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HE-500, LCD2, D5000, DT770, SR80, on a speaker amp (Emotiva mini-X A-100) Project - Page 242

post #3616 of 3660
The manual quotes 107 dB SNR at 1 watt, a weighted. Not bad nor good I think. Can do the calculations later.
post #3617 of 3660

So, calculated that equals 8dB into 90dB/mW, 32 ohm speakers. I used the stereophile measurements (106 dBA, 2.83V, 8 ohm, broadband). Hope that helps. The noise is 28 dB unweighted.

 

That is actually pretty good for such a high power amp. Won't guarantee that you get similar results, but mostly the noise is lowest at low volume settings after all.

 

It might be silent with no hiss, 8dB is very little noise. 


Edited by davidsh - 7/28/14 at 11:23am
post #3618 of 3660

Thanks to everyone for taking the time, I appreciate you offering me your thoughts. I think I will have the cable made. Why not have a balanced option? Plus I would think that the NAD should provide a very good amount of current. Thanks again.

post #3619 of 3660
Quote:
Originally Posted by Sonic Defender View Post
 

Thanks to everyone for taking the time, I appreciate you offering me your thoughts. I think I will have the cable made. Why not have a balanced option? Plus I would think that the NAD should provide a very good amount of current. Thanks again.

 

You need to make sure the ground for L and R are not tied together, if you want to used a balanced cable.  If they are  tied together there is no advantage of a balanced cable!

post #3620 of 3660
Quote:
Originally Posted by cute View Post
 
Quote:
Originally Posted by Sonic Defender View Post
 

Thanks to everyone for taking the time, I appreciate you offering me your thoughts. I think I will have the cable made. Why not have a balanced option? Plus I would think that the NAD should provide a very good amount of current. Thanks again.

 

You need to make sure the ground for L and R are not tied together, if you want to used a balanced cable.  If they are  tied together there is no advantage of a balanced cable!

Besides, you could blow amp and headphones.

post #3621 of 3660

That wouldn't do at all. Thank you both for the guidance, I will be sure to check into that before going ahead with the cable. I will actually contact NADs technical service department and get the info from there just to be 100% sure.

post #3622 of 3660

the other night I got brave and hooked my AKG Q701 directly to the speaker taps of my Mini-X that I have been using my my nearfield speaker rig. I cut the 3.5mm end off of the longer supplied cable that I never use and decided to hook it up. I used a multi-meter to figure out which color wire was ground, left, and right and quickly wired it up. It gets loud at the 8 o'clock position on the volume knob so there is barely any throw on the knob, but the knob has fine enough control to dial in the volume I desire so it works just fine. The other option at my disposal is to set a negative preamp level in the Equalizer APO program I use for system wide EQ. If I set a -6dB preamp level it gives me a bit better control of the volume which lets me bring it up to about 9 o'clock on the knob. It is almost dead silent with the music paused, so no unbearable hiss to speak of.

 

The sound is ridiculous. I haven't really used my Q701 in a long time, but I don't remember them sounding quite this good. Huge soundstage, great imaging, killer bass impact(for a Q701 anyway) and tons of detail. EQ'ing them with Equalizer APO is nice as well. I added just a touch of sub-bass, have a very narrow mild cut at 2k, another cut centered at 7k and then added a touch of sparkle centered at 14k. This is definitely the best I have heard the Q701.

 

 

post #3623 of 3660
Quote:
Originally Posted by jasonb View Post
 

the other night I got brave and hooked my AKG Q701 directly to the speaker taps of my Mini-X that I have been using my my nearfield speaker rig. I cut the 3.5mm end off of the longer supplied cable that I never use and decided to hook it up. I used a multi-meter to figure out which color wire was ground, left, and right and quickly wired it up. It gets loud at the 8 o'clock position on the volume knob so there is barely any throw on the knob, but the knob has fine enough control to dial in the volume I desire so it works just fine. The other option at my disposal is to set a negative preamp level in the Equalizer APO program I use for system wide EQ. If I set a -6dB preamp level it gives me a bit better control of the volume which lets me bring it up to about 9 o'clock on the knob. It is almost dead silent with the music paused, so no unbearable hiss to speak of.

