Tube vs. Solid State Preamp
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From: Joerg on 5 Apr 2010 16:30 Fred Abse wrote: > On Mon, 05 Apr 2010 12:50:48 -0700, Joerg wrote: > >> The 2B was one of the best receiver in those days. BAMA is down again so >> I can't post a link to its schematic right now > > The Edebris mirror is up. > > http://bama.edebris.com/manuals/drake/2b/ > Saw that, but I can't read djvu files. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: krw on 5 Apr 2010 17:56 On Mon, 5 Apr 2010 08:20:31 -0700 (PDT), Chris <christopher.maness(a)gmail.com> wrote: >On Apr 5, 7:07�am, Fred Abse <excretatau...(a)invalid.invalid> wrote: >> On Mon, 05 Apr 2010 01:12:52 -0400, Michael A. Terrell wrote: >> >> > Joerg wrote: >> >> >> That is sad amplifier design. I never had that happen with tube stuff, >> >> ever. Back in Europe I once had the antenna on a balcony, blasting close >> >> to 100W FM on 144MHz and the old Sachsenwerk radio was maybe 15ft away >> >> from it in the living room, separated just by the glass of a window. It >> >> didn't even flinch. Same for other tube radios where the record player >> >> inputs are always non-balanced. That's how engineering is supposed to be >> >> done. >> >> > � �Come on, Joerg. �There were amps that sold new for $20 back in the >> > '50s and some small businesses and churches couldn't afford to spend >> > $15,000 on a sound system. �They worked OK in 99% of their >> > installations, but all it took was some 'know it all' to screw around >> > with the wiring, the shielding, or leave off the metal covers and they >> > turned into broadband receivers. �Usually when they couldn't or wouldn't >> > pay for proper service. >> >> Old-time preachers didn't need amplification. You could hear them a mile >> away. What's changed? >> >> -- >> "For a successful technology, reality must take precedence >> over public relations, for nature cannot be fooled." >> � � � � � � � � � � � � � � � � � � � �(Richard Feynman) > >That is funny. I am a sound man for my local Church, and when I have >gotten frustrated, I have politely reminded them that Jesus did not >have a PA. He would row out a little in a boat, and speak to >listeners on the shore using the natural properties of sound traveling >over a smooth surface. I been on a lake and heard this effect >before. It is amazing. I think there is some sound wave ducting due >to a small temperature inversion by the water. So, did they ask your to provide the lake, boat, and temperature inversion for their sermon?
From: Jim Thompson on 5 Apr 2010 20:21 On Mon, 05 Apr 2010 16:53:30 -0700, Joerg <invalid(a)invalid.invalid> wrote: [snip] > >I once repaired a TV set that had motorized tuning. Amazing. > [snip] Not really amazing... I've seen quite a few ;-) What might really amaze you... the 1968 Philco-Ford car radio... the search-tuning version... was all motor-driven inductor slugs... I know, I worked on the design :-) ...Jim Thompson -- | James E.Thompson, CTO | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | The only thing bipartisan in this country is hypocrisy
From: Joerg on 5 Apr 2010 21:14 Jim Thompson wrote: > On Mon, 05 Apr 2010 16:53:30 -0700, Joerg <invalid(a)invalid.invalid> > wrote: > > [snip] >> I once repaired a TV set that had motorized tuning. Amazing. >> > [snip] > > Not really amazing... I've seen quite a few ;-) > > What might really amaze you... the 1968 Philco-Ford car radio... the > search-tuning version... was all motor-driven inductor slugs... I > know, I worked on the design :-) > I once had a car radio with slug-tuning, in my Citroen 2CV. Best one I ever had. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Michael A. Terrell on 5 Apr 2010 21:21
Jim Thompson wrote: > > On Mon, 05 Apr 2010 16:53:30 -0700, Joerg <invalid(a)invalid.invalid> > wrote: > > [snip] > > > >I once repaired a TV set that had motorized tuning. Amazing. > > > [snip] > > Not really amazing... I've seen quite a few ;-) > > What might really amaze you... the 1968 Philco-Ford car radio... the > search-tuning version... was all motor-driven inductor slugs... I > know, I worked on the design :-) Yet the Lincoln used a Delco 'Wobnderbar' radio that year. -- Lead free solder is Belgium's version of 'Hold my beer and watch this!' |