Ashdown CTM-30 Little Stubby Manuale utente
Thank you for purchasing your Ashdown Engineering Amplier and welcome to
the family! We really think you’ve made the right choice and know that this
amplier will give you years of great tone and service.
It is a machine though and needs to be looked after, please read
through this user manual which will help you get the most out of
your new Amp and keep it running as long as some of our
happiest and very famous customers.
Please register this product online so we can make sure we give you years of
customer support through our friendly in-house service centre.
Here is where you need to visit to register your product:
http://www.ashdownmusic.com/pages/register-your-product
THANK YOU
REGISTER ONLINE
CTM-30-LITTLE STUBBY USER GUIDE
Weight - 12Kgs - 26lbs
RETURN
SENSITIVITY
LOW
HIGH
DRIVE VOLUMEBASS MIDDLEFEEDBACK TREBLE
SEND
FX LOOP
MAINS INPUT
4 OHMS
8 OHMS
DI OUT
TRANSFORMER
INPUT
INSTRUMENT
VOLTAGE
USER GUIDE
Instrument Input
There is one instrument input, with a Sensitivity switch. The high sensitivity
toggle is a high impedance toggle to suit passive bass instruments. The
Low sensitivity toggle has an impedance to accurately match the signal
from active bass instruments i.e. Those with a built in battery powered
pre-amp.
Drive
This works as a gain control from crystal clear tones through to full bore
rich harmonic distortion... A little can go a long way...
Feedback
The feedback control alters the slope of the lower frequencies in the bass
control section.
Bass, Middle & Treble Passive EQ
This consists of bass, middle and treble controls with a vastly enhanced
range of over 40dB at full output.
Volume
The output control adjusts the overall level of the amplier. Adjust this for
your preferred overall stage playing volume.
VU Meter
The VU meter provided on the front panel gives you a a visual dispaly of
output of the amp as its being played. This can be used to ensure clean
headroom or for something a little more agressive....
CTM-30-LITTLE STUBBY
USER GUIDE
CTM-30-LITTLE STUBBY
Effects send/return
A tube driven and recovered effects loop is provided, this is situated be-
tween the preamplier and power amplier ahead of the master volume,
The signal level is suitable for driving a wide range of effects pedals , the
level present being entirely dependent on the level of pre gain being
used. Only effects should be used in this loop.
D.I.
A DI is provided on the rear panel , connection is made via a TRS type
jack socket .This is transformer derived from the output and as such
will have all the adjustments made with the tone controls , all effects in
use and some inuence from the speaker in use.The level obtained is
dependent on playing volume. But as a general rule is suitable for line
level (0,775V).
The DI is totally isolated and as such may be used as a line out ( note a
TRS jack MUST be used and you can obtain an in phase or out of phase
signal) Note That the amplier must always have a Load connected. This
can be a speaker or a load box for silent recording.
Speaker Outputs
Two speaker output sockets are provided at an impedance of 8 or 4
ohms only ONE must be used at any one time , the socket being chosen
to match the impedance of the cabinet combination in use at the time.
Note That the amplier MUST ALWAYS have a Load connected. This can
be a speaker or a load box for silent recording.
USER GUIDE
CTM-30-LITTLE STUBBY
MAINS
The amplier is tted with a standard IEC connector and supplied IEC
lead correct for the country in which you reside.
The Preset input VOLTAGE is shown on the rear panel together with fuse
ratings.
WARNING!
This product has been manufactured according to specic specications
with regard to supply voltage requirements that are applicable to the
country in which it is intended that this product be used.
If you have purchased this product via the internet or mail order you must
verify that this product is intended to be used in the country in which you
reside.
The use of this product in any other country other than that for which it is
intended could be dangerous and invalidate the manufactures warranty.
USER GUIDE
CTM-30-LITTLE STUBBY
Inputs
High sens Nominal 100mV @1Mohms Impedance (Suitable for passive instruments)
Low sens Nominal 300mV @ 22k impedance (suitable for Active instruments)
Effects Loop
Valve driven effects loop, Valve recovered Nominal 225mV
DI Output
Transformer generated signal from the amplier output level dependant on
playing volume suitable for connection @ line level via TRS jack to XLR. ISOLATED
GROUND
Equalisation
Totally PASSIVE eq circuit Bass , Middle and Treble controls , Range Zero to full
output on all 3 bands ( dependant on volume setting ).
Feedback control alters the slope of the lower bass lters and affects the extension
of the lower bass frequencies.
Power Amplier
All Valve design featuring a fully oating paraphrase inverter, 4 x EL84 power tubes
with individual self biasing, and Zero negative feedback for a self limiting open loop
response and a good sensitivity to the speakers in use.
Output power 30 watts continuous average into 4 or 8 ohms.
Valve complement:
1 x ECC81
1 X ECC82
2 x ECC83
4 X EL84
Indice
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