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Messages - dragonser

#21
Organs in danger / Re: Slow death
February 01, 2017, 08:38:25 PM
HI,
this cold weather has given me several colds etc so I haven't been online much at all .....
But with the warmer spring weather arriving sometime I hope to be more active....
hopefully it isn't slow death, just hibernation !
regards Peter B
#22
HI,
well I may be wrong, but one problem of trying to emulate the Leslie Cabinet is that the sound is bounced off the room surfaces outside the cabinet...   so to emulate it properly I think you would need more than two speakers.
I think that some of the Hammond Organ clones can get quite close to the sound, and can be useful if you don't want, or are not able to move a full size Hammond about.
regards Peter B
#23
Hi,
after looking up the part number would it be a delay circuit with voltage detector ?
or have I got the wrong IC ?
Is the eeprom used to save/ restore the stop settings ? if so then it is possible that it could have failed ?
or does it have a unique program in it as well ?
regards Peter B
#24
Hi,
I think the Johannus you mention may used a TMS keying Ic to generate the different footages. there may be one per octave, so it could be the circuitry around the ic that might be faulty. [ or possibly the ic itself ].
the cipher may be a bit more complex to find, it is possible that some of the stops an non 16 / 8 / 4 / 2 footages may use a different keying ic [ but still use a TMS keying ic. ].
regards Peter B
#25
Electronic Organs / Re: Ahlborn H5 voice issue
April 07, 2016, 11:00:27 AM
Hi,
I'm guessing that maybe one of the chips associated with the troublesome voice channels may have failed, or partly failed. If the chips are in sockets than changing them should be easy, otherwise you do need to be careful about changing them ....
If the backup battery batteries are nicad then they are known for leaking in a wide range of Musical equipment.
I have seen a mod done to replace the battery, and then connect the battery using flexible wires to keep it away from the circuit board and then have it placed in a plastic bag, so if it does leak it doesn't damage the circuit board.
It would be worth inspecting around any batteries and seeing if you can see any signs of corrosion
regards Peter B
#26
Reed organs and harmoniums / Re: Reed Organ Weekend
March 10, 2016, 05:41:31 PM
Hi,
that is very interesting, thank you for posting about it. [ and giving people plenty of time to make arrangements ].
regards Peter B
#27
Hi,
well I happened to look at the forum again,sorry, I have been busy with non Organ related things , and found that the font size is a bit larger and more readable.
a great improvement, thank you.
regards Peter B
I'm not using a mobile device to look at it ....
#28
Hi,
In case anyone doesn't know there is going to be a Harpsichord Recital at Hammerwood Park
RH19 3QE
01342 850594

. 2pm  13th June 2015
Julian Perkins on two, three or four of the harpsichords at Hammerwood ( but probably not at the same time ! )
provisional Programme

French Suites

Julian Perkins – Harpsichord

Suite no. 2 in C minor, BWV 813 J. S. Bach (1685–1750)
Allemande
Corrente
Sarabande
Air
Menuet I – Menuet II – Menuet I
Gigue

Suite no. 3 in B minor, BWV 814
Allemande
Courante
Sarabande
Anglaise
Menuet – Trio – Menuet
Gigue

Suite in A major, TWV 32:14 G. P. Telemann  (1681–1767)
Allemande
Courante
Sarabande
Anglaise
Menuet – Trio – Menuet
Gigue

INTERVAL

Suite no. 4 in E-flat major, BWV 815 J. S. Bach
Praeludium
Allemande
Corrente
Sarabande
Gavotte – Menuet – Gavotte
Air
Gigue

Suite no. 5 in G major, BWV 816
Allemande
Corrente
Sarabande
Gavotte
Bourrée
Loure
Gigue



As usual, £12 members, £15 non members, Children free and adults bringing children half price.

regards Peter B
#29
Electronic Organs / Re: Help with faulty Johannus
May 08, 2015, 01:00:57 PM
Hi,
as the Organ has a midi output then it would be possible to connect it to another midi device and see if the midi continues when the sounds cut out.
if it does than the fault could be with the amplifier or sound generation circuits.
If there is a fault with the power supply that could stop either part or the whole Organ working.
I guess it depends how familiar you are with electronics as to how easy a fault it might be.
regards Peter B
#30
Hi,
well I think as the two previous posters have said, there is a lot of difference between forums like this one and facebook. I tend to access web pages from my desktop computer, so I can't comment on how this site would work on a mobile phone.
I guess that for some people, the novelty of the internet may be wearing off !
regards Peter B
#31
Electronic Organs / Re: Tuning Johannus Opus 230
March 14, 2015, 10:18:12 PM
Hi,
I will check, I think I have some info here somewhere.
Is it the tuning of the whole Organ that is out ? or just some octaves ?
From what I can remember there may be adjustments for each manual so you would need to be careful which adjustment you move. They may use inductors with adjustable cores to adjust the tuning. If so these need to be adjusted very carefully as it you use the wrong tool you can end up breaking the adjustable core.
I'm not sure if they were designed to be A = 440 hz   ?

regards Peter B
#32
Hi,
just to let you all know that the AES meeting for January is as follows.
Coffee and Tea is normally available. No charge for visitors.
best wishes for everyone for the new year.
Peter B


London: Tuesday 13th January

Perceptual Sound Field Reconstruction and Coherent Synthesis

Zoran Cvetkovic, Professor of Signal Processing at King's College London

Imagine a group of fans cheering their team at the Olympics from a local pub, who want to feel transposed to the arena by experiencing a faithful and convincing auditory perspective of the scene they see on the screen. They hear the punch of the player kicking the ball and are immersed in the atmosphere as if they are watching from the sideline. Alternatively, imagine a small group of classical music aficionados following a broadcast from the Royal Opera at home, who want to have the experience of listening to it from best seats at the opera house. Imagine having finally a surround sound system with room simulators that actually sound like the spaces they are supposed to synthesise, or watching a 3D nature film in a home theatre where the sound closely follows the movements one sees on the screen. Imagine also a video game capable of providing a convincing dynamic auditory perspective that tracks a moving game player and responds to his actions, with virtual objects moving and acoustic environments changing. Finally, place all this in the context of visual technology that is moving firmly in the direction of "3D" capture and rendering, where enhanced spatial accuracy and detail are key features. In this talk we will present a technology that enables all these spatial sound applications using low-count multichannel systems.

