solderdude
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Post by solderdude on Jul 1, 2014 5:07:47 GMT
I only encountered one socket that was 'damaged' by possibly having a tube inserted with a (slightly) bend pin. It is rather easy to bend the contacts back into shape though and give them their clamping force back by inserting a small jewelers screwdriver and bending the contacts inwards again. Normally this would not be needed the tube sockets are good quality.
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Post by whitenoise on Jul 1, 2014 6:14:26 GMT
Good to know man. Thanks. If I get static again I will just return the thing. Been listening to the amp all night without issue.
I know I can switch the ohm resistance while running the ember. Can the same be done with the gain? While powered up?
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solderdude
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Post by solderdude on Jul 1, 2014 6:43:51 GMT
Gain and output R jumper as well as LED jumper can be operated while playing. The input cap bypass may give a loud 'tick' in the headhone when set while playing. This depends on the used tube though.
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Post by whitenoise on Jul 3, 2014 3:32:29 GMT
Well I received the replacement Novib today and after a few hours of listening I'm not having any of the static noise I was getting on the old Novib and of course I didn't have any issues while not using the original Novib. So it is faulty for sure. This Novib seems to be fine and it does make changing tubes hella easier.
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Post by richard51 on Jul 6, 2014 15:44:31 GMT
Hello to all,
I am curious , i have connected to the Swan M10 speakers the pre/amp function of the Ember... I use it like an amp with my headphones but i have tried to use its pre amp function with the Swans.... My question is : why there is a so great positiive impact on the sound of these speakers? i read that pre amp do not transform the sound normally? I dont intend tu use your time but its so surprizing the impact of the ember pre amp function on the sound of these powered speakers do you have some hints? perhaps this is the result of a particular synergy? i want to understand... a remark: i must put the volume of the ember to the max and control the volume for my earing with the volume pot of the Swan for maximum results... i have the settings on low gain and the output resistance is on medium...
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Rabbit
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Post by Rabbit on Jul 6, 2014 16:16:12 GMT
Since it is a valve amp, the harmonic content is quite different from SS designs. That in itself does change the type of sound that you get. It has lots of headroom and so can provide a very good dynamic range. Therefore, you may also be more aware of impact.
I use my speakers at about 3/4 volume and I use the Ember as a volume control rather than the speakers. Noise isn't an issue used this way with mine and it just means that nothing is running flat out.
As long as the signal isn't to strong for the speakers so you're not introducing distortion on peaks, then everything must be ok. Try listening to the headphone out from the speakers, if there is one and play something that is loud. That way, you'll hear if there is clipping or distortion going on at the speaker end.
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Post by richard51 on Jul 6, 2014 16:26:22 GMT
Since it is a valve amp, the harmonic content is quite different from SS designs. That in itself does change the type of sound that you get. It has lots of headroom and so can provide a very good dynamic range. Therefore, you may also be more aware of impact. I use my speakers at about 3/4 volume and I use the Ember as a volume control rather than the speakers. Noise isn't an issue used this way with mine and it just means that nothing is running flat out. As long as the signal isn't to strong for the speakers so you're not introducing distortion on peaks, then everything must be ok. Try listening to the headphone out from the speakers, if there is one and play something that is loud. That way, you'll hear if there is clipping or distortion going on at the speaker end. thank you for your suggestion... I will try to minimize distortion.... I am very pleased with this Ember.... a question ? if i remove the tube of the ember what will result ? do i use it like a ss amp?
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Post by richard51 on Jul 6, 2014 16:42:17 GMT
i dont have a headphone out on my speakers but the solution i had try after your remarks is good for me.... I ajust about half loud the two volume pot...this cancel too much distortion and permit fine volume control on the two volume pot... the result are without distortion... and better .. thanks for your help
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Rabbit
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Post by Rabbit on Jul 6, 2014 19:16:23 GMT
Great. Glad all is working well with the speakers. You'd soon notice noise or distortion if things weren't quite right. Of course, if the preamp is loud and you turn the speakers down, this would perhaps lower the noise floor but you may need to be careful about peaks. If you don't hear noise, it's most likely working well.
The amp will produce no sound with the valve missing. The valves are in effect the op amps and so without them, nothing will happen.
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Post by richard51 on Jul 6, 2014 19:47:39 GMT
thank for your time ..... and i wish you the best till next time
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Post by manizkrishnan on Jul 19, 2014 21:43:31 GMT
Hello, I am a new owner of Project Ember. I am using Mullard CV4024 / 12AT7 tube so far and It sounds great. Does 6J1P-EV tubes work with Ember?
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solderdude
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Post by solderdude on Jul 20, 2014 7:16:48 GMT
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Post by richard51 on Jul 21, 2014 1:20:26 GMT
Hello to all,
I want to communicate to you some discovery....about the Ember...and perhaps you may explain to me the reason behind my discovery....I use the Ember like a pre-amp with the Swan M10 speakers (by the way very musical active speakers with gain clone amping who are transformed completely by the Ember pre out introduction in my chain ) I have decided today to bypass the input capacitors... what a transparent sounding suddenly manifesting to my astonished ears ! Wow! its like i have changed the dac or the amp or the cable...This little operation makes miracle like a veil is lifted.... Why ?
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solderdude
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Post by solderdude on Jul 21, 2014 7:42:08 GMT
The reason the input bypass caps is present is that for some tubes this brings advantages while for others it may not. This has to do with grid leakage currents and gain of the tube.
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Post by richard51 on Jul 21, 2014 13:05:19 GMT
Thank you very much... I cannot thank enough for the creation of this little marvel and the flexibility of these adjustment.... For a modest price the Ember is incomparable if you have headphone ans some active speakers like me...the sound that comme from the Ember is very clean and i enjoyed my headphone and speakers because of that....if someone bought only one amp there is no competition....unless you pay perhaps thousand....thanks and best regards to you
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