The key to Tannoy sound?
Trichecking if it really is 1Kv
RCA 833, specs:
Values per 833 working class B as an R.F. amplifier with a maximum modulation factor of 1.0.
Va max, 3 kV
Ia max, 400 mA
Pin max, 450 W (This is the total input power to each 833 at maximum drive.)
Pa max, 300 W (This is the maximum anode dissipation and at this power level the anode reaches a temperature of about 800 °C, and glows red hot.)
Vg1 max, -70 V
Peak R.F. grid voltage, 90 V.
D.C. anode current, 150 mA
D.C. grid current, 2 mA
Driving power, 10 W appx.
Output power, 150 W appx.
The king of SET amplifiers?
David, the importer of Shindo and other high end gear has been demonstrating a pair of Wavac HE833 monoblocs. Each amplifier uses RCA 833 valves. Direct-coupled input featuring a WE437A input tube and the driver is a triode wired KT 88.
So how does a 150Watt Single ended triode amplifier sound? I only listened to the Wavacs through Tannoy Westminster clones, pre and phono stages also by Wavac. Big sound, effortless dynamics, natural voice and strings. Good and clean from the deepest bass all the way to the highest frequencies I could hear. Most of the music we played was familiar, Beethoven and Vivaldi all the way to female and male vocal. The Tannoys of course looked and sounded great, having ample Single Ended Watts really made them sing.
In the pictures you can see the size and finish of the amps and the Tannoys. Also notice the Autographs made by Shindo.
MELODY AMPLIFIERS will not be able to be at this meeting, more details in the nextost.
Melbourne audiophiles were heard crying for joy as the gloomy clouds of winter parted. The gentle glow from the sky began to warm their hearts with anticipation, for this year they are fortunate to experience two Hi-Fi Shows for the year. This month the Australian Hi-Fi and AV Show returns to Melbourne, showcasing at the Rialto Hotel.
Back in July, the Melbourne International Hi-Fi Show was a first for the StereoNet guys. Not only was it their first time in organising a very successful show, it was also a first for Melody Valve Ltd to exhibit all of their new models of amplifiers. If there ever was an award at a Hi-Fi Show for an “Exhibitor who tried the hardest to impress”, then Melody would be the clear winner.
Melody will be demonstrating two systems for the club, from their new range of Everest Amplifiers. The first model is a 75W Class AB amplifier, the Everest 120, which uses a pair of KT150 tubes per channel. This unit will be partnered with a pair of classic Yamaha NS1000 speakers. (Kindly provided by our Editor) The other amplifier is a pure Class A model. The Everest 845 pushes out 28Wpch from, you guessed it, an 845 tube. It is driven with a 300B, all are Western Electric valves. A second set of speakers from “Hi Fi Exchange” will complete this system. A pair of Whatmough 502’s is a particular brand that is very familiar among the Club members.
Melody was founded back in 1977 by a group of Chinese based audiophiles now living in Melbourne. With a small number of models, finished in “gun metal grey”, they established their first sales out of Bayswater. Now with their third generation of amplifiers looking more esoteric, they have established themselves in Europe with a stable of eight models. With plans to expand further, this small company has come a long way.
Nick Karayanis – Program Co-ordinator.
To add to Nick’s writeup: There are still members who would remember a club visit to the Melody showroom in Bayswater many years ago. At that time the prices seemed very realistic for the sound and build quality despite some disparaging (rude) comments by some of the visitors. In the years since I have sold a number of Melody amplifiers which not only sounded really good but were 100% reliable. I still regret missing a Melody 2A3 that came into the shop while I was away. Maybe one day…
Melody’s history can be found at http://www.melodyamplifier.com/history-of-melody/
John is selling lots of his collectipn of tare and unusual stuff. Look at his ebay identity accoustic null
And at Ray’s there is an interesting pair of Dahlquist DC10 speakers. Really worth hearing; if you’ve never hear these before, they are time aligned with mostly open baffles, electrostatic sound but with bass. And an interesting Kreisler valve radio. I don’t knoe anything about valve radios but I’m sure Steve will answer any queries.
Ray promises to play any CDs you bring on Saturday, come and compare the Dahlquists with the Puresound and other speakers.
Next meeting will demonstrate the ATC speakers we had hoped to hear in March. Bill Woodman described the reasoning behind the design of his drivers previously. Now we will be able to hear if they are as good as promised.
The September meeting was really good fun, the music was provided by members, Oppo 95 as the source, the preamp was a Lucas Cant “Black Arts” that Matt has now claimed. The amp was John’s own Tango designed power amp now using Siemens f2a long life pentodes ala Shindo Cortese and Simphonia. Fabulous sound, the speakers were Krixs using 2 8″ drivers plus Dynaudio D76 tweeter.
I still enjoy the english descriptions, especially the Siemens C3m valve ” various kinds of electrical properties are excellent, and it is the feature that sound quality is very beautiful.” We all knew the 300B sounded good, this is the first time I’ve come across the C3m driving a 300B.
Last week I helped unpack newly sourced valves, new old stock. Brands like Mullard Philips and GE, my favourite is genuine never used 6550 A valves as used by Audio Research, only $400 per set of four. Plenty of other weird and less useful valves, eg 12SJ7 and some others. check John’s Hi Fi Exchange.
Start at 8PM Klipschorns
The Audio Guild crowd turned up at John’s shed at the bottom of the garden to listen to his excellent Klipschorns, slightly filled in with the Hartley 2×24″ sub. Power and preamp by Luxman/Luxkit, the preamp running from battery power.
Also in use was the EMT 930 in it’s industrial hammertone grey finish, initially with an SPU and then with the rare Neumann cartridge, pic to follow:
And for technical info have a look at http://www.classicaudio.ru/articles/jacobi_emt.pdf.
Later there was (By popular request) a change to another Luxman integrated amplifier and the beautiful JBL4431 monitors.
After tasty music supplied by Rockian and others, and dim sims, spring rolls and samosas, many of us left. Thanks John!