Speaker Impedance Curve Description

[Darrin66]

Are the SIC’s documented anywhere? I’m using an OH G12H30 4x12 IR and I’d like to match the SIC in the Amp block. One of the available curves is Basketweave, but there are a bunch of Basketweave cab IR’s. One is a H30 but there are also other greenbacks. I poked around a bit, sorry if this is common knowledge.

 

[jrayjr]

Not to my knowledge, but i could be wrong.
If i use a G12H speaker i just use the G12H SIC that sounds the best, and one of the G12H/Basketweave/Greenback will sound the best.
Edit: I really dig the 2x12 65 Bassguy SIC with Greenbacks, give it a try, its more neutral.

 

[Red Solo Cup]

Are the SIC’s documented anywhere? I’m using an OH G12H30 4x12 IR and I’d like to match the SIC in the Amp block. One of the available curves is Basketweave, but there are a bunch of Basketweave cab IR’s. One is a H30 but there are also other greenbacks. I poked around a bit, sorry if this is common knowledge.

https://wiki.fractalaudio.com/wiki/index.php?title=Amp_block#Speaker_Impedance_Curves_list

 

[Darrin66]

https://wiki.fractalaudio.com/wiki/index.php?title=Amp_block#Speaker_Impedance_Curves_list

Thanks!!

 

[VidarAus]

I was really set on trying to match Impedance Curves to IRs I was using for a good while. I have since started to view it as a powerful tone and feel shaping setting and pick whatever Curve works best regardless of what it is called. Has worked out well.

 

[Orvillain]

Does anyone know if there is a decent tutorial on how to measure a real cabs speaker impedance curve?

 

[OrganicZed]

Does anyone know if there is a decent tutorial on how to measure a real cabs speaker impedance curve?

I suggest asking @dr bonkers.

 

[dr bonkers]

I suggest asking @dr bonkers.

This is the unit I use that has decent instructions:

https://www.google.com/url?sa=t&sou...cQFnoECA8QAQ&usg=AOvVaw2KiG9FJ97ybEKxq2CSoCAX

 

[dr bonkers]

If you don't want to download from their site due to isp issues, here it is!

 

[Darrin66]

I have a question. Why does the description of the SIC’s in Wiki mention the cab (4x12)? Is that because the measurements were taken by plugging into a 4x12 and using all 4 speakers instead of 1? Cab response/frequency simulation is done/added in the IR, correct? Asking because I have a single pre role G12H30 that sounds great and I’d probably pick up this hardware and generate the curve. But then Cliff would have to agree to add it though, so there’s no guarantee that it would make it into the unit, if he didn’t like it/etc, correct?

 

[Orvillain]

Thanks @dr bonkers @OrganicZed !

 

[dr bonkers]

I have a question. Why does the description of the SIC’s in Wiki mention the cab (4x12)? Is that because the measurements were taken by plugging into a 4x12 and using all 4 speakers instead of 1? Cab response/frequency simulation is done/added in the IR, correct? Asking because I have a single pre role G12H30 that sounds great and I’d probably pick up this hardware and generate the curve. But then Cliff would have to agree to add it though, so there’s no guarantee that it would make it into the unit, if he didn’t like it/etc, correct?

Correct

 

[OrganicZed]

@Darrin66 speaker impedance curves change depending on the cabinet that was used. The exact same speaker will measure differently in an open back vs closed back cabinet for example.

https://audiojudgement.com/speaker-impedance-curve-explained/