Ashdown INTERSTELLAR-600 Guy Pratt Signature 600W Bass Head User Manual

Ashdown INTERSTELLAR-600 Guy Pratt Signature 600W Bass Head is a professional-grade amplifier designed for bass guitarists. With its 600 watts of power, it can deliver a clear and punchy sound, even at high volumes. The amp features a 9-band EQ, a tube drive section, and a compressor, giving you a wide range of tonal options to shape your sound. Additionally, it has a balanced DI output for direct connection to a mixing console or recording interface, making it ideal for both live and studio use.

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Ashdown INTERSTELLAR-600 Guy Pratt Signature 600W Bass

Head User Manual

Home » Ashdown » Ashdown INTERSTELLAR-600 Guy Pratt Signature 600W Bass Head User Manual

USER MANUAL

Contents

1 INTERSTELLAR-600

2 THANK YOU

3 REGISTER ONLINE

4 FRONT PANEL

5 REAR PANEL

6 SPECIFICATIONS

7 Documents /

Resources

7.1 References

8 Related Posts

INTERSTELLAR-600

THANK YOU

Thank you for purchasing your Ashdown Engineering Ampliﬁer and welcome to the family! We really think you’ve made the right choice and know that this ampliﬁer 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.

REGISTER ONLINE

Please register this product online so we can make sure we give you years of customer support through our friendly in-house service center.

Here is where you need to visit to register your product: http://www.ashdownmusic.com/pages/register-yourproduct

FRONT PANEL

REAR PANEL

INPUT – There is a single instrument input provided linked to a PASSIVE/ ACTIVE selector switch. The Passive input (switch out) is high sensitivity and also high impedance to suit the output from PASSIVE basses. The Active input (switch in) is low sensitivity and lower impedance to suit the output from ACTIVE basses.

INPUT CONTROL – The INPUT control sets the signal level through the preamp in conjunction with the INPUT

LEVEL VU Meter. This is adjusted to give a reading of 0VU on the meter for average playing dynamics with occasional peaks into the red region. Please note that the setting of this may have to be re-adjusted after modiﬁcation of the EQ controls.

PUSH FLAT / SHAPE – With this button in its OUT position, a ﬁxed E.Q. is superimposed on the preamp to give a bright but punchy character to the sound. Pushing this button IN returns the preamp to a ﬂat frequency response.

TUBE DRIVE (THE BIG KNOB!) – This routes the signal either through a clean Solid State ampliﬁcation section

(control on zero) or through a Dual Triode Tube ampliﬁcation/overdrive section in order to add either tonal character i.e. warmth with the control set at 9 o’clock, a slight edge in the sound at 12 0’clock through to an increasing degree of Tube distortion/ overdrive as the control is advanced to maximum.

A Mix of these two ampliﬁcation sections can be achieved with this control. N.B. The degree of tube distortion provided by this control will also depend on the setting of the INPUT control.

TUBE DRIVE ON/OFF – This toggle switches the valve drive section ON or OFF.

This function may also be controlled from the Ashdown 4-way footswitch.

For the footswitch to operate this button must be in its OFF position.

E.Q. ON / OFF – This toggle switches the Equalisation section ON or OFF i.e. the Bass, Middle, and Treble controls plus the two sets of sliders placed between each of these.

This function may also be controlled from the Ashdown 4-way footswitch.

For the footswitch to operate this button must be in its OFF position.

9 BAND EQUALISATION – This consists of BASS, MIDDLE, and TREBLE control with three sliders placed between each control. These can be used in a number of ways:

Firstly as a very simple Bass, Middle, and Treble tone control section as found on older traditional ampliﬁers. This is done by leaving the two sets of sliders interposed between these controls set in their center positions and using only the BASS, MIDDLE, and TREBLE controls to alter the overall tone.

Secondly, if more control is required then the sliders can also be used to tailor the E.Q. In the regions between the main tone controls. This provides a very versatile equalization section, it is simple to understand and operate, yet provides a wide degree of variation. It retains the simplicity of a three-control tone section but provides the ﬂexibility of a graphic equalizer.

PUSH TO MUTE – When pushed IN this button mutes the output from the preamp to the power amp, and mutes the output from the D.I. Socket and mutes the output from the Line Out socket as well.

A blue LED is provided next to this switch to indicate when the ampliﬁer is muted. This function operates only

from the front panel MUTE push switch. i.e. pressing this button mutes all sound from the ampliﬁer and allows a tuner connected to the TUNER socket to operate for silent tuning. Release the button and you are back in action again.

PRE / POST DI – This is a push-button that allows the user to choose either a Pre E.Q. Signal (button pushed IN) or a Post E.Q. Post Sub and eﬀects signal (button OUT).

FULL RANGE OUTPUT – This output socket provides a line-level signal that can be used for a permanent connection to a tuner, alternative monitoring source, or front of the house.

The signal from this socket remains active when all other outputs from the ampliﬁer are muted allowing all sound from the ampliﬁer to be silenced while tuning is in progress.

LINE LEVEL OUTPUT -This output socket provides a line-level/post Output level control signal for connection to an external power ampliﬁer driving additional speaker cabinets.

