solderdude
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measureutternutter
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Post by solderdude on Aug 1, 2015 20:02:36 GMT
I've noticed that the background on this amp is not "completely" black. There is a soft "shhhh." Very slight but there nonetheless. Just curious if this is inherent to the design. It is tube dependent. |
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Post by richard51 on Aug 2, 2015 14:42:17 GMT
i had try many tubes and i had noise and microphonics with only one , perhaps 2 tubes , the Ember is the flagship, and with the right tube very good....Perhaps i had noise and i notice nothing, i use the Ember always around 12h45m (or 9 o'clock) on the headphone with the he 400 ... by the way salutations to you Matttcg
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Deleted
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Post by Deleted on Aug 2, 2015 16:43:51 GMT
I've not heard noise from any of the valves I've used thus far.
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Post by thunderhead on Aug 4, 2015 23:12:57 GMT
This has probably been beaten to death but I have searched the thread for a good source to buy the 7193 adaptor...
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Post by musicman on Aug 4, 2015 23:37:54 GMT
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oldson
extremely active
Posts: 1,678
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Post by oldson on Aug 7, 2015 17:51:45 GMT
guys
has the upgraded psu for Ember been shelved?
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solderdude
Administrator
measureutternutter
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Post by solderdude on Aug 7, 2015 21:05:50 GMT
Nope, in fact Jeremy is working on the proto this week but found a snag that needs to be resolved.
The snag is the inrush current of some tubes which is on the high side.
Jeremy is working on some possible solutions.
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Post by thunderhead on Aug 8, 2015 14:54:59 GMT
Copy that. Yes, I do have the 6SN7 adapter.
Next question: Recommendations for the tube as in where (like Ebay best seller) to buy them?
Many thanks!
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Post by musicman on Aug 9, 2015 1:27:33 GMT
What country are you in? Alot depends on where you are as far as shipping and possible duties to be paid. I live in US and purchased twice for the 7193 tubes from this seller...http://www.ebay.com/itm/371329485983?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT and he is very reliable. He only had two KenRad 7193 I bought them and contacted him and asked if he was going to get anymore, and he replied a day later that he could and did, I bought those two also. Ask the dealers, look at their ratings, and don't be afraid to ask them questions.
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Post by thunderhead on Aug 11, 2015 0:59:54 GMT
I'm in USA. The adapter has shipped from the guy you suggested. I ordered the one for 12AU7 tubes instead. If it is not tall enough, I have a pin saver adapter. If it is, that will save one adapter. I will let you know.
Found a good deal (I think) for a pair of tubes also shipped
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olindh
valued member
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Post by olindh on Aug 11, 2015 15:42:37 GMT
I'm in USA. The adapter has shipped from the guy you suggested. I ordered the one for 12AU7 tubes instead. If it is not tall enough, I have a pin saver adapter. If it is, that will save one adapter. I will let you know. Found a good deal (I think) for a pair of tubes also shipped Im interested to know if it is tall enough. Be aware that you might have to do some modifications to it in order for it to work with the auto-biasing of the Ember. |
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Deleted
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Post by Deleted on Aug 11, 2015 20:39:54 GMT
Here's a question that's only come to me because I've been experimenting with my output resistance. What's the output resistance when the jumpers aren't in place at all? Is it 0 Ohms?
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solderdude
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measureutternutter
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Post by solderdude on Aug 11, 2015 20:48:35 GMT
No jumpers = 'High' setting = 120 Ohm.
The 'high' setting is thus basically only a 'storage room' for the jumper.
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Deleted
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Post by Deleted on Aug 11, 2015 21:30:23 GMT
Ah, OK. Yes, I hear it that way too. I assumed 0 Ohms but my ears were telling me something different, lol.
Thanks Frans.
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Post by thunderhead on Aug 11, 2015 23:36:49 GMT
I'm in USA. The adapter has shipped from the guy you suggested. I ordered the one for 12AU7 tubes instead. If it is not tall enough, I have a pin saver adapter. If it is, that will save one adapter. I will let you know. Found a good deal (I think) for a pair of tubes also shipped Im interested to know if it is tall enough. Be aware that you might have to do some modifications to it in order for it to work with the auto-biasing of the Ember. Copy that. I have a Sunrise 2 to play with also |
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