Is the adjective ultra linear exclusively associated with highfidelity amplifiers. Acrosound, philadelphia from preamplifier s1001 to ultra linear ii, united states of america usa, 53 pictures, 16 schematics, 27 tubes, radio catalog. The tube cage is present and included in the sale, but i dont believe that i ever had the bottom plate. Ultra linear ads alpine audiobahn audiovox bazooka cascade cdt audio clarion crunch crystal delphi skifi directed audio dynamat emerson farenheit. The technology used for this linear amplifier contains hv devices that have a drainsource junction breakdown voltage v ds, max of 120 v and a gateoxide breakdown voltage v gs, max of 18 v, and it contains mediumvoltage devices with a v ds, max of 50 v and a v gs, max of 5 v. Acrosound ultralinear ii amplifier schematic needed please. Acrosound, philadelphia from preamplifier s1001 to ultra l. Acrosound diagrams, schematics and service manuals download for free. Used acrosound 2020 tube amplifier ultralinear tube amp. Another question, is the output transformer on this amp to350. Ultralinear electronic circuits are those used to couple a tetrode or pentode vacuumtube also called electronvalve to a load e.
The 200k 2 watt resistor shown should actually be a 4 or 5 watt. Acrosound ultralinear output transformers amplifier schematics. Ultra linear leaves me with the impression of sitting much further back in the performance, while triode brings me in closer and gives me a better sense of where the instruments are on stage. Many would be surprised to learn that the 200watt marshall model 1967 head was an ultralinear power amp. The capactiors in the power supply may be made up by hooking lower voltage capacitors in series, the bypassing each with a 200k or 220k 2 watt resistor. The device is self contained with all matching and bias circuitry included. These systems are ideal for cleanrooms air showers and pharmaceutical applications. Software sites tucows software library shareware cdroms software capsules compilation cdrom images zx spectrum doom level cd.
Gianfranco scasciafratti, i0zy, and has been developing electronic products with high technological content for the telecommunications industry since then. I wanted to really understand the differences and possible advantagesdisadvantages one may have over the other in particular situations. Below you will found our manuals on the phase linear 400. Nov 08, 2009 acrosound ultralinear ii amplifier schematic needed please posted by wpod a on november 8, 2009 at 17. We help you to save time and money by finding your needed schematics.
Acrosound ultralinear ii help audiokarma home audio stereo. Ultraclean atmospheric ii designed to meet iso 14644 class 5 cleanroom applications. Acrosound, philadelphia from preamplifier s1001 to ultral. What are the tonal differences between these two modes of operation. Usually retro somtimes vintage sometimes modern but always hifi. The box symbol indicates nothing but i use it for the day job and some schematics that i produced for this site using my schematic and analysis software. Pl83 6bq5 equivalent singleended ultra linear stereo power amplifier. Dynaco stereo 35 tube amplifier for sale us audio mart. Post comments atom just a place to post some of the hifi information i have collected over the years. These are nice quality ultra linear ul622iwl in wall ceiling speakers 180 watts. Acrosound ultralinear ii vacuum tube monobloc amplifier in very good condition, especially in light of its 50 plus years in service. High quality 10 watt ultralinear amplifier l f sinfield. While the waves masters bundle is focused to provide purist quality tools for mastering.
Page 1 waves linearphase multiband software audio processor users guide waves linmb software guide page 1 of 28. Also, the link that ive posted is for an acrosound ax7au7 pp 6550, is this similar to the ultralinear ii. Kodi archive and support file community software vintage software apk msdos cdrom software cdrom software library console living room software sites tucows software library shareware cdroms software capsules compilation cdrom images zx spectrum doom level cd. From the quad ii handbook redrawn in the original style. Acoustic g80t g100t schematic acrosound ultra linear output transformers schematic action electronics ctv310l schematic ada rocket ra10 ra20 schematic adi ar146 446 schematic adi at201 schematic admiral ad20md21 schematic advent 400 schematic advent m300 schematic aeg geadur605wlk schematic aeg lavamat 511 schematic aeg lavamat 610 schematic. Ultra linear 12 200 watt 4ohm dvc subwoofer buy one get one free. Solar audio speakers ultralinear disco monitor 265. The service manual functions as a repair guide for troubleshooting and sometimes contains tips for refurbishing and. One of the fruits of the program was development of the ultra linear. Hans has kindly agreed to make the pcb layout gerber files available for interested readers. Free acrosound diagrams, schematics, service manuals. Pl83 6bq5 equivalent singleended ultralinear stereo power amplifier.
