Posts filed under: Collectible Stuff

Passive Preamp with DACT Stepped Attenuator

I plan to separate my system volume control with dedicated passive preamp. Before, I planned to take one attenuator from Goldpoint but due to some reason, I changed my mind and took one from DACT. A stepped attenuator has advantage...
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TentLabs XO2 @ 27 MHz

I need some touch for my old Toshiba SD-2960 DVD Player. So here is the TentLabs XO2 @ 27 MHz, a perfect yet affordable reclock solution for my wallet. This is actually a simple PCB. Not all parts used, since...
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Be Prepared for Extreme Capacitors Battle

Most of the time, money could buy anything – except time (and sometime, love 😉 ). Like this Duelund CAST-PIO capacitor. You have the money, but you have to wait around 6-8 weeks (not including shipping time), before you could...
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Nippon Chemi-con RWE 820uF/550VDC

I digged my old boxes and found this old vintage capacitor, Nippon Chemicon RWE 820uF/550VDC. Very big in size (a little bit bigger than my ASC 40uF/440VAC and surely a giant compared to AA battery). This electrolytic capacitor is a...
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Beautiful Glowing Tubes This Week

I dig my tube boxes and found this old tube. Not a really expensive or most wanted tube, yeah… just an old Western Electric 393A tube. It’s a Argon and Mercury Vapor filled Thyratron tube. According to the datasheet, the...
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Beautiful Glowing Tubes

One factor that makes me like tube is its glow. Well, it’s hard to explain, but some tubes have a beautiful color, especially in dark room. Here is some of them. Below is the 0A3/VR75 tube. It has red/fire color....
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Weekend Tube Testing with Knight 600 Tube Tester

After previous trip to “trash bin” shop, now it’s the time to test it 😉 So I open my old Knight 600 Tube Tester and fire it up. Picture below shows my Knight 600 testing Amperex 6BQ5/EL84 tube. Not bad!...
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Amperex 6BQ5/EL84

Amperex 6BQ5/EL84 from “trash bin” shop 😉 Not bad for some cheap experiment!...
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Digital Volume Control

I’m thinking of a digital volume control, instead of passive one (with potentiometer or stepped attenuator). Hmm… Searching around the net, I found some IC from Maxim. I grabbed some (with different packaging and functionality). Now I need to think...
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“Poisonous” Sound

Mercury: a heavy silvery toxic univalent and bivalent metallic element. That’s what I get from Google or common dictionary. Well, as long as it has good sound, it’s deserved to be auditioned. Presenting, JAN/RCA NOS 83 Tube Rectifier. Thanks to...
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Extra Ammunitions for Gainclone Project

I’m thinking of… a full Black Gate Power Supply 😉 Well, it’s not a dream since I have enough Black Gate F Series stock on hand. One value only, 680uF/65V. I need to use at least 10 pcs each (symmetrical power...
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Gainclone Challenge: Picking My Agents

A Gainclone challenge? Why not? Solid state? Why? Why? Why? Why? Why? Wise man says ask “Why” five times. But I think I will end up with same answer 😉 Sorry! Just consider this as a small killing time, boredom...
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