Bad Cat Mini Cat
- modman
- a d m i n
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hey, there is a lot of commotion around this $1500 Japanese (168 000 yen) 5 watter... Do you own one? Would really like to hear some non HC analysis on this one, they are down to outright insults over this one...
Found this 'cutie' - but that's all she is I'm sure
http://www.digimart.net/gk_detail.do?in ... DS00202878
thanks for posting though!
Found this 'cutie' - but that's all she is I'm sure
http://www.digimart.net/gk_detail.do?in ... DS00202878
thanks for posting though!
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- Ronsonic
- Breadboard Brother
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- Posts: 148
- Joined: 07 Feb 2008, 16:56
- Location: Sunny Tampa, Florida
Output tranny is probably a fairly standard 8K-8R. Pretty much anything off a single 6V6 or EL84 or such.
The power tranny depends on what you have and what sort of rectifier you use. Don't see a reason to hunt for something that works for the bridge if you've got something like a 250-0-250 and a tube recto. The Duncan Power Supply Designer is well worth a download and can show you what you can do with what you've got.
Ron
The power tranny depends on what you have and what sort of rectifier you use. Don't see a reason to hunt for something that works for the bridge if you've got something like a 250-0-250 and a tube recto. The Duncan Power Supply Designer is well worth a download and can show you what you can do with what you've got.
Ron
- oscarv77
- Solder Soldier
The reason I asked is because I got a tube turntable amp and adapted it for guitar use (it sits on my bench to test pedals with). I already have the power xformer and the output xformer so I was curious to see if I could adapt/build this amp using that iron.
I'll post pics and xformer numbers tonight.
I'll post pics and xformer numbers tonight.
- Ronsonic
- Breadboard Brother
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- Posts: 148
- Joined: 07 Feb 2008, 16:56
- Location: Sunny Tampa, Florida
Pics and part numbers won't help, but....
If your amp is running a single 6V6, 6AQ5 or EL84 we can presume the OPT is okay for the job and pretty much the same for the power supply. See what B+ voltages you've got and go from there. If you've got anything in the 300-350 VDC range it should be good.
I can't tell you how many projects I built from an old tubed gear that landed in Goodwill.
Ron
If your amp is running a single 6V6, 6AQ5 or EL84 we can presume the OPT is okay for the job and pretty much the same for the power supply. See what B+ voltages you've got and go from there. If you've got anything in the 300-350 VDC range it should be good.
I can't tell you how many projects I built from an old tubed gear that landed in Goodwill.
Ron
- oscarv77
- Solder Soldier
It has 3 tubes (6V6, 6X4, and an unidentified RCA tube). The power xformer has TR-196-606-1-04 and the output xformer: TR-212-606-1-03Ronsonic wrote:Pics and part numbers won't help, but....
If your amp is running a single 6V6, 6AQ5 or EL84 we can presume the OPT is okay for the job and pretty much the same for the power supply. See what B+ voltages you've got and go from there. If you've got anything in the 300-350 VDC range it should be good.
I can't tell you how many projects I built from an old tubed gear that landed in Goodwill.
Ron
I'll power it up and see what kind of voltages I get.
- Ronsonic
- Breadboard Brother
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- Joined: 07 Feb 2008, 16:56
- Location: Sunny Tampa, Florida
It sounds pretty close to perfect for the job. The 6X4 is the rectifier and pretty what you'd expect to see powering an amp like this. 6V6 and EL84 are very similar in their power requirements, check your voltages, but even sight unseen I'd hit it.
I have no idea how good that circuit design is, but there's nothing worrying in it and I've never seen or heard a bad EL84 amp.
I have no idea how good that circuit design is, but there's nothing worrying in it and I've never seen or heard a bad EL84 amp.
- bajaman
- Old Solderhand
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100% in agreement RonI've never seen or heard a bad EL84 amp.
EL84 tubes are THE best sounding tube on the planet
cheers
bajaman
- KHELSTROM
- Solder Soldier
Yes 100R is 100 ohm and 1/2 watt resistors will be fine unless noted otherwise in the schematic. I see that the picture of the schematic I posted is cut off so PM me if you would like me to send you a copy.shicky wrote:This might be a stupid question.
I want to try to build this amp.
is 100R = 100 ohm?
Will 1/2W resistors work fine?
thanks in advance