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Audio-gd Master-5/6/8/9 balanced head amp/ preamp - Page 54

post #796 of 876
Quote:
Originally Posted by tim3320070 View Post
 

The case is meant to get hot, the case is the heat sink. Also, are you using your headphones balanced or single ended? Single ended will have roughly half the volume output.

Hi Tim,

 

I've tried both balanced and SE - same sort of thing really.  The unit has been on for around 3 hours, and for the last 2 the temperature of the casing has been hot, but stable. So i guess you're right this is the way it's supposed to run.

post #797 of 876
If i may ask a couple of questions. And offer some advice.

First off if you can measure the temp in cel and farenhight include this in the email.
1-Next the M9 is total class A amp so it draws the same power if used or at idel . So 55 watts of heat just burning.
2-Next maybe a dumb question and not being rude. Are you stacking units ?
3-Next is the unit in a cabinet?
4-Next what is the ambient temp there ?
5- are you in preamp mode or headphone mode. Preamp will make less heat.
6- are you saying there is no control to volume at all? With headphones ?
7- the headphones must be balanced output from M9 or its half power.
Al
Edited by ALRAINBOW - 1/7/14 at 4:07pm
post #798 of 876

It's actually 1/4 the power if used single ended.

 

Also, what is "very hot"?

post #799 of 876
Thread Starter 
Quote:
Originally Posted by Steph86 View Post
 

Hi Tim,

 

I've tried both balanced and SE - same sort of thing really.  The unit has been on for around 3 hours, and for the last 2 the temperature of the casing has been hot, but stable. So i guess you're right this is the way it's supposed to run.

It's not the same at all- have you tried the headphones you mentioned with the 4-pin XLR jack? If those are plugged into the single ended jack, the volume levels you talk about seem about right.

post #800 of 876
Clem your so slick. 1/2 of each side = 1/4. Brilliant.

Al
post #801 of 876
Quote:
Originally Posted by ALRAINBOW View Post

Clem your so slick. 1/2 of each side = 1/4. Brilliant.

Al

 

Lol, no that's not the reasoning :p.

 

Single ended is 1/2 the voltage of Balanced.

Power is derived as P = V²/R (R being the load), so: PSE =  (VSE)² / R =  (½ VBAL)² / R = ¼ (VBAL)² / R = ¼ PBAL

 

Power is additive, so each side gets 1/4 the power but the resulting power is not 1/8, it's still 1/4.

post #802 of 876
Yes I forgot the p2. I forgot. And I also did not realize you meant it literally . You would never know I'm LISC electric al PE and electrical contractor sssshhhh. Don't tell anyone.
post #803 of 876
Iirc m9 has low and high power, low and high gain, exponential volume, and acss also has less gain. Many variables. I would expect m9 to run hotter than m6 which runs warm, so I would not be surprised if it ran hot. I think its normal for the sound to drop out while changing volume with music playing. Nothing sounds worrying to me.
post #804 of 876
Quote:
Originally Posted by Steph86 View Post
 

Hi all,

 

Just a quick question - My master-9 arrived today and i've hooked it up to my Master-7. I've got both units connected via ACSS so i'm aware the high and low gain feature isn't available, but is it correct that the volume on the m-9 should be at around 50 to power a pair of T50rp's or HE5-lE's or HE 400's?

 

Also i've got a stereo amp which is connected via RCA on the pre amp out. Where would be the best place to control the volume from? ie do I have the volume full on the stereo amp and control from the m-9 or via versa?

 

Any help would be much appreciated.

 

Regards

Steph

Don’t worry the case gets hot (but not so hot you get burned) and the volume is exponential like Clemmaster says. I play my LCD3 on my Master 9 (low gain) on 40-50 in balanced mood and need to go up to like 50-60 on Hifiman HE500 in SE. I don’t have an Audio gd dac and therefore no ACSS.

post #805 of 876
How do you like the M9?
post #806 of 876
Quote:
Originally Posted by Clemmaster View Post

How do you like the M9?

I love it =)

 

The Master 9 have now pushed more than 200 hours and I really love the sound from it. My imprecision is that It’s more extend in both the bas and treble, it’s much more dynamic and have a fuller sound then my Soloist with the LCD 3 and Hifiman HE 500.

