Ashdown CTM-30 Little Stubby Manuale utente

Thank you for purchasing your Ashdown Engineering Amplier and welcome to

the family! We really think you’ve made the right choice and know that this

amplier 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

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 amplier. 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 preamplier and power amplier 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 inuence 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 amplier 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 amplier 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 amplier 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 specic specications

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 amplier 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 Amplier

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

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