Hagerman Technology Cymbal User manual

HAGERMAN
T E C H N O L O G Y
Cymbal
8 Watt Monoblock Amplifier

Cymbal Monoblock Kit Manual
2
Warnings
This product uses dangerous and potentially lethal voltages. Extreme care must be taken
while assembling this amplifier and should only be attempted by a skilled technician.
The instructions in this manual are a suggested guide only and no liability is assumed by
Hagerman Technology LLC.
Copyrights & Trademarks
©Copyright Hagerman Technology LLC 2004. All rights reserved. No part of this
document may be photocopied, reproduced, or translated to another language without the
prior written consent of Hagerman Technology LLC.
Disclaimer
The information contained in this document is subject to change without notice.
Hagerman Technology LLC shall not be liable for errors contained herein or for
consequential damages in connection with the furnishing, performance, or use of this
material. See Chapter 6 for warranty information.

Cymbal Monoblock Kit Manual
3
1 Before You Begin
Description
Congratulations! You have just purchased one of the highest performance-per-dollar
audiophile products available. The Cymbal monoblock amplifier is intended to bring
high-end audio and construction quality into the hands of do-it-yourselfers. It is part of a
line of vacuum tube products based on a common chassis and circuit board architecture.
The design is optimized for both ease of assembly and sonic excellence.
Circuit topology is the classic push/pull output driven by a fully balanced differential
input/driver stage. Both stages operate in class-A and use no negative feedback.
Designed around the ultra-linear 6H30 supertube, this unique amplifier is optimized for
sonics rather than raw power. Its exceptionally low output impedance retains powerful
and clean bass without sacrificing a SET-like midrange. The monoblocks are built in
mirror-image pairs (left channel shown on cover). A second input offers capacitive
coupling and can be designed to set a specific high-pass turnover frequency for systems
operating with a subwoofer.
The half-kit consists of these instructions, blank circuit boards, and 1:1 drill guides. You
must purchase the remaining components from DigiKey, Antique Electronic Supply;
New Sensor, and Lansing Instruments. You may also substitute parts from your own
stock.
Features
• All vacuum-tube signal path
• Pure class-A amplifier stages
• No feedback
• Fully balanced differential input stage with ground lift
• Vacuum tube B+ rectification with choke regulation
Tools
This is a kit product and construction should only be attempted by skilled electronic
technicians. Chassis metalworking is also required. You will need an array of shop tools
and a good soldering iron. If you are at all unsure of this, send it back!

Cymbal Monoblock Kit Manual
4
2 Parts to Buy
Kit
If you purchased factory assembled Cymbals, skip to Chapter 5. The kit does not need to
be built as specified, part substitutions or upgrades can be made at your discretion. It is
recommended you read this entire manual before starting.
Modifications
Here are a few simple modifications and upgrades possible to customize your unit.
 Upgrade signal capacitors to “auricap” brand: Change C8 to AES #CAUD1-450.
Change C7 and C15 to AES #CAUD47-450.
 Upgrade to gold plated RCA jack: Change J1 to AES #S-H267W.
 Change chassis anodize color from clear to black: Use Lansing #B2H12-V01B.
 Bolt both chassis together side-by-side for a 19” rackmount fit using four #KCOUP
bolts from Lansing.
 For testing, it is handy to buy a #8.2W-10-ND power resistor from DigiKey..
You can also run this amplifier with a balanced input connector (DigiKey #SC1009).
Connect pin 1 to ground, pin 2 to positive, and pin 3 to negative input (lifted ground).
Set LIFT switch to open or do not install.
Parts List
Parts should be ordered directly from www.digikey.com, www.tubesandmore.com
(AES), www.sovtek.com (New Sensor), and www.lansing-enclosures.com. The parts
lists on the following pages are for one amplifier, quantities must be doubled for a pair.

Cymbal Monoblock Kit Manual
5
Component Qty DigiKey References
100uF 350V 4 493-1442-ND C3, C4, C9, C14
220uF 16V 1 493-1284-ND C10
100nF 50V 2 EF1104-ND C6L, C6R
1uF 400V 4 PF4105-ND C12, C13, C22, C23
470nF 400V 2 PF4474-ND C7, C15
100nF 400V 1 PF4104-ND C8
10nF 2kV 3 P11423CT-ND C1, C2, C5
1N4148 2 1N4148FS-ND D1, D2
LED R/G 1 160-1715-ND D3
Power Cord 1 Q120-ND
Grommet 10* RP456-ND
Feet 4 SJ5523-0-ND
Standoff #4 x 1 10* 4806K-ND
Nylon Spacer 10* 1457AK-ND
Fuse 2 F2419-ND
Dome, LED 1 L30032-ND
Grounding Post 1 J587-ND
RCA Jack 1 CP-1435-ND J1
AC Input 1 CCM1647-ND
Fuse Holder 1 WK0011-ND F1
Terminal 30* 1285K-ND
Crimp 30* A27804-ND
Switch 1 EG1903-ND S1
Heat Sink 4 HS372-ND
2N3904 2 2N3904FS-ND Q3, Q4
2N3906 2 2N3906FS-ND Q1, Q2
Pot, 100k 1 3386P-104-ND R28
1.0 1/2W 5* 1.0H-ND R23, R35
22 1/2W 10 22H-ND R11, R13, R17, R19, R26, R27, R38,
R41, R43, R44
220 1/2W 15* 220H-ND R5, R12, R15, R16, R18, R20, R36,
R37, R39, R40, R42
2.2k 1/2W 5 2.2KH-ND R7, R8, R29, R31
10k 1/2W 5* 10KH-ND R2, R6
22k 1/2W 5* 22KH-ND R21, R33
47k 1/2W 5* 47KH-ND R22, R25, R30, R34
1.3k 2W 2 P1.3KW-2BK-ND R9, R46
220k 2W 1 P220KW-2BK-ND R4
220 3W 2 P220W-3BK-ND R24, R32
330 3W 2 P330W-3BK-ND R1, R3
4.7k 5W 2 ALSR5F-4.7K-ND R10, R45

