SKU: 44130772317

VPI ADS Power Supply

$1125.00 $1250.00
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Description

VPI ADS Power SupplyADS Drive System The ADS design includes two pure analog frequency generators featuring low distortion and noise; a high current Class A B amplifier that is transformer coupled to the turntable output; analog control logic for low noise operation; 33 45 RPM analog speed adjustment controls with center detent positions that are factory calibrated. Created by our previous Director of Electrical Engineering, Michael Bettinger. Operational Features The

ADS Drive System

The ADS design includes two pure analog frequency generators featuring low distortion and noise; a high current Class-A/B amplifier that is transformer-coupled to the turntable output; analog control logic for low noise operation; 33/45 RPM analog speed adjustment controls with center detent positions that are factory calibrated. Created by our previous Director of Electrical Engineering, Michael Bettinger.

Operational Features

The ADS includes a lighted power on/off switch allowing it to remain powered up during listening sessions for the oscillators to remain warmed up for lowest distortion. There is a separate run/stop switch to control the motor operation. The ADS also utilizes separate 60 Hz and 81 Hz oscillators to eliminate unnecessary switching circuitry in the oscillator circuits for long term speed stability and low oscillator distortion. Turntable speed is chosen using a switch located between the 33 RPM and 45 RPM speed adjustment controls; LEDs indicate the Run/Stop condition and chosen speed. Speed adjustment controls provide a center detent position that is factory calibrated to 60 and 81Hz +/- .02 Hz in their center détente position. The controls also provide fine speed adjustment of approximately 3 Hz through continuously variable linear adjustment controls. The circuitry provides a startup voltage of approximately 120VAC for 8 seconds on startup to assist quick speed ramp of heavier platters, then reduces to 92VAC for its steady state run voltage.

Speed Control and Adjustment

The front panel contains a two-position push-button switch for selecting either 33 RPM or 45 RPM operation. Pressing the switch either latches it in or releases the switch to its outward position for 33 RPM operation. There are separate speed adjustment controls for 33 and 45 RPM. The controls have a détente center position that is factory calibrated for 60 Hz (33 RPM) and 81 Hz (45 RPM). The speed is also continuously adjustable +/- 3 Hz for fine tuning of the platter speed using a stroboscopic disk and 60 HZ light source. Blue LED indicators adjacent to the controls indicate which speed is set at a glance.

Motor Stop and Run

The ADS is meant to be left powered on during the listening session. The platter is started and stopped by the front panel Run/Stop momentary push-button switch. There is an LED indicator the glows red when stopped and green when the platter is turning.

System Power

There is an IEC power module on the rear panel to supply AC power to the ADS. The IEC module contains a fuse drawer that holds a 1-amp slow blow fuse protecting the ADS from electrical system malfunctions. AC power to the ADS is controlled by the power switch located on the left-hand side of the front panel. When the ADS is powered up, the indicator in the switch glows blue indicating the internal power supplies are functioning properly.

Output to Turntable

The 125 VAC max output to the motor is supplied by the identified AC receptacle on the rear panel. The receptacle output provides a maximum 20 watts. Higher wattage loads will seriously damage the ADS.

Easily Switch 33/45

"...a shockingly big deal — the ADS is killer." - Scot Hull

​ 

Key Features:

​VPI ADS

The Machine:

  • The platter is started and stopped by the front panel Run/Stop momentary push button switch.
  • The front panel contains a two-position push button switch for selecting either 33 RPM or 45 RPM operation.
  • There are separate speed adjustment controls for 33 and 45 RPM.
  • The controls have a détente center position that is factory calibrated for 60 Hz (33 RPM) and 81 Hz (45 RPM).
  • The speed is continuously adjustable +/- 3 Hz
  • Blue LED indicators adjacent to the controls indicate which speed is set at a glance.
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SKU: 44130772317

