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Misnomer RMS Power by Paul W. Klipsch Vol. 20 No 5 (June 1972) pg 402, 403 "Misnomer RMS Power" by Paul W. Klipsch JAES (Journal Audio Engineering Society) Vol. 20 No 5 (June 1972) pg 402, 403 https://secure.aes.org/forum/pubs/journal/?elib=18876 If you are are member its free. Otherwise, its...

Modulation Distortion In Loudspeakers -Paul W. Klipsch JAES Vol. 17 No. 2 April 1969 "Modulation Distortion In Loudspeakers" by Paul W. Klipsch JAES (Journal Audio Engineering Society) Vol. 17 No. 2 April 1969 pgs 194, 196, 198, 200, 202, 204, 206 http://www.aes.org/e-lib/browse.cfm?elib=18850...

Corner Speaker Placement by Paul W. Klipsch JAES Vol. 7 No. 3 (July 1959)pgs 106-109 "Corner Speaker Placement" by Paul W. Klipsch JAES (Journal Audio Engineering Society) Vol. 7 No. 3 (July 1959) pgs 106-109 http://www.aes.org/e-lib/browse.cfm?elib=18811 If you are are member its free...

Keystone Electronics Part #4702 Fibre Shoulder Washer for Phase Linear 700 Hum Shield The fibre shoulder washer for the Phase Linear 700 (aluminum) hum shield is Keystone 4702: https://www.keyelco.com/product.cfm/product_id/2202 available from the following suppliers: Mouser 15 cents each...

According to Dean (Phase Linear's last service manager at the Lynnwood, Washington location) the aluminum plate was used as a "hum shield". Just how effective it was will be determined in some of my upcoming tests. NOTE: The later Phase Linear 700B's and 700 series 2 amplifiers had an...

NEC uPC4741 Data Sheets Don, For reference purposes.... Here are some datasheets for the NEC uPC4741 that were published over the years. Ed

Swil, Are you located in Minnesota? If so, perhaps Lee who lives in Wyoming could help.

Without spending a lot of time on this, here are my musings on the subject...... (I also spoke to Lee yesterday about this.) Relays may impact the damping factor due to the "initial contact resistance" of the points. However, how much damping factor is really needed for good audio has the been...

FTC "Amplifier Rule" & Dynaco's 2 Page Ad in "The Audio Amateur" 4/1974 On October 16, 2018 americanradiohistorymuseum added (98) issues of "The Audio Amateur" from 1970 to 1999 https://www.americanradiohistory.com/Audio_Amateur.htm I went through every issue. There are many interesting...

The eye doc says no bending, heavy lifting and (worst of all) S E X for a little while. Maybe he is afraid my eyes will pop out. They certainly will with the Navo girls. LOL

Phase Linear DRS250 & DRS900 Review (The Sensible Sound Spring 1984 Number 21) Here is perhaps one of the last reviews done on any Phase Linear audio components while the company was still in business in 1984. Albeit this was at a time when Jensen had ownership of Phase Linear.

I'm sorry for the slow reply. I am recovering from some eye surgery I had yesterday. The Phase Linear DRS900 was first introduced in January 1982 and by December 1982 Phase Linear shut down its Lynnwood Washington plant. Jensen (which had acquired Phase Linear) moved production to Laredo Texas...

Phase Linear 400 Series Specs I have created a new thread for all of the Phase Linear 400 series amplifier specs obtained from Phase Linear sales brochures, owner's manuals and service manuals...

Phase Linear 400 Series Specs I have created a new thread for all of the 400 series amplifier specs obtained from sales brochures, owner's manuals and service manuals...

Here is my best effort at putting into one place all the specifications for Phase Linear 400 series amplifiers (i.e. 400 series 1 and 400 series II). NOTE: Please start with file number 1 (Phase Linear 400-the first 400) and work your way towards file number 12 (Phase Linear 400 series II-the...

Phase Linear 700 Series Specs I have created a new thread for all of the Phase Linear 700 series amplifier specs obtained from sales brochures, owner's manuals and service manuals...

Phase Linear 700 Series Specs I have created a new thread for all of the Phase Linear 700 series amplifier specs obtained from Phase Linear sales brochures, owner's manuals and service manuals...

Here is my best effort at putting into one place all the specifications for Phase Linear 700 series amplifiers (i.e. 700, 700B, 700 II and Pro 700). NOTE: Although I attempted to load all the files so they would appear in numerical order below that doesn't appear to be the case. So please...

I received the Crown DC-300A clip-on heat-sinks yesterday. They are 6-9/16" to 6-5/8" tall. A bit tall for 400 series heat-sinks which are typically 6-3/16" tall. They are however a better fit for 700 series heat-sinks which are approximately 6-5/8" to 6-3/4" (depending on which series 700 you...

Early PL400C series pc boards used in 400 series 1 amps had dc offset pots. Later PL14's did not. Likewise, the PL0171 pc board used in 700 series I also had dc offset pots. PL14A, and PL20's used in 700B's did not. The PL36's pc boards used in 400 and 700 series II amps had no dc offset pots...