
ZKIT2
Zen Triode mono SET amplifier kit

Up to 3 boards can share one
power transformer.
Single-Ended
Triode
Kit
can be used to create:
A stereo amplifier (as shown above)
A pair of mono blocks
A multichannel amplifier for home theater!
You supply the TUBES
and CHASSIS
The Kit comes as shown with proprietary
Decware power and output transformers. Audiophile quality parts are
used throughout, including ceramic tube sockets, 100K level control,
standoffs, binding posts and components by Vishay, Dale, Nichicon,
Sprague ATOM, Solen, and a high quality reversible board designed to
work on a flat piece of wood, or upside down in a steel or aluminum
chassis.
The level
(gain) control can be mounted on either side of the board, as can the
input jack. You can also remote mount either in the chassis and
run shielded cable to the circuit board.
This is a 2 watt mono amplifier configured as
a single ended triode and operating in class A. It uses a
single output tube, EL84 or SV83 and a single input tube, 6922 or
12AU7. The input tube is determined by installing jumpers on the
circuit board shown above.
It features a horizontal AC buss design that
allows you to connect up to 3 boards to one power transformer.

SIZE = 3
INCHES X 9.5 INCHES
Below
are
7
possible configurations:

1) A single power transformer and 1
board for a mono amplifier that could be used for a center channel.
 
2) A pair of power transformers and a
pair of boards for a pair of mono blocks.

3) A single power transformer and a
pair of boards for a stereo amplifier.

4) A single power transformer and
three boards for a 3 channel amp.
 
5) A pair of power transformers and
four boards for a serious 4 channel amp. Note: The AC buss of all 4
boards can ALSO be tied together putting both power transformers
in parallel for even more headroom / which btw, is the only way a 5
channel set up can be wired.

6) A pair of power transformers and
five boards for a 5 channel amp. Each board is 3 inches wide making it
possible to fit 5 of them inside a rack mount chassis as shown. The
power transformers can be mounted either in a separate chassis or in
the same chassis provided there is adequate depth.
 
