| ThomasS |
Can the active pre run on +/- 13v? (SLA power my SI T-amp and it would be nice to do the same on the pre)
Can the gain be increased to ~6dB? (PLLXO causes some insertion loss in my bi-amp system....)
Thanks,
Thomas |
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| ThomasS |
What's the output impedance of this pre amp?
There is a 100k resistor between output and ground :confused:
is this correct?
Thomas |
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| ThomasS |
I could just build it and see...... BUT I would prefere some gain....
Thomas |
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| janneman |
The 100k doesn't harm but would do anything either i think.
13V supply should be OK with possible a little less output level - but still enough to wildly overdrive your GC!
This is a buffer (if I got the right diagram on the site) so no gain, I'm afraid. You really need 6dB gain? How about just turning up the vol control a bit further, or rather turning it less far down?
Jan Didden |
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| janneman |
| Correction: The 100k ensures the output floats to gnd if connected to a capacitor-coupled power amp input. |
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| Nuuk |
| quote: | | Correction: The 100k ensures the output floats to gnd if connected to a capacitor-coupled power amp input. |
Beat me to it! ;)
ThomasS, you may find that with the buffer in between the volume control and class-T amp that you don't actually need the extra gain! :att'n: |
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| janneman |
| quote: | Originally posted by Nuuk
Beat me to it! ;)
[snip] |
Wow! That was close ;) , almost got caught with a mistake.:D
Jan Didden |
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| ThomasS |
| The passive line level x-over causes quite a bit of attenuation but I'll give it a try :) |
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| Nuuk |
| quote: | | The passive line level x-over causes quite a bit of attenuation but I'll give it a try |
Then go active! It's not really difficult. If you want to keep with the Les Sage buffer concept, then try these .
Hardly any more work than the buffers and you have your crossover filters as well! ;)
Jan - yes, lucky to corrected that one. I've seen people shot on this forum for lesser mistakes! :D |
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| janneman |
| quote: | Originally posted by ThomasS
The passive line level x-over causes quite a bit of attenuation but I'll give it a try :) |
Aha! I was wondering what a Phase-Locked Loop Xtal Oscillator had to do with it....
Jan Didden |
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