solderdude
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Post by solderdude on Feb 19, 2017 12:56:37 GMT
Kameleon filter list updated with TH-X00 Mahogany.
Which version did you buy ?
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juke
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Post by juke on Feb 19, 2017 23:22:02 GMT
Kameleon filter list updated with TH-X00 Mahogany. Which version did you buy ? I got the Purpleheart again, must admit the cup colour was a major draw. Syd
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heater
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Post by heater on Feb 20, 2017 18:16:57 GMT
Saw a MD poll this morning and Purpleheart was winning and Ebony last. Asked readers to judge on sound not looks.
Larry
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juke
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Post by juke on Feb 21, 2017 13:56:50 GMT
I came across this on the Massdrop site, hope it's OK to paste it here but I was curious about one area, "...and where the Mahogany has a slight peak at ~600hz, the Purpleheart has a smoother climb from 500hz to 1000hz", surely that's not what the graphs above show?
"By Massdrop Sponsor
PH v M
All of these are subtle changes, driven by the community’s response to the original TH-X00. Sub-bass (~50hz) through bass (~250hz) is increased ~2 db while following the same curve as the original (peak is at 50hz). Lower midrange (~500hz-800hz) is decreased by ~5db, and where the Mahogany has a slight peak at ~600hz, the Purpleheart has a smoother climb from 500hz to 1000hz. Midrange proper ( ~1000hz-2000hz) is essentially the same as the Mahogany. Upper midrange (~2k-6k) is ~2db less throughout. Highs (~8k-10k) are slightly more emphasized. Peaks and valleys are positioned differently than on the Mahogany, magnitude of peaks and valleys is similar. Super Highs (~12k-20k) are more present. Where the Mahogany falls off at ~14k, the Purpleheart maintains presence throughout that range. This is something for the community to verify, but overall top-end extension should be improved. CSD Graphs of the TH-X00 Mahogany showed some resonance at 3k and 6k, these mostly eliminated with the Purpleheart.
Sub-bass (~50hz) through bass (~250hz) is increased ~2 db while following the same curve as the original (peak is at 50hz). Lower midrange (~500hz-800hz) is decreased by ~5db, and where the Mahogany has a slight peak at ~600hz, the Purpleheart has a smoother climb from 500hz to 1000hz."
Syd
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solderdude
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Post by solderdude on Feb 21, 2017 20:08:17 GMT
Well +2dB isn't really subtle. The plots show + 5dB Not subtle at all. Indeed around 700Hz the plots show a peak in the Mahogany and ebony version and a dip a 6dB difference, again not subtle. As if the 600Hz slider on an equalizer is pulled down 6 notches ! Strangely enough on my rig the Mahogany version does not show a +4dB peak but measures flat.. and sounds 'flat' as well. I certainly don't hear a +4dB peak around 700Hz. Above 6kHz they all measure quite similar. Can't say much about the other 2 versions but the Mahogany sounds as it measures on my rig. Warm/full and lacking some clarity (dip between 1kHz and 6kHz) with slightly peaky treble (peak around 11kHz) Extrapolating from this the PH could be viewed as a more bassy version of the Mahogany. So it could use some clarity, somewhat less thick bass (tightened). The treble peak may not be as audible as with the Mahogany as the elevated bass and lower mids will mask the treble somewhat. So it will have smooth and slightly subdued treble. Cymbals may not sound 'real'.
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juke
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Post by juke on Feb 22, 2017 14:16:12 GMT
Would the Mahogany filter help the PH?
Syd
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solderdude
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Post by solderdude on Feb 22, 2017 15:07:32 GMT
Yes, but it will still be bassy but have more clarity and better treble response.
I did design a filter for the PH but need to check it first before it is published. That filter will basically do the same as the Mahogany but with the bass reduced to more sensible levels.
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juke
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Post by juke on Feb 22, 2017 15:59:12 GMT
That's great Frans, thanks. It may be interesting if I make one of each.
I was looking at my Mk 1 blank boards and noticed they are sort of a 'mirror image' of the Mk 2. Could I use a Mk 1 board in the desktop?
I've read about the R1 resistors issue using Mk 2 boards in the Mk 1 but not sure the other way round.
Syd
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solderdude
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Post by solderdude on Feb 23, 2017 9:46:50 GMT
The mk1 filterboard (through hole components) can be used in mk2 Kameleon amplifiers but not in the in-line Kameleon.
The Mahogany filter can be made on the mk1 filterboard(through hole) but the PH filter can only be built on the mk2 filter boards(SMD)
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juke
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Post by juke on Feb 23, 2017 11:20:09 GMT
Thanks Frans.
Syd
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solderdude
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Post by solderdude on Mar 3, 2017 18:42:03 GMT
Finally had some time to correct the Farnell 10k resistor order code (also there in other modules) and added a filter for the PurpleHeart and the T50RPmk3.
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juke
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Post by juke on Mar 3, 2017 23:45:38 GMT
Finally had some time to correct the Farnell 10k resistor order code (also there in other modules) and added a filter for the PurpleHeart and the T50RPmk3. Great news Frans, thanks. I can't find it in the filter manual though?
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solderdude
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Post by solderdude on Mar 4, 2017 17:00:35 GMT
It's on page 22 in the latest manual (v 1.04) the version number is on the first page and in the document properties. On the second half of the page you will find the Alphadogs. On page 21 is the Mahogany filter.
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juke
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Post by juke on Mar 4, 2017 18:18:52 GMT
All I can find is V 1.03, I've tried a few times.
I went to the index page and the latest update is shown as 03-03 but brings down 1.03. Feb. 17
Tried going via some of the other links, same result.
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solderdude
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Post by solderdude on Mar 4, 2017 19:39:40 GMT
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