Saturday, December 22, 2007

Touching

Below is a clip of Robert Plant paying tribute to Jimmy Page. Here I am completely ready to write Robert off as a completely selfish, pompous ass and then he does something like this. It chocked me up a bit.





An unexpected twist

For those of you who haven't heard Robert Plant (of Led Zeppelin fame) and Alison Krauss (a famous blue grass singer) have done an album together. Robert's motto has always been, "ever onward" which has earned him my respect. After Zeppelin he could have easily cashed in on the success by sticking with what he knew, but he decided to take risks. Some albums have been better than others but none of them have sounded the same.











Monday, December 03, 2007

Getting music OFF an iPod

On of the major problems of using Apple lossless files or WAVE files is their substantially larger size compared to MP3 or smaller AAC files. While encoding music to an iPod it may be common to run out of space on the internal hard drive of a the computer. Sometimes buying a bigger hard drive isn’t possible. When this occurs one option would be to change iTunes preferences so that music could be deleted off of the computer’s hard drive without being removed from the iPod. This would be a fine solution for music that the user would never want to remove from the iPod. However, if the user ever needs these music files again having to re-encode them every time they are needed would be a painful process. Apple could easily allow music to be moved back from the iPod to iTunes. This would naturally make record company executives concerned with music piracy less interested in licensing their content to the iTunes store. Therefore Apple has been forced to disabled this ability. There are a number of third party products that will allow the user to copy files from their iPods back into iTunes. EphPod is one such product, and it happens to be free.

Monday, November 19, 2007

DIY music server

Recently I've been thinking a lot about building my own music server. With my recent purchase of a Hitachi H31000U 1 TB hard drive for the bargain price of $199 , I'm one step closer. This weekend I tried the PS Audio Digital Link III DAC which has a USB digital input. The PS Audio offers the ability to upsample the digital data to 96kHz or 192kHz. When upsampling the USB input to 192 kHz every couple of minutes there was a strange occurrence. There was a temporary drop in volume and a very slight interruption of the music, which lasted fractions of a second. Switching the unit to 96kHz solved this issue but also didn't offer quite the same sound quality.

A shootout between the PS audio and my current DAC, the Theta DSP Pro Basic III ended with the Theta coming out on top. So now the HagUsb from Hagerman Tehnology looks will be how I get my current DAC digital information from my future server project. At between $119 to $139 depending on whether one chooses the SPIDF or the AES/EBU, it seems like a bargain. Add to the affordable price a 30 trial period is it seems like a great opportunity. Of course the ideal solution would be a sound card that would have a digital output, however nearly all of those are toslink which is unacceptable for high end applications.

My current vision for the finished music server would be using a Windows XP based PC using iTunes playing WAV files. Apple lossless probably won't be used because even though the files are smaller and there is a mountain of evidence that they have the exact same data as a WAV file after being uncompressed it is a proprietary. If I change to other programs or buy a server a couple of years from now I don't want to have to re burn my music collection. Foobar2000 as an organizational interface also seems popular some more research into that might be warranted. Many use Exact Audio Copy to import music so some reading on that is also probably in order.
Getting better sound from a computer running Windows XP using iTunes is easier than you think. The following changes in total caused a profound increase in sound quality of the 1/8th inch analog out jack of my lap top. Windows XP Setting changes:

After right clicking on the volume control in the tool bar make sure that the “wave” volume control is at maximum and that the balance is in the middle. Both setting are implemented in the digital domain degrade the sound if used. Volume is reduced by reducing the resolution. 1bit of resolution is lost for every 6db of attenuation applied with a digital volume control. Also make sure that you press the advanced button and un click the “1 mic boost” setting. It raised the noise floor dramatically. Going into the “Sound Effect Manage” via the control pannel and making sure that there isn’t any EQ being done there is also advisable. On the “S/PDIF-Out” tab change the sampling rate from 48KHz to 44.1KHz. The bit conversion done by this setting when it is at the 48KHz setting destroys the sense of space as well as reducing tonality in the bass and destroying micro dynamics.

