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In Reply to: RE: Tu-8300 up and running......review posted by marc0209 on January 06, 2010 at 08:11:22
Hi Marc and others!
Well I also finished my TU-8300!
Awesome kit! As others already said: "Well thought and absolutely something for beginners"
I never did soldering before, and it just took my to long evenings (8-10 hours) to complete it.
I was very scary while turning it on for the very first time. All those "Caution topics" in the testing routines list. But everything worked fine and I just had one problem. I didn't have any speakers. I threw my old "student diy made" ones away and didn't have the time yet to build new ones. I already have my new drivers and just plugged those in.
No bass, due to the missing cabin, but a very warm and clear mid's and hights. I'm looking very forward to start building my cornu spiral self made copies next days.
Marc, you mentiond aa "vcap mod" what is it andwhere can I find more information on that? Are there any other tweak you might recommend?
Once I'll have my final system I would like to add a thin wooden finish on top of the TU-8300 just to make it more "wife friendly" ;-)
Until then I'll be able to optimize some small things beforeplaying my whole music collection up and down...
vkung, thannk for giving people like me the change to get a tube amp and to become 20-25 at least for a few hours again ;-)
Sebastian
Follow Ups:
You should consider a pair of Telefunken 12AT7
Hi Viktor!
Well, I assume I just have to replace them?
Does V-Cap make no sense? I wasn't able to find any concrete Information on these in combination with the TU-8300.
By the way. Adding a headphone output to TU-8300, will this be a big task?
I just started building my new cornu spiral speakers and hopefully I'll be able to test the system next week....
Have a nice weekend!
Sebastian
There are 6 X 0.047 mfd caps. I prefer vcap than other caps.
If you add a headphone jack, the output is too high. It is very easy to burn your headphone.
Please look at this thread from Woo
http://www.head-fi.org/forum/thread/504471/wee-new-product-from-woo-audio
Thanks
Victor
Well, greetings from Nanaimo to Vancouver ;-)
Thank ou for the fast reply.
Okay, I did some websearch.
Is there a differnce in sound regarding vcaps TFTF Series or CUTF Series?
Looking for Telefunken tubes I found some discussion on the web that their 12AT7 are not really that good as some others... If I might still try to get some,... which production decade should I choose?
Headphone, sure it would burn,...I'll have alook at the link you provided. Tahnks!
I guess I give my wife an additional amp ;-)
Thanks again!
Sebastian
CUTF is too expensive.. I think TFTF is the best fit.
For Telefunken 12AT7 $25.00 each, It is not bad at all
Hi Viktor,
well I did a mistake. I just immigrated to Canada and I needed a new audio system (Europe 230V - Canada 110V).
So I searched for a tubeamp and stumbled over TU-8300.
Your website didn't work properly those days on my ie8 and therefore I bought it at tubedepot.com in USA.
Just 2 days after I realized that you live in Vancouver :-(
Well, it doesn't matter. I finish the amp and it was really fun!
I know my self and if I don't spend a few more hours in improving the amp right now, I will never do it.
Which V-Caps do you have?
I just found a good offer here: http://www.partsconnexion.com/capacitor_film_vcap_cutf.html
The ProAc look very nice!
I just decided to give that strange design of those spiral speakers a try. but I will use a TangBand instead of a Fostex driver.
Back to Telefunken. Do you know a resource in Canada?
Cheers!
Sebastian
But it seems like the prices in the basket are even lower at http://www.partsconnexion.com/capacitor_film_vcap_cutf.html
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