justinsweber Posted December 12, 2014 Share Posted December 12, 2014 (edited) SOLD Edited December 14, 2014 by justinsweber 1 Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted December 12, 2014 Share Posted December 12, 2014 Finally an amp with the RCA's out the back! Looks great. Quote Link to comment Share on other sites More sharing options...
seti Posted December 12, 2014 Share Posted December 12, 2014 One of my favorite setups was 300B SET 8WPC with a George Wright Preamp and Belles. Quote Link to comment Share on other sites More sharing options...
kaiser SET say Posted December 12, 2014 Share Posted December 12, 2014 Here is a custom fastlaneaudio/ampsandsound 300b. Build using the classic method of turret boards this amp is built with the same skill and attention to detail that macintosh and Marantz use. SS rectification, incredible power supply with large 5H choke. Transformers are Transcendar with 200% duty cycle. Freq response is 12z to 28khz +/- 1db. input sensitivity is 1.2v and output is 8watts. The tubes are barely broken in and test new on my hickok tube tester. The 300b's are the amazing Sophia Electric mesh plate 300B globe tubes which are ~$350 a pair and a NOS mil spec tungsol 6SL7. The amp is direct heated triodes with zero feedback. This is the definition of SET/DHT amps. The amp has been fully bench tested and is without issue and can be auditioned on 103db efficient Klipsch La Scalas... its dead silent. $1100 Justin 323-868-9722 Beautiful amp Justin, the Sophia Mesh plates are stunning. Really like the tranny housings as well. Quote Link to comment Share on other sites More sharing options...
Schu Posted December 12, 2014 Share Posted December 12, 2014 Looks like an amazing deal to me... Quote Link to comment Share on other sites More sharing options...
fuzzydog Posted December 12, 2014 Share Posted December 12, 2014 Nicely done! I bet it sounds great! Quote Link to comment Share on other sites More sharing options...
jcmusic Posted December 12, 2014 Share Posted December 12, 2014 (edited) Nice amp! A few years back I had a Sophia Electric 300B it was their flagship amp at that time simply beautiful!!! I too used the mesh tubes loved the sound for about four years, then I heard the 45 type!!! Well I have had one of those ever since, the 300b is a great sounding amp except for me it was just a little too lush. Some folks like that though so to each his own, good luck with the sale Justin I am sure someone will love it!!! Edited December 12, 2014 by canyonman Quote Link to comment Share on other sites More sharing options...
justinsweber Posted December 12, 2014 Author Share Posted December 12, 2014 (edited) I did much of the case work and Dave did the wiring... Its a stunning amp. The Transformer covers really balance the chassis. I believe its 17x12x3. Outputs on the ends and power and choke on the inside positions. The Amp is has hum adjust pots, but is so quite that it seems un-needed. Edited December 12, 2014 by justinsweber Quote Link to comment Share on other sites More sharing options...
Fjd Posted December 13, 2014 Share Posted December 13, 2014 SS rectification, incredible power supply with large 5H choke. Transformers are Transcendar with 200% duty cycle. Freq response is 12z to 28khz +/- 1db. input sensitivity is 1.2v and output is 8watts. Justin, is this the amp that Dave had a thread somewhere on the forum where he did the point-to-point turret board of Parks 'Get*Set*Go' schematic with the modifications for the 300b tube instead of the 6B4G tube? If so, does the switching to the diode rectifiers and losing the voltage drop of the 6AX5GT rectifier give the additional output to 8 watts per channel? For some reason I keep thinking that with the Parks schematic you would have about 5 watts; however, that may be just with the resistor changes needed for the 300b tube and retaining the tube rectifier rather than the diodes. Quote Link to comment Share on other sites More sharing options...
NOSValves Posted December 13, 2014 Share Posted December 13, 2014 300b are capable of more power then 6b4g Quote Link to comment Share on other sites More sharing options...
Dr Morbius Posted December 13, 2014 Share Posted December 13, 2014 Man, those tubes look so big they actually look like light bulbs! 1 Quote Link to comment Share on other sites More sharing options...
The Dude Posted December 13, 2014 Share Posted December 13, 2014 Man, those tubes look so big they actually look like light bulbs! Yea kind of turns me on, like big ole horns. Quote Link to comment Share on other sites More sharing options...
justinsweber Posted December 13, 2014 Author Share Posted December 13, 2014 It is the one Dave showed in his build previously on here. Though based on the GetSetGo, I believe its more than just the removal of the rectifier. The Parks 6G4B is about 5watts in SS form. I was a bit unsure of the transformer covers when Dave told me about them, but when he showed me the finished product I was in love... Man they look great. Quote Link to comment Share on other sites More sharing options...
Fjd Posted December 13, 2014 Share Posted December 13, 2014 It is the one Dave showed in his build previously on here. Time sure flies, as I was thinking he built it this last spring; however, in looking at Dave's thread at the link below, it was April 2013. https://community.klipsch.com/index.php?/topic/143488-300b-amp-project/ Quote Link to comment Share on other sites More sharing options...
jcmusic Posted December 14, 2014 Share Posted December 14, 2014 Man, those tubes look so big they actually look like light bulbs! You want to see big tubes look at the EML 45's!!! Quote Link to comment Share on other sites More sharing options...
justinsweber Posted December 14, 2014 Author Share Posted December 14, 2014 SOLD SOLD SOLD SOLD Quote Link to comment Share on other sites More sharing options...
playntheblues Posted December 15, 2014 Share Posted December 15, 2014 Very nice work Justin~! Quote Link to comment Share on other sites More sharing options...
justinsweber Posted December 15, 2014 Author Share Posted December 15, 2014 It was nearly all daves work and vision. I do miss drilling chassis but I was too prone to messing them up. Quote Link to comment Share on other sites More sharing options...
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