7) A pair of power transformers and
six boards for a 6 channel amp.
IDEAL SPEAKERS:
We have successfully driven hundreds of
different loudspeakers ranging in efficiency from 90 to 100dB 1w/1m. On
90dB speakers it works nicely in smaller rooms or for late night out of
body experiences. 94 to 96 dB speakers are ideal in that they let you
play beyond a normal listening level and preserve the dynamic headroom.
When the basic Zen Triode Amplifier (that these are designed after) was
first released in 1997 there were a minimal number of "high efficiency"
speakers to choose from. Today that is no longer the case - they are
everywhere. We also offer several different types of loudspeakers that will work with this amp.
SPECIFICATIONS:
This amplifier requires no adjustments
or maintenance other than changing tubes every couple of years. It is a
self biasing design. The SV83 (6P15P-EV) or EL84 output tubes
wired in triode were chosen over 300B, 2A3, 45, and other triodes for
having the better neutrality and speed.
Weight
|
|
10 lbs. ea.
(power
transformer, output transformer and 1 board) Additional boards
with output transformers add aprox 3 lbs per. |
Aprox.
Dimensions |
|
Transformer 4"
x 4" x 4"
Board 2.5" H x 3.00" W x 10.0" D |
Circuit type
|
|
Single ended
Class A
Triode |
Power output
|
|
2.3 watts
RMS into
4 ohms |
Input voltage
|
|
2.0 volts for
full output |
Noise / Hum
|
|
Less
than 1.0
millivolts |
Response
|
|
20 Hz ~ 20 kHz
|
Feedback
|
|
ZERO negative
feedback
used |
Output tubes
|
|
SV83 or
EL84/6BQ5 |
Signal tube
|
|
6N1P or 6922 or
6Dj8 |
Transformers
|
|
Edcor |
Biasing
|
|
Self-Biasing
circuit
- never needs adjustment |
Resistors
|
|
All resistors
are
precision WW/MF by DALE, VISHAY |
Signal Cap
|
|
Poly 1.0 uf 400v |
Consumption
|
|
65 watts at
full power
(2 boards on 1 transformer) |
Output
jacks |
|
5-way
binding
posts accept 14 gauge wire |
Speaker
dB/1w |
|
89
dB
minimum / 96 dB is ideal |
VOLTAGES
This unit comes standard with our World
Voltage Compatible Transformer. It can be wired for 100, 120,
220, 240 V 50/60 Hz.
TUBES:
This amp is designed for premium quality
N.O.S. 6P15P-EV output tubes rated at 5000 hours. These Russian
military spec tubes are the top grade of what we came to know in this
country as the SV83. You can also use EL84's without adjustments of any
kind. You'll find the SV83's to be unparallel in speed and detail
- in part because it is a video tube with much wider bandwidth then a
normal audio tube. We think these are the best sounding most
transparent tubes available today. The EL84 (6BQ5) is a bit warmer
sounding giving the amp a different signature by just switching output
tubes.
The input tube is a single 6N1P, 6922 or 6DJ8
- your choice. 6N1P's have the warmest tone, 6922's have the best
dynamics, 6DJ8's have the most air and micro-detail with a touch less
bass. You can also configure the board for 12AU7 and or a 12AT7.
Again, a powerful tool for voicing your amplifier to your
particular tastes.
WARNING
-
THIS KIT IS FOR EDUCATIONAL PURPOSES ONLY AND CAN
NOT BE USED IN
A RESIDENTIAL HOME WHERE CHILDREN OR PETS CAN COME IN CONTACT WITH THE
HIGH VOLTAGES PRESENT. FOR HOME USE IT MUST BE BUILT INSIDE A
METAL CHASSIS.
|
ASSEMBLY INSTRUCTIONS
SCHEMATIC
You supply your own parts - putting
you in charge of the sound quality and performance.
We recommend
the following power transformers for this amplifier:
120V POWER TRANSFORMER
EDCOR
- XPWR107-120
Power transformer for a 120V, 60Hz. line to 600V (300-0-300) at 150mA
center tapped and 6.3V at 4A.
Aprox cost $58 (JUNE 2011)
240V POWER
TRANSFORMER
