^that's hilarious! Like the toroid covers!
My latest. 6N2P gain/concertina splitter with unbypassed cathodes, garter bias EL86 output stage, all toroidal transformers, and GNFB.
Mosfet ripple filter for the front end, adjustable mosfet filter (Zener reference/pot) for screen supply, for about 310 volts at output transformers, 195 volts screen, 285 volts for the input stage. AC heaters, and dead silent without signal.
This thing is one of the cleanest sounding builds I've heard, and makes some impressive bass for being all of 25 watts.
My latest. 6N2P gain/concertina splitter with unbypassed cathodes, garter bias EL86 output stage, all toroidal transformers, and GNFB.
Mosfet ripple filter for the front end, adjustable mosfet filter (Zener reference/pot) for screen supply, for about 310 volts at output transformers, 195 volts screen, 285 volts for the input stage. AC heaters, and dead silent without signal.
This thing is one of the cleanest sounding builds I've heard, and makes some impressive bass for being all of 25 watts.
Attachments
(I thought I already posted this thread late last night... but I can't find it now so if this is a duplicate please correct it.)
I read Matt's text and schematic about his Lacewood amp ver-2 and I thought I'd like to build a SE too.
So this is my version of the SE 6V6 Lacewood Amp Ver#2.
I call it "Peter's SE 6V6 amp":
The major differences are:
1. I used a more compact power supply but retained the low (20mv) ripple.
2. I used an LM317 for a 46ma CCS for cathode bias
3. I used a 12SL7 instead of a 6SN7 because I needed more gain since my input source is Mp3.
4. I used a 12uf 400vAC dropper cap for filaments. It supplies 12v@600ma
5. I used 6 tube sockets instead of 3 because I wanted to be able to use other available alternate tubes:
The pre-amp tube is either an octal 12SL7 or a 9-pin 12AX7 ... both are (150ma)
The output tubes are either octal 6V6 or 12V6 - or 7-pin 6AQ5 or 12AQ5
6. I used an A/B switch to arrange the output tube filaments in series (6v@ 450ma) or Parallel (12v@225ma x 2)
Because I designed a more compact power supply and by using a dropper-cap filament supply, I was able to build this beautiful little amp in a nice small wood box (7"x7"x2.5")
I used a 100VA toroid dual wound transformer (not shown but fits the empty space on the lower half of the box) Any other 120vAC- 100VA transformer of your choice will work as well.
So, not only does this stylish little wooden box amplifier look handsome and cute on my stereo shelf in the LR but it also sounds so perfect too. The audio that this wonderful ultra-linear SE amp delivers is incredibly realistic sounding.
The Mp3 input jack is on the left next to the pilot lamp and the two RCA jacks on the right side are the speaker output jacks.
I recommend building this SE 6V6 amp, as it goes together so easily and it looks good and sounds good!
I read Matt's text and schematic about his Lacewood amp ver-2 and I thought I'd like to build a SE too.
So this is my version of the SE 6V6 Lacewood Amp Ver#2.
I call it "Peter's SE 6V6 amp":
The major differences are:
1. I used a more compact power supply but retained the low (20mv) ripple.
2. I used an LM317 for a 46ma CCS for cathode bias
3. I used a 12SL7 instead of a 6SN7 because I needed more gain since my input source is Mp3.
4. I used a 12uf 400vAC dropper cap for filaments. It supplies 12v@600ma
5. I used 6 tube sockets instead of 3 because I wanted to be able to use other available alternate tubes:
The pre-amp tube is either an octal 12SL7 or a 9-pin 12AX7 ... both are (150ma)
The output tubes are either octal 6V6 or 12V6 - or 7-pin 6AQ5 or 12AQ5
6. I used an A/B switch to arrange the output tube filaments in series (6v@ 450ma) or Parallel (12v@225ma x 2)
Because I designed a more compact power supply and by using a dropper-cap filament supply, I was able to build this beautiful little amp in a nice small wood box (7"x7"x2.5")
I used a 100VA toroid dual wound transformer (not shown but fits the empty space on the lower half of the box) Any other 120vAC- 100VA transformer of your choice will work as well.
So, not only does this stylish little wooden box amplifier look handsome and cute on my stereo shelf in the LR but it also sounds so perfect too. The audio that this wonderful ultra-linear SE amp delivers is incredibly realistic sounding.
The Mp3 input jack is on the left next to the pilot lamp and the two RCA jacks on the right side are the speaker output jacks.
I recommend building this SE 6V6 amp, as it goes together so easily and it looks good and sounds good!
Attachments
...
if I may....
last weekend we had a great time - the 9th annual Triode Festival Croatia took place in my home town... I will post a few pics, hope you dont mind... Great time, great ppl, all DIY stuff... here we go
if I may....last weekend we had a great time - the 9th annual Triode Festival Croatia took place in my home town... I will post a few pics, hope you dont mind... Great time, great ppl, all DIY stuff... here we go
Attachments
...
last weekend we had a great time - the 9th annual Triode Festival Croatia took place in my home town...
I will post a few pics, hope you dont mind...
Great time, great ppl, all DIY stuff... here we go
Excellent! Thanks Pamook and DIY Guys from Croatia superb work
thx guys
I dont know, must be a local because all paintings depict parts of my home town Vinkovci... We were given a lunch/conference room for our little endeavour hence the great number of chairs piled on one wall... It was truly a great weekend.... almost everything was DIY - sour cherry baklava, domestic cheese, local special called "kulen" - and even the beer
Attachments
Phono Pre amplifier
Hi All, I have not posted for a long time so thought it would be good if I show you some pics of my latest creation.
It is a Phono pre amp with MC Step-up transformer input as well as a MM stage.
It sounds great with lots of air and detail and very good tight bass. I am happy with the result.
Regards
W
Hi All, I have not posted for a long time so thought it would be good if I show you some pics of my latest creation.
It is a Phono pre amp with MC Step-up transformer input as well as a MM stage.
It sounds great with lots of air and detail and very good tight bass. I am happy with the result.
Regards
W
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I usually get that kind of response on local diy forums when I post bbq or something in chat section....but this time, I appologise - forgot about the time diff LOL so - yes, cruel indeed - those are 4 MoFo monoblocks built by a friend of mine, dont know his nick here, with ECC88 SRPP pre... sounded fantastic with these small AE speakers...