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In the Forum: Melquiades Amplifier
In the Thread: 6 Channel Version of Super Melquiades
Post Subject: There is nothing extraordinary so far.Posted by Romy the Cat on: 9/13/2007
 Paul S wrote: |
| Romy, on Fundamentals channel did you leave the 20uF cap at speaker level or did you re-configure that band pass at line level? |
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Nope, it is hoe it depicted the 20uF cap at speaker level. I see no problems with it is very narrow bandpass that cares no HF. However the interdiction of a high-pass filter at line level, right next to the low pass will create problems. The OPT at that channel is 60H and can care a full range signal.
| Paul S wrote: |
| Are the RC feeds you mention pre-driver or interstage for A, B and C? |
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The C channel has no filters and works full range.
| Paul S wrote: |
| Is everything still 1st order? |
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as you can see.
| Paul S wrote: |
| Can you say already if you have enough drive with 5H on the MF? |
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This channel is filtered with 1000mH indictor against 20K resistor, which makes it around 3200kHz. The 5H OPT is set to have the channel to roll of at 250Hz. So, I see absolutely no problem in there with limited inductance. Furthermore, I DID drive the MF without any fitters at all and it was also perfectly fine sonically. Driving frequency down the output reformer at MF channel begun suture around 250Hz but it is at full power – with 3.2 of input signal. What I play music VERY loud with my preamp maxed out then I develops on driver grid no more then .285V RMS. So, I presume that I juts do not drive enough voltage through the channel. Still, I prefer to roll off the input if it does not affect sound. It looks like the RL filter works very nice….
| Paul S wrote: |
| No need to adjust - bias on A, B, C? |
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Nope, in the two stages channels the driver cares 17mA that is very far from critical 35-40…
| Paul S wrote: |
| I imagine "clarity" is astounding. |
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Nothing extraordinary. There are certain areas where I can report some improvement but nothing revolutionary. It will take time for me to learns how to capitalize on the advancements that I abstained now and how to convert it into more interesting sound….
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