[LTDJ]

If it works normally when plugged then it is your battery that is dead look on youtube at michael bruce channel he replaced the battery on the cheap wuth a higher capacity

Unfortunately it doesn't work when plugged in. It only comes to life when I plug it in doing the factory reset, and even then it doesn't behave normally i.e. doesn't work. It only flashes the led and plays the chime at 2x the speed/pitch, but it doesn't react to input or connect via bluetooth.

Since I have nothing to lose, I took it apart yesterday and disconnected the battery but to no avail. So it looks like it's fried. Funnily enough it originally started misbehaving when I plugged it in for charging - originally I thought I destroyed the micro USB port but it looks more like the charger might have contributed to this.

 

[redrol]

If it works normally when plugged then it is your battery that is dead look on youtube at michael bruce channel he replaced the battery on the cheap wuth a higher capacity

Im still rocking that battery. Its down to around 13-14 hours at this point. Still after like 4-5 years my OG unit is still rocking and beat down.

 

[navii]

Could someone help me out please. I am trying to figure out the ES100s pre amplifier output power figure to feed my amplifier that has input sensitivity of 400mV (40kΩ). Thanks in advance.

 

[amanieux]

Could someone help me out please. I am trying to figure out the ES100s pre amplifier output power figure to feed my amplifier that has input sensitivity of 400mV (40kΩ). Thanks in advance.

i don't think es100 has preamp out

 

[plakat]

Could someone help me out please. I am trying to figure out the ES100s pre amplifier output power figure to feed my amplifier that has input sensitivity of 400mV (40kΩ). Thanks in advance.

Why not just get a 3,5mm to chinch (or whatever your amp uses as input) wire and try it out? Set the ES100 to min volume and slowly turn it up. That 40kOhm load should not be a problem.

 

[navii]

i don't think es100 has preamp out

It has this:

 

[navii]

Why not just get a 3,5mm to chinch (or whatever your amp uses as input) wire and try it out? Set the ES100 to min volume and slowly turn it up. That 40kOhm load should not be a problem.

Thanks for your suggestion. Turn it up till what happens? I actually blew a tweeter by overloading the input using my Topping G5. So this time I want to make sure I am doing it as close to the specifications as possible.

The ES100 app has some calculations / settings in vrms, but the input on the amp is rated in mW.... And I am clueless about all that.

 

[plakat]

Those calculations won’t help much for a line level input…
When starting out with volume 0, increasing volume slowly until you reach your listening level shouldn’t kill your speakers. Well, depends on your listening level of course

 

[navii]

Those calculations won’t help much for a line level input…
When starting out with volume 0, increasing volume slowly until you reach your listening level shouldn’t kill your speakers. Well, depends on your listening level of course

Thank you for your help. I see what you are saying. I forgot to mention that the amp has its own volume controls.

If I understand correctly, your suggestion would be to have the amplifier at full or near full volume and control the loudness / volume level using the ES100?

 

[plakat]

Thank you for your help. I see what you are saying. I forgot to mention that the amp has its own volume controls.

If I understand correctly, your suggestion would be to have the amplifier at full or near full volume and control the loudness / volume level using the ES100?

You can try both ways, the other one near max volume. But at first I'd set the amp to maybe half just to be on the safe side. Once you hear something through your speakers you can adjust the amp maybe up to 3/4 and then control volume through the ES100. Don't forget to mute the amp or reset volume to 0 before connecting/disconnecting the cable on the input or the ES100.

 

[navii]

You can try both ways, the other one near max volume. But at first I'd set the amp to maybe half just to be on the safe side. Once you hear something through your speakers you can adjust the amp maybe up to 3/4 and then control volume through the ES100. Don't forget to mute the amp or reset volume to 0 before connecting/disconnecting the cable on the input or the ES100.

Thanks for your help! Ill give it a go

 

[Chupi383]

That "Disable/Preamp/Headphone Amp" setting only selects the output level estimation calculation in the app -- the thing that if you put in the correct impedance and sensitivity for your headphones, will tell you how many decibels a max-volume sound file will be with the volume set how it is. Changing this setting doesn't make any difference to the actual output signal or the voltage or current used.

 

[amanieux]

It has this:

it does not change sound it is an estimator (a in app calculator) it just displays values in the user interface

 

[BobJS]

it does not change sound it is an estimator (a in app calculator) it just displays values in the user interface

This is contrary to Head-Fi doctrine : EVERYTHING changes sound!

(Since sarcasm often does not come across well in a post, I will point out this statement is tongue-in-cheek)

 

[navii]

I'm more interested if the ES100 output power can be matched to my amp's input sensitivity.

To answer my own question. I believe that if I set the output on the ES100 to be 0.400 Vrms, it is the same as the 400mV input sensitivity of my power amp.

In my head Vrms and mV are like Kilos to Grams. But I don't know if I'm right as I don't understand the technical aspects.