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HE-500, LCD2, D5000, DT770, SR80, on a speaker amp (Emotiva mini-X A-100) Project - Page 239

post #3571 of 3790

Soooo bumping this: 
What are the best speaker amp options for non-US residents? 
I've heard Topping TP60 but unsure... something around the same price of the Emotiva is preferable

post #3572 of 3790
Quote:
Originally Posted by nehcrow View Post

Soooo bumping this: 

What are the best speaker amp options for non-US residents? 

I've heard Topping TP60 but unsure... something around the same price of the Emotiva is preferable

I can personally recommend as used Cyrus 1/2/3 integrated. Very reasonable on the used market, small form factor and excellent sounding.

I have owned the 1 and currently own the 3. Very good amps for driving the HE500.
post #3573 of 3790
Quote:
Originally Posted by DanPluck View Post

I can personally recommend as used Cyrus 1/2/3 integrated. Very reasonable on the used market, small form factor and excellent sounding.

I have owned the 1 and currently own the 3. Very good amps for driving the HE500.

Noise floor? How's it in that regard? I see specs around 84-86 dB S/N ratio at 1W output, not that good.

 

Looking at 'Straight Line' it specs at 107 dBA at 500 mV which seems overly impressive if it's through the loudspeaker terminals


Edited by davidsh - 6/6/14 at 8:28am
post #3574 of 3790
Quote:
Originally Posted by davidsh View Post

Noise floor? How's it in that regard? I see specs around 84-86 dB S/N ratio at 1W output, not that good.

Looking at 'Straight Line' it specs at 107 dBA at 500 mV which seems overly impressive if it's through the loudspeaker terminals

Absolutely silent, black or whatever word you want to use. Please remember Cyrus are a very well respected brand, who build a quality product.

I let you don't like it you will get your money back by selling it.
post #3575 of 3790

Robinette Box V3 Layout Diagram

Robinette_Box_V3.png

More info on the Robinette Box here.

post #3576 of 3790
Quote:
Originally Posted by robrob View Post
 

Robinette Box V3 Layout Diagram

Robinette_Box_V3.png

More info on the Robinette Box here.

I'm sorry is this just to add resistance to the signal? Would the HE-500 benefit from this or is it just for more sensitive headphones

post #3577 of 3790
Quote:
Originally Posted by nehcrow View Post
 

I'm sorry is this just to add resistance to the signal? Would the HE-500 benefit from this or is it just for more sensitive headphones

It depends on the amp and the headphone. The HE-500 is a pretty sensitive high-end headphone.

 

Many solid state amps work fine when headphones are connected directly to their speaker taps. The resistor network in the above interfaces can solve 3 problems:

 

1. Volume control is too sensitive--slight movement gives too much volume. The attenuation provided by the resistor network can make the knob more useable.

 

2. Noise floor hiss--with some amps like the Mini-X you can hear hiss during quiet music passages. Attenuation can help eliminate it.

 

3. Amp to headphone impedance mismatch--is usually more of a problem with tube amps. The resistor network gives the amp its expected 8 ohm speaker load.

 

I recommend people try their solid state amps connected directly to the speaker taps before worrying about an interface. You may not need one at all.

 

Rob

post #3578 of 3790
Quote:
Originally Posted by nehcrow View Post
 

I'm sorry is this just to add resistance to the signal? Would the HE-500 benefit from this or is it just for more sensitive headphones

i built a box for my HE-500 and HD800 to use with a pair of tube monoblocks. impedance matching is more critical for tube amps so the resistor network is crucial not to damage the amp...indeed, it works well with the HE-500. i have more useable play with the volume from the preamp...

post #3579 of 3790
Quote:
Originally Posted by robrob View Post
 

Here's a basic layout for a speaker tap to headphone adapter for the Mini-X:

 

Basic Speaker Amp to Headphone Adapter - Single Ended TRS

Speaker_to_Headphone_Attenuator_TRS.png

This type of adapter is only for amplifiers that have their negative speaker terminals tied together (common ground) like the Mini-X.


how different would it be for an amp without common ground?

post #3580 of 3790
Quote:
Originally Posted by bassboysam View Post


how different would it be for an amp without common ground?

You would need the interface with the 4-Pin XLR or the V3 Robinette Box, both are posted above.

post #3581 of 3790
Quote:
Originally Posted by bassboysam View Post
 


how different would it be for an amp without common ground?

 

Don't do it. You know that scene in Ghostbusters where they tell you don't cross the streams? Don't do it.

 

Hell, for the sake of all who don't know how to read the diagrams or don't know what they mean, just don't ever build anything that connects four conductors into three. Build 4 into 4 and you'll be ok for the most part (or at least less-oopsie-go-boom than others). Reterminate your headphones in a 4-pin whatever, then make a headphone adapter that takes it down to TRS. All bananas to TRS(f) should be abolished.

post #3582 of 3790
Quote:
Originally Posted by Armaegis View Post
 

 

Don't do it. You know that scene in Ghostbusters where they tell you don't cross the streams? Don't do it.

 

Hell, for the sake of all who don't know how to read the diagrams or don't know what they mean, just don't ever build anything that connects four conductors into three. Build 4 into 4 and you'll be ok for the most part (or at least less-oopsie-go-boom than others). Reterminate your headphones in a 4-pin whatever, then make a headphone adapter that takes it down to TRS. All bananas to TRS(f) should be abolished.


I already have the cable but I'd like to add some resistors to get more "play" with the volume on my Fiio A1.

post #3583 of 3790
post #3584 of 3790


interesting, so would you put the attenuators between the DAC and amp?


Edited by bassboysam - 6/7/14 at 2:45pm
post #3585 of 3790
Quote:
Originally Posted by bassboysam View Post


interesting, so would you put the attenuators between the DAC and amp?

Yup. On the amp side between the two. You don't want to attenuate the signal before it has to travel across the wire to your amp.
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