To stop windows sounds from interrupting the music go to the control panel select “Sound and Audio Devices” then to the “Sounds” tab. Under “Sound schemes select “No Sounds” and press the “Apply” and “Ok” buttons.

Changes in iTunes:

If iTunes is the player that will be used to interface with the music library make sure to turn the “Sound Enhancer” and “Sound Check” features off. “Sound Enhancer” boosts the high frequencies and also exaggerates left/right separation. Thus if we want a true representation of the audio this box should be unchecked. The “Sound Enhancer” does nothing more than add dynamic compression in an attempt to reduce the volume difference between songs when in random mode. It goes without saying that compressing dynamics changes the sound and is therefore inherently less accurate, hence undesirable. To turn these features off go to the “Edit” tab, select “Preferences”, then the “Playback tab and make sure that both the “Sound Enhancer” and “Sound Check” boxes are not checked. Also make sure that the volume on iTunes is set to it’s maximum setting because again this is another digital volume control that reduces volume by reducing resolution.

Thursday, November 08, 2007

Treating music with repect



The debate of digital vs. analog still rages on. I’m pretty much neutral. Either can be very, very good if done well, though they rarely are even done adequately. Instead of worrying about whether something is digital or analog let’s start demanding better quality of both. I’ve been fortunate enough to hear direct dubs to CD off of analog master tapes and they kill what is available to us on commercial CD’s.

I believe that one of the most damaging changes to music that is perpetrated by the record industry is dynamic compression. Dynamic compression is the reduction of the volume difference between the loudest and the softest sounds on a recording. Record companies feel that an album or song that is consistently louder will “punch” through other songs on the radio, thus increasing sales. However, other record companies are doing the same, thus it has become an arms race of sorts. The losers of this arms race aren’t the record companies but us, the music buying public. We are forced to suffer music that is uninteresting and uninvolving to listen to, a relentless assault on our senses. Removing dynamics can destroy the nuances is the tone or volume of a singer’s performance, taking away one of the tools in their arsenal to convey emotion to the listener. This removal of nuance also affects every other musical instrument. For the most part Classical and Jazz haven’t befallen this same fate as they don’t rely on air play for sales.

However, we the consumer are not blameless in all of this. Not only do we buy these flawed recordings, many of us do further damage by knowingly or unknowingly digitally compressing the music when we add them to our portable music players. This compression is a different, but far more insidious manipulation. Instead of reducing detail it is obliterated. Information that is judged to be “inaudible” or “unimportant” is simply disguarded in an effort to save space. In effect, many are saying that they are will to sacrifice quality for an increase in quantity.

Unfortunately, Apple is contributing to this wholesale reduction in quality. The iPod isn’t the problem, it’s a tool that can either be used or misused. However the iTunes store sells music at one of the lowest bit rates possible, setting the bar disappointingly low. The iTunes software is also complicit in the affront to music lovers. Out of the box the setting to the software is optimized to maximize storage space, effectively minimizing sound quality. Changing these settings is fairly straight forward. Go to the “Edit” pull down menu, then select “Preferences” from there go to “Advanced” tab and select the “Importing” tab and select either the “Apple Lossless encoder” or “Wav.” Wav is an exact bit for bit copy of the CD. To reduce the space of the files but without losing sound quality select the “Apple Lossless encoder.” It is purported to reduce the file size by half without a loss in sound quality. In practice the new file is slightly larger than half, but tests have shown that when uncompressed for playback it is in fact bit perfect. The only down side of apple lossless files is that they can only be played by iTunes and iPods.

Thursday, May 31, 2007

To the Extreme

Many audiophiles lovingly tweak their prized audio systems. To the layman many of these adjustments may seem a bit extreme. I'm pretty open minded when it comes to trying the newest hot tweak. But the owner of this system was so completely out of tweaking ideas he took a decidedly spiritual turn. Note the Buddha between the speakers.