OUTPUT LEVEL – The OUTPUT control adjusts the overall level of the ampliﬁer. Adjust this for your preferred overall stage playing volume. On the INTERSTELLAR-600 we have implemented a second VU meter to register the output level as a visual reference.

4-WAY FOOTSWITCH SOCKET – For the 4-way footswitch to operate it is essential that the corresponding front panel pushbuttons be in the OUT position. This is a mono jack socket for connection of the Ashdown 4-way footswitch (sold separately) only. Always connect this prior to turning on the power to the amplifier as the footswitch derives its power from the amplifier and sends a serial data stream to the amplifier in order to operate the various functions.

Each of the 4 facilities available for selection is indicated by an LED that will light when that facility is selected from the footswitch.

N.B The amp features Compression & Sub Harmonics and can be turned on using the footswitch, there are no controls on the front panel, and the FX is pre-set to Guy’s preferred settings.

TAURUS INPUT – The rear panel has a Line Input socket tuned for connecting to a Moog Taurus bass pedal. This can also be used for plugging a CD, Tape or MP3 player into the ampliﬁer for practising, rehearsing, or for connecting a second pre-amp into the system.

FX SEND / RETURN – A serial eﬀects loop is provided at a level of 0dB. The EFFECTS SEND socket can also be used as a Line Out socket if required as the signal path through the preamp is only broken when a jack plug is inserted into the EFFECTS RETURN socket.

The EFFECTS SEND is situated after the EQ, the Valve section the Compression, and the Sub Bass Processor.

SPEAKER OUTPUT – The Interstellar-600 has one power section rated at 600 Watts RMS with two Neutrik combi Speakon out-puts. You can either use Speakon or Jack Speaker cables to connect to your cabinet. The power section has a minimum load of 4 ohms.

DIRECT INJECT (D.I.) – A balanced D.I. Is provided on a latching XLR socket.

The output signal from this XLR socket is set to a level and impedance suitable for connecting directly to the

Microphone input of a mixing desk for either Direct Injection into the PA system or for recording. This must ONLY be used in a Balanced Microphone input, it is not intended for any other type of connection.

This has a ﬂoating ground that is referenced to the mixing console it is plugged into and should not need ground lifting. It is also unaﬀected by Phantom Powering on the Microphone input.

Make sure your XLR plug does not have the shell of the plug internally connected to signal ground or this will connect the system to the chassis ground of the INTERSTELLAR-600 and may cause problems with hum.

SPECIFICATIONS

INPUTS

High Input

Low Input

Line Input

Eﬀects Return

OUTPUTS

Tuner Output

Line Output

Eﬀects Send

D.I. Output

EQUALISATION

Shape (Push Flat)

Bass

Middle

Treble

Slider 1

Slider 2

Slider 3

Slider 4

Slider 5

Slider 6

Frequency Response

Speaker Outputs

Output Power

NOTES

Impedance 3.9M Ohms

Impedance 10K Ohms

Impedance 22K Ohms

Impedance 1K Ohms

Impedance 10K Ohms

Impedance 22K Ohms

600 Ohms balanced

Input range 150mV to 20V p-p

Input range 300mV to 40V p-p

Input level 0dBu nominal

Level 0dBu nominal

Level -20dBu nominal

+8dB @ 50Hz & 4kHz, -8dB @ 400Hz, ﬁlter slope – 6dB/octave

+/-15dB @ 45Hz

+/-15dB @ 660Hz

+/-15dB @ 7kHz shelving

+/-15dB @ 100Hz

+/-15dB @ 180Hz

+/-15dB @ 340Hz

+/-15dB @ 1.3kHz

+/-15dB @ 2.6kHz

+/-15dB @ 5kHz

-3dB at 17Hz and 22KHz

Minimum impedance 4 Ohms

600watts RMS into 4 ohms. Per Power Section

WWW.ASHDOWNMUSIC.COM

Documents / Resources

Ashdown INTERSTELLAR-600 Guy Pratt Signature 600W Bass Head [pdf] User Manual

INTERSTELLAR-600, Guy Pratt Signature 600W Bass Head, INTERSTELLAR-600 Guy Pratt

Signature 600W Bass Head

References

Register Your Product – Ashdown Engineering

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Key features

600 watts of power
9-band EQ
Tube drive section
Built-in DI output
Line out
Headphone output
4-way footswitch (sold separately)

Frequently asked questions

The passive input is high sensitivity and also high impedance to suit the output from PASSIVE basses. The Active input (switch in) is low sensitivity and lower impedance to suit the output from ACTIVE basses.

This control routes the signal either through a clean Solid State ampliﬁcation section (control on zero) or through a Dual Triode Tube ampliﬁcation/overdrive section in order to add either tonal character i.e. warmth with the control set at 9 o’clock, a slight edge in the sound at 12 0’clock through to an increasing degree of Tube distortion/ overdrive as the control is advanced to maximum.

This consists of BASS, MIDDLE, and TREBLE control with three sliders placed between each control. These can be used in a number of ways: Firstly as a very simple Bass, Middle, and Treble tone control section as found on older traditional ampliﬁers. This is done by leaving the two sets of sliders interposed between these controls set in their center positions and using only the BASS, MIDDLE, and TREBLE controls to alter the overall tone.