A very
colorful figure of the Istanbul Hi-Fi
circles, Deger Terem happens to be the
only professional manufacturer working in
the field of Hi-End Audio in Turkey. His
main specialties are tube power and
preamps but he also builds speakers. The
name of his company is D&B Lab. He is
in a sense the "Luthier of the Reproduced
Music".
"My Friends" who are using D&B Lab
products are the followings (do click and
visit their pages for more details):
Sedat
Mirkelam, Kamil
Sukun, Faruk
Eczacibasi, Tuncel
Gulsoy
I visited his workshop on 25 November
2000 and was truly impressed by its
tidiness and coziness. Click the
thumbnails to enlarge and see for
yourself. He is currently working on two
projects: a preamplifier that he is about
to finish and a new speaker of which he
has completed one of the pair (see the
bottom picture on the left).
Here is the summary
of his biography:
Deger
Terem was born on 1939 in Istanbul. On
1955 when he was in high school his
parents bought him a turntable. In order
to better complement his new turntable and
get a better sound from his system, Deger
dismantled the old receiver and built a
tube amp with the help of a schematic that
he had found in an American electronic
magazine. The result was so successful
that he then decided to make it a
profession. Years later he graduated from
Istanbul Technical University as
electronic engineer.
In
1956 he formed a jazz group and toured
with them for three years and gave
concerts. Following the group's break-up
he composed a "Concerto for Tenor
Saxophone and Orchestra" and a "Concertino
for Trombone and String Orchestra" (both
works are unfinished). The famous Turkish
classical composer, Cemal Resit Rey had
reviewed both of his compositions,
transcribed and played them on piano.
Liking them very much he encouraged Deger
to finish both compositions and to perform
them. But later his professional
occupation kept his so busy that he could
not spare any time for them.
After
completing his military service, in 1970
he founded D&B Electronic Laboratory
(used as D&B Lab. in logo format) in
partnership with his friend Batur Pere
(D&B stands for Deger & Batur) and
started to build high quality tube amps
and speakers. Shortly after Batur Pere
left the company, but as this was an
amicable split Deger did not want to
change the company's initial
name.
In
1980's Deger wrote more than ten articles
for American and British electronic
magazines. He has got 20 patented
amplifier circuits of his own as well as 6
passive and 2 active crossover network
circuits.
Deger
Terem is married with the painter Ulku
Terem since 30 years; they have one son
who also became electronic engineer and
now builds computers.
Deger, what is your design
philosophy?
a) My main concern is reliability. Most
of the time I oversize components in order
to extend their life expectancies. I
select the operating voltages of the tubes
with the aim of extending their life. Of
course, this attitude adversely affects
the cost of the components. An amplifier
that I built in 1981, which worked 6 days
of the week, 10 hours a day was recently
brought back for servicing. I measured the
tubes and was shocked to notice that all
tubes were in perfect condition. The
customer said that they were very happy
with the amplifier but after so many hours
of operation they assumed that something
must have been replaced. I cleaned its
dust and just sent it back.
b) I try to use, as much as possible,
locally available components.
c) I aim to make sound my amps better
than their direct competitors. I think I
succeeded to achieve this during the last
six years. On many direct comparisons the
audience have voted in favor of my amps.
The same is also valid for my preamps.
d) In tube amps Output Transformer is
the brain and the mains transformer is its
heart. I try not to make any sort of
compromises on these components. I use
special alloy wires. Cost is no object
here; my main purpose is not to make money
but to make my amps sound good. The wires
that are composed of 50% gold and 7 %
silver are two million times more
expensive than the normal copper wire, but
their sonic differences are so big that I
don't hesitate using the expensive
solution. Such good results are giving me
extreme satisfaction. Mains transformer is
also very important. My designs draw 10
thousand times less idle current than the
competition.
I try to go to concerts very often and
try to get as close as possible to the
sounds I hear during such concerts. For 46
years I have worked very hard to achieve
improvements in this area.
