doctorcilantro

The inductance of my current cart. used in the described setup is 2mH, and the resistance is noted at 2ohms.

I'm looking at some Soundsmith cartridges which come in a 100pf or 400pf version. My buddy who helped me with my custom XLR tonearm setup stated that the capacitance wouldn't matter due to a voltage divider situation. Any thoughts? I'm looking at running the new moving iron cart. at 35K and trying to figure out which version of the cart. to get. I'm pretty much a Luddite with regard to capacitance; my tonearm wiring is about 34awg solid core silver and it's about 2feet and wired via XLR to connect a mic preamp at 35K.

I'm looking at some Soundsmith cartridges which come in a 100pf or 400pf version. My buddy who helped me with my custom XLR tonearm setup stated that the capacitance wouldn't matter due to a voltage divider situation. Any thoughts? I'm looking at running the new moving iron cart. at 35K and trying to figure out which version of the cart. to get. I'm pretty much a Luddite with regard to capacitance; my tonearm wiring is about 34awg solid core silver and it's about 2feet and wired via XLR to connect to the mic preamp at 35K.

KLIPSCH NEEDS TO MAKE THIS FORUM CHROME FRIENDLY! Found it: http://pax-comm.com/pa01019.htm I have seen some nice etched date code Mitcham and Blackburn plant Mullards simply silk-screened with IEC.

I used the AW400 (pair) and LOVED them, but we just had to move without warning to an apartment. I had a 40w gainclone on them and it was incredible. I used to love sitting out by the fire with my son and we lately had been listening to Desifinado.I was going to get the sub but never did and these dig well actually; I can't imagine how amazing this setup would sound with the sub, especially for an outdoor rig.

Wow. THANK YOU.

Sounds great. What tubes did he almost throw at you? I'll send you a PM about the Genalex re-issues. If I can find some 6U8 that test okay you can have them. DC

I had to search high and low for a small amp with enough juice for my 94db/w speakers so I settled on an Eastern Electric Minimax with about 8-10 watts. Very cool little amp that I am reluctantly trying to find I home for. You could also look at the Mini-Torii which is my new one.

Good news. There are two (one unpublished) VST plug-ins for digital RIAA and the math is excellent. http://www.kvraudio.com/get/3550.html RIAA Filter software specs (of unpublished - but he says the math of the one above is comparable ): 44.1kHz Maximum error from 0.00 Hz to 20000.00 Hz = ~0.224dB Maximum phase error from 0.00 Hz to 20000.00 Hz = ~+/- 30 degrees where the "phase error" is computed after a constant delay is added or subtracted to make the phase error equiripple 48kHz Max error from 0.00 Hz to 20000.00 Hz = ~0.14dB Max phase error from 0.00 Hz to 20000.00 Hz = ~+/- 24 degrees 88.2kHz Maximum error from 0.00 Hz to 20000.00 Hz = ~0.0082dB Maximum phase error from 0.00 Hz to 20000.00 Hz = ~+/- 3 degrees 96kHz Maximum error from 0.00 Hz to 20000.00 Hz = ~0.0057dB Maximum phase error from 0.00 Hz to 20000.00 Hz = ~+/- 2.4 degrees

I think the MAX implementation may be better but I have used the VST plugin. I need to get in touch with the designer and ask him directly about the VST vs. MAX. Here's some info on the MAX version: "As seen in picture, I have multiplied the gain coefficients by 10. This gains the filter output signal over +30dB. Harmonic distortion stays still under -100dB but, if you feel it's gained too much then, just change those three first values on each RIAA filter. By dividing values by 10 you'll get the original level (~0dB @ 1kHz (as seen in the background image of tis filter software)). Do not touch into those two last filter coefficients !! Quote: RIAA Filter software specs: 44.1kHz Maximum error from 0.00 Hz to 20000.00 Hz = ~0.224dB Maximum phase error from 0.00 Hz to 20000.00 Hz = ~+/- 30 degrees where the "phase error" is computed after a constant delay is added or subtracted to make the phase error equiripple 48kHz Max error from 0.00 Hz to 20000.00 Hz = ~0.14dB Max phase error from 0.00 Hz to 20000.00 Hz = ~+/- 24 degrees 88.2kHz Maximum error from 0.00 Hz to 20000.00 Hz = ~0.0082dB Maximum phase error from 0.00 Hz to 20000.00 Hz = ~+/- 3 degrees 96kHz Maximum error from 0.00 Hz to 20000.00 Hz = ~0.0057dB Maximum phase error from 0.00 Hz to 20000.00 Hz = ~+/- 2.4 degrees" http://img135.imageshack.us/img135/9095/riaafilterscemazi2.jpg DC