 

The tonality is really good in my set up, with a rich and colorful presentation that have a warm sound then it’s on the record, but I wouldn’t say that it coloured. The transparency and resolution is good, but will probably be even better with a more refined IC like Audioquest sky. I maybe have one coming next week.

 

The sound has changed a little during the time I have had it at home. The depth in the sound stage is a bit deeper, the overall sound is fuller, more refined and organic now. The initial little bit of harshness in the high treble is now gone. I would say that is the musicality what have changed the most, maybe 10 % better and technicality with about 5 %. Al this from an already high level of musicality and technicality on the Master 9.

 

The Master 9 is IMHO clearly superior to my Burson Soloist and Graham Slee Solo ultra linear diamond edition on everything. Regarding dynamic much better.

 

My system: Jriver ---Audiophilleo 2 with pure power---Hegel HD 20---Audioquest panther---Master-9 --- Q cable french silk ---Audeze LCD 3/Hifiman He 500. I also have 4 power cords from LessLoss and a power strip from Furetech.

post #807 of 876
Quote:
Originally Posted by Articnoise View Post
 

Don’t worry the case gets hot (but not so hot you get burned) and the volume is exponential like Clemmaster says. I play my LCD3 on my Master 9 (low gain) on 40-50 in balanced mood and need to go up to like 50-60 on Hifiman HE500 in SE. I don’t have an Audio gd dac and therefore no ACSS.

I run ACSS and Master 9 with LCD3's (balanced) running around 40-50 as well.

post #808 of 876
Quote:
Originally Posted by ALRAINBOW View Post

If i may ask a couple of questions. And offer some advice.

First off if you can measure the temp in cel and farenhight include this in the email.
1-Next the M9 is total class A amp so it draws the same power if used or at idel . So 55 watts of heat just burning.
2-Next maybe a dumb question and not being rude. Are you stacking units ?
3-Next is the unit in a cabinet?
4-Next what is the ambient temp there ?
5- are you in preamp mode or headphone mode. Preamp will make less heat.
6- are you saying there is no control to volume at all? With headphones ?
7- the headphones must be balanced output from M9 or its half power.
Al


Hi al,

 

2 - both units are stacked on top of eachother - M9 on top of M7 but i'm using the supplied stick on insulation buttons on each foot to raise.

3 - the unit is not in a cabinet

4 - I'd guess its around 40 degrees stable

5 - Headphone mode - I can't use preamp mode to listen to headphnes right? I switch to pre amp mode to play music through my stereo amp. Which leads me to another questions am i supposed to have the stereo amp on full volume and control from the m9 or have the m9 on full volume and control from the stereo amp.

6 - I have control of the headphones, i'm just getting a popping sound when I'm adjusting the volume (through foobar only (KS)

post #809 of 876

Ahh - I just had a response from Kingwa, some questions we've already covered but it seems like my m9 is okay - only thing I have to try and fix is the popping noise i'm getting in Foobar (KS)

 

1 – the gain switch doesn’t seem to be making any difference to the level of the sound---------Yes, the ACSS is have the standard design so don't want change the gain, the RCA and XLR may have different level from other brands, so have the gain control can easy cooperate with other brands.

2 – with the most of my headphones I need to have the volume setting to around 50 is this correct – t50rp – he5le-he400---------The Master 9 have the exponent volume control, in the first 50 steps volume is very low for different sensitivity headphone and power amp easy control the volume.

3 – When I play music via foobar and KS I get popping noises through the headphones (this isn’t the clicking noises from the volume pot)------------Try different USB connect to the DAC, is the popping noise happen often?

4 – How hot is the master 9 supposed to get? Mine is getting very hot even the front and side panels? I am using a different power cable than the one provided could this be the reason?---------It is a pure class A amp so it is hot, but the temperature usually 50C on the chassis, don't worry this termperature  level, it is very low to the electric parts.

post #810 of 876
I can reccomended this , but you do not have to listen to what I am saying. I do stack them but with about 4 inches of space between them and a smal boxer fan on the lower half unit witch ever one that is. In this way nothing gets hot just warm. When I did it as kingwa said , it was hot enough for me to smell the electronics cooking. To hot for me to use this way. Now this is just my opinion. And yes pick one volume control only all others should be turned up to max. Example would be to use the volume control of M9 only. Volume controls tend to rob you of audio performance .
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