Dear Record Collector

Dear and appreciative music listener of authentic vinyl LP recordings, welcome to my pages.

Over the years I have collected many records. In many instances they formed the basis for my pages, for study and research. And many were bought because I did not have the chance to acquire them in the years before because my focus was first on my job in advertising, in designing and copywriting.

Now they have become too many to keep them all. Therefore I will sell items of my well maintained collection, items that may be of interest to you. I wish you happy browsing.

R.A.B.

Pages first published in June, 2013.
Original Concept of these pages Copyright by
Rudolf A. Bruil.

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Cellists on Vinyl
LP recordings of Trios Quartets and Quintets and larger chamber music ensembles
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Operas on Analog Discs
Singers, chorusses and orattorio on LP

 

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Message in Chinese

Cherish your records and if you cannot get an old original, buy a re-release that was pressed by the original label in the 1970s or 1980s.
>> Here is why: read Pressed to the Edge<<
Prokofiev's Peter and The Wolf on Vinyl LP Records
After the 2008 Universal Fire now an important production company of lacquers burned down: APOLLO MASTERS CORPORATION


At the moment the records are evaluated on this system:

Preamplifier is NAD C165BEE, a neat sounding and dynamic preamp. This preamp is connected to a McIntosh MC2105. The main turntable for evaluating the discs is a Technics SP10 Mk2 with Technics EPA 500 tonearm (fitted with a Philips 420 cartridge), mounted on a slate plinth. For a second opinion there is the first Technics SP-10 by Panasonic equipped with a Rabco SL-8E tangential tonearm with Philips GP 422 II cartridge which goes very well in the Rabco. An aternative is Audio Technica AT12XE cartridge equipped with the generally admired Shibata stylus ATN12S.

 Another turntable is a Garrard 301 with SME 3009 tonearm and Ortofon VMS20E. There are alternatives of various makes available like Ortofon MC cartridges, newer models of Audio Technica, Shure (various V15 cartridges). The Technics SP10Mk2 is connected to a ART Pro USB Phono Plus, the signal of which goes into the Tuner input of the NAD Preamp.

All connections are by 'simple' but very musical interconnects of a brand made in China.

The digital signal coming from the main desktop PC is translated by the Audioquest Dragonfly USB DAC 1.2 from 2015. The signal of which is also connected to the NAD. Until recently I used Audioquest CV-8 loudspeaker cables of 8 ft length. These are great cables.

Many years ago I made my own loudspeaker cables but never used these for a longer period. Some time ago I came accross them hanging in a bundel of cables in the storage and tried them.  I was amazed by the excellent sound which showed warmth, an improved lower midband, an extended frequency band, good transient response which is translated in a perfect slam. Just listen to the Sheffield Drum Record (Lab 14). And when I switched to the Pioneer Spec 1, I really was blown away! The cabels are made of simple hard core electricity wire (the core is 2 mm in diameter) the kind that is installed in the wall and leads to the sockets. Parallel to this wire is one strand of a relatively cheap loudspeaker multicore cable with transparent outer sheath. These two wires are not twisted. I only put a piece of white painters tape every 6 or 7 inches to keep the wires together. That's all. The diameter of the strand of the hard core wire is 2 mm (12 AWG) and the other is 3 mm (9 AWG). The bananas carry the brand name Nakamichi and are excellent!  Although they are not accepted by every binding post. The two wires have to be soldered and connected to a short more or less flexible wire to fit the banana. The cable functions very well with the NAD C165BEE as well as the Pioneer Spec 1 and with power amplifier McIntosh MC2105. But the cable has to burn in of course. So my opinion is not final yet and I may change my opinion.

Many audiophiles and also music listeners are well aware of the necessity of clean current to feed the components. There are various power conditioners on the market starting at a few hundred dollars up to thousands of dollars for the ultimate transformer that regenerates a completely new and perfect sine wave. Reviews for the low priced items are not always too positive. This also goes for the Isotek Dynavox x4100. Nevertheless I bought two of these in the spring of 2021. ></font></font></font></p>
  <p><font color=And to my surprise the reproduced sound of my system improved notably. A further step was brought about by two heavy power cables, a fancy one with red and gray braided finish and another heavy one with a grey and white, more neutral finish. They give an improvement of the sound: better harmonics, extended frequency band and spatial imaging. I will publish a more elaborate review later on my Audio and Music Bulletin.

 

 A pair of JBL 4312A Monitor Loudspeakers has been refurbished with new drop-in cones (including voice coils and corrugated surrounds) originally made by JBL. I guess it was the last pair offered by Midwest Speakers.  In 1992 I visited the legendary French designer of the La Platine turntable and tube amplifiers, Jean-Constant Verdier. He showed me his "museum" with rare and historic items and equipment. He also showed me his product line and we talked for several hours about many aspects of the reproduction. During that conversation he told me that he wanted to add one or even more speaker systems to his line of products and said that the speaker system should be designed and optimized in relation to a given integrated amplifier or combination of pre/power amplifier. That's very important. When I was optimizing my JBL 4312a cabinets (which I had purchased from an eBay member in the US several years ago) I remembered that conversation. I had been trying to optimize the systems and was achieving results that I didn't like entirely. Nevertheless I acquired a lot of experience about the amount of damping material and the stiffness of the cone suspension. I only made great progress after I had bought the NAD C165BEE preamplifier.

The corrugated surrounds of the woofers of the 4312As should have a certain stiffness. I finally found that acrylic paint (black) from the art supply store was an excellent option for treating the surrounds. A little water should be added to a small amount of the acrylic. The amount (thickness) of paint applied is important. In case too much is applied, it can be partially removed using a brush with acetone. The woofer of the 4312a has no filter section. With the paint the frequency characteristic and bandwidth of the woofer will be altered. If this paint is applied, it should be given time to dry for several hours before you start playing music. The best method is to let it dry during the night.

The midrange of the 4312a has a filter section. But here too the application of the acrylic paint on the surround has a significant influence. So it is important to determine it in conjunction with the operation of the filter section and the amount of damping material for a phase correct transition from woofer to midrange to tweeter. As damping material, glass wool is recommended. I chose the soft quality instead of the rugged type. This material is easily cut to size. Because of its softness it is also ideal if you want to remove a layer so that the amount of damping can also be regulated. The optimization of the system has to be done while fully taking the performance of the woofer in its own compartment into account. Finally it is also important how to position the speakers in the room to achieve best results.

If you are interested in the qualities of JBL speakers you should check the Kenricksound website from Japan. Select the language and listen to the sound quality of the various loudspeakersystems they have (or had) for sale on their website and on YouTube.



Mail your selection to vinyl@soundfountain.eu

Pages first published in June, 2013. Original Concept of these pages
copyright by Rudolf A. Bruil.

 

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1998-2022 by Rudolf A. Bruil and co-authors