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HE-500, LCD2, D5000, DT770, SR80, on a speaker amp (Emotiva mini-X A-100) Project - Page 169

post #2521 of 3792

Yes, definitely off and unplugged would be safer.

post #2522 of 3792

Here's a graphic for a single-ended headphone resistor network interface:

 

Single-Ended Headphone Network

Headphone_Resistor_Netwrok_Single-Ended_Preferred.jpg

The headphone cable's shield carries the combined common ground negative signal.

A 5 watt 6 ohm Resistor2 and 3 watt 2 ohm Resistor3 will work best for the vast majority of headphones and speaker amps. The resistors should be wirewound non-inductive and cost about $2 each at Mouser.com.


Edited by robrob - 12/6/13 at 11:14am
post #2523 of 3792
Quote:
Originally Posted by john57 View Post
 

off

Quote:
Originally Posted by robrob View Post
 

Yes, definitely off and unplugged would be safer.

Thanks :beerchug: 

post #2524 of 3792
Anybody got ideas on a cheap chassis for such a speaker adapter configuration?
post #2525 of 3792
Quote:
Originally Posted by davidsh View Post

Anybody got ideas on a cheap chassis for such a speaker adapter configuration?

http://www.net32.com/images/disposables/kleenex-facial-tissue-21400.jpg ? lol

post #2526 of 3792

I'd go for a cigar box

post #2527 of 3792
post #2528 of 3792

 

Wow, $15 shipping. Just go to your local cigar shop, they'll most likely be selling their empty cigar boxes for a buck or two each.

post #2529 of 3792
Quote:
Originally Posted by Taowolf51 View Post

 

Wow, $15 shipping. Just go to your local cigar shop, they'll most likely be selling their empty cigar boxes for a buck or two each.


This. 

post #2530 of 3792
Quote:
Originally Posted by davidsh View Post

Anybody got ideas on a cheap chassis for such a speaker adapter configuration?

 

I went with a black plastic 4"x5"x1.5" project box. It's not fancy but it gets the job done. I think I got it at MCM. With the connectors mounted on the long sides there's plenty of room for 5-way speaker terminals (space them at 3/4" for dual banana compatibility). The distance from XLR to speaker terminals is short enough you can use the resistor leads to make the connections simplifying your life quite a bit.

 

Adapter_Box.jpg


Edited by robrob - 12/6/13 at 7:16pm
post #2531 of 3792

just received my HE-500 yesterday and looking for an amp for it.

Originally thinking of getting Schiit Lyr but

MalVeauX said it has almost the same sound as Lyr if not better here, and

Emotiva is having a sale on the mini-x A-100 for $169, it is a very pretty attractive price.

Is that as low as it could get?

 

I also like the option for having a speaker amp for expansion purpose if I get some passive speakers later on.

 

It seems that there is a noise issue? Is it affecting HE-500? How bad and any fix?

post #2532 of 3792
Quote:
Originally Posted by chanwhk View Post
 

Emotiva is having a sale on the mini-x A-100 for $169, it is a very pretty attractive price.

Is that as low as it could get?

 

I also like the option for having a speaker amp for expansion purpose if I get some passive speakers later on.

 

It seems that there is a noise issue? Is it affecting HE-500? How bad and any fix?

 

I don't think the mini-x will ever go below $169.

 

The HE-500 is pretty efficient so some people hear some hiss, usually only when no music is playing. If it's too much for you you can add 50 to 100 ohm resistors in series to the headphone's L+ and R+ lines to add attenuation and lower the perceived noise floor.


Edited by robrob - 12/7/13 at 5:53am
post #2533 of 3792

FWIW, I don't hear any noise on my Mini-X with my HE-500's until I get the volume knob up to about 2 o'clock.  And there is no way I would be listening to music at that volume.

post #2534 of 3792
Quote:
Originally Posted by robrob View Post
 

 

I don't think the mini-x will ever go below $169.

 

The HE-500 is pretty efficient so some people hear some hiss, usually only when no music is playing. If it's too much for you you can add 50 to 100 ohm resistors in series to the headphone's L+ and R+ lines to add attenuation and lower the perceived noise floor.

 

Thanks for the reply. Good to know that its the best deal for it.

Probably will give up the Schiit for these.

Does any other emotiva amp works with the HE-500?

Like XPA-200 or UPA-200 or would it be too much power for it.

Might want more than 50W for future speakers upgrade. Usually need like 150W I think.

post #2535 of 3792
Quote:
Originally Posted by goaliedad39 View Post
 

FWIW, I don't hear any noise on my Mini-X with my HE-500's until I get the volume knob up to about 2 o'clock.  And there is no way I would be listening to music at that volume.

 

Good to know that. What source are you using in that setup?

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