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4.7 ★★★★★
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Product Reviews
K
Verified Purchase
Ken Hill
Birmingham, US
★★★★★ 5
Very informative and well written. Check out Phrasing.
Format: Kindle
Very informative and well written. I especially like the concept of Phrasing as an aid to meditating on the Word. I don't know Greek and got a lot of value out of it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 3, 2017
J
Verified Purchase
J. Jarvis
West Palm Beach, US
★★★★★ 5
accessible Greek for all
Format: Paperback
I got this book for my wife, who is a complete Greek novice. She enjoys it. And it is accessible for her. The book is divided into three sections, where each section gives an increasingly in depth summary of nt Greek. This is a great idea; if you only want to know the basics, do section 1. If you want to know a little more, perhaps do section 2 as well. Section 3 starts to get into the basics that you would hit in a first year text book. This is not a replacement for a first year textbook; this is for someone who doesn't want to commit to a first year textbook. For a extra fee, you can order helpful videos done by the author himself.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2014
H
Verified Purchase
Henry R. Ford
Whiting, US
★★★★★ 5
Thank you for excellent service. This book is very informational and written ...
Format: Paperback
Thank you for excellent service. This book is very informational and written in a clear and understandable manner. I have not completed reading it yet, but so far I am enjoying it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 31, 2015
A
Verified Purchase
AL
Natrona Heights, US
★★★★★ 4
VERY GOOD FOR ITS PURPOSE, SOME RESERVATIONS
Format: Paperback
To same space, WM= William Mounce. BBG=Basic Biblical Greek Grammar. This is an expanded edition of the earlier book of the same name. One will recognize many elements of the author's BBG, but this is more of "how to use Greek for exegesis" so it doesn't have a lot of paradigms etc. WM even puts in the "professor" character from the BBG 3rd ed. He has chapters on word studies, translations, textual criticism, advice on how to use commentaries, etc. It's written at an elementary level so it's an excellent guide for someone just wanting to understand more deeply the scriptures, or to check the accuracy of translations. If one wants to go more in depth, he/she can consult the intermediate grammars like Gerald L. Stevens or Wallace (that one is really detailed!). WM divides the book into sections of increasing depth - Fundamental Greek, Church G., & Functional G. He deals with verbal aspect in several places. He says tenses do have the time element in the indicative mood, but it's second to aspect. Outside the indicative, only aspect is a factor. The 3 are UNDEFINED, CONTINUOUS, and (traditional perfect) complete w/ continuing results. Whether the traditional perf/pluperfect is THE meaning of the tense, or an aktionsart, I will leave to the reader. Sometimes these 2 tenses represent a state. The traditional perfect is there much of the time, determined by the meaning of the verb and context. One should look at how the verbs are actually used (sometimes it's really hard to tell why the perfect was used). Perhaps the old proverb applies to Greek i.e. "the only hard and fast rule, is that there are NO hard and fast rules". The book is helpful for students of the word. One can learn the plan of salvation from good translations, but knowledge of the Greek can answer questions, like the seeming contradiction between (ROM 3:23 & 1 JOHN 1:08,10) with (1 JOHN 3:06,09). Or the question of why Jesus told Thomas to touch Him, but said to Mary "touch Me not" in (JOHN 20:17). Understanding the (normally) continuous/repeated of action of the present tense can answer these questions. I believe the book has a few flaws (thus 4 stars). I think WM gets some things wrong, like when he says a commentator should never say something in the Bible is clear or obvious. One might say this about figurative language - like REVELATION, but if the Bible isn't clear about say, what one must do to go to Heaven, then what's the point? Also WM says on pg 126 (2nd "dot") a student can't "argue" with a commentator or a translator - he/she doesn't know enough Greek. One doesn't have to be a scholar to be able to see when someone is putting in his/her own theology (at least there are enough clear passages in the Bible that one shouldn't have to). The great scholar A.T. Robertson mentions this on pg 389 of his "big book" - there comes a point when grammar stops and theology takes over. Even WM says there're commentaries he doesn't recommend. I recommend the book. As to the few problems, always remember what Douglas K. Stuart said in his book on commentaries "just because one is a PHD, doesn't NECESSARLY mean that he/she is right and you're wrong". Always let the Bible speak for itself.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2015
J
Verified Purchase
Jarvis Hearn
Lexington, US
★★★★★ 5
Greek for the Rest of Us
Format: Paperback
I wish I had had this book when I first started New Testament Greek back many years ago. (I'm sure my grades would have been better, and my understanding much better.) I got this book to brush up on my Greek and it has helped a great deal.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2014

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