Singapore NoiSING 2005 DIY Audio Gathering
Report By Christopher
(High Efficiency Loudspeakers and Tube Gear)
The Topaz room was more crowded than the Pearl
room. This is probably due to the fact that a larger proportion of the DIY
community makes tube gear than solid-state.
The DIY gear brought to the room was
predominately loudspeakers and tube pre and power amplifiers. Over half a
dozen DIY loudspeaker designs were demo-ed at the show, including 2 pairs of
commercial designs for reference. The commercial designs were a pair of Tannoy
dual-concentric and Proac Response 2.5. Three of the DIY loudspeakers were
using various Fostex drivers, obviously a favorite with the local full-range
single driver crowd.
A diminutive and cute floorstanding loudspeaker
using the Fostex FE103 driver.
A back loaded horn design using the Fostex FE
208 and T90A super tweeter based on a Japanese design. Enclosure uses
0.75-inch marine plywood.
A very tall floorstander in stunning cherry
woodwork. It is a TQWP design based on Martin J. King's work using the Fostex
FE16 driver. Due to the popularity of last year's Noising, sponsors came forth
and helped made this show even more successful. Here's a showcase of products
from AHF Art Audio, a local DIY loudspeakers, tube equipment and parts dealer.
For more information please visit
A beautifully veneered floorstanding TQWP
loudspeaker using modified Fostex drivers.
A DIY CD Player using the Philips' top of the
line CDM Pro 2 transport.
Various tube line stage/buffer kits
An assortment of various bits and pieces and
kits AHF Art also carries.
Two bass reflex designs using vintage Coral
Flat 8 and 10 full range loudspeaker drivers. The Flat 10 is the squat looking
one on the right sitting on some funky stool as stands and topped off with the
AMT ribbon tweeter.
A pair of NR 300B monoblock amplifiers with
very professional fit and finish with circuitry that is based on Sun Audio's
300B design (with premium parts throughout).
This pre amplifier has very unique styling,
reminds one of oriental temple rooftops. Uses a WE407A tube with the design
derived from a Taiwanese website.
It looks a lot bigger than the picture shows
and weighs well over 100 lbs! It is a monster version of the Zenlite SE, a
Class A Mosfet amplifier. So much weight and it only generates 12 watts. The
bright tubes on top are bleeding resistors, not vacuum tubes.
A sealed box design using another full range
driver, an Altec 755 woofer.
The vinyl source for most of the demo was a
heavily modified Thorens TD150 turntable.
Even the power strip was DIY-ed too!
A Rotel CD player with many mods to the output
Here is a tube preamplifier made with
exhibition in mind! You can see look into most parts of the pre! It's a single
pre amp with two different line stages using 6SNT and 6J5 tubes.
A single ended tube power amp designed to try
out the GT66, 5881 and 6L6 tubes.
A 18W 6C33 amp called the Simplex. The design
is invented by Mr. Ari Polisois. It has three stages (1 6SN7 and 1 6C33)
directly connected without any capacitors. It also has "hybrid"
SE/PP Output Transformers.
A stunningly beautiful dual mono push-pull
amplifier using the 6C33C-B tube.
This is one of the two beautifully finished
amplifiers brought by a gentleman. Both amps utilizes parts that were spare
bits in his workshop or if bought, the cheapest possible. This one is the EL86
Series Push pull amplifier delivering around 9 watts per channel.
The other amplifier is a 3-watt design using
Mullard EL84 in single end mode with a special 'starved circuitry'.
SilverTone Audio, who has been around quietly
for two years, were designing and manufacturing their own line of Permalloy
Transformers for manufacturers and customization for individual. With the
recent move into main-stream audio market, they were showing their new direct
coupled "Western Electric Parallel-Feed" Single Ended Tube
amplifier. Tube complements featured a 5AR4 rectifier, a 6C45pi input/driver
and a mesh 300B output tubes. It featured a very clever layout design where
the shortest signal path and noise isolation were achieved by sandwiching
three big transformers between two high-grade laser-cut stainless steel
chassis. According to the designer, there are total nine transformers!
Weighing in at 30 kg this is definitely no "lightweight" amplifier.
Visit their cool site here.