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HE-500, LCD2, D5000, DT770, SR80, on a speaker amp (Emotiva mini-X A-100) Project - Page 237

post #3541 of 3639
Quote:
Originally Posted by Hutnicks View Post
 


None to healthy for the amp either. The 2050 runs hot as a pistol as it is.

So the conclusion is I shouldn't run single-ended headphone on balanced output amp by adding resistor, but running SE headphone on unbalanced speaker amp or balanced headphone on balanced speaker amp either directly or 'resisted' at 8 ohms are just okay?

Just to update a bit on some 'facts' when I run SE headphone on the box. If I used low value resistor for both L- & R-, I think the SQ about the same on both direct or resisted, But if i used higher value of resistor, say 5 times higher, the sound borked. In all cases it still produce hiss but very weak. I run my TP22 for more than an hour in this mode, but the heat from the alloy case cannot fried egg. May be next time I use thermometer to monitor the heat from the TK2050 IC.

Anyway, thanks for the advise

post #3542 of 3639

Also you will not get the best channel separation when you using a single ended headphones on a balanced or bridged because you would also be mixing the left with the right.

post #3543 of 3639
Just finishing making some cables. It was super easy. I recommend others try it too. Using Mogami shielded quad cables, solder one blue cable to the tip terminal, another blue cable to the ri terminal, and both white cables to the gr terminal. Reassemble the nuetrik 1/4 female adapter, it should be a near perfect fit. On the other end of the cable, attach red banana clips to the blue cables and white cables to the black banana clip. Test connectivity with voltmeter. Done!!! Sounds way better than the radioshack 1/4"female to RCA cable I mutiliated for a makeshift adapter.






A have a couple extra for sale if anyone is interested.
post #3544 of 3639

I'll pair the Emotiva a-100 with Schitt Modi for the HE-500. Any inputs ?

post #3545 of 3639
Quote:
Originally Posted by Mosabexo View Post

I'll pair the Emotiva a-100 with Schitt Modi for the HE-500. Any inputs ?
Volume control will be poor, worst case low level listening will not be possible. You might experience hiss too.
post #3546 of 3639
Quote:
Originally Posted by Mosabexo View Post
 

I'll pair the Emotiva a-100 with Schitt Modi for the HE-500. Any inputs ?


I pair mine with an UberFrost and its been awesome so far. Though I do attenuate the signal coming out of the mini-X and into my headphones.

post #3547 of 3639
Quote:
Originally Posted by davidsh View Post


Volume control will be poor, worst case low level listening will not be possible. You might experience hiss too.

Had the exact same setup for a few months.

No issue with hissing but yeah, volume control is a little fiddly. Slight movements of the dial = quite big movements in volume 
But SQ is top notch! Kind of miss my old rig now... :(

post #3548 of 3639

Would these 10ohm resistors work to attenuate a Fiio A1?  http://www.partsconnexion.com/resistors_mills_mra12.html

post #3549 of 3639

I had the A1 for a brief time. You can tap directly off the binding posts without resistors.

post #3550 of 3639
Quote:
Originally Posted by Armaegis View Post
 

I had the A1 for a brief time. You can tap directly off the binding posts without resistors.


What chipset does the A1 use?

post #3551 of 3639
Quote:
Originally Posted by Armaegis View Post
 

I had the A1 for a brief time. You can tap directly off the binding posts without resistors.

 

 

I currently am, but I don't have a lot of play with the volume control, was hoping that by adding some resistors would give me more control.

post #3552 of 3639
Quote:
Originally Posted by Hutnicks View Post
 


What chipset does the A1 use?

TI OPA2134 preamp, class D TFA9815T power amplifier.

post #3553 of 3639
Quote:
Originally Posted by bassboysam View Post
 

TI OPA2134 preamp, class D TFA9815T power amplifier.


I believe that TI actually makes a dedicated headphone out for that chipset. Wonder why they don't use it?

post #3554 of 3639

Well, after a month without using a full size amplifier as my headphone amp with the HE500's, i have come crawling back into the fray.  This time I'm using a Cyrus 3 amplifier and its magnificent, its also an excellent visual match for my A-GD Compass 2.  I can thoroughly recommend these little amps for us Euros who would have to pay crazy shipping/import duties on the Emotiva kit.CREATOR: gd-jpeg v1.0 (using IJG JPEG v62), quality = 100

post #3555 of 3639

Can anyone weigh in on the matching power of the Matrix M-Stage HPA-1 (2012 version with LM4562  with the He-500s?  I am specifically looking at this unit which is currently on e-bay.  If it is a good match I wouldn't mind purchasing it, but I would like to be sure of its performance with the He-500s in comparison with the Emotiva mini-x.  Here is the unit:

 

http://www.ebay.com/itm/Matrix-M-Stage-Headphone-Amplifier-LM4562-Ships-from-USA-/161307853328

 

Thanks

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