AC Guitars EQ-02 Gebruiksaanwijzing - Pagina 4

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FILTER-BASED EQ-02 SYSTEM

INSTRUCTION MANUAL

TREBLE FILTER STACK

The treble stack is there to address the top end of the spectrum as the filters cut off below the very highest

frequencies you can get from roundwound strings. Here we're talking about the high end 'sizzle'. The

frequency control also goes well down into the upper midrange around 1kHz. This is another filter type, a

HIGH PASS FILTER in the treble signal path. This sets the frequency above which the treble spectrum is

allowed to pass through.

The upper knob controls the gain (boost) applied to the treble frequency while the lower ring controls

the frequencies which are allowed through. Turning the frequency ACW allows more of the lower treble

spectrum. Setting more CW allows only the higher frequencies of the treble spectrum to pass.

PASSIVE TONE

In the 4 knob J plate version and the 5 knob version there is the addition of a passive tone control. The dual

passive tone pot and two capacitors are connected directly to the pickups in order to create a passive roll-

off via direct interaction with the pickups.

INTERNAL CONTROLS

The pre-amp also has some internal control options. There is a separate gain control for each pickup input.

The main use for this control is to allow you to use two different types of pickup but still have a balanced

volume from them both.

In the basses I make I use a Ceramic magnet in the bridge pickup and an Alnico magnet in the neck pickup.

Because of the two different magnet types the output from the pickups is slightly different. The Ceramic

pickup has a higher output than the Alnico pickup so I boost the gain on the Alnico pickup slightly to

balance out the difference.

This would also allow you to use say a Musicman style pickup with a Jazz style pickup and still be able to

balance their respective volumes.

The other internal Preset Adjuster is NOT USER ADJUSTABLE and under no circumstances should it

be moved. This will void your warranty and ACG will be in no way responsible for any consequential

damaged caused if the user adjusts this pot.

I hope this will point you in the right direction with your new ACG pre-amp. It is only a starting point as I am

sure you will soon find there are a fantastic range of sounds available and finding what best suits you and

your style of playing may take a little longer due to the flexibility of the pre-amp.

www.acguitars.co.uk

07754 502 366