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 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

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It is currently 26 Jan 2021, 22:59

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PostPosted: 13 Jan 2018, 00:37 
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Joined: 06 Jun 2008, 18:23
Posts: 5318
Location: Australia
Gio wrote:
In the past few days I went back to the Classic 4+ OB speakers as shown 4 posts back. Had a friend over yesterday who is well read on OB theory and he suggested pulling the speaker further away from the wall and also re-positioning the listening chair further back. So I let him take over the setup and using a dayton omnimic the crossover was dialed in at a little below 300 Hz with 12dB slopes. The speakers are now 6 feet (1.8 m) from the wall and this results in a large improvement. The midrange response benefited the most from the positional improvements and also there were improvements to the top end which was more extended and airy. The XO was dialed in for a flat response but I probably will dial the bass up about 2dB as I prefer the bass on the warm side.

Good work.

Projects: "Sortilege" - 180W Tripath Class D Mundorf upgrade amp | “Mantra” - tube MM phono preamp | "Carbon” - MM phono preamp | 180W RAW Class D amp |

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