-40%

Daven Attenuator RC-239-1 Ladder 150/300 Ohms 2DB RCA BC-2B

$ 36.93

Availability: 100 in stock

Description

We are selling a vintage Daven RC-239-1 attenuator that was removed from an early 1950's RCA mixing console model BC-2B Consolette.  This control has been tested only with a multi-meter, otherwise sold AS IS, parts/repair.  This unit has wear from use/storage like scratches, scuff, dust and some corrosion.  No control knob included, but does have the mounting screws.  Sold AS IS, parts/repair, please see high-res photos for more details.
Details from Label:
Daven
Type: RC-239-1
Network: Ladder
150/300 ohms
Attenuation  2DB
147875-2
Testing Method:
Each unit was testing using this method.
1) Take the probes of your ohmmeter. Put them on the two ends of the potentiometer. What you see on the display should be within only a few ohms of the potentiometer's rated resistance (see Note below). If the reading is way off, then that means that you have put one of the probes of the ohmmeter on the wiper. If you find it difficult to tell which tabs are the ends, and which tab is the wiper, try different combinations with the probes until you get a proper reading.[4]
2) Turn the controller all the way to the other side. Make sure to keep the probes in constant contact with the ends while doing this. The resistance should stay the same or only change very slightly.[5]
3) Take one of the ohmmeter's probes off the end and put it on the wiper. Now you have to turn the controller slowly all the way to the other end and watch the ohmmeter while doing so. When you reach the end, the resistance should only be a few ohms. At the other end the value should be the maximum resistance of the potentiometer. The resistance should gradually and slowly increase as you turn the controller and there should be no sudden jumps.[6]
No further testing was done on this Daven units and thus is the reason why we're selling them AS IS for parts/repair.
Terms & Conditions:
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Attention Bidders
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Payment is due 2 days after the auction has ended
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All items are
Sold AS IS
(unless otherwise stated),  Worldwide Shipping (GSP 60+ Countries),  Payment due 4 days after auctions end, Ships 1-2 days after payment is received... Thank you & Happy Bidding.