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Old 14th July 2020, 11:31 PM   #161
AKSA is offline AKSA  Australia
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Join Date: Sep 2001
Location: Melbourne, Australia
Absolutely right, Jens, and thank you for bringing this up.......
The amp is designed for 65V rails, and while we can go to 58V rails (40ac toroids) we cannot go lower without:
1. Revision and rebuild of the protection system;
2. Revision of the driver circuits to give adequate drive to the outputs when operating with higher current surges, and
3. Revision of the feedback system to ensure compensation is spot on for the different operating points.

All this requires a lot of time and iteration and I'm getting tired and slow.......
I have a spectacular amp of high power and 65V rails. It will drive down to low impedances as it is, and I know it is utterly reliable. This has taken a couple of years to get just right.... and I'm loathe to change it now, particularly as I have the modules assembled in a high quality factory - in Australia, too!

Ciao,

Hugh
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Old 15th July 2020, 08:35 AM   #162
Jens-AT is offline Jens-AT  Denmark
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Join Date: Dec 2009
Location: Copenhagen
Thanks for chipping in, Hugh!

The thought behind my initial idea of course was not to use higher power than necessary for the very efficient drivers I have, at the same time retaining the superb Maya sound

I have used a number of different amplifiers over the last 40 years (the majority being amps from Hugh's hand). Some amps can be used with a wide supply voltage range, and some can't, it all depends on the construction.
If in doubt, I have always asked the manufacturer and consequently never have had an amp fail due to incorrect implementation

The Mayas are eagerly awaited here - and they will be implemented using the acceptable voltage, as recommended by master Hugh!

Cheers,

Jens
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Old 4th August 2020, 12:04 PM   #163
Jens-AT is offline Jens-AT  Denmark
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Location: Copenhagen
Default Mayas shipped

Today, UPS picked up the parcel with my Mayas from Hugh's place, and they are now on their way to Copenhagen

Australia Post was de-selected, as there seems to be problems getting overseas parcels through with them (wonder if they are storing them in the outback somewhere) ...

Anyway, I'm keeping my fingers crossed for a safe transport - you never know in these times.

And I can hardly wait!

Many thanks to Hugh for getting the UPS setup done - and for the magnificent packaging of the amps (Hugh sent photos)

Cheers,
Jens
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Old 4th August 2020, 11:55 PM   #164
zman01 is offline zman01  Bangladesh
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Jens,

Look forward to pics and listening impressions once the amplifiers reach you. And hope that is really soon!
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Old 5th August 2020, 01:37 AM   #165
AKSA is offline AKSA  Australia
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Thanks Jens!!

I'm worried about Bjarne's package; it was despatched 30th June, this is a VERY long wait for him and I have a feeling that that Melbourne warehouse is very full, waiting on planes to northern Europe. Very frustrating for all of us......

Hugh
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Old Yesterday, 08:41 AM   #166
Jens-AT is offline Jens-AT  Denmark
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Quote:
Originally Posted by zman01 View Post
Jens,

Look forward to pics and listening impressions once the amplifiers reach you. And hope that is really soon!
Thank you! Parcel tracking shows that the Mayas have already left Oz - so far so good!

The four Mayas are going be used in my active, quatro-amped speakers (see photo), replacing some other amps. The Mayas will power tweeters and midranges, and I think it will be like the song of angels

The speakers are called 'The Equilibrium Project' and feature digital x-overs/DSP.
Baffles are 20 mm aluminum, and the speakers weigh in at around 125 kgs each, standing about 1,9 metres tall.
All amplifiers are mounted on the rear (behind the grilles) - I have to try and remember to take some photos of the replacement process showing this

Cheers,

Jens
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