Author Topic: The Cape Town Hi-Fi Club  (Read 303922 times)

Offline chrisc

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Re: The Cape Town Hi-Fi Club
« Reply #1515 on: May 09, 2019, 09:27:09 PM »
Wednesday 8th May 2019

Nine enthusiasts (including one from Australia)
One computer
One Raspberry Pi
One DAC
Two speakers
Three power amplifiers
One (valve) pre-amp
One buffer stage
Forty-five pieces of music
All the cables and connectors

Allowed us to go through a careful listening session, at the end we decided the valve pre-amp really did shine

The cat went to sleep, but that is cats








        

   
Music is the shorthand of emotion

Offline The Godfather

Re: The Cape Town Hi-Fi Club
« Reply #1516 on: May 25, 2019, 10:41:37 AM »
Nice!

Offline chrisc

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Re: The Cape Town Hi-Fi Club - June 2019 meeting
« Reply #1517 on: May 29, 2019, 08:49:15 AM »
The June meeting is for hi-fi club members

If this sounds like something you would be interested in, please send an email to capetownhificlub@gmail.com expressing your interest


Music is the shorthand of emotion

Offline chrisc

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Re: The Cape Town Hi-Fi Club
« Reply #1518 on: June 18, 2019, 01:06:48 PM »
Monday 17th June.  A brilliant winter's day.  Having a braai, a couple of dops and listening to Ramsey's undoubtedly advanced system

Thanks to Ramsey (Row 1, left picture in the centre)

Thanks to all who came

Row 3 on the right is a teflon cone or amplifier support filled with concentrated oil









« Last Edit: June 18, 2019, 01:09:58 PM by chrisc »
Music is the shorthand of emotion

Offline funcrusha76

Re: The Cape Town Hi-Fi Club
« Reply #1519 on: June 18, 2019, 07:46:34 PM »
Was a good afternoon, in the company of Ramsey, the Chrises and some new acquaintances. The system at Audio Tweak sounds quite remarkable. The improvements I heard since I was last there were nothing short of astonishing.

Offline Gerlach

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Re: The Cape Town Hi-Fi Club
« Reply #1520 on: June 18, 2019, 08:02:56 PM »
Thanks for the arrangement guys. Nice to see everyone again. Quick question, what software is Ramsey using for streaming his audio?
Good drivers have dead flies on the side windows. (Walter Röhrl)

Offline funcrusha76

Re: The Cape Town Hi-Fi Club
« Reply #1521 on: June 18, 2019, 08:11:57 PM »
Quick question, what software is Ramsey using for streaming his audio?

Hardware is by SOtM, and the software is based around Logitech Media Server / Squeezelite.

Offline Gerlach

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Re: The Cape Town Hi-Fi Club
« Reply #1522 on: June 19, 2019, 01:29:16 PM »
Hardware is by SOtM, and the software is based around Logitech Media Server / Squeezelite.

Thanks, got it, it's called squeezelite-x .
Good drivers have dead flies on the side windows. (Walter Röhrl)

Offline chrisc

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Re: The Cape Town Hi-Fi Club
« Reply #1523 on: June 27, 2019, 08:50:35 AM »
Music is the shorthand of emotion

Offline Trompie67

Re: The Cape Town Hi-Fi Club
« Reply #1524 on: June 27, 2019, 09:13:59 AM »
Monday 17th June.  A brilliant winter's day.  Having a braai, a couple of dops and listening to Ramsey's undoubtedly advanced system

Thanks to Ramsey (Row 1, left picture in the centre)

Thanks to all who came

Row 3 on the right is a teflon cone or amplifier support filled with concentrated oil









Any feedback from the members in attendance with regards to Ramsey's "remastering" of audio files?
*Insert profound or witty phrase here*

Offline chrisc

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Re: The Cape Town Hi-Fi Club
« Reply #1525 on: June 30, 2019, 03:35:32 PM »
Well, after all the hype and promotion about this exercise, we did not get round to listening to any of it.  I mentioned it on leaving, to find there was no time, etc.   Another day perhaps

The system there is very revealing and would I imagine clearly display some differences.  If it can resolve substituting brass feet with teflon cones, then I expect something profound
Music is the shorthand of emotion

Offline chrisc

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Re: The Cape Town Hi-Fi Club
« Reply #1526 on: July 02, 2019, 08:35:59 AM »
Music is the shorthand of emotion

Offline Shonver

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Re: The Cape Town Hi-Fi Club
« Reply #1527 on: July 10, 2019, 05:41:22 PM »
Facebook reminder says that tonight's meeting is at NG Kerk.
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Offline Capetowntracks

Re: The Cape Town Hi-Fi Club
« Reply #1528 on: July 10, 2019, 06:42:45 PM »
Hmmm... need to fix that. Thanks for the heads-up.
Address is as shown in the meeting notice above.

Offline chrisc

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Re: The Cape Town Hi-Fi Club
« Reply #1529 on: July 11, 2019, 09:06:16 AM »
A select few (ie, not many turned up) listened to an interesting talk delivered by Pierre Watts

(I shall assume that any inaccuracies will be remedied by whoever was there, including Pierre himself)

Pierre explained the concept, very popular with suppliers wishing to distribute audio via an Ethernet link, where errors could develop along the signal chain, with the signal going through multiple switches, being subject to interference from other network traffic.  Various attempts have been made to address this problem, one of the successful ones being to add a time signal to the data stream that could be read at the destination to ensure the signal was recompiled in an accurate fashion

Ethernet is extremely popular since the basic infrastructure is readily available, the hardware is easy to set up and it is inexpensive.  Ethernet was not originally designed to carry audio signals and these work-arounds are needed to correct these deficiencies

Pierre then touched on the design of Class D amplification, which, he said, only became a meaningful alternative to traditional Class A and Class A-B after about 2000 when improvements in filter design were able to remove the inherent problems of this design.  A lot of expensive research has been done by manufacturers like Devialet who are supported by the French Govt to improve Class D.   One huge benefit of Class D is that the amplifier will be above 85% efficient, thereby not wasting resources (a better "green" concept)

After this interesting but intense scientific discourse, we retired to the dining room and partook of dohnuts, samoosas, some red wine and managed to finish off a bottle of Old Brown Sherry. 

After all, its winter in the Cape and you gotta keep yourself warm








Music is the shorthand of emotion