|Greg’s 2x100watt TK2050 Amplifier Project|
I was contacted recently from Gregory Wisniewski, a reader of the www.justblair.co.uk website. He wanted to share some details of a project that he is quite rightly pleased with and I was more than happy to oblige.
Based on the Sure 2x100watt TK2050 amplifier. Greg has performed similar modifications as I described in my first impressions article. In his own words:
“For the mods I basically followed what was on your site for the Sure T amps.
I removed the input filters C16, C17, R14 and the corresponding parts on the other channel. I also removed 2 transient voltage protector chips that were placed under the on board RCA jacks. I probably could of left these.
For input caps I used 2.2uf polypropylene Jantzen crosscaps. I was able to fit the leads into the same holes of the 0.22uf. caps that I removed. I am using the recommended 24volt PSU from Sure.
I liked the way you had cooling towers come up through the case of one of your projects so I thought I would try it.
The heat-sink, an Ainex HV-3747BL multi chip heat-sink is similar to the Zalman ZM-NB47J but when I compared them at the store the one I decided to use had a full size base where Zalman indents there a bit. So I thought the non Zalman one would cover the 2 chips better.. I used Arctic Silver 5 grease for the heat-sink.
Originally the heat sink was 5mm lower in the case But I thought it would be good to have the heat-sink protrude a bit more out of the case. I now have the board on 15mm metal feet. I have a blue led inside on the heat-sink. The amplifier usually stays around 50 degree's so no problems with the cooling.
The cases are from Takachi. They originally come with ABS plastic ends so I made my own from some brushed aluminium plate I had except for the back of the PSU case I used the original ABS end. The square hole for the heat-sink was cut with a table-top jigsaw.
The sound is great! I have built 2 other T amps. But the Sure one using the mod directions from www.justblair.co.uk is definitely the best performing.”
I am certain that you will agree with me, Greg has made a great job of his Sure 2x100watt TK2050 amplifier, the casework is elegant and I am a sucker for the blue led lighting on the cooling stack… Not strictly required for top quality sound perhaps, but presentation counts as well!
I have obviously heard (and own) a very similar configuration of amplifier and can testify to the quality of the sound produced. With looks and sound quality to match it is no wonder that Greg is pleased.