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[h00hbt]

Hey Yoss! Nice build. Say, what kind of output transformers are they?

My another project : ED8000 SE

Driver tube : EF86/E80F

Power tube : ED8000

Rectifier tube : Py88

 

[head1962]

My first tube amp. A 6LU8 Spud. The schematics and such are available in this post.

The chassis is made from 18 mm think walnut. It measures 290 x 290 x 95 mm. Top plate is 1.6 mm aluminum. Bottom plate (not shown) is 1.6 mm aluminum perf plate.

~Tom

Nice!
I like single tube amps!
look likes this one make a bit more power than mine

 

[jim]

Hello Yoss,

Very nice builds! What kind of chassis did you use?

 

[chris661]

My first valve amplifier, a pair of 6EM7s used, rectifier is a 5Z4.

Layout's not great, but the sound is pretty good...

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

Bias is from a pair of rechargable batteries, one per side.

An externally hosted image should be here but it was not working when we last tested it.

 

[torrence]

Hey chris661,

Breadboarding at its finest! Be warned, you have just started down a very long slippery slope. There is no turning back now...

 

[tomchr]

That looks a lot more organized that one of my DeathTrap™ designs...

DC coupled, eh. Nice.

~Tom

 

[SGregory]

Here is my deathtrap.

 

[psnw_tom]

One tube single ended from dissimilar triode

............. 13GF7 SE ...........

6X5 as rectifier ..............

6FJ7

 

[psnw_tom]

Other mini-watts SE amp that i did ...............

DHT 71A SE ..........

Ux171A + 7F8 + AZ11 ................

12B4a SE

12B4a + 5670 + 6AX5gt ..........

5AQ5 SE .............

5AQ5 + 6FQ7 + EZ81 ...........

 

[psnw_tom]

Some PSET amps

I choose to parallel some triode tube to get more power ..............

12B4a PSET ........

12B4a + 9002 + 6AX5gtB

6N6p PSET

6N6p + 6J5 + 6Ay3

6RA6 PSET ...........

6RA6 + 6C4 + 6AX5gt

6BX7 PSET .................

 

[ddd]

My new amp

SE 2x4,5W; Russian tubes.

 

[yagoolar]

SE 2x4,5W; Russian tubes.

Let me guess: 6H8/9C + 6C4C?

 

[ddd]

You got it! 6H8C & 6C4C.

 

[Kingrat]

my first tube amp build (mostly) from scratch, its an aikido 6sn7/6h30

it sounds pretty fantastic as is with new production tubes, should i roll some sylvania 6sn7s?

 

[yoss]

Hey Yoss! Nice build. Say, what kind of output transformers are they?

Hi h00hbt,

My OPT is custom made from my friend in Thailand. Primary impedance = 1.5K but I plan to change in to 2.5K soon.

 

[yoss]

Hello Yoss,

Very nice builds! What kind of chassis did you use?

Hi jim,

The chessis made from folded 3mm aluminum sheet and spray by hammered paint.

I also enclosed some photo of my chessis work.

 

[head1962]

I choose to parallel some triode tube to get more power ..............

12B4a PSET ........

12B4a + 9002 + 6AX5gtB



I like your aluminum plate design.
I gave it a try too about a year ago..

 

[Sander'Z]

RIAA preamp.

 

[Reegal]

My last project

My last amplifier,
211 S.E. fixed bias.
12BH7 as driver in cathode follower, second stage 12BH7 cap coupled, input stage 6J5G direct coupled to 12BH7.
Power supply tubes regulated for 12BH7 and 6J5.

 

[robaroni]

Merlyn

Here's my last design. Mono blocs next.
Merlyn will appear in an upcoming issue of Elektor.

Rob