Download TRUMPET Vacuum Tube MM Phonostage

TRUMPET
Vacuum Tube MM Phonostage
Made in USA
TRUMPET Vacuum Tube MM Phonostage
2
Copyrights & Trademarks
© Copyright Hagerman Audio Labs 2012. All rights reserved. No part of this
document may be photocopied, reproduced, or translated to another language
without the prior written consent.
Disclaimer
The information contained in this document is subject to change without notice.
Hagerman Audio Labs shall not be liable for errors contained herein or for
consequential damages in connection with the furnishing, performance, or use of this
material.
Warranty
Hagerman Audio Labs warrants this product free of defects in materials and
workmanship for a period of 10 years (90 days on tubes). If you discover a defect,
Hagerman Audio Labs will, at its option, repair or replace the product at no charge to
you provided you return it during the warranty period, transportation charges
prepaid to Hagerman Audio Labs. This warranty does not apply if the product has
been damaged by negligence, accident, abuse or misuse or misapplication, has been
damaged because it has been improperly connected to other equipment or has been
modified without the express written permission of Hagerman Audio Labs. This
warranty is limited to the replacement or repair of this product and not to damage to
equipment of other manufacturers. Any applicable implied warranties, including
warranty of merchantability, are limited in duration to a period of the express
warranty as provided herein beginning with the original date of purchase and no
warranties, whether express or implied shall apply to the product thereafter. Under
no circumstances shall Hagerman Audio Labs be liable for any loss, direct, indirect,
incidental, special, or consequential damage arising out of or in connection with the
use of this product.
Hagerman Audio Labs
PO Box 61911
Honolulu, HI 96839
808-383-2704 (voice)
www.haglabs.com
TRUMPET Vacuum Tube MM Phonostage
3
Description
The Trumpet is a state-of-the-art MM phonostage that uses balanced feedback-free
differential triode gain stages and passive equalization. This topology offers
incredible linearity and low distortion combined with unrestricted dynamics and
clarity, delivering a hugely open and clear sound. The massive power supply is fully
choke regulated for clean, impulse-free current draw from the ac line. The Trumpet
has earned Stereophile class “A” recommendation and industry acclaim.
Specifications
Item
Gain
Input Impedance
Output Impedance
RIAA Response
Bandwidth
Distortion
Noise
Overload
Size
Power
Tube Compliment
Specification
44dB
47k ohm
750 ohm
+/-0.5dB from 20Hz to 20kHz
5Hz to 250kHz
0.03% @1kHz
80dB ref 5mV A-weighted
250mV @1kHz
7” x 12” x 10”
120Vac, 70W
12AX7 x 4, 12AU7 x 4
TRUMPET Vacuum Tube MM Phonostage
4
Operation
The Trumpet installs between your turntable and linestage. Be sure to connect the
ground lead to the grounding lug near the inputs.
Do NOT operate unit without tubes installed. Connect the power cord to a 120Vac
source. Turn on the Heater switch and wait for 30 to 60 seconds. Then turn on the
high voltage. The indicator lamp will turn green. The Trumpet requires about 30
minutes to warm up and sound its best, which is typical of high quality tube
equipment. Set both Mute/Polarity switches to the right (or left for inverted signal).
Center position is mute.
Tube Rolling
The Trumpet responds admirably to tube rolling. New old stock (NOS) tubes are
generally the best, offering various sonic improvements. Different tubes sound
differently, and the final result becomes a matter of personal taste.
Always replace tubes with their equivalents! Do not use, for example, a 12AT7 in one
of the 12AX7 locations. Starting from the rear of the unit (near RCA jacks), the tubes
are in order: 12AX7, 12AX7, 12AU7, and 12AU7. It is best to use matched tubes in
matched left-right pairs.
TRUMPET Vacuum Tube MM Phonostage
5
1
2
3
4
5
120Vac
Windings must be in phase!
1A
F1
S2
Heaters
C99
10nF
1kV
T1
273DZ
B
6V3ct
5V0ct
700Vct
R13
220
R12
220
C7
10nF
1kV
R5
6k8
S1
HighVoltage
A
B
This document contains proprietary information and except with written permission
of Hagerman Technology LLC such information shall not be published, or disclosed to
others, or used for any purpose, and the document shall not be copied in whole or in
part. Copyright Hagerman Technology LLC 2006.
All rights reserved.
All resistors are 1W unless specified.