Cymbal Monoblock Kit Manual
6
Component Qty AES References
Wire 2 S-WS16
Binding Post 1 S-H263 J3
Socket, 8-pin 1 P-ST8-193G V1
Socket, 9-pin 5 P-ST9-214G V2, V3, V4, V5, V6
Tranny, Power 1 P-T370FX T1
Tranny, Output 1 P-T1615 T2
Choke 1 P-T158Q L1
5AR4 1 5AR4
Screw #10 2* P-H245
Nut #10 2* S-HHN1032
Washer #10 2* S-HLW10
Screw #4 3* S-HS440-14
Nut #4 2* S-HHN440
Lug 1* S-H112
Component Qty New Sensor References
6H30 5 6H30pi
Component Qty Lansing References
Chassis 1 B2H12-V01A
* Minimum purchased quantity.

Cymbal Monoblock Kit Manual
7
3 Assembly
Chassis
The instructions below refer specifically to the Lansing Instruments’ enclosure. Follow
these step-by-step instructions to machine the chassis pieces. If you plan to use upgraded
RCA jacks or other controls, some mounting holes will not be the same as those specified
on the drill guides; they need to be lowered to prevent interference with the circuit board.
The monoblocks are built in mirror-image pairs. The top cover drill guide is drawn for
the left channel. Flip over to use for right side. The LED dome and output binding posts
are on the left for the left channel (front view), and vice-versa. Ground jack goes on
RCA jack input side.
 Use a scissor to notch out the four alignment holes in the printed drill guide.
 Place the drill guide on top of a blank top cover; align so the mounting holes are
centered in the crosshairs. Use a metal punch (sharp nail) to mark the center of
each hole.
 Cut out the rear panel drill guides using a straight edge and razor blade. Mark
hole centers and outline of ac input cutout.
 Carefully drill holes on top cover, front and rear panels. Large holes are best
done using punches, but a step-drill also works fine. A file may be needed to get
a clean rectangular cutout on the rear panel.
 Wash with dishsoap to remove fingerprints and grime.
Circuit Board
Assemble in the following order, solder and clip leads before continuing. Not every spot
on the circuit board is populated. Many parts are marked either “L” or “R” to indicate
channel. Only those parts needed per channel are used, refer to schematic.
 Solder sockets onto the backside of circuit board. Insure rotation of octal socket
is correct (see dimple). Only one driver tube V2 is used.
 Add six standoffs to bottom of circuit board using #4 nuts.
 Add four grommets.
 Install quick release terminals (for transformer wiring).
 Install all resistors and potentiometer.
 Install diodes and transistors.
 Install all capacitors.

Cymbal Monoblock Kit Manual
8
 Install fuse holder.
 Install RCA jacks and ground lift switch.
 Install inductor using #6 screws and short nylon spacers.
 Install heat sink shields near RCA connectors and transformer wiring. These are
used only for shielding purposes.
 Install LED onto backside of circuit board. Keep leads as long as possible (about
one inch). Tab on side labeled “*”.
 Optionally soak and brush assembly in 99% isopropyl alcohol to remove solder
flux residue. Blow dry.
Completed circuit board (left channel).

Cymbal Monoblock Kit Manual
9
Integration
If built properly, everything should fit together like a glove. The chassis anodization acts
as an electrical insulator. Make sure to scrape down to bare metal under the chassis
screws to insure complete Earthing of all panels.
 Install rubber grommets to top cover.
 Install LED window to top cover.
 Mount transformers to top cover using the #10 hardware with ac primary and
output secondary wires towards outside.
 Mount circuit board assembly to top cover, routing transformer wires through
grommets.
 Cut length of transformer wires to 5 inches above circuit board. Save the scraps!
 Add crimp terminals to all of the power transformer wires.
 Plug in the transformer wires to the terminals on the circuit board. Use the
silkscreened chart for proper voltage selection.
 Add crimp terminals to both ends of scrap wires colored brown, blue, and
brown/yellow.
 Add crimp terminals to one end of scrap wires colored green and green/yellow.
 Solder both open ends of the green and green/yellow wires to the eyelet lug.
 Install the ground jack to rear panel with above eyelet lug secured under the nut.
 Install ac input connector.
 Connect the brown/yellow wire from the L terminal to a switch terminal. Connect
the brown wire to the other switch terminal. Connect the blue wire to the N
terminal, and the green/yellow wire to the E terminal.
 Connect L (brown), N (blue), and E (green) wires from rear panel to terminals on
circuit board.
 Secure rear panel to assembly using a #4 screws on the RCA jack.
 Add chassis side panels.
 Solder output transformer primary wires into the color labeled holes. Solder the
secondary wires into the “G”, “S”, “O”, and “H” holes per impedance chart.
 Solder approximately 16 inches of output speaker wire to the “G” and “H” holes.
Lightly twist and solder to the rear panel binding posts. Insure the “G” wire
connects to the black post.
 Install front panel.
 Add fuse.
 Install vacuum tubes
 Add feet to bottom cover. Do not install until after testing.

Cymbal Monoblock Kit Manual
10
Completed assembly (left channel).