Register | Log In
FAQ > FAQ - Info - Alpha's 9500 sub 180 second warmup > 

Your Cart is Empty
View Cart
 
 
PRODUCTS
REPLACEMENT PARTS
FAQ
FAQ - General - How to Purchase an Amplifier
FAQ - General - Contact Information
FAQ - General - Phone Support Policy
FAQ - General - 50-25-25 Alpha Payment Plan
FAQ - General - Bank Wire Instructions
FAQ - General - Alpha Warranty
FAQ - General - Do We Buy Preowned Equipment?
FAQ - General - Do we Consign Equipment?
FAQ - General - How to get your product repaired
FAQ - General - How to pack and send your product to RF Concepts
FAQ - General - Newsletter Archive
FAQ - Info - Should I Turn My Amp Off or Leave It On?
FAQ - Info - Amplifier Comparison Chart
FAQ - Info - Amplifier Production Dates
FAQ - Service - Which amps do we presently service?
CONTACT US
FAQ - Info - Alpha's 9500 sub 180 second warmup

The specified warmup time for the 8877 tube is 180 seconds. This is a very conservative time, that covers all possible operating conditions, such as heater voltage being at the extreme low end of the specified range. Tests at RFC have shown that tubes routinely reach full emission much sooner than this, especially if the amplifier has only been off for a short period of time. To take advantage of this, the emissions-based warmup timer has been implemented. This timer is disabled by default, so that the full 180 seconds is required. If there is no rush, it is recommended that the amplifier be left to warm up this way. If there is a need to get it on the air more quickly, then enable the emissions checking, and the amplifier will be on the air much quicker. We check for tube emissions, and when we find the tube has warmed up sufficiently, we add 30 seconds after emission is detected, assuring good margin in this process.

 

This web store and web site powered by NetSuite ecommerce software