Posted by sanjaysahani (i) on January 15, 2001 at 06:22:10:

I NEED YOUR SUGGESTIONS AND EXPERT ADVICE FOR USING DIGITAL X-OVER TO BI OR TRI AMP SPEAKERS, AS I AM THINKING OF PLANNING TO BI OR TRI AMP SPEAKERS.
TO ACHIEVE BETTER AND ACCURATE SOUND FROM SPEAKERS, THE FOLLOWING MENTIONED THREE METHODS ARE MENTIONED BELOW WHICH DO YOU THINK WOULD BE BEST, THAT WILL TUNE BETTER WITH SPEAKERS MENTIONED BELOW
1. Will I get accurate sound if I use a digital equalizer as a crossovers.
2. Using passive network named "Phase Tuned High-Level X-Over".
Phase tuned High-Level X-Over has many functions, not only balance control, but also phase tuning, HF driver protection. Is a better solution than Bi or Tri Amping the Speakers.

3. The way I'm suggesting to use digital x-over is a very unique purest approach. Usually, digital x-overs don't have a digital input, so you have to use there analog input, meaning that when you use it for CD reproduction, you have to have a DAC before the x-over and AD convert at the beginning of the x-over. The signal is D-A converted at the end of x-over to be sent to the amplifiers. That means the signal goes through three A-D, D-A conversions, and it's not good.
So But we can bypass the first D-A and A-D conversion by using processor's digital input and feed the signal directly from the transport into the digital processor. It reduces the stress to the signal dramatically and also gives you such a freedom to manipulate the signal without any audible degradation.
When people talk about a digital x-over, they are talking about extra A-D, D-A conversion. and that not what I'm doing.
Well I think it this way with analog x-overs, the signal has to go through many capacitors, condensers, resistors, coils, etc. They all add stress to the signal one way or the other. With digital, signal is all processed in bits, and even though there are errors everytime the signal is processed, the amount of stress is far less than that of analog. Also, a digital processor usually comes with many functions, parameteric equalizer, delay, choise of slope characteristics, etc., allowing us to manipulate phase, attenuation, x-over points to squeeze out the best results.
Above recommendations are very sophisticated systems and not many people have realized the advantage of multi- amp system with digital x-overs yet.
Please also recommend me the brand name or model number of company making world class Digital Crossovers and Active and Passive Crossovers and Digital Equalizer.
Please also suggest suitable best of best world class companies making the following below mentioned products :
1. Digital Crossovers.
2. Digital Equalizer.
3. Volume Attenuators.
4. Conversion units from consumer S/P DIF to AES/EBU format.
5. 44.1 to 48kHz sampling converter.
6. A couple of S/P DIF-AES/EBU adaptors.
I also need your recommendations for :
1.Your recommendations for using which Company's, which model or brand name and which kind of Amplifier i.e. (Tube
or Solid state) & which kind of Pre Amplifier i.e. (Tube or Solid State).
2. Your recommendations for using world class DAC of which company and model number or brand name.
3. Your recommendations for using 24/96 DAD or 24/192 DVD-Audio playback,or SACD/DSD playback CD Transport of which world class company and model number or brand name will suit with DAC for Digital X-Over Set up.
What are your views for :
1. CEC TLO MK2, CD Transport http://www.cec.web.co.jp (Japanese) http://www.cec-international.de (English and Germans), it is regarded as the most accurate CD Transport available, separate power supply, extensive vibration control, belt drive cd platter. AES/EBU , rca and optical digital outputs, will be better OR
2. 47Labs Pitracer CD Transport www.sakurasystems.com
3. Ensemble Dicrono CD Transport which has a TEAC mechanism in it.
4. Linn CD-12. www.linn.co.uk
5. Wadia. CD TARNSPORT.
6. MBL CD TRANSPORT.
7. Forsell Air Reference MRII,
8. Esoteric P-50 (Teac) www.teac.co.jp
9. Atlis CD Transport www.atlisaudio.com
10. Naim CD Transport. www.naim-audio.com
11. Goldmund CD Transport (which is turntable CD Transport). www.goldmund.com

