AUDIO NOTE KIT 3 HOW TO
AUDIO NOTE KIT 3 MANUAL

27 microfarad 400 volt rated types would do the job. Another significant improvement came about when a technician friend suggested that the coupling capacitors were of too high a value creating a bass response that was too extended for the amplifiers power rating. I left the Beyschlag metal films in all non signal areas as they sound relatively good and are very reliable. Further improvements were had by changing resistors in the signal path to 1 watt carbon film types. The most significant improvements came when I replaced the bridge rectifier with BYW96E soft recovery diodes, result bigger warmer smoother more extended sound. I have tried many combinations of valves (NOS and current production), and the best compromise I've found is Sovtek 12AX7WXT (not the+version), Sovtek 6SN7, and Sovtek 6V6GT. The amp is very good stock standard, but it does respond well to a bit of judicious tweaking. I have been the happy owner of a Kit 4 for almost 5 years, during that time it has never failed to musically satisfy. He's running an expensive and damn lovely sounding single ended solid state at home, but he is loving this amp ! My eldest step son Kenin Heavin is up for the hollidays, wants to take this amp back with him.

AUDIO NOTE KIT 3 HOW TO

I feel confident that if you LEARN HOW TO SOLDER you can build this amp for a fist project. With the frightful pricing of sinle ended amps, this is a honey. I have tried with it, I needed to bypass the volume controll, and replace the Sovtec 6SN7,s to get the amp 'more better'. Thansparent, punchy, extended but not rude treble. The only trouble I had was bolting the 2 output tranformers to the chasis, It was the combination of cardboard hands and the dyabolical nylon nuts ! Instructions were sequential and adaquate, I choose to use Audio Note Silver content solder, also from Steve, which to me sounds good,but is not as 'wet' as other solders, so get it and fool with it before you put the iron on the first part. The product was well shipped, and the selection of Iron, capacitors, resistors and wire was all I could ask at this price point. I am not a technician, but am a keen hobbyist, enjoying his hobby, I find eqipment restoration and construction very satisfying and forever interesting.unless I an having troubles and want to put a bullet through said project or said self !I ordered a kit 4 from Steve at Angela Insttraments, to keep me busy while recovering from a surgery. I guess it sounds safe enough to go with the better sounding KR 300BXLS as long as the 15 second loud howling/DC settling noise doesn't damage my loudspeakers.As my interest in audio evolved I was drawn to restoring audio equioment. it is a parallel single ended monoblock but there is a separate voltage regulator for each tube. (and it does stop completely)Īlso the Texas Instruments LM-1084 5V DC voltage regulators in these amplifiers are rated at up to 5A, with 300BXLS filament draw of 1.9A. Perhaps the construction of this tube makes it ultra sensitive for those brief 15 seconds. KR website states that this tube has 4 filaments and 32 'functional cathodes'. I'm guessing the 300B XLS is more powerful and apparently more sensitive to this transient DC ripple, thus the loud howl transmitted through the loudspeakers. With ordinary WE style 300Bs this translates into a low level hum from the amplifier which is transmitted into the loudspeakers.

AUDIO NOTE KIT 3 MANUAL

I found a passage in the Audio Note Kits manual that states that 'for 15 seconds after power on the amplifier will hum as DC current stabilizes but it should disappear completely'. Thank you for any and all advice! Again the 300B XLS tubes sound fabulous in the ANK PSE Interstage Monoblocks after the initial inrush of power. From what I read the 300B XLS has higher filament and plate currents and plate voltage but it shouldn't stress normal 300B amplifiers, which will provide the standard 1.2 A to its filament. (Sounds like a toilet with a bad inflow valve) I don't think the loud howl is doing any damage to my KEF Referece 3 drivers, but I am a bit concerned as to the safety of my loudspeakers and new amplifiers. The ONLY thing that concerns me is, at turn on, when power is first supplied to the monoblocks, there is a loud howling/moaning sound from each loudspeaker lasting 8-10 seconds then completely disappearing. I installed them in my new ANK PSE Interstage Monoblocks and they sound incredibly good. I read that they are drop in replacements for a WE style 300B but will only deliver standard 8 watts, which is fine. However, I have 2 pairs of unused KR 300B XLS Power tubes I bought 10 years ago. They arrived with Shuguang 300B's which sound quite good. I recently purchased a pair of wonderful Audio Note Kits (ANK) Interstage Parallel Single Ended Monoblocks, factory built.

Audio note kit 3