Building a HiFi amp
Moderators: pompeiisneaks, Colossal
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Leo_Gnardo
- Posts: 2585
- Joined: Thu Sep 27, 2012 1:33 pm
- Location: Dogpatch-on-Hudson
Re: Building a HiFi amp
Tube stereo: try to just keep it a hobby and not let it run away with your life. Like Mr. Ikeda here:
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down technical blind alleys . . .
Re: Building a HiFi amp
The empty chair is probably where Mrs. Ikeda used to sit, but Mr. Ikeda looks pretty happy nonetheless 
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skyboltone
- Posts: 2287
- Joined: Wed May 10, 2006 7:02 pm
- Location: Sparks, NV, where nowhere looks like home.
Re: Building a HiFi amp
Yeah it's really a pretty complex scheme compared to what we do here. The led bias business and all the interstage feedback loops make things kinda out of my understanding. Still, I hope to put one together one day. Apparently he likes the 6V6 version the best without some of the feedback loops. We'll see.John_P_WI wrote:Dan,
Thanks for mentioning Baby Huey. A little digging and found out that is Ian's "Gingertube" design - Ian frequently stops by TAG. I have not built it, but being Ian's design I am sure it is very good. May have to contemplate this for the future. Thanks!
The Last of the World's Great Human Beings
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Dynakit
This would be fun
http://www.ebay.com/itm/DIYTube-Dynaco- ... 2ecb7b6ed0
http://www.ebay.com/itm/DIYTube-Dynaco- ... 2ecb7b6ed0
I've got blisters on my fingers!
Re: Building a HiFi amp
When I have visited the Hi Fi forums those Foster full range speakers get a lot of attention.
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Tom
Don't let that smoke out!
Don't let that smoke out!
Re: Building a HiFi amp
I like that mission dresser a lot did you build that?
Re: Building a HiFi amp
No sir, its Stickley.
John
John
Do not limit yourself to what others think is reasonable or possible.
www.johnchristou.com
www.johnchristou.com
Re: Building a HiFi amp
Its beautiful I love the clean lines .
I just built some mission style cherry cabinets.
I'm plan ng on building a bunch of mission furniture for our new house. Probably won't ever happen.
I just built some mission style cherry cabinets.
I'm plan ng on building a bunch of mission furniture for our new house. Probably won't ever happen.
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skyboltone
- Posts: 2287
- Joined: Wed May 10, 2006 7:02 pm
- Location: Sparks, NV, where nowhere looks like home.
Re: Building a HiFi amp
Wow. That's worth as much as a '57 Strat!Cantplay wrote:No sir, its Stickley.
John
The Last of the World's Great Human Beings
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Seek immediate medical attention if you suddenly go either deaf or blind.
If you put the Federal Government in charge of the Sahara Desert, in five years time there would be a shortage of sand.
Re: Building a HiFi amp
Build speakers first. My speakers right now are a "compromise", 2 way with 15" woofer, QSC 152 waveguide with RCF ND1411-m 1" driver with constant directivity "econowave" crossover, all in a Jensen ultraflex cabinet. Around 97 dB per watt.
This is downsized from a full horn system that was 104 dB per watt. The more I went down the hi-fi rabbit hole the more I came to the conclusion that impedance matching was everything, and that the least efficient point of transfer was the driver to the air in the room to your ear. A horn works to make a better impedance match to the air in the room giving the sound more body and improved efficiency. Not only that but you have the added benefit of controlling directivity and room reflections, improving imaging and with constant directivity taken into consider ration you no longer have to keep your head in a vice to be in the "sweet spot". Plus it rocks has greater headroom, lower distortion and sounds like real music and that's the whole point anyways.
Once you have speakers that will let you see the difference of your gear upstream and the added efficiency will let you play with low wattage single ended stuff if you want. I've had all kinds of tube amps- built and tried many things, they come and go but I have a carver solid state receiver that I've had for the last 30 years that always ends up back in the system and the other stuff goes away. A good small size compromise is single drivers with a class D amp, or a nice set of headphones.
A fun tube amp project is a single ended amp using 6EM7's I really think something simple like that is hard to beat if you have speakers that can rock with a couple watts.
I think that's why so many guys spend big bucks on cables and high power and other nonsense, because there speakers are only letting them hear 2% of what's happening.
This is downsized from a full horn system that was 104 dB per watt. The more I went down the hi-fi rabbit hole the more I came to the conclusion that impedance matching was everything, and that the least efficient point of transfer was the driver to the air in the room to your ear. A horn works to make a better impedance match to the air in the room giving the sound more body and improved efficiency. Not only that but you have the added benefit of controlling directivity and room reflections, improving imaging and with constant directivity taken into consider ration you no longer have to keep your head in a vice to be in the "sweet spot". Plus it rocks has greater headroom, lower distortion and sounds like real music and that's the whole point anyways.
Once you have speakers that will let you see the difference of your gear upstream and the added efficiency will let you play with low wattage single ended stuff if you want. I've had all kinds of tube amps- built and tried many things, they come and go but I have a carver solid state receiver that I've had for the last 30 years that always ends up back in the system and the other stuff goes away. A good small size compromise is single drivers with a class D amp, or a nice set of headphones.
A fun tube amp project is a single ended amp using 6EM7's I really think something simple like that is hard to beat if you have speakers that can rock with a couple watts.
I think that's why so many guys spend big bucks on cables and high power and other nonsense, because there speakers are only letting them hear 2% of what's happening.