4. Please also recommend world class Company's name, model number or brand name for Arm and Cartridge, Turntable Phono Stage and Step Up Transformer FOR PHONO LP's.
5. Your recommendations for using which kind of speakers i.e. Horn Speakers (Front Horn Loaded, Rear Horn Loaded or Full Range Horn Loaded Speaker) or Regular Box Speakers for using Digital X-Over to Bi or Tri Amp Speakers.
Few speakers are named for your recommendations The only thing that bothers me is that we must be able to control the different drivers of the speaker system that we choose in a multiway system as speaker tend to have different materials they are made from, leading to changes in tone with different frequencies. I personally find this very unnatural .
a. Tannoy Westminster Royal.
b. Kinoshita Monitor Speakers or Rey Audio WARP-5 or Warp-1 Or Kenshito Monitor Speakers of www.reyaudio.com
c. Pipedreams Speakers. www.pipedreams.com
d. Westlake Speakers. www.westlake.com
e. Yamamoto Sound Craft BX-170 SPEAKER & YS-604 Altec 604 BASED SPEAKER USING ALNICO MAGNETS
www2.117.ne.jp/~y-s and email shige-y@mh1.117.ne.jp
726 Sakaki-cho, Ono-shi, Hyogo, Japan 675-1323
tel/81-794-62-5655.
f. Akasaka Kougei Onken making Speakers using Gauss Drivers.
9-4-7, Akasaka, Minato-ku, Tokyo, Japan 107-0052
tel/81-3-3401-8226.
g. Ruthy-3 Speaker of Audionote (Kondo) Japan www.audionote.co.jp
j. Ocellia Kedros and Audiotorium 23 Rondo Speakers www.auditorium23.de using Phy-Hp drivers in thier speakers or Supravox (used by Radio France) www.phy-hp.com
h. Finallab Speakers www.finallab.com
k. Utopia Instruments of Japan.
l. Beauhorn Speakers added Visaton Supertweeters which will allow response up to 35kHz. and Subwoofers.
m.Classic Audio Reproduction. www.classicaudioreproduction.com
n. Wilson Audio Watt/Puppy
Wilson Audio Grand Slam X-1
o. JM-Labs Grande Utopia
JM-Labs Utopia
JM-Labs Mezzo Utopia
p. B&W Nautilus 801.
q. Onken Super-Harmo speaker (Japan). These are 3 way speakers.
r. To obtain the UREI 813 Studio monitor, making sure the drivers are Alnico Magnet Altec Units.
s. Largest Studio Monitors by ATC .
y. Shindo Laboratory. http://www.shindo-laboratory.co.jp/
A. The design of " Latour ". BY SHINDO LABS JAPAN.
The units using for this loud speaker system are one of pair ALTEC 515(woofer) and ALTEC288 driver. Horn unit ( Latour) and crossover network are Shindo Labs originals.
Nominal Impedance: 16 ohm. Sensitivity: 103 dB.
Demensions: W 910 x D 490 x H 1265 mm.

B. The design of 604E field unit. BY SHINDO LABS JAPAN.
WHich e are modified from the Altec 604E. and Crossover net work and power-supply for unit are Shindo Labs Originals.
Nominal Impedance: 16 ohm. Sensitivity: 102 dB
Demensions: W 1100 x D 350 x 1265 mm.
z. JBL S5000 Project K2 Speaker or JBL DD55000 Project Evereset Speaker.
a1. Genesis Speakers.
a2. Dynaudio. [Evidence].
a3. Sonus Faber [Guenari Hommage].
a4. Meadowlark Audio [Nightingale]
a5. Mr. Schultheiss Contact at http://www.dsi.ch is a swiss based speaker manufacturer who makes such speakers with digital crossovers and Digital inputs.
a6. Ruthy-3 or Ruthy-5 Speakers of Audionote (Kondo) Japan www.audionote.co.jp using SILVER COILS IN SPEAKERS.
a7. Rethm Speakers. www.rethm.com
a8. Acapella Excalibur Speaker. http://www.acapella.de/english/

