Tube vs. Solid State Preamp
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From: Jim Thompson on 31 Mar 2010 17:16 On Wed, 31 Mar 2010 22:11:17 +0100, adrian(a)poppyrecords.invalid.invalid (Adrian Tuddenham) wrote: >�Leo� <leo2100(a)gmail.com> wrote: > >[...] >> This happens so because the transistors are more ideal amplifying >> devices than tubes are...so the signal that comes in is the one that >> comes out, with as little distortion as possible. Since the tubes are >> less ideal, they add different components to the original signal... >> this have turned out to be more pleasant to the human ear. > >I would disagree with this statement. The curvature of the transistor >characteristic is much sharper than many valves and the harmonics >generated are much nastier-sounding. Valve stages with no feedback are >quite common and the distortion they generate with moderate signal >voltages is quite tolerable, but transistor stages with no feedback are >virtually unusable for audio. > >Transistor amplifiers can contain more devices in less space for the >same price and that allows them to employ much more feedback than valve >ones, not just overall but within individual stages; this is what gives >the improvement in overall linearity which you have erroneously >attributed to the devices themselves. The down side is that when they >eventually overload, they do so much more sharply and generate higher >harmonics, which sound vile. Unless you build in "soft" limiting and make 'em sound toob-like :-) ...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: Michael A. Terrell on 31 Mar 2010 18:54 Joerg wrote: > > Michael A. Terrell wrote: > > Joerg wrote: > >> The German text in there is rather funny. For "low noise" they use the > >> expression "niedriges Geraeusch". That words normally describes a noise > >> such as the squeal of a bearing that's about to go bad. > > > > > > Or heavy metal. ;-) > > > > If you listen to music from the Scorpions the noise figure does not make > one iota of difference :-) I listen to traditional Country music, Bluegrass & Southern Gospel. -- Lead free solder is Belgium's version of 'Hold my beer and watch this!'
From: Joerg on 31 Mar 2010 19:27 Michael A. Terrell wrote: > Joerg wrote: >> Michael A. Terrell wrote: >>> Joerg wrote: >>>> The German text in there is rather funny. For "low noise" they use the >>>> expression "niedriges Geraeusch". That words normally describes a noise >>>> such as the squeal of a bearing that's about to go bad. >>> >>> Or heavy metal. ;-) >>> >> If you listen to music from the Scorpions the noise figure does not make >> one iota of difference :-) > > > I listen to traditional Country music, Bluegrass & Southern Gospel. > Same here. When doing layout checks I listen to these: http://www.bluegrass.com/radio/ http://www.radioparadise.com/content.php?name=Listen http://bluegrasscountry.org/ But when I was young and wild, different story :-) -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Jim Thompson on 31 Mar 2010 19:51 On Wed, 31 Mar 2010 16:27:22 -0700, Joerg <invalid(a)invalid.invalid> wrote: >Michael A. Terrell wrote: >> Joerg wrote: >>> Michael A. Terrell wrote: >>>> Joerg wrote: >>>>> The German text in there is rather funny. For "low noise" they use the >>>>> expression "niedriges Geraeusch". That words normally describes a noise >>>>> such as the squeal of a bearing that's about to go bad. >>>> >>>> Or heavy metal. ;-) >>>> >>> If you listen to music from the Scorpions the noise figure does not make >>> one iota of difference :-) >> >> >> I listen to traditional Country music, Bluegrass & Southern Gospel. >> > >Same here. When doing layout checks I listen to these: > >http://www.bluegrass.com/radio/ >http://www.radioparadise.com/content.php?name=Listen >http://bluegrasscountry.org/ > >But when I was young and wild, different story :-) On my Roku line-up, talk radio, plus old time rock 'n' roll, some jazz, and some classical... Fox News Talk KFYI 550 AM Phoenix, AZ BBC World Service News KOOL 94.5 FM Phoenix, AZ WTIC 96.5 FM Hartford, CT WOGL 98.1 FM Philadelphia, PA WNEW 102.7 FM New York, NY WOMC 104.3 FM Detroit, MI Melbourne (Oz) Rock 'n' Roll Classic Gold Rock 'n' Roll (NL) WKSU 3 89.7 FM Kent, OH (Classical) HPR1: The Classic Country Channel Radio Paradise (AAC+ 64k) KFOG 104.5 FM San Francisco, CA KPCC 89.3 FM Pasadena, CA Absolute Radio (MP3 128k) Smoothjazz.com (MP3 128k) SmoothLounge.com (MP3 128k) ...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: Don Lancaster on 31 Mar 2010 20:01
Michael A. Terrell wrote: > > > I listen to traditional Country music, Bluegrass & Southern Gospel. > > I think I found your problem. -- Many thanks, Don Lancaster voice phone: (928)428-4073 Synergetics 3860 West First Street Box 809 Thatcher, AZ 85552 rss: http://www.tinaja.com/whtnu.xml email: don(a)tinaja.com Please visit my GURU's LAIR web site at http://www.tinaja.com |