i_djoel2000
500+ Head-Fier
- Joined
- Dec 26, 2009
- Posts
- 813
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- 11
I'm willing to bet that more Head-Fiers were conceived as a result of cheap wine than anything from Donald Trump's cellar. I spent the first few years of my life convinced that 'Jack Daniels' was a family member - then I learnt to read. Its all been downhill from there.
How can I get the full energizer 15V pack without shopping pieces here and there? I don't mind paying a small premium for an all-set-up Energizer 15V mod pack.
I can't vouch for the energizer pack but I can tell you there is a small improvement when using a regulated 15v linear PSU. Not massive but I am starting to notice a difference now my ears have burned in.
I bought the PSU in readiness for the arrival of my 2Stepdance and I'm glad I didn't shell out for the XP8000 also because the difference to my ears is marginal and most of my portable listening is on the go (walking etc..) so not critical listening. The difference for the original Stepdance may be bigger and it certainly seems that way judging by the comments here but for me it's a PP3 in the amp and a spare in my bag when I'm out and then 15v linear PSU when sat at home.
My 2Stepdance is maturing into the most beautiful sounding amp, I listened (critically) at length last night with my ES5's > CLAS (all lossless) and it was the best listening experience I've had for months. Everything was just perfect, perfect, perfect. I've never been so tuned in and in touch with music via that rig as I am since getting the 2Stepdance. Money very well spent
Will be even better this time next week Spud as its still burning in, I felt quite a large improvement in depth and detail with the Mascot though especially with the Denons.
Do you have the gain setting on low or high ?, the mascot is a snip though, very cheap,improves sound quality and saves on battery charging.
Back to the energiser pack, quite a few people have the energiser set up and are very happy with the increase in sound quality, I,m sure they will fill in the blanks for you.
I don't make the distinction between portable & transportable. It all becomes portable to me. I'm not much of a casual listener. I'll take my things w/ me for a walk only if I'm going to stop somewhere & spend some time tuning out my surrounding & concentrate on my music.
...Critical listening ... hmm.. I like to think of it as critical enjoyment.
Googlei, did GG succeed in selling the Energizer system that was FS?
My apologies to all for interupting the discussion flow. I suppose I can be as "thin skinned" as anyone at times . One more comment though & then "back to our regularly scheduled programming"(watched way too much tv as a kid). Learning to read does'nt lead us to our downfall , believeing most of what we read is accurate is what does that. I'm a cynic, but a "subjective cynic" (I hear most of you groaning, so back to the 2Stepdance discussion) . If you are using the Energizer XP8000 w/ this amp is there an appreciable difference between running the amp at 12v rather than the full regulated 15v. One more; Does the Energizer XP8000 come w/ a cable that will allow you to run the 2Stepdance at a full 'regulated' 12v ?
For example, you might assume that if you doubled the supply voltage, you would get double the output voltage to the headphones (and thus double the Watts for any given current that's being supplied at any particular instant in time). But it's actually better than double!
Let's go really deep... I created an X-Y scatter chart in Microsoft Excel, plotting the three data points provided in Figure 4 for Supply Voltage (Vs) vs. Maximum Output Voltage (Vpp), then applied a polynomial trendline to the resulting chart and queried the equation for that trendline. Here it is:
Max. Output Voltage (Vpp) = 0.1141*x^2 - 0.2816*x + 7.0561
where x is the Supply Voltage (Vs) made available to the OPA1611 (and "x^2" means "x squared," for those unfamiliar with this syntax)
Here are the known data points taken from Figure 4 of the OPA1611 datasheet:
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Actual Vs (supply) Vpp (output) 2.25 7.00 5.00 8.50 15.00 28.50
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Here are the same data points with some additonal data points that were calculated using the above trendline equation, and a third column, that shows the % increase in output voltage enjoyed vs. an 8.4-Volt supply.
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Estimated % Vpp Improvement Vs (supply) Vpp (output) Over 8.4V 2.25 7.00 n/a 3.00 7.24 n/a 4.00 7.76 n/a 5.00 8.50 n/a 6.00 9.47 n/a 7.00 10.68 n/a 8.00 12.11 n/a 8.40 12.74 n/a 9.00 13.76 8.0 10.00 15.65 22.8 11.00 17.76 39.4 12.00 20.11 57.8 12.60 21.62 69.7 13.00 22.68 78.0 13.80 24.90 95.4 14.00 25.48 100.0 15.00 28.50 123.7
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In English, almost...
A 9.0-Volt battery (or PSU) will yield an 8.0% increase in Maximum Output Voltage (Vpp) to the headphones, relative to an 8.4-Volt LiPo rechargeable battery.
A 12.0-Volt battery (or PSU) will yield a 57.8% increase in Maximum Output Voltage (Vpp) to the headphones, relative to an 8.4-Volt LiPo rechargeable battery.
A 12.6-Volt battery (or PSU) will yield a 69.7% increase in Maximum Output Voltage (Vpp) to the headphones, relative to an 8.4-Volt LiPo rechargeable battery.
A 13.8-Volt battery (or PSU) will yield a 95.4% increase in Maximum Output Voltage (Vpp) to the headphones, relative to an 8.4-Volt LiPo rechargeable battery.
A 15.0-Volt battery (or PSU) will yield a 123.7% increase in Maximum Output Voltage (Vpp) to the headphones, relative to an 8.4-Volt LiPo rechargeable battery.
So... you can more than double the output voltage to your headphones (and thus, the Watts) by using a 15-Volt supply instead of an 8.4-Volt supply!
And a 15-Volt supply actually increases the output voltage (and Watts) by 41.8% over a 12-Volt power supply (even though the supply voltage has only increased by 25%, from 12 to 15)!