HK tube 50 schematic

GD/ 18.11. 99

SERVICE DOCUMENTATION

Tube 50

GD/ 18.11. 99

Inhaltsverzeichnis/ Contents

1 Schaltpläne/ schematic diagrams

2 Bestückungspläne/ component parts

3 Bestellnummern/ order no.

4 Bestellinformationen/ ordering informations

5 Technische Daten/ technical data

GD/ 18.11. 99

1 Schaltpläne/ schematics

GD/ 18.11. 99

2 Bestückungspläne/ component parts

GD/ 18.11. 99

3 Bestellnummern/ order no. Tube 50 Combo + Head

no.schematic position name specs part no.
1 mains switch switch 230V/ illum.:117V lampe E 950 030
2 standby switch switch 230V/ illum.:117V lampe E 950 030
3 mains transformer transformer 230V/ 117V/ 100V E 958 088
4 output transformer transformer TAD TF- 125 E 958 085
5 P1 (CH2 gain A/ B) pot
6 P2 (CH1 volume A) pot
7 P3 (CH1 bass) pot
10 P4 (CH1 treble) pot
11 P5 (CH1 mid) pot
12 P6 (CH1 master B) pot
13 P7 (CH1 gain B) pot
14 P8 (CH2 treble) pot
15 P9 (CH2 bass) pot
16 P10 (CH1 mid) pot
17 P11 (CH2 master A/ B) pot
18 P12 (power amp) pot
19 P13 (presence) pot
20 P14 (fx- mix) pot
21 P15 (reverb) pot

250 KΩΩ log, mono
1 MΩΩ log, mono
1 MΩΩ log, mono
250 KΩΩ lin, mono
25 KΩΩ lin, mono
250 KΩΩ log, mono
1 MΩΩ log, mono
250 KΩΩ lin, mono
1 MΩΩ log, mono
25 KΩΩ lin, mono
250 KΩΩ log, mono
500 KΩΩ log, stereo
500 KΩΩ lin, mono
50 KΩΩ log, mono
50 KΩΩ lin, mono

E 914 044
E 914 047
E 914 047
E 914 043
E 914 041
E 914 044
E 914 047
E 914 043
E 914 047
E 914 041
E 914 044
E 914 046
E 914 030
E 914 034

E 914 035
22 D25- D31 rectifier 1N4007 E 934 023
23 C55, C56 hv cap 220u/ 350V ax E 926 016
24 C57, C58 hv cap 33u/ 500V ax E 926 014
25 C59 hv cap 15u/ 450V ax E 926 006
26 TR1 trim pot

50 KΩΩ

E 915 012
27 Rel1- Rel4 relay 24Vdc/ 2 x um E 946 008
25 T1, T2, T3, T8, T9, T14 transistor BF245B E 938 028
26 T4- T7, T11- T13 transistor BC546B E 938 009
27 IC 1 OP amp NE5532A E 940 004
28 IC 2 OP amp LM1458 E 940 011
29 IC 3 OP amp TL072CN E 940 018
30 Tube1- Tube3 tube ECC83/ 12AX7A E 944 007
31 tube socket socket 9pin/ pcb mount E 944 003
32 Tube4- Tube5 EL34B DSS matched ** E 944 017
33 tube socket socket 8pin/ pcb mount E 944 004
34 J1 jack ¼“ phone jack mono E 952 038
35 J5, J6 RCA jack T- 709 E 952 045

** DSS matched duos
available; to order a single
tube, please state the PC
value indicated on the tube

switchboard
36 S1 (amp mode) switch 2 x um E 950 001
37 S2 (channel select) switch 2 x um E 950 001
38 S3 (fx) switch 2 x um E 950 001
39 S4 (reverb) switch 2 x um E 950 001
40 S5 (midi learn) switch 2 x um E 950 001
41 J1 jack MAB 6H E 952 013
42 T1- T4 transistor BC546B E 938 009

FX- DI board
43 S1 (fx –10dB) switch 2 x um E 950 001
44 J1, J2,J5- J7 jack ¼“ phone jack mono E 952 038