Hey, whatever works.

Saturday, April 21, 2007

One of the founding fathers. . .

In the clip below Noel Lee of Monster Cable speaks about the beginning of a whole new product category. Along with Bill Lowe of Audioquest they started a revolution.

Monday, February 12, 2007

. . . and so it begins


My recently acquired turntable is home. The turntable pictured above is not mine, but another Thorens TD124 II with an SME 3009 tonearm. I have cleaned the ‘table up a bit. Right now the motor isn't running but there is some vibrations, hopefully it just needs cleaned and lubed. The tonearm is in a fairly dilapidated state. Having it restored may prove a long and costly endeavor. Parts availability for the turntable shouldn't be a problem, but finding someone with the expertise might prove difficult. The tonearm is the opposite story. Someone with the expertise is readily available within my circle of connections, but parts may be a problem. I'm hoping for the restoration project to come in under $500, I've set a ceiling of $700.

The Thorens TD124 has a number of features that make it unique. In additon to offering the common speeds of 33 1/3 and 45 RPM speeds. It also offers is the fairly obscure 78 RPM speed, then something that almost no turntable offers 16 RPM speed. The last speed was used for sales training discs, as well as radio show transcription discs. These adjustments are made using the switch at the bottom left of the unit. On top of the switch is a knob that can be used to fine tune the speed for those with perfect pitch. A built in strobe disc (located under the window in the front middle of the table) assists when tweaking the speed.

Leveling this or any other turntable is of the up most importance for best performance. To assist the user in this task the Thorens offers a built in bubble level (located bottom right) and three threaded posts (one can be seen under the level).

There are two other small, but thoughtful touches on this classic. The first it the lever located on the left of the platter which allow the platter to be raised so the motor does not need to be turned off to switch records. This was done to reduce wear on the motor. The second small detail is the built in 45 RPM adapter built into the center of the platter. When not in use it is flat with the rest of the platter. When needed a simple clockwise twist raises it, when it’s no longer needed a counter clockwise twist lowers it again. No chance of losing this baby!

Monday, January 29, 2007

Why buy the cow when you can get the milk for free!



This is a Thorens Reference turntable, which went into production in 1979. The Reference tipped the scales at roughly 180 lbs. It's hard to believe that they were building turntables like this nearly 30 years ago!

Recently I came into a vintage turntable and tonearm that will need some restoration. Not the Thorens Reference pictured above, but something really special none the less. So the search for free resources on the internet has begun. The Analog Dept. and Vnyl Engine both have lots of free owners manuals and other information on turntables and tonearms from years gone by. Most of the restoration work will be done by other because of the delicacy of the tasks and the knowledge necessary. I will try to document the process with photos as it progresses.

Wednesday, January 17, 2007

I do believe a little housekeeping is in order.

Lately my system has started to sound a bit dull on the top end, dynamics had become a bit lacking, a bit slow, and the bass a bit tubby. I was having to turn the system up louder than usual to get it to spring to life. This is particularly odd because one of the strengths of my system is that it usually performs equally well regardless of volume. After trying a couple of other things to clean up the sound of the system it dawned on me that the Martin Logan CLS speakers hadn't been vacuumed in months. The head of Martin Logan's service department recommends that the electrostatic panels of ALL of their models be vacuumed roughly twice a year. Being a bit of an obsessive compulsive audio geek it usually gets done monthly. The past couple of months it hasn't gotten done. WOW, a quick vacuuming of these speakers does work wonders! The bass is again articulate, with great pitch definition. Drums have regained their dynamic snap. The high frequencies have also come out to play as well. The detail in tambourines is remarkable.


The vacuum that I use for this purpose (Yes I use a specific vacuum, sue me) is very similar to one that Target is offering on line. Click on the picture if you are interested in purchasing one. It is extremely affordable at less than $30. For electrostatic speaker owners this very well might be the best $30 tweak out there.

