Hi!

To cut down on spam, we tend to remove users that haven't posted anything after a day or so, so this is the place to say hi for the first time.
neskor
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Hi!

Post by neskor » Mon Apr 30, 2018 3:41 pm

Hi from Belgrade Serbia :bigsmurf:
Mainly interested in building tube amps.

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IslandPink
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Re: Hi!

Post by IslandPink » Thu May 03, 2018 9:46 pm

Welcome !
Tell us something about your amps & interests if you get time.
White flags of winter chimneys waving truce against the moon ( Mitchell )

neskor
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Re: Hi!

Post by neskor » Fri May 04, 2018 11:06 am

Hi.
My A system:
Speakers: Tannoy Monitor Gold 15"
Amplifier: NAT SE1 with 211 and DIY SET 4P1L in pentode mode with 300B
Preamp: Intact Audio TVC and Bartola 4P1L in triode mode
Phono: Shishido LCR Phono
DAC: Lampizator Amber
Turntable: EMT 930st with 12" Schick tonearm and SPU Gold
R2R: Studer A810 and Studer A807

My B system:
Speakers: JBL L112
Amplifier: Sony VFET TA-7FB
Digital: Squeezebox Touch
Turntable: Technics 1210 MKII with Denon DL109
Cassette Deck: Nakamichi 680ZX

simon
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Re: Hi!

Post by simon » Fri May 04, 2018 11:45 am

Some very nice stuff there

Michael L
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Re: Hi!

Post by Michael L » Fri May 04, 2018 1:36 pm

Neskor,
Yes, a very nice collection of equipment.
How is your Bartola 4P1L preamplifier. I have read a lot of good things about these. Do you have any problems with it being microphonic?

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andrew Ivimey
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Re: Hi!

Post by andrew Ivimey » Fri May 04, 2018 4:17 pm

Welcome! My 4p1ls are still in their wrappers.
Philosophers have only interpreted the world - the point, however, is to change it. No it isn't ... maybe we should leave it alone for a while.

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pre65
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Re: Hi!

Post by pre65 » Fri May 04, 2018 4:27 pm

andrew Ivimey wrote:
Fri May 04, 2018 4:17 pm
Welcome! My 4p1ls are still in their wrappers.
Welcome, I sold on my 4p1l some time ago. :)
Life is what happens to you while you're busy making other plans. John Lennon

G-Popz THE easy listening connoisseur. (Philip)

neskor
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Re: Hi!

Post by neskor » Fri May 04, 2018 5:05 pm

Michael L wrote:
Fri May 04, 2018 1:36 pm
Neskor,
Yes, a very nice collection of equipment.
How is your Bartola 4P1L preamplifier. I have read a lot of good things about these. Do you have any problems with it being microphonic?
Yes, and that is a main problem when dealing with small signals.
It will sing ziiiing if your amplifier is with 1V input sensitivity otherwise it will be OK.
I'm using that preamp right now as my headphone amp with my HD600 without any problem.

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IslandPink
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Re: Hi!

Post by IslandPink » Fri May 04, 2018 5:30 pm

Some great equipment there. Are you driving the 300B with 4P1L in pentode mode ? If so , we should form a special club ( of 2) unless you know anyone else. It's the best combination I've tried, after more than 15 years of building SE amps.
White flags of winter chimneys waving truce against the moon ( Mitchell )

neskor
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Re: Hi!

Post by neskor » Fri May 04, 2018 6:24 pm

IslandPink wrote:
Fri May 04, 2018 5:30 pm
Some great equipment there. Are you driving the 300B with 4P1L in pentode mode ? If so , we should form a special club ( of 2) unless you know anyone else. It's the best combination I've tried, after more than 15 years of building SE amps.
Yes, in pentode mode.
Great transparency and 3D sound, only drawback is missing mid bass.
I would also try 10Y IT 300B with LL7903 as input transformer. That should be a killer ;)

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IslandPink
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Re: Hi!

Post by IslandPink » Fri May 04, 2018 11:20 pm

Maybe, but what about the inductance of the IT , won't that potentially leave the low bass a bit lacking ?
I had a 3-stage Ecc40 > d.c. into > 45 ( choke-loaded ) into 300B and I didn't like it quite as much as the current amp.
What frequencies are your 'mid bass', people have different definitions ?
Interesting to talk...
What cabs for the Tannoys ?
White flags of winter chimneys waving truce against the moon ( Mitchell )

neskor
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Re: Hi!

Post by neskor » Sat May 05, 2018 6:12 am

Cabs are custom made, around 150L, bass reflex.
Before this I had a D3 in triode mode IT to 300B, but this configuration with 4P1L sounds much better.
I need to try that 10Y IT 300B and after I will decide which configuration I will keep.
Mid bass for me is probably around 100 - 300 Hz. Piano on some notes sounds thin, no full bodied.

simon
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Re: Hi!

Post by simon » Sat May 05, 2018 9:44 am

I've had a breadboard on the go for nearly 12 years now which ended up as 26 RC 10Y IT 300BXLS. There's a thread here somewhere. Very nice. I struggled to get the IT quiet unless the PS was remote though.

But one of the 300Bs had an accident at Christmas :-(. And I much prefer GM70s anyway so not sure if I'll get back to 10Y IT 300B.

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ed
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Re: Hi!

Post by ed » Sat May 05, 2018 10:49 am

Hi Neskor, welcome

I see you have a legendary TA-F7B...consider me envious. From all reports of the SITs in general it's top of my list of 'want to have a listen'. Unfortunately they're so thin on the ground it's unlikely ever to happen. I have 1 pair of the 2sk/2sj in the bit box somewhere but never got round to using them as there didn't seem any point making 1 channel.
There's nowhere you can be that isn't where you're meant to be

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IslandPink
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Re: Hi!

Post by IslandPink » Sun May 06, 2018 8:32 pm

neskor wrote:
Sat May 05, 2018 6:12 am
I need to try that 10Y IT 300B and after I will decide which configuration I will keep.
Mid bass for me is probably around 100 - 300 Hz. Piano on some notes sounds thin, no full bodied.
Thanks - interesting. That's a tricky area - certainly for most speakers.
I don't feel I have a problem there with my amp, but I'm always open to advice.
What are you using for the DHT/DHP filament supplies ?
We did a fairly long development on current-sourced filament supplies, and found you could lose tone & body in almost any part of the frequency spectrum if you didn't get the circuit or the component choice correct. You might want to read a few pages of this -
viewtopic.php?f=11&t=4729
...but I wouldn't stop anyone building 10Y>IT>300B, that sounds nice.
White flags of winter chimneys waving truce against the moon ( Mitchell )

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