Heres some enlightment: http://groups.google.com/groups?q=Earth+Sound+Research&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=3A9189A3.7BC4C238%40stargen.com&rnum=3 Steve Hearns Technotronic Dimensions, NY (USA) 1-877-817-9885 (Voice / Fax US Only) WWW.TECHNOTRONIC-DIMENSIONS.COM ----- Original Message ----- From: <Svatek227@xxxxxxx> To: <techassist@xxxxxxxxxxxxx> Sent: Friday, July 25, 2003 11:54 AM Subject: [TechAssist] Re: EARTH Sound Research Mixer Amp > I just emailed Farmingdale's Chamber of Commerce they may be able to shed > light on this by giving me history on the company where it went, who bought it > etc. will keep you posted > > > > > > > > > In a message dated 7/25/2003 7:36:54 AM Central Daylight Time, bec@xxxxxxxxx > writes: > > > Does anyone have any information on a mixer amp made by a company called > > Earth Sound Research. On the back of the unit it says POWER SYSTEM EARTH Sound > > Research, ISC Audio Inc. MODULE 340. It was made in Farmingdale, NY. I am > > needing information on the output transistors. The part number on them is > > 59-4004-B, below that number is 7641, they are TO-3 case and appear to be NPN > > silicon. I can't find any information on these and my educated guesses have > > not faired well either. Thanks in advance. > > Gary Pahls > > Beloit Entertainment Center > > Beloit, KS > > > > > > **************************************************************************** * > Classifieds! Buy or Sell! > http://sell.tech-assist.org > The Tech Address Book: > http://www.tech-assist.org/secure/tip/contact.htm > Add a Repair Tip Here, or Change/Remove your Email Address: > http://www.tech-assist.org/secure/tip/main.htm > Lost Password: > http://www.tech-assist.org and select "Lost your Login Info?". > Email Archives: > //www.freelists.org/archives/techassist/ > ***************************************************************************** Classifieds! Buy or Sell! http://sell.tech-assist.org The Tech Address Book: http://www.tech-assist.org/secure/tip/contact.htm Add a Repair Tip Here, or Change/Remove your Email Address: http://www.tech-assist.org/secure/tip/main.htm Lost Password: http://www.tech-assist.org and select "Lost your Login Info?". Email Archives: //www.freelists.org/archives/techassist/