These are what a manufacturer calls post production changes. Pl83 6bq5 equivalent singleended ultralinear stereo. Select picture or schematic to display from thumbnails on the right and click for download. Ultra linear 61,6 circuit using to30 transformer page 9 ultra linear circuitry achieved its popularity with the 61. Acrosound ultralinear ii amplifier schematic needed please wpod.
Acrosound ultra linear ii amplifier assembly diagram for. Ultra linear electronic circuits are those used to couple a tetrode or pentode vacuumtube also called electronvalve to a load e. This page contains links to some valve audio amplifier and other schematic circuit diagrams for free download. Treated foam surround dome dust cap nonpressed paper cone rubber magnet cover single 4 ohm voice. Page 2 waves created the linmb to answer to the most demanding and critical requirements when mastering any sound and genre of music. So you usually have to do something as they wont otherwise be hifi. Nice acrosound 2020 tube amplifier ultra linear power tube amp nice rare and very desirable acrosound 2020 stereo amplifier featuring mullard el84 outputs i have enjoyed this amp for years features the famous and great sounding acrosound transformers some of the best ever used in tube amps very nice true sweet vintage tube tone from this classics cosmetically it is in nice shape a few small. Nov 07, 2012 home stereo and general audio discussion forums. Top kodi archive and support file community software vintage software apk msdos cdrom software cdrom software library. The term ultralinear is also called distributed load amplifier wherein the sceen 2 of the tube is dc biased from each half of the primary such that the tap point is 43% of the turns ratio or 18. Ultralinear is a method of using the output transformer as a very local feedback loop to linearize the output section. Download the phase linear 400 manuals for free hifi manuals. Pl83 6bq5 equivalent singleended ultralinear stereo power.
Ultralinear is a special case of distributed loading. Nice acrosound 2020 tube amplifier ultralinear power tube amp nice rare and very desirable acrosound 2020 stereo amplifier featuring mullard el84 outputs i have enjoyed this amp for years features the famous and great sounding acrosound transformers some of the best ever used in tube amps very nice true sweet vintage tube tone from this classics cosmetically it is in nice shape a few. N tube types and circuit variants have been uncovered which. Linear phase eq vs minimum phase eq pro audio files. Does anyone have any information, schematics, technical data, etc, beyond what is stated below about it the acrosound stereo 120 is a dual amp on one chassis using a common power transformer, sort of like stu hegemans 1961 harmon kardon citation ii, but. The biggest collection of acrosound manuals and schematics. Acrosound manuals, schematics and brochures hifi manuals. However, the best results come from the use of the finest quality in all parts of the system, and it is desir. Dec 28, 2010 if the amp is ultra linear then its not the kind of amp trelja was referring to. Ultralinear ii amplmixer acrosound, philadelphia, build 1959, pictures, 7 schematics, 5 tubes, united states of america, semiconductors, audio. In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. The gec 1957 williamson triode amplifier using kt66s had a total of 16 uf for the plate supply.
These changes appear in red so you wont have to read through the entire text searching for them. This amplifier was featured on the february 2004 issue of the highfidelity audio. I am also rebuilding a pair of ultra linear ii amps. The original hafler and keroes 1951 acrosound ultra linear amplifier had a total of 80 uf for the plate supply. In the schematic above i have stripped the amplifier of the entire preamplifier. Amplifiers australian amateur radio dealer, rf solutions. Used acrosound 2020 tube amplifier ultralinear tube. This brings together the basic advan unlikely that the builder be alle to. Acrosound ultra linear ii amplifier service manual 2 photo copy.
Typical applications for this device include driver stages for single channel and multicarrier feed forward linear amplifiers. Acrosound ultralinear output transformers amplifier schematics 1954. An example of that is the citation 2 made by harmon kardon. For model ultralinear ul ii 2, acrosound, philadelphia. Mit ultra linear reference ii model mh 770 15 foot pair single bi wire. Where possible i redraw schematics in the original style and layout so there may be a few inaccuracies please let me know and i will correct them where components are concerned i generally use common symbols for basic parts i. I have studied the circuit and it is the exact ultralinear circuit, but. To purchase ultralinear transformers spares or accessories, please contact the company via their website or visit an authorised retailer. Unfollow ultra linear speakers to stop getting updates on your ebay feed. The original hafler and keroes 1951 acrosound ultralinear amplifier had a total of 80 uf for the plate supply. Acrosound ultralinear ii amplifier schematic needed please posted by wpod a on november 8, 2009 at 17. Acrosound, philadelphia from preamplifier s1001 to ultralinear ii, united states of america usa, 53 pictures, 16 schematics, 27 tubes, radio catalog.
