4-4-0 [2 NEW BUILDS WITH PICS; THE 2 WATT WRECK]

[dr. who]

How does this thing sound with a harmonica?

[harryk]

Colossal! Your description of that amp makes me really think that I will build one in near future. I have already built one Express and one Liverpool so I know somehow what to expect. I also made a couple of years ago a Firefly but I sold it away because I did not get right sounds out of it. I really appreciate Cliff`s and other guys work here which keeps us busy with new tube amp projects. Harry

[GainMaster]

Colossal! Your description of that amp makes me really think that I will build one in near future. I have already built one Express and one Liverpool so I know somehow what to expect. I also made a couple of years ago a Firefly but I sold it away because I did not get right sounds out of it. I really appreciate Cliff`s and other guys work here which keeps us busy with new tube amp projects. Harry

Other guy here You won't regret it. The output is such that it makes a great practice amp. You can hear it through a closed door but it is not loud enough to cause people in the other room to turn up the TV.

Brian

[GainMaster]

The final schematic update has been posted along with new soundclips here.

http://www.ax84.com/4-4-0.html

Brian

[jakehop]

Hi guys,

I've been following this thread - I'm very excited about this project.

Just one question - are the Hammond OT's people use good enough to let the total tonal quality shine through? The low power amps that I've tried, have all had a certain "flatness" to them, except for the 5W Laney Lionheart, which sounded huge. It also has a big OT for a 5W amp.

I see on the datasheets, that the Hammonds go down to about 100Hz - theoretically. Is this good enough? Are there other options?

Kind regards, Jake

[JoeyE]

The hammond OT sounds good to me. Beefing the OT may not make a big of a difference like you would normally get with SE. Actually the amp seem to have a huge soundstage quality to it that you get with bigger PA's. I have a low-watt firefly amp and to me the 4-4-0 is in a different league.

[rowla]

Brian, heres my build pictures that i promised.

http://flickr.com/photos/7875278@N08/se ... 7467/show/

Hi Joey, thanks for posting your great photos. What kind of resistors are you using?

[JoeyE]

Thanks. Those are vishay low noise resistors.

[GainMaster]

Hi guys,

I've been following this thread - I'm very excited about this project.

Just one question - are the Hammond OT's people use good enough to let the total tonal quality shine through? The low power amps that I've tried, have all had a certain "flatness" to them, except for the 5W Laney Lionheart, which sounded huge. It also has a big OT for a 5W amp.

I see on the datasheets, that the Hammonds go down to about 100Hz - theoretically. Is this good enough? Are there other options?

Kind regards, Jake

The 125c is fine as the lower e sting only goes down to 80hz or so. Cliff had some special Heyboer OTs made for these amps, that according to Cliff, can rattle the floor with the 6sn7. He might have some more left. www.chappellamps.com

Brian

[jakehop]

Thanks to both Brian and Joey.

I'm gonna try my luck with this little guy. I've built an Express, but my B+ is around 100V too high, so while I am waiting for the right PT, this would be an awesome project!

Kind regards, Jake

[daz]

sounds like a really cool sounding low wattage amp.
Has anyone done a layout?

[sst4270]

Just built one of these... It's very cool!!!
I'm donating to a benefit concert in Timonium, MD tomorrow to be auctioned off.

See pictures here: http://www.flickr.com/photos/32018625@N06/show/

Enjoy the pics.

I'm gona try and records some clips of it tomorrow before it gets put on display for the auction.

This is a really great little amp, and it definitely captures that TW singing quality.
Someone is going to very happy when they win this little amp.

Steve

[GainMaster]

sounds like a really cool sounding low wattage amp.
Has anyone done a layout?

If you search around the thread, one guy did a pdf layout similar to a real wreck. Also, the pics of mine give a good layout of the components and board. Cliff did a layout but it is only included with a purchase of his 4-4-0 kit. It will be released eventually

Brian

[cliffchappell]

sounds like a really cool sounding low wattage amp.
Has anyone done a layout?

If you search around the thread, one guy did a pdf layout similar to a real wreck. Also, the pics of mine give a good layout of the components and board. Cliff did a layout but it is only included with a purchase of his 4-4-0 kit. It will be released eventually

Brian

How about today?

http://www.ax84.com/4-4-0.html

[doctord02]

Cliff thats very cool of you - I know that was no small amount of work...

rock on!