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HE-500, LCD2, D5000, DT770, SR80, on a speaker amp (Emotiva mini-X A-100) Project - Page 253

post #3781 of 3788
Quote:
Originally Posted by ZeXoN View Post
 

Hi,

 

I have connected my HE 500 to my amp ( ARC V70 ). But have not read all the 252 pages but a lot of it :)

My concern is should I ad a resistor to match 8 ohm or not, should I just leave it and play?

 

Kindly Regards

 

Jan

From what I've read so far you shouldn't need any resistors unless you start throwing more power at it

post #3782 of 3788
But is the load not too much for the amp?
As I can see on page 6 and a couple of pages forward some suggest one or more resistors.
I'm about to buy a case to house the plug and wires to the amp 😊
So could I order the resistors the same time 😉


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post #3783 of 3788

You're experiencing a common confusion about load impedance and "load".

 

The "load" is greater when the impedance of the load is LOWER - because, for a given voltage, the lower the impedance, the HIGHER the amount of current, and the GREATER the amount of power, that is required to drive it. So, for example, an 8 ohm speaker is much MORE of a load than a 32 ohm pair of headphones, and a 600 ohm pair of headphones is a very light load (and I've never heard of a pair of headphones that had an impedance of less than the 4 0hms that most amplifiers are rated to run quite happily). Therefore, for pretty much any speaker amplifier, a pair of headphones is a very minimum load...

 

The reason for the resistors is that all amplifiers have a minimum base amount of noise at their output. Since headphones are usually much more sensitive than speakers, an amount of hiss that might be totally inaudible with speakers might be annoying with headphones. The resistors reduce both the signal level and the noise; this reduces the level of the potentially annoying noise; since the amplifier can deliver lots more signal than the headphones need, the fact that the resistor reduces the signal by the same amount doesn't really matter much at all.

 

 

 

Quote:

Originally Posted by ZeXoN View Post

But is the load not too much for the amp?
As I can see on page 6 and a couple of pages forward some suggest one or more resistors.
I'm about to buy a case to house the plug and wires to the amp 😊
So could I order the resistors the same time 😉


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post #3784 of 3788
So you will recommend not to buy a set off resistors and just play happily on?


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post #3785 of 3788

There are two reasons why you would want to add resistors:

 

1) If there is a steady background hiss that is always there, and is annoying enough for you to want to fix it.

 

2) If the amplifier's gain is so high that you can only move the volume control a tiny way up before you reach normal listening levels, and so you can't control the volume very well, or there is a channel mismatch (which is normal with the volume control just a few degrees off the bottom stop).

 

As long as you're not having either of these problems, then you don't need extra resistors.... :beerchug:

 

Quote:

Originally Posted by ZeXoN View Post

So you will recommend not to buy a set off resistors and just play happily on?


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post #3786 of 3788
Thanks for the reply and it gives a lot of sense 😊
I have tried it out and there is no background noise and the volume knob have a lot of control like on my MagnePlanar 1.6 does 👍
So I think I'm good with out resistors 😎


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post #3787 of 3788

For those who paired the Emotiva Mini with he-500's, have you upgraded your Mini to another Amp or stuck with it?

post #3788 of 3788
Quote:
Originally Posted by fluidz View Post
 

For those who paired the Emotiva Mini with he-500's, have you upgraded your Mini to another Amp or stuck with it?

Im still using the Mini-X. Still havent found anything I like better for the HE-500s. Just got a Lyr and tried that that with the HD-650s and the HE-500s. Pretty sure the Lyr is getting sold. The Bottlehead Crack is still my pair with the HD-650s and the Mini-X with the HE-500s.

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