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LC25/40 Main Parts Kit
LC25/40 Main Parts Kit
US$1.00
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VP-Gainswitch Resistor Set
[VP-GS-Resistors]
 US$1.50 
Number of Products in stock: 3027

Click to enlarge

Click to enlarge

The VP-Gainswitch Resistor Set is a complete set of all required resistors required to add a stepped gain switch mod to any of our mic preamps. All eleven resistors in this set are Xicon metal film, 1/4 watt, with a 1% tolerance.

The resistors included in this set, along with a Grayhill 71 series switch and appropriate adapter PCB, will create an equivalent to a 25kCCW log pot, which is perfect for an API style mic preamp circuit.

With this set, you can expect the following 12 gain steps:
+25.39dB
+29.53dB
+33.48dB
+36.46dB
+39.52dB
+42.52dB
+45.45dB
+48.44dB
+51.48dB
+54.46dB
+57.48dB
+60.43dB

From my tests, the actual gain may vary a little but should not differ more than +/- 0.1dB. The above measurements where taken from a VP26 preamp loaded with a gar2520. This preamp did have the t-pad attenuator installed. An Audio Precision Portable One Plus was the test instrument.

***Please note: Complete Gainswitch bundles including the PCB and Grayhill switch can be found here.

Additional information:

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Stuffed

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Installed



PDF specs

This product was added to our catalog on Monday August 08, 2011.
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Classic Audio Products, Inc. is not affiliated with API. Customers and fans should not refer to Classic Audio Products, Inc. as "Classic API." API is a registered trademark of Automated Processes Incorporated. Classic Audio Products, Inc. has no affiliation with Automated Processes Incorporated.
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