This month's lecture is being held at King's College London, Nash Lecture Theatre, K2.31, Strand, London, WC2R 2LS. 6:30pm for 7:00pm start. All welcome. (Click here for further details.)
#33
Hi,
sorry for the short notice, but I have only just received this email
. It is a concert on an Electronic instrument, but a custom design !
regards Peter B

Saturday, November 22nd at 7:30pm

Graham Blyth will present the Organ Recital he was going to play at the recent LA convention in the newly completed Hall at Challow Park, part of the Challow Park Studios complex. This space has an internal volume of just under 30,000 cu.ft (866 cu.m), and a wonderful natural acoustic. The organ is a 4 manual digital of his own design, and plays through 36 channels.

His programme features Bach, Buxtehude, Mendelsson, Saint-Saens & Vierne.

Address: Challow Park, Challow Road, Wantage, OX12 9RH

All welcome.



#34
Hi,
just to let you know that the November AES meeting is as follows.
Date: 11 Nov 2014
Time: 18:30

Location: ROLI Ltd
2 Glebe Road
London E8 4BD

Lecture by Ben Supper, ROLI Ltd.

ROLI created the Seaboard as an evolution of the piano. The Seaboard sets out to endow the traditional piano keyboard with far greater powers of musical expression, without alienating existing musicians.

What is involved in producing such a musical instrument? In developing the Seaboard, ROLI has had to overcome several classes of problems. There are organisational difficulties: to build and mature a design and manufacturing company from scratch, and to reconcile the ambition of a nascent company with the realities of its capability. Alongside this are several classes of technical problems: to develop and refine new technologies; to find new materials and to learn to manufacture with them, and to bend the aged MIDI specification to handle more expressive information. There are social aspects to this task, too: ROLI has formed partnerships with synthesiser manufacturers, working groups, and industry pioneers to shape the Seaboard and provide it with an infrastructure of support.

This lecture picks out a few of these challenges, providing a perspective on how a new company sets out to innovate within the music industry.

no charge for the lecture, Tea and Coffee available.
more details
http://www.aes-uk.org/meetings/forthcoming-meetings/

regards Peter B
#35
Hi,
just to let you know that the next AES meeting is being held at City University  on October the 14th.  6-30 pm
a description follows
This month's lecture will showcase cutting edge research from City University's Music Informatics Research group and King's College London's Centre for Telecommunications Research. The evening will include a drinks reception a selection of technology-based creative works from the Music Department at City.
http://www.aes-uk.org/meetings/forthcoming-meetings/
anyone welcome !

there is also a Lecture in Birmingham, in November as well ( see above web site for details )

regardsPeter B
#36
Hi,
It even has the following stops.  Rossignol (bird chirp)  , Clochettes (20 little bells)  Accouplement G.O./Pos.  Tirasse G.O.
I would think you would have to sell more than two kidneys to buy it !
I guess when a pipe Organ is that large it reduces the amount of places that it could fit into.
regards Peter B
#37
Organs wanted / Re: Pipe Organ for DT Project
June 19, 2014, 01:19:37 PM
Hi,
I wonder if it would be possible to obtain a Harmonium / Reed Organ and then renovate this instrument. I would think that some of the techniques such as woodwork, felt, releathering would be in common with a Pipe Organ ?
there is also the tuning and regulation of the Reeds which might actually be more complex than Tuning a Pipe Organ.
the Logistics of moving a Harmonium / Reed Organ is probably easier than moving a Pipe Organ ?
But I stand to be corrected !

regards Peter B
#38
Hi,
I won't suggest using perspex ( acrylic ) or a simlar material as I think it is difficult to work with ?
Wood and Metal do seem to have advantages here and can at least be painted.
I have also heard ( I think ) of plastic pipes being used where there was the problem of the lead pipes being stolen.
regardsPeter B
#39
Hi, on ebay a Thomas casson Organ
to someone who is a beginner with regard to Pipe Organs it looks nice.
eBay item number:
251550370352

regards Peter B
#40
Hi,
for those who like to have more notice of meetings, the July talk in Hoburn London is on the 8th of July 2014.
location
WSP Holborn
70 Chancery Lane
London

Lecture by Trevor Cox, University of Salford.
Joint lecture between the AES and IOA.
6.00 pm IOA AGM (All Welcome) / 6.30 pm Evening Presentation

Sonic Wonderland is a popular science book about the most remarkable sounds in the world. In this talk, Trevor will look at some of the detailed acoustic science behind a few of the wonders, picking examples that required first hand research by himself. It will begin by solving the mystery of Echo Bridge, something that first appeared in the Journal of Acoustical Society of America in the 1940s. Trevor will present measurements that he made at the badly tuned musical road in California. To finish, he will look at the detailed acoustic properties of the world's 'longest echo', and explain why the record isn't for the longest reverberation time.


regards Peter B