| EK
JAPAN CO., LTD
15th
Anniversary of Foundation
日本ELEKIT成立15週年
Limited Model
/ NOV 2009
* 參考資料 : 日本KIT SET定價為88,200日元、砌機收費26,250日元，需時30日，不包括運費。
限量成品，即日接受預定，2009年11月份推出。
TU-875 / 879 / 882AS / 884CD / 881CD 等已登記行貨用家優先發貨。
TU-8300
300B SINGLE STEREO POWER AMPLIFIER“TU-LAB”
A single stereo power amplifier with 300B tubes, the
most popular tube, which is designed so that tube amplifier
fans can work over it on their own after assembly.
Find your favorite combination of tubes, output transformers
(OPT), volumes, etc, and enjoy this experimental TU-LAB!
300B
單端真空管立體聲放大器
全球首部300B同時兼容KT88(6550)、KT66、 EL34(6CA7)、6L6GC等真空管，自動偏壓，無需開機蓋。
Experimental
amplifier for audiophiles !!
Triode
connection of pentode also available!
Triode-connected
pentode and beam tube have equal qualification and attraction
as 300B. In this TU-LAB, 8 pin sockets are equipped, which
enables triode connection of such tubes as KT88(6550),
KT66, EL34(6CA7), 6L6GC, etc, without any modifications
to the amplifier.
 
Try
different OPT and volumes!
A slide universal bracket, or in other words “magical
bracket” , that enables various kinds of OPTs in various
shapes to be installed, is developed for TU-LAB so that
most of commercially-available OPTs for 300B single amplifier
can be used.
Full
of ingenuity for high quality sound, stability, safety,
and energy-saving
[“Constant current circuit, self-bias + fixed bias” method]
Constant current circuit is adopted instead of cathode
resistors of self-bias method so that a constant plate
current flows no matter what tubes in our assumption are
used. (rated currency value can be fine-adjusted.
[Power shut-down circuit for OPT upon over-current]
If over-current occurs in either of the OPTs even for
one second, the B power supply is shut down and LED indicator
at the troubled side shows that there took place a malfuction.
[FET ripple filer]
FET ripple filter, time-proven in the performance of
the reduction of ham noise is adopted for the B power
supply.
[All tubes heated by AC]
From ecological point of view, all tubes are heated by
AC power so that the power loss in the rectifying circuit
is improved and heating is moderated.
World-wide
power transformer
Upon request for se under 200V environment or oversea
countries, a multi power transformer that can be used
under 4 different power voltage environments, such as
100V, 115V, 200V, and 230V (Select the setting location
of the corresponding connector upon assembly.)
【Specifications】
- Tubes:
300Bx2, 12AT7x2 (No tubes for replacement included)
- Max.
output: 8W+8W (by default, with 300B tubes
and 8Ω of load applied)
-
Frequency response(-3dB): 15Hz~40kHz
-
Residual noise (IEC filtering): 0.5mV (0.1,V
when KT88 installed)
-
Input sensitibity: 200mV (DF：6.3 Speaker:
4~16Ω)
-
Output terminal : Gold-plated, binding post
(bare wires up to Φ5mm can be inserted, and banana
plugs can also be used.)
-
Input terminal : Gold-plated RCA jack, single
stereo line (at the back)
-
Power input : 3P inlet (IEC320)
-
Power voltage : 220V ~ 240V 50/60Hz available.
Change the soldering location of the connector for power
transformer as shown in the photo below.
-
Power consumption: 80W by standard (70W~95W
as ip is fine-adjustable.)
-
Dimension: W400xH213xD250 mm (Chassis with
the punched metal cover, protrusion not included.)
-
Weight: 10.8kg (fully assembled, without a
power cable)
-
ip adjustment range: Approx. 50~80mA (L,R independently
adjusted) Ham balancer function equipped A microcomputer
is adopted for TU-LAB, for the first time to our TU
series amplifier (warming-up timer <delay in B power
supply>, cathode voltage monitoring, automatic shut
down of B power supply upon malfunction)
OPTs
(Output Transformers):
|