Thanks Larry. I do want to try som LOMC if it's even theoretically possibly they will sound good. Luckily, I do have a group of audiophiles in Tampa (Tampa BayListening Society) I could ping for some carts to try. The way RIAA is implmented is in real-time with n EQ implemeneted in a VST plugin named IIEQ: IIEQ is a 10 band parametric track EQ especially designed for an optimal balance of CPU usage and sonic control. Main features: Minimum phase IIR EQ. Low shelf with gain and and cutoff frequency, high shelf with gain and cutoff frequency plus 8 peaking filters with gain, center frequencies and Q. The gain can be ± 20 dB. Overall output level control with VU meter to avoid overshoots. The person who implemented it did the math and compared it to the results Robert Orban is getting with PureVinyl. I will post the specs but I have an improved version which I run at 96kHz. The 44kHz version pretty good: .05db from 20hz-18kHz, however it has -.2db to -1.3db from 18-20kHz. DC

Only Ayre, Dcs, and Wavelength utilize async usb which I belive Rankin (Wavelength) developed first, long ago actually. If you read up on it, it is a smart way to establish sample rate sync. The Brick may see an upgrade after CES apparentl; maybe a 24/96 module. Currently, the more affordable Proton can do 24/96 via async USB. EAC can still introduce errors even when secure rip; AccurateRip may be something to look into, I never have. there a few mind numbing threads on Hydrogen Audio; I am not suggecting anything better. EAC or J. River in secure mode are fine. There was a bit of confusion earlier in the thread due to the application of the term lossless in the context of pushing audio output via ASIO, WINASAPI, etc. Starting with lossless sources like .ape, .flac, .alac means lossless as opposed to lossy. Discussing bit-perfect output vs non-bit perfect output is another thing. If you use J. River DSP to apply ReplayGain for example, while no longer bit-perfect, the 32bit internal audio engine is not going to make this non-bit-perfect output....crap, to be blunt. There are plenty of bits to work with and reasonable digital volume control is even feasible, although I myself even avoid this. If you want to pass bit-peffect DTS over S/PDIF there is a test on the J. River forums but I can't find it right now. DC