Saturday, December 16, 2006

You can't do this with a CD

Before you read the rest of the post the link is required viewing. Click on the picture.



My only question is can you mount a Benz Micro Glider cartridge on this thing? I shutter to think what this thing could do to the delicate groves of a record. Is it an automatic can opener too? You can't do this with a CD. For anyone who wants a toy like this that will help them trash they're LPs there is a company in Japan that sells them called Razyworks.

Saturday, December 02, 2006

Knowing your roots

Recently I was afforded the opportunity to visit the Pavek Museum of Broadcasting in St. Louis Park, Minnesota. The museum began life as the private collection of Joseph R. Pavek. A traveling salesman that made it a regular habit to stop into every small town barber shop for a quick trim and to ask the same question, “Do you know anyone with an old radio they don’t want?” In Mr. Pavek’s day the barber knew everyone in towns business.

There were a plethora of interesting exhibits. The first that springs to mind was a musical performance that was recorded simultaneously for acoustic 78RPM record (A horn captured the sound which was then cut directly into the master. No electricity was necessary) and electrical 78RPM record (Microphones and something approaching modern recording technics.) flipping between them was a snap. Of course the electrically recorded version had much better bass response, a more transparent midrange, and more a more accurate presentation of brass instruments. The gentleman guiding the tour briefly mentioned that when electrical recordings made their debut felt that they were markedly inferior to the old acoustical recordings. Thus was born Audio Luddism.

The next exhibit that inspired my imagination was when our tour guide was nice enough to play a Bing Crosby recording on an early Ampex ¼” reel to reel tape deck using a Marantz 5B tube amp and a huge pair of Western Electric horn speakers that were originally designed for movie theater use (I would estimate that the mouth of these horns was roughly 5’ by 7’, yes I meant feet!) The sound was stunning and immediate! Apparently, Mr. Crosby was an early investor in Ampex, supporting an American GI that had brought back some German machines after World War II. He used the Ampex machines to record his radio show so that he could complete it on his schedule, not allowing himself to be a slave to the time slot.

Perhaps the most amazing item on display was a nondescript Crosley radio from 1936. It featured six AM presets and a wireless RF remote, that used a rotary dial similar to what was used on telephones. The range, an astonishing 200 feet! Something that would have been amazing had it been working was a 78RPM record changer that would play one side of the disc, then flip it to play the other side automatically. Unfortunately it had malfunctioned the previous day snapping a shellac in two, just my luck.

In one of the earliest examples of decorators trying to hide audio systems as to not ruin the décor of a room was a 78RPM turntable disguised as a lamp. The shade hid the turntable, and the body of the lamp was a brass horn that emitted the music. It was also a working lamp. The sound, well let’s just say that it was the Bose of it’s time. Feel free to draw your own conclusions.

Also on display was an original Theremin utilizing all tube electronics. I was even granted permission to “play” it. That was a very cool experience. I’m no Jimmy Page, let me tell you. Another interesting tidbit was a Mechanical Television with a resolution of 48 lines (If I remember correctly.) It consisted of a spinning disc drilled with holes and an eye piece that the view looked through. Broadcasts were over AM radio frequencies and most viewers built their own “televisions.”

If anyone is in the St. Louis Park, Minnesota area a visit is mandatory. My tour was courtesy of Tom Mittelstaedt who was obviously equal parts passionate and knowledgeable. The Pavek is located at 3515 Raleigh Avenue in Saint Louis Park, just east of Highway 100, off the West 36th Street exit. They are open to the public five days a week and are also available for special tours and evening meetings. Call the Museum at (952) 926-8198 to make reservations for group tours or just stop in for a visit. Their website is www.pavekmuseum.org It’s not to be missed.