EDCOR -
XPWR066-240
Power transformer for a 240V, 50/60Hz.
line to 600V (300-0-300) at 200mA center tapped, 6.3V at 4A and 5V at
3A.
Aprox cost $64 (JUNE 2011)
|
OUTPUT
TRANSFORMERS
EDCOR
- GXSE10-6-8K
10W, single ended tube output transformer for 8K Ohms to 6 Ohms.
Aprox cost $27 (JUNE 2011)
|
SUGGESTED PARTS FOR THIS CIRCUIT BOARD
1
|
Mouser
#: 75-516D108M035-E3
Mfr. #: 516D108M035PS6AE3
Manufacturer: Vishay
Desc.: Aluminum Electrolytic Capacitors - Leaded
1000uF 35volts 20%
RoHS: RoHS Compliant
|
3
|
Mouser
#: 647-TVX2W330MCD
Mfr. #: TVX2W330MCD
Manufacturer: Nichicon
Desc.: Aluminum Electrolytic Capacitors - Leaded
450volts 33uF 18x41 20%
RoHS: RoHS Compliant
|
2
|
Mouser
#: 539-150104J400EC
Mfr. #: 150104J400EC
Manufacturer: Cornell Dubilier
Desc.: Polyester Film Capacitors 400V .1UF METAL POLY
RoHS: RoHS Compliant
|
1
|
Parts
Express #: 027-544
Mfr. #: 3.3uF 400V
Manufacturer: Solen
Desc.: polypropylene capacitors
RoHS: No
|
2
|
Parts
Express #: 055-540
Mfr. #:
Manufacturer:
Desc.: PC mount 9-pin miniature ceramic tube socket.
Gold plated pins.
RoHS: No |
1
|
Parts
Express #: 090-475
Mfr. #:
Manufacturer: Cliff
Desc.: Standard .75" dual binding posts made for
chassis mounting
RoHS: No |
1
|
Mouser
#: 161-4217 or 568-NYS354
Mfr. #: 161-4217
Manufacturer:
Desc.: Phono (RCA) Connectors PHONO R/A PCB
RoHS: No
|
1
|
Mouser
#: 313-1240F-100K
Mfr. #: RV122F-20-15F-A100K
Manufacturer: Alpha (Taiwan)
Desc.: Panel Mount Potentiometers Audio D-Shaft 100K
RoHS: RoHS Compliant
|
1
|
Mouser
#: 262-6.8K-RC
Mfr. #: 262-6.8K-RC
Manufacturer: Xicon
Desc.: Metal Oxide Resistors 6.8Kohms 5% Tol
RoHS: RoHS Compliant
|
1
|
Mouser
#: 71-CW5-1.0K
Mfr. #: CW0051K000JB12
Manufacturer: Vishay
Desc.: Wirewound Resistors - Through Hole 5watts
1Kohms 5%
RoHS: No
|
1
|
Mouser
#: 71-RL20S-G-1.5K/R
Mfr. #: RL20S272GRE5
Manufacturer: Vishay
Desc.: Metal Film Resistors - Through Hole 1/2watt
1.5Kohms 2%
RoHS: No
|
3
|
Mouser
#: 71-RL20S-G-2.7K/R
Mfr. #: RL20S272GRE5
Manufacturer: Vishay
Desc.: Metal Film Resistors - Through Hole 1/2watt
2.7Kohms 2%
RoHS: No
|
1
|
Mouser
#: 280-CR5-10K-RC
Mfr. #: 280-CR5-10K-RC
Manufacturer: Xicon
Desc.: Wirewound Resistors - Through Hole 10Kohms 5%
Tol
RoHS: RoHS Compliant
|
2
|
Mouser
#: 625-RGP10M-E3
Mfr. #: RGP10M-E3/54
Manufacturer: Vishay
Desc.: Diodes (General Purpose, Power, Switching) 1.0
Amp 1000 Volt
RoHS: RoHS Compliant By Exemption
|
1
|
Mouser
#: 71-CP0005300R0JE14
Mfr. #: CP0005300R0JE14
Manufacturer: Vishay
Desc.: Wirewound Resistors - Through Hole 300ohms 5%
5watts
RoHS: RoHS Compliant
|
1
|
Mouser
#: 66-RC20GF473J
Mfr. #: RC20GF473J
Manufacturer: IRC
Desc.: Carbon Composition Resistors 47K OHM 5%
RoHS: RoHS Compliant
|
1
|
Mouser
#: 660-MO2CT631R102J
Mfr. #: MO2CT631R102J
Manufacturer: KOA Speer
Desc.: Metal Oxide Resistors 2W 1K 5%
RoHS: RoHS Compliant
|
6
|
Mouser
#: 561-L41.0
Mfr. #: 561-L41.0
Manufacturer: Eagle Plastic Devices
Desc.: Circuit Board Hardware - PCB SPCR HEX 4-40X1.0
RoHS: RoHS Compliant
|
1
|
Mouser
#: 273-330K-RC
Mfr. #: 273-330K-RC
Manufacturer: Xicon
Desc.: Metal Film Resistors - Through Hole 1/2watt 330Kohms 1%
RoHS: No |
2 |
Mouser
#: 71-RN65D-F-100
Mfr. #: RN65D1000FB14
Manufacturer: Vishay
Desc.: Metal Film Resistors - Through Hole 1/2watt
100ohms 1% 100ppm
RoHS: No |
PRICING
ZKIT2-BO
|
$35.00
|
ADD TO CART
|
Circuit board with NO parts. Board uses Edcor power and output transformers.
|
MADE IN USA
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Decware products are proudly hand made in the USA by High
Fidelity Engineering Co.
Copyright
©
1996
~ 2014 by Steve Deckert
|