Hi all, I'm trying to calculate, based on the following information, the load on my cart in my setup. I have wired my tonearm in a balanced configuration as described on PureVinyl site, AudioKarma, etc. and I utilize the following. Linear Gain AEA TRP ribbon pre: 36K input impedance Grado Reference Statement (.5mv): Inductance: 2mH Resistance: 2 Input Load: 47K Here is an archived AA post in which the poster was using the higher output cart. I'm not sure about the capactance of my cable; it is very short maybe 1ft and, as mentioned, terminates with XLR (3rd pin no ground or connection to shield - although I have tried that). I get about -70db noise floor with about 70-75db of linear gain applied - this is prior of course to RIAA EQ which is done via a VST plugin in Samplitude. The AEA TRP ribbon pre is listed at 18K input impedance but I have verified it is actually 36K from the manufacturer. I have had the system offline for some time due to a move, but it sound really good before; right now I am just curious as to the resulting electrical specs.. I'm also planning to look into how the Grado low-output moving iron specs differ from those of a true MC because lately I have been reading about (here) an argument about using MC carts at 47K which would open up the possibility of trying some other carts with this mic preamp. "GRADO Inductance: 45mH Resistance: 475 Input Load: 47K I cannot reproduce here the VISUAL results of the program used to render the following calculation, but here are the results. They will, as have other real world tests, throw into question the rationale that drives manufacturers to provide a standard 47k load for MM cartridges, as well as the recommendation that users so load ALL MM cartridges (The Shure V15VxMR, for example, would not behave anything like we see here; their engineers seem to have designed it to work into a 47k load). Here are the results and something I think you might find worthwhile and relatively inexpensive to try out: GRADO (45mH / 475d) With 200pF cable & stray capacitance and 47K load resistor, output starts to rise at ~10KHz to +1dB at 20KHz and a +9dB peak at 50KHz; With 300pF cable & stray capacitance and 47K load resistor it gets worse. Output now starts to rise at ~10KHz to +2dB at 20KHz and a +10dB peak at 42KHz; With 200pF cable & stray capacitance and 10K load resistor things look much better. Output is pretty flat to 20KHz and rolls off to –3dB at ~45KHz; With 300pF cable & stray capacitance and 10K load resistor things look better yet. Output is ruler flat to 20KHz and rolls off to –3dB at ~46KHz. In this scenario, the added capacitance actually helps. Whether or not your ears will hear the peak (it is ultrasonic & outside the audible range), it is probably not good anyway. You WILL hear a difference, and I think one which you will find favorable, at least based on what information we presently have about your system and what you are now hearing as "wrong." If you place a 13K resistor across the phono input plug, it will be in parallel with the existing 47K which is then 10K. It will let you experiment without modifying the preamp." from http://db.audioasylum.com/cgi/m.mpl?forum=vinyl&n=196869&highlight=grado+impedance+47k&r=&session=

I thought the substantive difference in many home version vs. ultimate/pro was limited home networking; maybe this changed with Vista though. I always thought that was pretty rude of MS to label an OS "home" and then exclude home networking from it (i.e. XP Home) DC

AMEN!

Klipsch told me they were out of boxes as the RF7 have been out of production for some time. DC

I am planning on shipping my RF7s from Florida to Colorado, and I have been looking into various options for a while. I thought I would canvas the group for ideas as I do not have the original boxes. UPS would have to use two boxes to make one which I feel is questionable. Uhaul wardrobe boxes? thanks DC

Think you posted in the wrong thread. Try here. DC

My experience with a Bix and MG-1 was that the moutning template for MG1 offerredquite a bit of wiggle room. Maybe because the other parts on the tonearm could compensate. 1/10 of a mm doesn't sound right at all to me. DC

I edited the PM1.6 plugin for J. River for 1920x1080 if anyone needs it.there are someother skins for TrackInfo that just have big letters but I prefer to have lyrics, band members, etc This is a screenshot from a 42" so it's plenty big. All links open "lightroom" style so you never really open an external browser. It should work on MC12, 13, or 14. Gyration remote is top notch, cheaper than the Logitech in-air, but recenlty J. River introduced something that has caused some issues when it is used in conjunction with Intelliremote. I'm working on it, still really nice remote that can provie keyboard too via the same usb dongle which is RF. If you use WMP you can use the new version of the Gyration w/ LCD to view/choose playlists etc. Just sold my Origenae Uneex x11, man that was a nice setup, but I built a new HTPC/server out of a Psile case and mini-ITX board. Windows 7 x64 running rather smoothly; much better than Vista imo. I've never had a problem with EMI/RFI jacking up onboard sound, but maybe the PSU could introduce some noise but I use an external DAC anyway. I almost bought a Wavelength Proton but went with a Peachtree Nova (fed by 1616M from PC). DC

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I was digging up the specs on the RF-7 for a possible buyer and I see they are now listed at 102db/watt. http://www.klipsch.com/na-en/products/rf-7-specifications/ I am 95% sure they used to be stated as 98/watt. Ideas? Comments? DC

I was going to suggest something from Decware but you'd get max of two inputs. I have an EL-84 tube integrated I'm selling for 575 shipped with (4) sets of tubes. If your interested check the garage sale forum...it's a sweet amp, I just don't have room. DC

just got a tip on this RoomWizard app: http://www.hometheatershack.com/forums/rew-forum/11707-room-eq-wizard-rew-information-index-links-guides-articles-stickies-please-read.html#post103867