WHICH SPEAKER DO YOU THINK WOULD BE BEST THAT WILL TUNE BETTER WITH DIGITAL X-OVER?
DO YOU HAVE ANY BETTER SUGGESTION OR ADVICE OR BETTER MODEL OF ANY OTHER COMPANY PRODUCT OR BETTER WAY TO BI OR TRI AMP ABOVE MENTIONED SPEAKERS.
6. Your recommendations for using which kind of cables and interconnects i.e. Copper or Silver which will suit and tune well with the above mentioned digital set and also Indian Music. Please also explain me that is only Copper cable and interconnects everywhere better or complete Silver cable and interconnects everywhere better? or Interconnects in copper is better and only in output transformers is silver better than copper?
7. The power voltage in India is 220.
The reason to ask you the above mentioned recommendations is that you may be aware Indian instruments being the most subtle, and difficult instruments in the world to reproduce. Indian music is
unquestionably the most advanced music in the world, in many respects.
Certain Indian instruments and tonescales are very hard to reproduce by a amp, pre amps, DAC, Speaker Cables and Speaker, especially sitar, veena and Indian classical violin.
Tabla has another own tone, the pitch on the skin must be reproduced right and transient. You see sometimes, the tabla player plays very fast and it sounds very crisp, very exciting, many tones one after
another. If the amps, pre amps, DAC , Speaker Cables and speakers are not matched and tuned properly than some of the faster notes may be joined up and not separated.
The time is the same. If a person plays the tabla for one minute, of course every audio system should play back the same music in one minute, but in some systems, the music sounds faster, in other it sound slower. Please also note that there is lot of melody and music of many instruments and vocal in Indian
music.
If you listen to music to :
1. The Artist name : Ali Akbar Khan,
2. The Artist name : V.M. Bhatt,
3. The Artist name : Zakir Hussain's (Instrument : Tabla)
4. The Artist name : ShivKumar Sharma (Instrument : Santoor)
5. The Artist name : Bismillah Khan (Instrument : Shehnai)
6. The Artist name : Pandit Ravi Shankar (Instrument : Sitar)
7. The Artist name : Hariprasad Chaurasia. (Instrument : Flute)
8. The Artist name : A.R. Rehman Song : Vande Mataram,
9. The Artist name : Lata Mangeskar. Song : Select any song.
10. The Artist name : Jagjit Singh. Song : Select any song.
11. The Artist name : Daler Mehandi. Song : Select any song.
12. The Artist name : Falguni Pathak Song : Maine Payal Hai.
The above mentioned are the few examples of Indian pop and Indian classical music regarding western classical and pop I also listen to Yanni, Richard Clayderman, Vannesa Ma (Voiln), Miles Davis Jazz, Michel Jackson, Madona, Janet Jackson, Pop, Rap, Indian pop, Indian Classical, Techno and Rock music.
My aim is to purchase a audio system which just sounds as close to the original sound which was recorded as possible. One of the problems that most amplifiers face, even the most expensive of them, is the extremely high sensitivity of the speakers very few can be found with a sufficiently low level of residual noise. One doesn't want to hear mains hum in musical pauses, it destroys the illusion of listening to a live musical performance. The pure music system not only fulfills this criterion, it has the speed, openness and neutrality of the speakers themselves - you hear the recorded performance not the system. You are also very well aware Indian instruments being the most subtle, and
difficult instruments in the world to reproduce. Indian music is unquestionably the most advanced music in the world, in many respects.
I also place highest emphasis on MUSICALITY, dynamics, tonality and timbre, soundstage, feelings and emotions, bass / treble, transparency, naturalness, refinement, tonal accuracy, meaning violin sounds really like violin, a Harpsichord that sounds like a harpsichord and human voices that sound like human voices combined with "holographic" soundscaping etc. detail, speed, power handling, openness / lack of "boxiness" and also not experience fatigue after extended listening.
Basically some of the best music reproduction possible under domestic constraints.
The dimension of one room is LxBxH = 25x20x10 (Foot) and has Ac fitted in it and is 100% made of concrete.
The dimension of other room is LxBxH = 15x15x12 (Foot) which is wall to wall carpeted and has Ac fitted in it. My all rooms are made of concrete and my one room which is LxBxH = 25x20x10 (Foot) and has Ac fitted in it has one wall of natural stone for interior design purpose.
Awaiting for your reply at your earliest.
Thanks.
Warmest Regards.