 

The sound is ridiculous. I haven't really used my Q701 in a long time, but I don't remember them sounding quite this good. Huge soundstage, great imaging, killer bass impact(for a Q701 anyway) and tons of detail. EQ'ing them with Equalizer APO is nice as well. I added just a touch of sub-bass, have a very narrow mild cut at 2k, another cut centered at 7k and then added a touch of sparkle centered at 14k. This is definitely the best I have heard the Q701.

 

 

This speaker amp usage seems to be the rage these days. The HD 800 had a post as to how great that HP sounded with a JVC receiver. I myself use a speaker amp with the HE 4 and 6. The sound takes on a very deep, extended 3D quality no doubt.

post #3624 of 3660

I use the emotiva with all my cans, though I prefer my Stax amp over emotiva+srd-6 adapter.

post #3625 of 3660
Quote:
Originally Posted by kothganesh View Post
 

This speaker amp usage seems to be the rage these days. The HD 800 had a post as to how great that HP sounded with a JVC receiver. I myself use a speaker amp with the HE 4 and 6. The sound takes on a very deep, extended 3D quality no doubt.

I was originally using an old Pioneer SX-750 receiver to power a set of nearfield speakers and my headphones. Then I decided that I wanted to try the Emotiva Mini-X with my nearfield speakers. I noticed an improvement in sound so I sold the SX-750, which left me with no headphone amp. At first I didn't care as I really wasn't listening to headphones much, then eventually I wanted to at least have the option to use the cans I have, so I was on the verge of buying a Schiit Magni or Vali. Then one night I decided I might as well just try hooking the Q701 right to the speakers taps of my Mini-X just to see what it does instead of spending money on a cheap headphone amp. I never used the super long cable that AKG supplies with the Q701 so I figured I might as well hack it up and try hooking it to the speaker taps. The first night I simply put the stripped wires in the speaker taps. The results were very good, so the next day I went out and got some banana plugs so I could quickly and easily switch between my speakers and the headphones. So now my Mini-X is a dual purpose amp that makes the Q701 sound better than I've ever heard them, granted the only things I've plugged them into were a Fiio E17, and an old SX-750. 

post #3626 of 3660

A few posts back you can see how I wired my Q701 up to my Emotiva Mini-X speaker amp. At first I had just used the bare wire into the binding posts, then I got some Banana plugs and wired them up that way. My first attempt at making them look good and strong was a bit of a weak attempt. Well today I found some metal sleeves to press into the banana plugs since the Q701 wire is so tiny, and the Banana plugs accept up to a 12 gauge wire. I also got some heat shrink tubing. The sleeves with the smaller ID and the heat shrink tubing essentially allowed me to make some strong, and IMO some pretty decent looking strain reliefs. The heavy and all metal banana plugs coupled with the very small gauge wire of the Q701 cable seems a lot less fragile now. I left a little bit of the colored wire uncovered by the heat shrink tubing so I can tell which wires are which color so I know which is left, right, and ground when I hook it up. 

 

Let me know what you guys think, but I think it looks a hell of a lot better and stronger now:

 

post #3627 of 3660

Nice work on the cable Jason.

post #3628 of 3660
I was listening to the Q701 again last night on the Emotiva and it's really impressive. I'm liking this combo a lot.
post #3629 of 3660

Nice looking job with your cabling. I am totally stoked to do this with my NAD and I think the noise will be a non-issue, or at least I hope that is the case. I have e-mailed NAD tech support and am waiting to hear what they think. Great thread.

post #3630 of 3660
Quote:
Originally Posted by Sonic Defender View Post

Nice looking job with your cabling. I am totally stoked to do this with my NAD and I think the noise will be a non-issue, or at least I hope that is the case. I have e-mailed NAD tech support and am waiting to hear what they think. Great thread.
If NAD is true to their specs and your hearing isn't overly sensitive and your room isn't extremely quiet.. Then it's gonna be good. The emotiva has worse noise figures, and significantly so, supposing the specs for the mini-x is a-weighted, which they most likely are.
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