ptmconsulting
Responses from ptmconsulting
| Subsonic Rumble Solutions Here's an update. I bumped into Michael fremer. he suggested adding some Bluetac or Moretite to the headshell, effectively increasin the mass of the tonearm and changing the compliance. unfortunately this didn't change anything.another suggestion ... | |
| Crossover upgrade capacitor question I suggest bypass on the tweeter from practical experience. I tried them on my mid/bass crossover caps and found that there was a pronounced forwardness and over prominence on the upper midrange that threw the whole speaker out of balance. Now, YMM... | |
| Crossover upgrade capacitor question I would also suggest bypassing the caps in the tweeter circuit, each with a smaller .1uF cap. Don't do this in the mid or woofer sections though, just the tweeter.Enjoy,Bob | |
| $1k preamp for McCormack DNA-125 recommendations? I would highly recommend looking for something tubed over SS. Not that you couldn't find a nice SS to mate with it, just that these amps work quite well with tubes.You could also look into passive pre's, since the McCormack's are designed to work ... | |
| VPI clamping system design flaw? Here's an easier method. Try tapping the back or your fingernail on the edge of the record. At some point you will clearly hear that the record is completely "seated". too little or too much and you will hear the difference.Enjoy,Bob | |
| Who was your first Was into prog-rock, back in the 70's, so my first expansion into "jazz" was progressive. perhaps Return to Forever or one of those prog-jazz bands of the time. I know I litened to lots of things in that vein as I entered college and was exposed to... | |
| Antiskating .... The last analog secret There was a bit of discussion not long ago about how some arms use a progressive anti-skating mechanism. The theory was that you need more anti-skating as you get closer to the spindle, where the circumference is smaller on the record and there's ... | |
| 10 Levels of Turntable Mastery OK, lets see if I can pick up where Atmasphere left off:TML7: May not be able to fully set up a Linn, or address the vageries of voltmeter based diagnostics on azimuth adjustments, but certainly has real-world experience with multiple tables/arms/... | |
| REL subwoofer cable I know it's against audiophile etiquette, but I just coiled the extra length of mine. Coiling generally negatively affects high frequencies, but this should not be an issue for a subwoofer feed.Enjoy,Bob | |
| can a tube-o-phile be happy with ss? Tweaking? - that's why I have vinyl!!!Some SS amps provide the best of both worlds with a good tube preamp in front of them (aka McCormack's with the Rev A or better mods, but there are certainly others also).Enjoy,Bob | |
| Top Jazz Albums of 2008 Just got the new Roy Hargrove - Earfood disk a couple of days ago. This one should be on anyone's list of top disks for the year.Bob | |
| Subsonic Rumble Solutions Simpler is usually better, IMO. I'm even bothered by the idea that I would need a step up device if I were to get a LOMC down the road. Somehow I wonder if any improvement over the 20X-H (a very good cartridge in its own right) would be lessened b... | |
| Subsonic Rumble Solutions I have a Dynavector 20X-H cartridge on a Moerch DP6 red dot tonearm. Supposedly the correct tonearm for this cartridge (gotta love a Moerch, since you can buy and change armwands to match the compliance of the cartridge).I was listening yesterday ... | |
| Subsonic Rumble Solutions There's been a lot of talk about rumble and subsonics. How does one differ from the other?Another question about these little RCA filters - anyone guess what's inside them? They are sooo small there can't be much. The rest of the signal runs throu... | |
| Subsonic Rumble Solutions Hey, those little RCA "Sub Sonic Filter pairs" looks cool, and may well be worth trying out for only $29. There are 2 values: 20Hz and 30Hz. Both have a 12db slope to them - not very steep. So if I was looking for 3db down at 17Hz then the best ch... |