[eke2k6]

Quote:

I do not understand the point of trying the impedance adapter? The asg2 being rather low impedance, there is not theoretical reason to add impedance earlier in the chain is there?

 
You're not actually adding impedance to the iem, but rather to the source. It's similar to how the TP affects low impedance iems. Adding the adapter to my iP4 would make it seem as I was using it  on a source with a 75 ohm output impedance, reducing the damping factor.
 
I think I might try to find a 33 ohm one.

 

[Mimouille]

You're not actually adding impedance to the iem, but rather to the source. It's similar to how the TP affects low impedance iems. Adding the adapter to my iP4 would make it seem as I was using it  on a source with a 75 ohm output impedance, reducing the damping factor.

I think I might try to find a 33 ohm one.

Yes I understand the principle, but addind impedance to the source you are potentially causing distortion no ?

 

[eke2k6]

Quote:

Yes I understand the principle, but addind impedance to the source you are potentially causing distortion no ?

 
Hm, that goes beyond my knowledge. I guess if you don't notice any from the TP's higher OI port, then there shouldn't be any here. I definitely don't notice any with the cable.

 

[Mimouille]

Hm, that goes beyond my knowledge. I guess if you don't notice any from the TP's higher OI port, then there shouldn't be any here. I definitely don't notice any with the cable.

The TP ruins any low impedance BA I have...no bass. Funily I tried adding impedance with an adapter and it reduced the effect...weird

 

[eke2k6]

Quote:

The TP ruins any low impedance BA I have...no bass. Funily I tried adding impedance with an adapter and it reduced the effect...weird

 
The ASG-2 has plenty to spare.
 
The second point is strange. I really don't know too much about the topic, just trying to replicate this damn cable.

 

[shotgunshane]

The TP ruins any low impedance BA I have...no bass. Funily I tried adding impedance with an adapter and it reduced the effect...weird

The TP reduces bass due to the capacitors in the output path, which is not related to the output impedance. The oi of 10 ohm on the TP will only be a problem with the worst of the multi ba's, like the TF10, that have ridiculous impedance curves. Many listen to the fostex hp-p1 with 10 ohm oi and ciems like the miracles and don't notice much difference.

Edit: forgot to add- I've never noticed any increase in distortion with added impedance.

 

[shotgunshane]

The ASG-2 has plenty to spare.

The second point is strange. I really don't know too much about the topic, just trying to replicate this damn cable.

Adding impedance after the TP would start to negate the effect of the caps in the output path, so to some degree it will lessen the effect of them.

 

[eke2k6]

Quote:

The TP reduces bass due to the capacitors in the output path, which is not related to the output impedance. The oi of 10 ohm on the TP will only be a problem with the worst of the multi ba's, like the TF10, that have ridiculous impedance curves. Many listen to the fostex hp-p1 with 10 ohm oi and ciems like the miracles and don't notice much difference.

Edit: forgot to add- I've never noticed any increase in distortion with added impedance.

 
PM incoming.

 

[flymetothemoon]

The TP reduces bass due to the capacitors in the output path, which is not related to the output impedance. The oi of 10 ohm on the TP will only be a problem with the worst of the multi ba's, like the TF10, that have ridiculous impedance curves. Many listen to the fostex hp-p1 with 10 ohm oi and ciems like the miracles and don't notice much difference.

Edit: forgot to add- I've never noticed any increase in distortion with added impedance.

So why Tera Player needs to add the capacitor in its output path while some daps don't need one and provide less than 1 ohm oi?

 

[Mimouille]

So why Tera Player needs to add the capacitor in its output path while some daps don't need one and provide less than 1 ohm oi?

I think due to its size it has no true amp section but the capacitors act as such...could be talking out of my rear end.

 

[eke2k6]

Quote:

Adding impedance after the TP would start to negate the effect of the caps in the output path, so to some degree it will lessen the effect of them.

 
Wait, so how does the ER4P to S adapter work? Does the ER4 series have uneven impedance characteristics?

 

[eke2k6]

Where is Inks when you need him?

 

[tinyman392]

Quote:

 
Wait, so how does the ER4P to S adapter work? Does the ER4 series have uneven impedance characteristics?

 
https://docs.google.com/viewer?url=http://www.innerfidelity.com/images/EtymoticER4PT.pdf?time%3D0
 
Yes it does...  Yes it does indeed XD 

 

[shotgunshane]

So why Tera Player needs to add the capacitor in its output path while some daps don't need one and provide less than 1 ohm oi?

Charles tuned the final TP model by ear. He thought caps in the line sounded better. He had a TP prototype with no caps and low oi and thought it sounded harsh and didn't like it.

Edit: I should add that old OTL amp designs must have caps in the output path but this is purely a subjective choice by Charles.

 

[shotgunshane]

Wait, so how does the ER4P to S adapter work? Does the ER4 series have uneven impedance characteristics?

From my understanding, many single armatures will become flatter with added OI. Whether that sounds good or not is another story.