Notes:
3
2
1
AC
J2
A
C
C
UF5400
UF5400
D10
D9
UF5400
UF5400
D8
D7
UF4007
UF4007
D6
D5
UF4007
UF4007
D2
D1
C50
0.22uF
50V
10
2W
D
C8
100uF
25V
10H
205
L5
3mH
2x0R3
100
2W
R9
R8
C2
100uF
450V
100
2W
R2
C5
100uF
450V
L3
10H
205
L1
C4
100n
600V
C1
100nF
600V
10
2W
R1
D
C9
40mF
4x10V
10H
205
L4
10H
205
L2
1R1
9x2W
R11
E
6V2 @ 2A4
C6
100uF
450V
Red
Green
D3
300V @ 39mA
C3
100uF
450V
E
330
2W
R10
1N4148
680
330
2W
R6
J1
6
5
4
3
2
1
-300V
Gnd
Heater
Heater
Gnd
+300V
Date:
Size
F
Tuesday, June 27, 2006
n/a
Document Number
Sheet
Gold Trumpet: Power Supply
Title
P.O. Box 26437
Honolulu, HI 96825
Hagerman Technology LLC
R7
50k
2x5W
R4
50k
2x5W
R3
F
1
G
G
of
4
A
Rev
1
2
3
4
5
1
2
3
4
5
1
F2
-280V
R23
47k
10uF
250V
75k
2x1W
C14
R24
220
R39
220
R22
B
2
75k
2x1W
R30
7
1
3
8
6
+6V3
C22
20mF
2x10V
R44
150k
1
6
5
4
3
2
A
B
C
220nF
400V
220
J7
C16
R33
6k8
C12
47nF
630V
220nF
400V
C11
C
R41
V1B
ECC83
1N4148
D12
220
R19
V1A
ECC83
R17
150k
1mA
+280V
140V
+280V
This document contains proprietary information and except with written permission
of Hagerman Technology LLC such information shall not be published, or disclosed to
others, or used for any purpose, and the document shall not be copied in whole or in
part. Copyright Hagerman Technology LLC 2001.
All rights reserved.
All resistors 1W unles specified.
RIAA is 37.5k & 2nF, 29.8k & 3.3k & 94nF.
Notes:
2
J4
Input
A
R34
150k
-280V
R25
150k
C23
100uF
450V
C18
100uF
450V
10uF
250V
75k
2x1W
C15
R26
220
R42
220
R20
C24
1uF
400V
C19
1uF
400V
33mA
2
75k
2x1W
R31
7
1
3
8
6
D
-300V
+300V
220
R15
R50
300k
R49
300k
R47
150k
2k2
R51
2k2
R48
+280V
C25
100uF
450V
C20
100uF
450V
E
-280V
C26
1uF
400V
C21
1uF
400V
220
220
R40
220
8mA
R98
1M
220
R21
220
R16
R46
R35
3k3
C13
1nF
630V
E
R45
V2B
ECC83
1N4148
D13
V2A
ECC83
R14
150k
1mA
+280V
140V
+280V
D
8
6
8
6
2
2
1N4148
D14
1uF
400V
C17
1uF
400V
C10
R37
1M
R28
1M
Date:
Size
F
Tuesday, June 27, 2006
n/a
Document Number
Sheet
Gold Trumpet: Amplifier Left
Title
P.O. Box 26437
Honolulu, HI 96825
2
S4
Polarity/Mute
Hagerman Technology LLC
V3B
ECC82
220
R43
V4B
ECC82
R36
50k
2x5W
1N4148
D11
220
V4A
ECC82
R18
V3A
ECC82
R27
50k
2x5W
6mA
+300V
1
3
1
3
-300V
7
7
150V
+300V
F
G
G
of
R38
1M
R29
1M
2
4
1
A
Rev
J3
Output
1
2
3
4
5
1
2
3
4
5
2
F3
-280V
R61
47k
10uF
250V
75k
2x1W
C31
R62
220
R77
220
R60
B
2
75k
2x1W
R68
7
1
3
8
6
R82
150k
220nF
400V
220
A
B
C
C33
C29
47nF
630V
R71
6k8
220nF
400V
C28
C
R79
V5B
ECC83
1N4148
D16
220
R57
V5A
ECC83
R55
150k
1mA
+280V
150V
+280V
This document contains proprietary information and except with written permission
of Hagerman Technology LLC such information shall not be published, or disclosed to
others, or used for any purpose, and the document shall not be copied in whole or in
part. Copyright Hagerman Technology LLC 2001.
All rights reserved.
1
J9
Input
A
R72
150k
-280V
R63
150k
10uF
250V
75k
2x1W
C32
R64
220
R80
220
R58
2
75k
2x1W
R69
7
1
3
8
6
D
220
R53
R85
150k
E
220
220
R78
220
R99
1M
220
R59
220
R54
R84
C30
1nF
630V
R73
3k3
E
R83
V6B
ECC83
1N4148
D17
V6A
ECC83
R52
150k
1mA
+280V
150V
+280V
D
8
6
8
6
2
2
1N4148
D18
1uF
400V
C34
1uF
400V
C27
R75
1M
R66
1M
Date:
Size
F
Tuesday, June 27, 2006
n/a
Document Number
Sheet
Gold Trumpet: Amplifier Right
Title
P.O. Box 26437
Honolulu, HI 96825
3
S6
Polarity/Mute
Hagerman Technology LLC
V7B
ECC82
220
R81
V8B
ECC82
R74
50k
2x5W
1N4148
D15
220
V8A
ECC82
R56
V7A
ECC82
R65
50k
2x5W
6mA
+300V
1
3
1
3
-300V
7
7
+300V
F
G
G
of
R76
1M
R67
1M
2
4
1
A
Rev
J8
Output
1
2
3
4
5