Monday, November 27, 2006

Clarifying the situation


I often tell friends and fellow audiophiles that I consider myself to be an open minded skeptic. I approach all new tweaks with a certain amount of skepticism but also with the view that it is possible that they do make a difference. The Bedini Dual Beam Clarifier was no different. Bedini’s contention is that the polymers of the CD hold a static electric charge. These static electric charges on the disc surface make it harder for the laser of a CD player to read the data, forcing the CD player to employ more error correction. Bedini suggests that both sides of the disc be treated for best results.

Before discussing the results a brief discussion on methodology is in order. There are a number of discs in my collection of which I have doubles. I chose discs where both copies had been purchased extremely close together with respect to time and also chose title that had small production runs. Thus minimizing the chance that they came from different production runs, or even entirely different production plants. I listened to them and the better sounding of the two (There always was one.) became the control disc (the one which would not be clarified) this put the Clarifier at a slight disadvantage. Then the worse sounding of the discs would have both sides of the disc clarified. It is well established that when presented with a choice between “A” and “B” people will have a slight natural tendency to chose “B” when things are close. In order to combat this bias I settled on an “A”-”B”-”A” format with “A” being the un clarified disc and “B” being the clarified disc. So that switches could be done as quickly as possible I clarified the “B” disc before starting to play “A.” While “B” was waiting to be played it was set on a ceramic coffee mug data side up, not in the CD case. The reason for this was that I felt that there was a possibility that the plastic in the case might affect the CD adversely, reintroducing the static charge that the Bedini was designed to remove. Ceramic is considered to be a great insulator and was therefore ideal for the task.

The first disc up was Ron Geesin/Roger Waters-”Music From The Body”, a soundtrack for a documentary on the workings of the human body. The last track on the disc, “Give Birth To A Smile” has guest musicians David Gilmour, Richard Wright, and Nick Mason in addition to Roger Waters. This makes it a Pink Floyd track as far as I’m concerned. The clarified CD had more impact to the bass guitar. The sibilance of Roger Waters vocals were also much more natural on the clarified disc. As the song fades out the female back up singers sing the chorus “Give Birth To A Smile.” On the un clarified disc the song ends on the word “birth” whereas on the clarified disc the listener could clearly hear “to.”

Next up was “Candy Coated Valentine” from Robinella and the CC Stringband’s self titled debut. On the non clarified disc the bass sounded thick and congested and the mandolin lacked a certain pluckiness and body. At the end of the number there is also some type of creaking (A chair maybe?) which is completely inaudible on the on the non clarified disc. The clarification process also gave a greater sense of sound staging depth to the performance. In particular the vocals and the instruments had better separation. The clarified disc also had more rhythmic dive in the bass.

The last track on the formal investigation was Robert Plant’s “All The King’s Horses” from his album “Mighty Rearranger” Again sibilance was much more clean on the clarified disc compared to it’s non clarified counterpart. On the non clarified disc an oddity occurs in the chorus when Robert Plant double tracks his vocals in order to sing harmony with himself. For whatever reason his vocals pull very slightly to the left of center. This does not occur on the clarified disc. There were some subtle electric guitar parts that became much easier to follow with the clarified CD. Again on this selection the vocals seem better separated from the instrumentation.

The Bedini consistently increases the separation between the vocals and backing instruments on every CD that I clarified. The Dual Beam also removed unwanted sibilance on all clarified CDs. Cymbals also just sound more metallic and had more shimmer around them, but this was by no means extra brightness. Many CDs that had always sounded a bit bright went through the Clarifier and were better for it. For what ever reason CDs that were from Columbia Record Club benefited disproportionately from being treated. Sheryl Crow’s “Tuesday Night Music Club” is a prime example of the Columbia phenomena . It’s a personal favorite that was sounding a bit flat, compressed, and digital lately. I had been thinking of buying a proper (non record club) copy now that may not be necessary. Whether this was because of some inherent flaw in their manufacturing process or because they are some of the oldest disc in my collection it is impossible to say. Although I may investigate this further in the future.