GD/ 18.11. 99

no.schematic position name specs part no.
45 J3 jack XLR jack E 952 054
46 IC 1 OP amp TL072CN E 940 018
47 J1, J2,J5- J7 jack ¼“ phone jack mono E 952 038

mains board
48 J1 mains inlet GSP E 952 087
49 C1, C2 MKT cap Y2 47n/ 250V/ Y2* E 920 121
50 C3 MKT cap X2 47n/ 250V/ X2* E 920 059

* replace only with same
type

GD/ 08.11. 99

4 Bestellinformationen/ ordering informations

Bestellinformationen und Ersatzteilbestellungen

Deutschland:
Music & Sales
Leipziger Straße 3
D- 66606 St. Wendel
Service
Tel.: [phone]
Fax: [phone]
E-mail: [e-mail]
Technische Fragen
Tel.:[phone]
E-mail: [e-mail]

Sparepart orders and technical questions for all other countries:

contact your local distributor or

Hughes & Kettner
Leipzigerstr. 3
66606 St. Wendel
Germany
Tel.: [phone]
Fax: [phone]
Email: [e-mail]

GD/ 18.11. 99

5 Technische Daten/ technical data

Tube 50 Combo + Head

Eingänge/ inputs:

Input: Buchse/ connection: ¼“ phone jack

Bauart Eingang/ input type: unbalanced
Eingangsimpedanz/ input impedance:1 MΩ
Empfindlichkeit/ sensitivity: - 10 dB
max. Eingangspegel/ max.input level:+10 dB

FX- Return: Buchse/ connection: ¼“ phone jack

Bauart Eingang/ input type: unbalanced
Eingangsimpedanz/ input impedance:47 kΩ
Empfindlichkeit/ sensitivity: 0 dB
max. Eingangspegel/ max.input level:+20 dB

Ausgänge/ outputs:

FX- Send: Buchse/ connection: ¼“ phone jack

Bauart Ausgang/ output type: unbalanced
Ausgangsimpedanz/ output impedance:220 Ω
Ausgangspegel/ output level: 0 dB
max. Ausgangspegel/ max.output level:+6 dB

DI Out: Buchse/ connection: XLR jack

Bauart Ausgang/ output type: unbalanced
Ausgangsimpedanz/ output impedance:220 Ω
Ausgangspegel/ output level: -3 dB

Power amp:

50 Watts ( RMS ) into 4 Ω @ k = 1%
50 Watts ( RMS ) into 8 Ω @ k = 1%

Bias level:

factory setting: 30 mA per tube (EL34/ 6CA7/ KT77)
allowed range: 25 mA- 32 mA

Speaker out:

Anzahl/ no.: 3 x Klinke/ ¼“ phone jack
Impedanz/ impedance: 4 Ω/ 8 Ω/ 16 Ω

Speaker(Combo):

no.\ size: 1 x 12“
type \ name: Celestion Rock Driver Pro
impedance: 8 Ω
power handling: 100 Watt
power handling programm: 200 Watt

Allgemeine elektrische Daten/ general electrical data:

Schutzklasse I/ protection class 1 (protectively earthed)
Netzspannung/ mains voltage:230V Netzsicherung/ fuse: T 1 A
Netzspannung/ mains voltage:117V Netzsicherung/ fuse: T 2 A oder SB 2 A
Netzspannung/ mains voltage:100V Netzsicherung/ fuse: T 2,5 A
max. Stromaufnahme/ max. current: 0,8 A @ 230V (0,22 A Standby)
max. Leistungsaufnahme/ max. power consumption: 190 VA @ 4 Ω +8 Ω (50,6 VA Standby)
Netzspannungsbereich/ mains voltage range: +/- 10 %
Umgebungstemperaturbereich/ temperatur range: - 10 °C bis + 60 ° C
interne Sicherungen/ internal fuses: 2 x 160 mA tubes power amp

1 x 250 mA low voltage

Allgemeine mechanische Daten/ general mechanical data:

Combo:
Abmessungen/ sizes: Breite/ width: 560 mm Höhe/ height: 500 mm Tiefe/ depth: 285 mm
Gewicht/ weight: 20,5 kg
Head:
Abmessungen/ sizes: Breite/ width: 690 mm Höhe/ height: 270 mm Tiefe/ depth: 270 mm
Gewicht/ weight: 18,5 kg