Finally put all together enough to ear it... Gosh, nice!
Now, I have some boxing problems, I have to strip case size at the minimum. May I bolt it on the hifi2000 casing floor? It's just a sheet of metal (painted btw). Will it be enough?
Now, I have some boxing problems, I have to strip case size at the minimum. May I bolt it on the hifi2000 casing floor? It's just a sheet of metal (painted btw). Will it be enough?
Its 3mm thick I think. Will be alright for conservative hot-rod. Don't forget the insulation pads for the MOSFETS.
Now your build has the standard ~10.000uF total per side of high ripple current capacitors?
If yes they will hold their own to much more for spec. Subjectively big transformer and more capacitance some may like or not, but technically the now components are very capable.
If yes they will hold their own to much more for spec. Subjectively big transformer and more capacitance some may like or not, but technically the now components are very capable.
Yes, it has 9400 uF per polarity.
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I measured THD+Noise of the DCB1 using audiodiffmaker. Here is how to do it with an ADC for recording:
Record Sample 1 direct from CD player.
Record Sample 2 from CD player via DCB1 at full volume.
Use audiodiffmaker to create a difference file, "Sample 1 - Sample 2".
Import the difference file into audacity and analyze spectrum.
The spectrum plot of the difference (THD and noise) was -84 dB or 0.0063% at full volume.
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I wonder if a larger power supply with greater voltage drop would have a measurable difference?
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I measured THD+Noise of the DCB1 using audiodiffmaker. Here is how to do it with an ADC for recording:
Record Sample 1 direct from CD player.
Record Sample 2 from CD player via DCB1 at full volume.
Use audiodiffmaker to create a difference file, "Sample 1 - Sample 2".
Import the difference file into audacity and analyze spectrum.
The spectrum plot of the difference (THD and noise) was -84 dB or 0.0063% at full volume.
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I wonder if a larger power supply with greater voltage drop would have a measurable difference?
In average music volume the THD is even lower (the B1's THD rises monotonically with level) and I don't expect substantial THD differentiation between capable and more capable supplies.
I suspected the same. This unit never ceases to amaze me. Vanishingly small distortion without feedback.
How can it get any better than that?
How can it get any better than that?
Just finished fine; sounds great!
High-output phono stage: Hypnotoad HTMCPS
Low-output phono stage: Hypnotoad AD797
Attenuator: Goldpoint Mini-V
Remote control module: Bent Audio Remote Volume System
Transformer / shield: Antek
40 mm billet AL knobs: eBay
12 VDC remote power supply: eBay
Input selector: eBay
Misc parts: Parts Express
Case: Homebrew (left-over 8/4ths walnut stock; perforated aluminum baking pan; aluminum stock from Lowe's)
Build thread here.
High-output phono stage: Hypnotoad HTMCPS
Low-output phono stage: Hypnotoad AD797
Attenuator: Goldpoint Mini-V
Remote control module: Bent Audio Remote Volume System
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Transformer / shield: Antek
40 mm billet AL knobs: eBay
12 VDC remote power supply: eBay
Input selector: eBay
Misc parts: Parts Express
Case: Homebrew (left-over 8/4ths walnut stock; perforated aluminum baking pan; aluminum stock from Lowe's)
Build thread here.
One of the most original looking cases ever posted here.
Yes; solid state on the woofers and tubes on the horns. If you insist! 😀
I made the stereo and LP cabinets, speaker stands and amp plinths out of walnut or (for the cabinets) walnut veneered plywood.
Made Some Walnut LP and Stereo Cabinets - AudioKarma.org Home Audio Stereo Discussion Forums
VTA Dynaco MK3s ... in Walnut - AudioKarma.org Home Audio Stereo Discussion Forums
The preamp is now where the Adcom was in the top right.
I made the stereo and LP cabinets, speaker stands and amp plinths out of walnut or (for the cabinets) walnut veneered plywood.
Made Some Walnut LP and Stereo Cabinets - AudioKarma.org Home Audio Stereo Discussion Forums
VTA Dynaco MK3s ... in Walnut - AudioKarma.org Home Audio Stereo Discussion Forums
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
The preamp is now where the Adcom was in the top right.
Yes; it seems more detailed with a more open sound stage and more distinct imaging. I'm really noticing on my favorite recordings a lot of detail and overdubbing that I had missed before, and it's also very smooth; no fatigue at high levels! I'm just delighted.
Congratulations, both on build and sonics. Not easy to integrate so many things in one box and have a good outcome. Big speakers need no noise but smooth detail, no harshness, else they bring them nuisances to stark relief. Enjoy.