Bottlehead recommends 60/40 or 63/37 Tin & Lead solder for its ease of use. I used the simple soldering starter kit as well as 60/40 tin & lead solder, both from Jay Car.
#Bottlehead crack manual professional
I don't solder often so I haven't invested in any premium or professional soldering tools. I would recommend covering the 9 holes (cut a circle in masking tape) and everything around it and paint it as well. I didn't notice this until after assembly but the smaller tube does not cover its entire socket meaning a bit of white would show. The final finish was good but would also require a clear coat to protect it in case it scratches. I applied 6 coats with 2-3 minutes between each coat and left it to dry for 24 hours. Along with the chassis, it's important to also paint the screw tops, power transformer bell (recommended as it will rust unless treated), both amp brackets as well as the screw tops for an all black finish. I would suggest to not go with a hair type roller (at least not a cheap one) as the hair generally falls off when painting and sticks to the paint.Īfter painting, I stuck on the four feet.Īs the chassis gets hot when the unit is on, I sprayed the plate with Engine Enamel from White Knight. The final finish turned out much better as a roller spread the paint out evenly. I sanded most of it down and then did another two coats with a foam roller. The finish was uneven and imperfect with the brush not being able to distribute the stain evenly. Second coat of stain, you can see the imperfects showing: Between each coat, I also did a light 400 grit sand. I used a paintbrush for the first three coats with 12 hours wait between each layer. As it's a two in one (Stain and Varnish), it saves a bit of time having to paint varnish (shine/polish) on afterward.īefore painting, I glued the cabinet together and sanded it down with 240 grit sandpaper thoroughly. Without any other colours on me, I decided to go black on black (I'm calling it The Midnight Crack).įor the wood stain, I went with Feast Watson's Black Japan Stain and Varnish. I started with staining the wood and painting the chassis. But on the Bottlehead Crack, they are OTL Tubes which changes the sound output (for the better). These tubes are to increase and power the audio signal. An amplifier is used to boost the volume when this occurs. Some audio equipment had a high impedance, making them sound and quiet when the volume is maxed out. I waited until Black Friday to grab it from their website for 15% off.Ī quick write-up of what this is and why I got it: The Bottlehead Crack is a high-end amplifier for your headphones. I bought the Crack (and its Speedball upgrade) after I got my hands on a pair of Massdrop x Sennheiser HD 6XX Headphones. This is a quick build log of Bottlehead Crack OTL tube amplifier with some pictures and little stories.
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