Diamond Guitar Pedals MEMORY LANE Manuale d'uso - Pagina 3

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LED ﬂashes for visual feedback of delay time

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self-oscillating feedback path with ability to shape via feedback EQ in

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realtime

analog voltage supply internally regulated to 15V for low noise operation

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and increased headroom in line level effect loops

rugged genuine Hammond aluminum diecast enclosure DC adapter

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included

Controls

Delay

In modulation mode this controls the delay time, from approximately 40 ms

fully counterclockwise to 550 ms clockwise. In tap mode this control is inac-

tive, with delay time being set by the tap footswitch.

The EQ is placed after the bucket brigade delay devices, and affects all echoes

(both the ﬁrst echo and the regenerated echoes due to feedback), but NOT

the direct signal. The EQ in the Memory Lane is not a typical boost/cut treble

control. Instead, a 'tilt' style EQ is used, ﬁrst introduced in the 1970's by hi-ﬁ

manufacturer Quad, and also used in the Diamond Compressor. The goal of

this eq is to provide subtle spectral shifts in the overall frequency balance

of the delayed signal, not just a simple dulling or brightening of the treble

frequencies. You can think of the EQ as a spectral 'see-saw' with the balance

point ﬁxed at a mid range frequency. With the EQ in the center detent posi-

tion, the EQ is completely ﬂat. Setting the EQ counterclockwise gives pro-

gressively darker repeats, while setting the EQ clockwise gives progressively

lighter repeats.

Feedback Level

This controls the amount of delayed signal fed back into the input of the

delay circuit, which in practice controls the number of decaying repeats that

are heard. Fully counterclockwise, no signal is fed back, so only one echo is

heard. At about the mid-point, multiple repeats can be heard depending on

the strength of the original signal. Past mid-point, there starts to be sufﬁcient

gain for oscillation to begin. The onset of oscillation is also dependent on the

delay time (shorter delay times make it easier to begin oscillation) and the

EQ (gain in the EQ, particularly when set towards the treble side, can make it

easier to begin oscillation), so some adjustment of the Feedback level may be

required if the delay time or EQ is changed.

Modulation Depth

This controls the amount of modulation to be applied to the delayed signal

(does not affect the direct signal). Fully counterclockwise, modulation is off

- there is a clickable switch in the control that indicates fully off. This rotary

switch in the modulation depth control is a master on/off control for modula-

tion – the footswitch control in modulation mode only turns on modulation to

whatever it is preset on the depth and speed controls. Also, the actual depth

of modulation is affected by delay time – for a given modulation depth setting,

longer delays will give deeper modulation than shorter delays.

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