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Little Dot MK VI / Little Dot MK VIII SE Owners Unite - Page 35

post #511 of 1380

Yes the 7F7 with the round plates are the ones that I am using and with heavy gettering down on most of the glass. The ones I have are labeled Philco(Sylvania?) make. I also have a full box of 7N7 NOS tubes previously that I was able to acquire at a cheap price that I have not tried all of them yet. Maybe late next year. I just enjoy the MA and AIX recordings. The Aix records are very unique in sound and options on Blu-Ray. The Aix 3D video recordings are some of the best examples of natural 3D presentations I ever seen, far better that the Sony 3D recording of Lang Lang as an example. Good natural 3D video recordings require different methods from 2D video and you do not want to over blow the effect.


Edited by john57 - 12/10/12 at 7:30pm
post #512 of 1380

What the difference between 7N7 and 7F7? Are those worth it if you already own  6SU7GTY?

I can also confirm the T1 sounded superb with the MK6+


Edited by zenpunk - 12/10/12 at 11:57pm
post #513 of 1380

7N7 is the loctal version of 6SN7

7F7 is the loctal version of 6SL7

Much cheaper than the TS round plates if you can find them in the round plate version.

post #514 of 1380

John your breaking my expenditure limits with all these new tubes your trying. mad.gif

post #515 of 1380

Well, I believe that I have a good eye for bargains and “bang for the buck.” Tube prices are going at least 40% higher each year. I view my LD Mk6 as a long term investment, getting all the tubes for the future makes perfect sense to me.  I have a few rare tubes like the NOS GE 6AS7 with the shiny copper bottom radiators, very beautiful. I also have the older NOS  Heintz & Kaufman Gammatron tubes with perfect mint color printing on the tubes, harder to find them in the 6080 version these days.

My LD Mk6 is being used every day for many things. My DAC has five active inputs all going to my LD Mk6 for movies, TV shows on internet, 3D music videos, DVD's and CD' except for my surround sound system.  I am hardly using my 43" TV since I can not afford satellite TV any more.

post #516 of 1380
Quote:
Originally Posted by john57 View Post

Well, I believe that I have a good eye for bargains and “bang for the buck.” Tube prices are going at least 40% higher each year. I view my LD Mk6 as a long term investment, getting all the tubes for the future makes perfect sense to me.  I have a few rare tubes like the NOS GE 6AS7 with the shiny copper bottom radiators, very beautiful. I also have the older NOS  Heintz & Kaufman Gammatron tubes with perfect mint color printing on the tubes, harder to find them in the 6080 version these days.

My LD Mk6 is being used every day for many things. My DAC has five active inputs all going to my LD Mk6 for movies, TV shows on internet, 3D music videos, DVD's and CD' except for my surround sound system.  I am hardly using my 43" TV since I can not afford satellite TV any more.

What are your impressions of the difference between the TS12SN7 oval plates and the 7F7's? I've got a pair of ratheon 7F7's which I haven't even tried as I thought they wouldn't come up to the Tungsols's but as I couldn't sell them I will probably keep them for curiousity now. My very initial impressions of the 12sn7's together with the adapters from Glenn is very favourable as you have said previously, and I'm not really inclined to look further as these hit all the buttons for me.

post #517 of 1380

The difference between the TS12SN7 and the 7F7 is that the 7F7 is a bit brighter, a bit less noisy and a bit more impact. Nothing is wrong with the TS12SN7 but I only have one pair of the TS12SN7 and the 7F7 is the next best thing.  I was able to acquire a few 7F7 pairs.  Make no mistake I am perfectly content with the SQ of my LD Mk6 and you said that you are content with yours also. I got all the tubes I needed for the long term.  I made some improvements on the power supply for my USB reclocker and using a different USB port is also helping with the sound quality.


Edited by john57 - 12/30/12 at 7:54am
post #518 of 1380

Hiya..sorry to go off topic. Need some help. I'll like to purchase a LD MK8 SE. How do you go about doing it ? I've emailed the stated address on their forum,  little.tube@gmail.com asking for a price quote but am not getting a response. Am going about it the right way ? Hows the after sales support of their product ?

post #519 of 1380
Quote:
Originally Posted by binot View Post

Hiya..sorry to go off topic. Need some help. I'll like to purchase a LD MK8 SE. How do you go about doing it ? I've emailed the stated address on their forum,  little.tube@gmail.com asking for a price quote but am not getting a response. Am going about it the right way ? Hows the after sales support of their product ?

You can email or pm directly on the Little Dot forums. Faster response. I purchased my unit off ebay fyi.

post #520 of 1380
Quote:
Originally Posted by binot View Post

Hiya..sorry to go off topic. Need some help. I'll like to purchase a LD MK8 SE. How do you go about doing it ? I've emailed the stated address on their forum,  little.tube@gmail.com asking for a price quote but am not getting a response. Am going about it the right way ? Hows the after sales support of their product ?


Be pacient, i dont like wait neither that answer me my mails, i guaranteee that david always will answer your mails. Just be pacient.

post #521 of 1380

Can the OPA445AP in VI changed to Audio GD Sun???

post #522 of 1380
Quote:
Originally Posted by fmlfml View Post

Can the OPA445AP in VI changed to Audio GD Sun???

 No, you can not change the OPA445AP to  Audio GD Sun in the LDVI because it is serving a different purpose of DC offset servo control for the power tubes. Since there is no output DC caps being used in the LDVI the OPA445AP duty is to maintain zero DC output from the power tubes by sending a controlling signal back to the input of the tubes like kind of a feedback loop. The OPA445AP is not in the audio source path. Every time you change the  high voltage OPA445AP you fine tune the DC offset as close to zero using the trim pots for each chip.


Edited by john57 - 1/12/13 at 1:47am
post #523 of 1380
Quote:
Originally Posted by john57 View Post

 No, you can not change the OPA445AP to  Audio GD Sun in the LDVI because it is serving a different purpose of DC offset servo control for the power tubes. Since there is no output DC caps being used in the LDVI the OPA445AP duty is to maintain zero DC output from the power tubes by sending a controlling signal back to the input of the tubes like kind of a feedback loop. The OPA445AP is not in the audio source path. Every time you change the  high voltage OPA445AP you fine tune the DC offset as close to zero using the trim pots for each chip.

perfect explanation!!!beerchug.gif

post #524 of 1380

john did you prove shuguang Cv181 treasure?

post #525 of 1380
Thread Starter 

Did LD ever change the annoying buzzing or fragile power button some of the models (including mine) had?

 

Quote:
Originally Posted by atistatic View Post

john did you prove shuguang Cv181 treasure?

These didn't work in my unit as far as memories go.


Edited by reiserFS - 1/23/13 at 9:29am
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