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Old 5th May 2017, 10:02 AM   #81
AKSA is offline AKSA  Australia
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Hi Raj,

Yes, eagle eyes!! I found that by using 3.3uF I could get just a little more bass from the bottom end even though it did not actually measure better, and I have quite a few of these MKT caps on hand, they are a little easier to fit and look very neat and tidy. I have also increased the rectifier diodes to give more latitude with high power. Some of the through hole transistors have been replaced with modern smds to save a little space, but aside from this minor change, Raj, no other changes; the schematic and other details are unchanged.

I am working through a new batch of Maya modules. Filipe is first off the rack with his large, active system.

I have built one Maya with a large, 625VA transformer in place of the two 300VA. It sounds just the same; but for genuine separate mono I like two 300VA transformers.

It gives me huge pleasure to hear you like the Aspen house sound; it is the combination of my and Steve's thoughts; we are both over 65, our ears are failing, but the processor between them is still acute!! That you enjoy the sound (with less years under the sun than us) is a great flattery!!

Ciao,

Hugh

I could not be happier with the way the layout and implementation has been done.
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Last edited by AKSA; 5th May 2017 at 01:24 PM.
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Old 8th May 2017, 01:09 PM   #82
Rajkumar_ is offline Rajkumar_  India
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Default Matching Amp

Hi Hug, My name Rajkumar friend of Suresh who have your Maya200, I'm crazy with hiend music since 30 years. myself and Suresh yesterday (May 07, 2017) hook up maya200 to my Jamo D590, I am very impressing with the sound of maya200, we had compared between Dared VP-10 Tube mono block and Maya200 first time I heard SS amp have tube sound! I have another HIEND speaker TANNOY GRF MEMORY (HE) but we have not try yet connect Maya200 to Tannoy. World wide many forum has discussed TANNOY matching perfectly with only Tube amps, I was tried many SS amp in my TANNOY but the sound cannot compare to tube, tube sound always warm and natural and tight bass! We will try to connect Maya200 on Tannoy and let you know very soon. I have question before connect Maya200 and Tannoy. Presently my TANNOY driven by 845 Push and pull mono block amp spec: Amp out put: 120 peak (60RMS) Frequency Response 10Hz -32kHz (+/- 3B) signal-to-noise ratio: -90dB Input Volt: 1V My speaker spec: Allowable input:125W continuous 520W peak Output pressure level 98dB/w/m Frequency characteristics: 29Hz-25KHz. Crossover Frequency: 1KHz please let me know which ASPEN amp will matching with my speaker? Thanks Rajkumar
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Old 8th May 2017, 01:23 PM   #83
suresh is offline suresh  India
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Hugh should be able to advice on my friend rajkumar request . yes yesterday we did some test on maya in his house .
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Old 8th May 2017, 01:24 PM   #84
AKSA is offline AKSA  Australia
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Hi Rajkumar,

Thank you for your lovely post and interest in the Maya! My golly, you have some WONDERFUL gear, I love those PP 845s, are they completely silent? If so, you have a very good one because the filament is difficult to eliminate hum!

Yes, I agree, I have voiced the Maya to deliver tube sound, you are 100% right!
The Maya will tango with your Tannoy very easily...... 90dB/watt/metre is relatively sensitive and easy to drive.
I have to say that I love the 845 RCA tube in single ended, and also the 211. You may also know of the 833A, a tube now made by the Chinese and used in a cheaper copy of the Japanese WAVAC, which appeared in the 80s for $USD250k!! It was designed and manufactured by a Japanese road building tycoon, and was regarded as one of the best amp ever made. I have heard the Chinese version - a 75 year old friend of mine has one and I listen frequently to it. I take my cues from these amps when I design my amps; so you and I are on the same page!

I do have two amps, the SAKSA, an 85W SS amp, and the Maya 200. Both would suit your Tannoy, but considering your very nice amps I would consider the Maya is the better, my flagship product. You know it well know, so you need no introduction.

