What The Tube Status Control Tells You; Matching Tubes With Tsc; Midi Control And Programming; Setting Up The Fsm - Hughes & Kettner Coreblade Manual De Instrucciones

2) You can continue playing despite a defect: TSC™ shuts a faulty tube down and
an LED indicates the defect. You can continue playing and the amp will get you
through the gig.
3) You can easily check tube ratings: You can check a tube's bias point and
determine if pairs match any time you wish without taking the amp to a tech. All
you need to do this is a pick. See section 6.4.1 for more on this.
4) Tubes last longer: TSC™ always adjusts bias to the optimum operating point,
thereby preventing excessive current from overloading tubes.
5) You enjoy optimum sound: TSC™ minimizes undesirable crossover distortion
even when tubes' bias points diverge strongly.

6.3 What the Tube Status Control tells you

Each of the LEDs in side-by-side array is assigned to the power amp tube
occupying that same position. TSC™ automatically indicates tubes' operating
status as soon as you switch STANDBY off to turn the amp on. You can activate
the display's readout manually by inserting a pick into the slot to view tubes' bias
points and match sets on your own.
6.3.1 All LEDs Off
Power output tubes are operating normally.
6.3.2 All LEDs Light Up and Stay On
All LEDs remain on for as long as the amp is in standby mode to indicate tubes
are heating up but no current is flowing to them. Leave the amp on standby for
about 30 seconds, and the LEDs will extinguish when you switch from standby to
on. If the LEDs continue to light up, the most likely cause is a blown anode fuse
that needs to be replaced. It is on the rear panel, readily accessible from outside
the amp. The fuse can trip if a tube is already defective when the amp is switched
on, and TSC does not have enough time to measure idle current and shut the
faulty tube down. This may occur in case of serious tube defects such as a short-
circuit caused by the anode and cathode making direct contact, or voltage spikes
occurring when using older tubes and fuses. If you experience one of these rare
events, have a technician replace the tubes and fuses. See chapter 8 to learn more
about this.
6.3.3 One LED Lights Up Continuously
The tube assigned to this LED is producing under-voltage. If the LED fails to
extinguish after a few minutes, the power output tube must be replaced. Please
read and heed the instructions in chapter 8.
6.3.4 One LED Flashes, Another Lights Up Continuously
The tube assigned to this flashing LED is generating over-voltage. It has been shut
down and must be replaced as described in chapter 8. In this type of power amp,
it takes a pair of tubes working together to produce the best sound. The defective
tube's counterpart is switched off so it doesn't degrade the other pair's tone. This
tube's LED lights up continuously to indicate it has also been shut down, but
there is no need to replace it. You can continue playing, though output is halved
from 100 to 50 watts for as long as the LED remains illuminated. If this occurs in
a conventional amp, its fuse usually trips and you can't operate it until you replace
the tube and fuse.

6.4 Matching Tubes with TSC™

TSC™ lets you check installed tubes, as well as replacement tubes before and
during installation.
6.4.1 Getting a Read-Out
Insert a pick into the slot in the panel labeled Tube Matching Read-Out while the
amp is on (rather than in standby mode). All LEDs will flash. How many times
the LEDs flash matters, but what matters more is the difference in flash counts.
If the rating deviates upward or downward by six or more flashes, the bias points
are too far apart for TSC™ to compensate. The given power output tube must be
replaced to achieve optimum sound.
The tables in section 5.3.3 show Hughes & Kettner tube ratings. You can buy
tubes with the same ratings from your local dealer. You'll find a sticker with the
original Hughes & Kettner rating (S1-S3, 0-9) on the power output tube. Bear
in mind that if you're using different types of tubes - that is, EL34s and 6L6GCs
– you must consider the flash signals separately for each tube type. The table in
section 5.3.3 shows you how the flash count translates to a rating.
6.4.2 Checking for matching ratings after swapping tubes
If all tubes are replaced, ensure they all have the same ratings. The choice of rating
is up to you, and TSC™ spares you biasing effort. If just a single tube is swapped,
ensure the replacement tube's rating matches the ratings of the other tubes in the
amp.
6.4.3 Tube ratings tables
EL34 power output tubes 6L6 power output tubes
flashes rating flashes
1 S3 1
2 S2 2
3 S1 3
4 0 4
5 1 5
6 2 6
7 3 7
8 4 8
9 5 9
10 6 10
11 7 11
12 8 12
13 9 13
14 10 14
15 11 15
16 12 16
17 13 17
18 14 18
19 -- 19
20 -- 20
21 -- 21
22 -- 22
23 -- 23
24 -- 24
25 -- 25
26 -- 26
27 -- 27
7

MIDI Control and Programming

The MIDI interface serves mainly to control
included FSM 432. But you can also control the amp using other MIDI devices,
as well as remote-control other MIDI receivers using the FSM 432.

7.1 Setting Up the FSM 432

7.1.1 Direct Mode
DIRECT MODE lets you trigger a direct program change via BANK UP/
DOWN. In this mode, the FSM 432 will not wait for your input by way of the
A, B, C, or D buttons, instead switching directly, for example, from preset B
rating
--
--
--
--
S4
S3
S2
S1
0
1
2
3
4
5
6
7
8
9
10
11
12
12
13
13
14
14
14
C o r e b l a d e using the
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