The music genres that you
like?
I have listened to jazz music since the
age of 6. But after 1970's jazz got
spoiled. I don't like its derivatives such
as pop-jazz, rock-jazz or free-jazz. When
I was 18, a girl friend of mine gave me
the LP of Brahms' Piano Concerto No.1. It
was performed by Wilhelm Kempff and
Dresden PO. I went home and started to
listen. I probably listened 20 times until
the morning. Since then I have begun
listening to classical and eventually even
more than jazz. Later on I started to
listen to chamber music more than the
orchestral.
How much do you think you achieved
your goals?
I have various goals. But I can easily
state that I achieved 98% of my
professional goals, of course this does
not mean that I made money. I don't know
why but making money has always had a
secondary importance for me. I'm happy to
have achieved the 98% because I know that
I will never reach the remaining 2%. As
I'm a perfectionist, whatever I do there
will always be an unreachable 2%. I should
also mention the importance of the very
great support of my music and Hi-Fi lover
wife.
Why always tube, nothing but
tubes?
This is a very elaborate subject. Home
Electronics magazine will start to publish
my article in December 2000 issue. I guess
it will last 5 or 6 issues.
Your favorite manufacturers?
Turntable:
|
Michell Gyrodec, Alfason
100
|
Tone arm:
|
Grace 707
|
Cartridge:
|
Van den Hul MC-1
|
CD Player:
|
California Audio Lab, Onkyo
DX7711
|
Speaker:
|
Thiel 7, Snell A-3
|
Tuner:
|
Parasound Audio lab
|
Preamp:
|
Paragon (tube), Electro
Research (ss)
|
Power Amp:
|
Michaelson & Austin VAC 7B
(tube), Electrocompaniet (ss)
|
What do you think about the future
of High-End Audio?
I sincerely think that as long as there
will be good music and music lovers Hi-End
Audio will survive. Music lovers will
always want to get as close as possible to
the live performance in their home
environment. There will be people who will
make do with things like MP3's or home
theater systems, like they exist today,
but the genuin audio lover will
not.
D&B Lab.
Products
Preamps:
P-12 Phono
|
7 tubes, and separate power
supply module
|
P-12 Line
|
4 tubes, and separate power
supply module
|
P-15
|
Uses special "anti-jitter"
type tube. This model has no
phono version
|
P-17
|
This is a very versatile
preamp which has:
- subwoofer out
- center channel out
- 200 ohm, 10Kohm fixed and
20Kohm variable outs
- phono MM & MC, CD, tuner,
line1 and 2 inputs
It has 12 tubes and a separate
power supply module with 2 more
tubes.
|
Power
Amps:
SM-265
|
2 x 65W RMS, full class A,
stereo
|
4 x EL34 + 6 x ECC83
|
M-80
|
80W RMS, full class A,
mono
|
2 x EL37 + 2 x E83CC
|
M-150
|
150W RMS, full class A,
mono
|
4 x EL37 + 3 x E88CC + 3 x
E83CC
|
M-250
|
250W RMS, class A up to 150W
then AB2, mono
|
8 x EL35B + 2 x ECC81 + 2 x
E88CC + 6 x ECC803S
|
Speakers
Reference A-1 "Monitor"
|
2-way
|
34 (h) x 19 (w) x 28 (d)
cm
|
Reference A-2 "Studio"
|
2-way
|
87 x 21 x 33
|
Raference A-3 "Orchestra"
|
3-way Transmission Line
|
99 x 23 x 40
|
Reference A-4 "Grand
Orchestra"
|
4-way Transmission Line
|
128 x 26 x 51
|
You may reach Deger Terem
by:
e-mail:
degerterem@mynet.com
web site:
www.vocalese.com
Phones:
+90-216-368 73
23
+90-216-368 56 40
+90-532-293 06 31
Address:
Ataturk
caddesi, Ata Apt. No. 63, D:26,
Sahrayicedid,
Erenkoy, Istanbul
|