ohm Cab. If I output from the AMP OUTPUT (16ohm) into the Captor X then take the SPEAKER OUT of the Captor X into the Cab (16ohm) but leave the Attenuation setting of the Captor X on 'FULL' is this safe? From what I can gather from the Two Notes site, this will bypass the load of the Captor X and instead take its load from the cabinet. Does this mean that the fact the Captor X being an 8ohm load becomes irrelevant in terms of Impedance matching?
  1. This is completely safe and correct!
2/ If the above is correct and safe, does this also mean I can still use the Captor X to take a copy of the amp's signal and record it? And will the impedance curve on this signal be primarily from the load of the cabinet?
  1. Yes indeed
3/ I saw in a previous thread that the impedance curve of the Captor X's load is a 'U' shape rather than the expected shape produced by real cabs and some other load boxes. But it was then explained that there is some post processing EQ applied to this to correct it. I was wondering if this corrective EQ is consistent or does it change depending on what DynIR you're using?
  1. This is dependant on both the DynIR virtual cabinet selected and the EQ Post FX block included in the Torpedo Remote Hardware
4/ Depending on the answer to the last question, what speaker(s)/cab(s) is the Captor X's 'dummy' reactive load/impedance curve based on?
  1. The curve you are referring to is not the same as the EQ options discussed above. The Curve that is used in Captor X's internal reactive load is a U shape and cannot be changed; the EQ options outlined above are used instead to add additional character to the signal post the reactive load to ensure a closer match with a real world cabinet.
Please let me know if this helps and if you need anything else, please do not hesitate to let me know!
Click to expand...

Hi Ross

Thank you for responding, this info is very helpful.

Regarding the U Shape Impedance Curve of the Captor X, I understand that the DynIR choice and EQ Post FX block are for applying the character of real world cabs/speakers and to further tweak to taste.

But is there any immediate processing applied to the Impedance Curve of the Captor X's reactive load to correct the 'U Shape'?
For example if I loaded in my own IR on the Captor X, would the impedance curve on the signal still be 'U Shaped'? Or would that signal have had some form of correction pre-reaching the IR Loader/DynIR section of the signal path?

Thanks again
Dylan
 
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