Now its a simple fact that pentodes, left to their own devices, are not very linear. Marantz 8c schematic marantz cd65 mk ii schematics marantz hifi amp schematic. The following is a list of valve and some classic transistor equipment schematic diagrams and some service information to. Acrosound ultra linear ii amplifier assembly diagram for serial no. This website is not affiliated with or sponsored by acrosound. Hans has kindly agreed to make the pcb layout gerber files available for interested readers update. Acrosound ultra linear sch service manual download. Acrosound ultralinear transformers manual product guide. Acrosound ultra linear circuits top quality transformers make any circuit better. Just a place to post some of the hifi information i have collected over the years. Full text of audio magazine june 1956 internet archive. For a list of authorised retailers please contact the company via their website.
Hello and thanks for initial answers here is the photo, after using for two days the loudspeakers i have to say that they sound quite good for me with good bass with 15 woofer. But then how many of us have heard a singleended, directly heated pentode e. Also i am replaceing the 12w carbon resistors with metal film. History tells us that from the three choices of tetrode, triode or ultralinear configuration, the latter was the preferred configuration for 1950s to 1960s hifi, because it offered the tonal sound of triodes, substantially lower distortion particularly intermodulation distortion with power approximating tetrodes, at a cost comparable with. Ive been doing a lot of study about linearphase versus minimumphase equalization. First im interested in the acrosound stereo 120 tube amp. One of the fruits of the program was development of. A total voltage rating of 600v instead of the 1kv and 700v listed should be sufficient. Acrosound ultralinear ii help audiokarma home audio. Acrosound ultralinear circuits top quality transformers make any circuit better.
The maximum achievable output voltage swing using a conventional classab amplifier is. Ultra linear ii 2 power amplifier assembly diagram for serial no. Metal film resistors are typicallt rated at 300 vols max 500 vols. A 180vpp integrated linear amplifier for ultrasonic. Service manuals, schematics, eproms for electrical technicians. However, the best results come from the use of the finest quality in all parts of the system, and it is desir able to use quality circuits and quality transformers together. Ultra linear ii amplmixer acrosound, philadelphia, build 1959, pictures, 7 schematics, 5 tubes, united states of america, semiconductors, audio.
The owners manual is used as an reference guide, instruction manual and instruction book. Ultralinear ii amplmixer acrosound, philadelphia, build 19. First described in audio engineering, november, 1951 the cricuit is still among the finest available. This is model 75, and features a versatile acro output, better known as acrosound ultra linear output transformer acro produced some of the nicest transformers of the era in nearby philadelphia. It turns out that results of that test were comparable with these two monoblock amplifiers. Acrosound ultralinear ii mono tube amplifier amp ulii. The circuit is a masterpiece in simplicity and audio engineering. Customer repair drawing supplied with repaired amp all part of the service. Acrosound transformer info and amplifier schematics pdf. To purchase ultra linear transformers spares or accessories, please contact the company via their website or visit an authorised retailer. But, the only two i can say with certainty are the legendary quad ii, introduced in the 1950sreissued in the past decade, and the audio.
This is model 75, and features a versatile acro output, better known as acrosound ultralinear output transformer acro produced some of the nicest transformers of the era in nearby philadelphia. This amp has the commercialized version of one of acros largest 6550 output transformers strongly resembling the to 330. Ultra analog va3 is an analog synthesizer plugin that captures the sound of vintage and modern classics in vst2, vst3, audio units au, and aax formats for reason, live, logic pro, pro tools, cubase, reaper, cakewalk, sonar, fl studio, and many more. Someone returning to this site will remember an article on the comparison between an ultra linear and conventional pentode connection. If my tastes were in hard driving music like rock, i might like the muscle and drive of the ultra linear. Although popular with tube amplifier manufacturers because of the higher power output it yields, ultralinear mode does not command a large avid following the way that triodes do. One of the fruits of the program was development of the ultralinear output stage which constitutes a basic advance in the audio art. Furthermore, the ultra linear ul622iwl are simple to place and setup, with their functional design, so you can use your new system immediately for highquality audio enjoyment.
After putting the amplifier into operation i found a few changes were necessary to the power supply. Ultra linear is a special case of distributed loading. Save ultra linear speakers to get email alerts and updates on your ebay feed. Linear audio vol 12 contains an article by hans polak on the design of a nonplus ultra phono preamp. This site helps you to save the earth from electronic waste. Acoustic g80t g100t schematic acrosound ultralinear output transformers schematic. Sep 23, 2019 i am also rebuilding a pair of ultra linear ii amps. With regard to ht current drawn and power output, this.
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