From: gherold@teachspin.com
On Monday, November 5, 2018 at 3:00:12 PM UTC-5, default wrote:
> On Mon, 05 Nov 2018 10:02:04 -0800, etpm@whidbey.com wrote:
>
> >On Mon, 5 Nov 2018 06:56:30 -0800 (PST), George Herold
> > wrote:
> >
> >>On Sunday, November 4, 2018 at 1:44:53 PM UTC-5, et...@whidbey.com wrote:
> >>> On Sat, 3 Nov 2018 18:05:59 -0700 (PDT), George Herold
> >>> wrote:
> >>>
> >>> >On Friday, November 2, 2018 at 2:26:21 PM UTC-4, et...@whidbey.com
wrote:
> >>> >> Since I will be playing a low wattage tube amp through speakers it
> >>> >> seems that high efficiency speakers are in order. How can I tell the
> >>> >> efficiency of a speaker from looking at the specs?
> >>> >> Thanks,
> >>> >> Eric
> >>> >
> >>> >Hey Eric, Can I ask why the tube amp obsession? If you're interested
> >>> >in how they work, then you could fix up some old one or build your own.
> >>> >
> >>> >George H.
> >>> >
> >>> It's not an obsession. It's just that I need a new stereo because the
> >>> old one crapped out. The stereo will be in the area where we entertain
> >>> and so it should look pleasing. To me at least. I have always exposed
> >>> tubes, ever since I was a little kid. We had a big tube radio with a
> >>> mafic eye tuner tube and I loved that. My grandfather was a sound
> >>> engineer who worked for Bell Labs. He had a sound lab in one room of
> >>> the house and when we would visit the grandparents I would always get
> >>> to check out his lab. There were several oscilloscopes as well as
> >>> equipment with exposed, glowing tubes. So that's why I want a tube
> >>> amp. It needs to sound good to me and look good to me. It's gonna be
> >>> connected to am MP3 player so it's not like I abhor silicon. If I had
> >>> the time I would build one. And maybe down the road I will. Tubes are
> >>> way different than solid state stuff.
> >>> Eric
> >>
> >>"Tubes are way different than solid state stuff."
> >>
> >>Hi Eric, well first I know almost nothing about tubes,
> >>and not much more about audio amps driving speakers.
> >>But I've heard that tubes are like Fets. And (being
> >>a class A type of guy.) for Fet's you have the things like
> >>the Zen Amp (Nelson Pass). And I'm thinking you could do
> >>the same thing with a tube... run it class A, and with the right
> >>output transformer ('cause of the higher voltage for tubes)
> >>You are done. (class A is easy to make and understand.. it just
> >>wastes boat loads of power.)
> >>
> >>Comments from audio types welcome.
> >>
> >>George H.
> >I am looking at class A amps. And the amp will help heat the house in
> >the winter. It never gets too hot here on Whidbey Island so the extra
> >heat in the summer won't be a burden.
> >Eric
>
> It is more a matter of what makes you feel good. Tubes are nice with
> their cheerful glow and well-behaved characteristics. I understand
> their esthetic appeal, and having grown up with tubes I do miss
> building tube amps.
>
> But if sound matters, you'd be hard pressed to build a better amp than
> the Nelson Pass Zen amps, particularly some of the iterations that
> have refined the basic Zen.
>
> You will still generate heat... AND if you want, you could use one of
> the designs that uses big 100W incandescent lamps for the positive
> resistance coefficient of tungsten to supply the ballast to the
> current regulator for Class A. Check out some of the Pass designs
> that people have built, some are downright sexy. Building from
> scratch takes longer and is more rewarding... any idiot can slap
> together a kit.
default, so is there some older class A tube amp that Eric could buy
used or something. (This is mostly a selfish question, 'cause I would
find that more interesting than having him buy some ebay thing.)
George H.
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* Origin: you cannot sedate... all the things you hate (1:229/2)
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