The SAKSA is relatively cheaper, less than half the cost of the Maya, around $AUD1800. With a high end lover of good equipment, it is always a difficult choice, cost or quality. But this is only your choice; certainly the SAKSA would be very good but not quite as good as the Maya!

Hugh
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Last edited by AKSA; 9th May 2017 at 05:31 AM.
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Old 8th May 2017, 01:35 PM   #85
suresh is offline suresh  India
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its 98dB/w/m for the tannoy grf memory.
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Old 8th May 2017, 01:40 PM   #86
AKSA is offline AKSA  Australia
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Thank you Raj!

Even easier to drive, a walk in the park for both amps.......!
Are these the Westminster Tannoys?

Hugh
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Old 8th May 2017, 02:16 PM   #87
Rajkumar_ is offline Rajkumar_  India
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Hi Hugh, Thanks! My speaker TANNOY GRF MEMORY -HE
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Old 8th May 2017, 05:03 PM   #88
saf is offline saf  Portugal
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Holy Guacamole !! Those Tannoy are some serious relics !
If my humble input serves of any good, i would vote that the Maya will deliver with
those speakers. Those 15" woofers will sing like a Pavaroti standing on mount Vesuvio ! But hey....only if you new someone that actually HAS a Maya....hmm...

I believe they are current hungry speakers but with a concentric driver, dispersion and phase coherence must be spot on. I never heard these, but have heard similar designs.

Raj, do you provide the public lighting in your street ? With that amount of bulbs, you ought to !!!

Cheers
Filipe
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Old 10th May 2017, 04:16 AM   #89
Rajkumar_ is offline Rajkumar_  India
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Hugh, Yes you're correct PP 845 run very silent, I love my amps as well as the sound. At the present I do not have any issue with my amps, only about the life of tube and availability. Last month there was problem with preamp tube 6SN7 very hard to find. This is the reason I will consider switch to Maya200. I have one question to Maya200, can we modified Maya200 balanced input instead of existing unbalanced? my preamp only available input & output all balanced. What is the current price of maya200? I love mono blocks, if possible bi-amp (4 mono block) better sound. Thanks Rajkumar
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Old 10th May 2017, 10:42 AM   #90
AKSA is offline AKSA  Australia
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Hi Rajkumar,

Difficult questions!
I do not offer balanced input with the Maya 200 because I believe balanced is not suitable for very high quality domestic audio. Reason: These amps do not have long leads like proaudio amps, so noise entry is not an issue. Furthermore, the balanced configuration changes the harmonic profile of the amp, nulling even order and leaving only the odd orders, which are not very musical. You can set up a Maya with balanced, however; it needs two expensive balancing transformers which cost about $US400 the two for good quality. Best are the US Jensen and the Norwegian Lundahl, and this would be the suggestion for this. But I can tell you emphatically the sound will not be better. There are reasons why balanced is good with sound reinforcement, proaudio (studios) and broadcasting (long leads like proaudio).

These are the facts as I understand it. Many disagree, and there are religions around this method.

Furthermore, I build my Maya in one enclosure with dual mono construction. Reason: Reduction of cost...... But I use independent power supplies for each channel, like a monobloc arrangement. The monobloc approach is a marketing technique to increase profit, though again, there are religions about this.

I might be disappointing you.... I don't believe in biamping either; I feel the amp should be able to cope with the full frequency output of the music, and while I like two or three way speakers, I like one stereo amp for all. Remember, I try to design the best possible amp using economic techniques; many systems are multi-amp, but I have only rarely heard really good systems using active crossovers. Their best use is, again, in proaudio.

Interesting that you are very happy with your tube amps, but like many audiophiles, you are upset by the poor availability of good quality tubes. Sadly, they wear out and replacements are difficult and costly. I agree with this too; I love tubes, but not the big ones, they are like light bulbs, and wear out too quickly!

Cheers,

Hugh
I sell the Maya 200 fully built for $AUD4600 plus, of course, the shipping.
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