Rabbit
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Post by Rabbit on Nov 13, 2014 19:55:05 GMT
I have both running as well and I really can't choose between them. I agree that the Ember has this punchy, tube sound which is really lovely but my head tells me that the Polaris is maybe a little more 'accurate' with no real tube harmonics going on. It's not as 'colourful' perhaps, but I also like its relative cleanness while indulging myself with the Ember!!
I honestly can't choose one or the other as my preference!!
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Post by richard51 on Nov 21, 2014 14:22:58 GMT
dear Ember afficionados i think that any review of the Ember will not do justice to his flexibility and quality price ratio...... The Ember had no sound of his own like most amp, i think that the Ember adapt himself to the tube and resistance, gain, impedance needed by amplifier and headphones... I used mine with his pre amp function on my speakers with great result.... and with my ortho hifiman the synergy is perfect.... I had made a discovery this week : i used the 12au7 bugle tube and i had used it with a silicone damping ring that cost me 50 cents... Wow the sound was more open and the 3d sound of the bugle boy manifested in my speakers more and in my headphones....I suggest to any of you a try for this tweak at this price.... best regards to all of you and my gratitude to the conceptors of this remarkable Ember....my most precious gear....
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Rabbit
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Post by Rabbit on Nov 21, 2014 14:53:40 GMT
Hi Richard51. My favourite amp. There is nothing that works as well with configuration options like that. I like both the Polaris and Ember a great deal and haven't had a single problem getting the sound to suit me with my vast collection of headphones!!
I am quite interested in the idea of a damper for the tube. The one I am using is quite microphonic (Orange Globe) and I guess holding it down could improve it? I'll have a look around for one.
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h2on0
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Post by h2on0 on Nov 22, 2014 18:45:49 GMT
I recently purchased an Orange Micro Terror guitar amp head and a 8 inch speaker cabinet. I have hooked my Ember up to Micro Terror guitar input input via head phone out on the Ember. Is this a bad idea?
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Post by jhelms on Nov 22, 2014 19:57:59 GMT
Not at all - Rock on!
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h2on0
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Post by h2on0 on Nov 23, 2014 22:15:02 GMT
Cool, thanks for the reply. I had already tried it I just wanted to make sure I wasn't going to destroy my Ember somehow.
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Post by richard51 on Dec 4, 2014 0:58:52 GMT
hello to all ,
I have a question.... I have the Ember and i want to know if it is possible to run it with a battery rechargeable pack? if yes... what are the necessary particular specifications of this battery pack....Also i want to know if there is a solution for removing the electrical noise coming from the wallwart... I have a cheap socket conditioner and i ask myself if there is an ideal solution ... Many people recommended to me some power cord...Perhaps a new power supply is also a good idea.... What is your advice? thanks for your time and Best regards
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solderdude
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Post by solderdude on Dec 4, 2014 6:13:03 GMT
Often the noises from the power supply can be suppressed by using good quality and well screened interlink cables. Sometimes this can happen when a 3 prong plug is used in 2 prong extension cords etc.
try rotating mains plugs (if possible) in the mains sockets by 180 degrees, this sometimes helps.
Sometimes grounding one of the components (to a safety ground, waterpiping or central heating) helps. Especially when touching the screen/ground removes the 'noises'. Sometimes it adds to the problems.
Try setting it up in another room and see if the problem occurs there.
It SHOULD be totally free of noises but sometimes they are hard to get rid off as these noises travel though unexpected paths. Mostly it is caused by 'garbage' generated by different power supplies. Those currents SHOULD be allowed to drain via safety ground OR be low enough not cause audible havoc. Those currents travel through mains -> power supply -> devices -> screening of RCA interlinks. It is the latter that creates the problem... the higher the resistance of the shielding the more audible those currents are.
It could help unplugging everything except the mains cord and figure out when the noise occurs.
Jeremy is STILL working on the linear power supply and has redesigned the PCB so all components fit on the PCB.
Also isolation transformers (with or without mains filtering) could help.
In most cases, however, I have been able to get things to work 'noises free' without any expensive or heroic measures nor needing trafo's.
48V with batteries is not easy to create and can be dangerous when shorted (would need to have fuses in those lines)
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dpump
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Post by dpump on Dec 4, 2014 13:30:42 GMT
About 2 weeks ago Jeremy told me the linear power supply would be ready in January. Don't know the price though.
I purchased a 12AU7 to 6SN7 adapter on eBay. Jeremy told me and has posted before that this will not work on the Ember. He says the auto voltage detect won't work. Is there a way to wire this adapter so that it will work on the Ember so I can try a 6SN7 or 12SN7? Jeremy said this adapter will work on the other tube amps that have a voltage select switch and that he could make an adapter to work on the Ember. If possible, I would like to rewire my adapter to work on the Ember.
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solderdude
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Post by solderdude on Dec 4, 2014 14:15:03 GMT
This adapter was discussed here: diyah.boards.net/thread/700/project-sunrise-horizon-starlight-6sn7pin 7(or 8) of 6SN7 to pin 4 of amp pin 8(or 7) of 6SN7 to pin 9 of amp (instead of pin 5 of amp) The (non Ember) amps should still be set to 12V but it should now work on Ember as well. What I understood from Jeremy is that these things are potted and cannot be opened though. In case you can open yours re-arrange the pins as mentioned above and it should work on Ember as well. Jeremy was thinking of making an adapter himself if he could find the proper sockets and a way to make them. Jeremy has the enclosure for the linear and a few weeks ago talked about the new PCB and filtering on it. No news since then but perhaps in the X'mas period he has some time to finally make them. They will be expensive when they need to be shipped outside the US and there was some talk about Javier possibly making those but haven't heard if this has taken any form or shape yet.
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Post by richard51 on Dec 5, 2014 0:35:39 GMT
thank you very much solderdude for your kind reply.... I will wait for the linear supply for sure and inspect everything in the chain....
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oldson
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Post by oldson on Dec 5, 2014 18:11:52 GMT
They will be expensive when they need to be shipped outside the US and there was some talk about Javier possibly making those but haven't heard if this has taken any form or shape yet. Frans are they likely to cost more than the Ember itself, or in the same ball park?
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solderdude
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Post by solderdude on Dec 5, 2014 22:37:08 GMT
I honestly have no idea.
They will be available in very limited numbers so the PCB's (knowing the quality Jeremy likes) and the nice metal enclosure that won't be 'e-bay cheap' in any case. The transformer is the other expensive part. The rest of the components is peanuts.
For the European market there will be no import duties and shipping will be cheaper when you have them assembled by Javier. That might save a lot of money.
A decent regulated 24V/48V power supply that can provide enough current simply can't be made cheaply.
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oldson
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Post by oldson on Dec 6, 2014 18:41:25 GMT
maybe he should market it as "reassuringly expensive"? :-)
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Post by deireleire on Dec 9, 2014 12:04:27 GMT
Is there going to be a power-feed for the new 'active filter box' on it?
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