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Rear Panel 

 

 
1. 

Mains power switch

: in the up position, mains power is off (even if mains lead plugged in); in down 

position, mains power is on. 

2. 

Mains power socket

: connect UK 240v mains power here. 

3. 

Tank impedance selector switch

: allows you to adjust the tank send output to match different 

types of spring reverb unit. Both spring tanks supplied with the unit have an impedance of 8 ohms, 
so the switch is preset to this value. Always make sure that this switch is set to the correct value for 
any spring reverb you wish to use with the unit. 

4. 

Ground lift switch

: applies ground lift to unit’s audio circuit – helps to solve some ground loop audio 

problems. 

5. 

Tank send output

: audio output to spring reverb. This output is not a standard line level audio 

output; it is designed specifically to drive a spring reverb tank. Do not connect this output to any 
other audio equipment (mixers or effects processors), since doing so may result in damage to your 
equipment. 

6. 

Out: main audio output

 (to mixing desk etc). This output is nominally at line level, but the unit is 

capable of generating very loud signals. 

7. 

Tank return input

: audio input from output of spring reverb unit. This input is designed to receive 

the low-level output of a spring reverb – it is not a standard line level audio input. Do not plug any 
other audio equipment into this input, since doing so may result in damage to the unit. 

8. 

In: main line level audio input

 (from instrument) 

 
Note: components within the unit’s casing have been positioned for optimum audio quality. The positioning of 
the input and output sockets on the rear panel reflects this. 
 
 

Fuses 

 
Fuse   A 

 

Mains Fuse 1A 

 

 

Channel 1 Power Supply fuse 100mA 

 

 

Channel 2 Power Supply fuse 100mA 

 

 

Common Power supply fuse 250mA 

 
All fuses are slow blow or ‘T’ for time delay. 
 

 

Summary of Contents for Stereo Spring Reverb/Valve Amplifier

Page 1: ...igned and hand built by Argiriadis Analogue Electronics This unit is bespoke and has been designed using purely analogue components so its construction and operation are significantly different to those of off the shelf effects units Please read this instruction manual carefully before using the unit you ll be rewarded with a unique and beautiful sonic toolkit for your music It ll take a while to ...

Page 2: ...ive a spring reverb tank Do not connect this output to any other audio equipment mixers or effects processors since doing so may result in damage to your equipment 6 Out main audio output to mixing desk etc This output is nominally at line level but the unit is capable of generating very loud signals 7 Tank return input audio input from output of spring reverb unit This input is designed to receiv...

Page 3: ... passed to the unit s output mix 6 Original level this knob controls the level of original unaffected signal passed to the unit s output mix 7 Effect switch when up the unit s reverb and amplification distortion stages are muted 8 Master Out knob controls the overall level of the unit s output mix 9 Triode Pentode valve mode switch selects the unit s amplification distortion mode 10 Standby mains ...

Page 4: ... the front panel s stand by mains switch front panel 10 to its down mains position The unit is now fully powered up and the front panel s green LED will light up The unit is now ready for use Operation mute buttons Important when changing valve mode triode pentode changing the setting of the input gain switch or setting the effect switch press and hold in the mute button of the relevant channel Th...

Page 5: ...the level of the amplified distorted signal in the unit s output mix Switching the effect switch to its up position mutes the amplification distortion effect Operation reverb First check that the effect switch is down so that the unit s reverb and amplification distortion stages are not muted Turn all knobs fully anti clockwise Now turn up the reverb knob and the master output knob about halfway T...

Page 6: ...and a little sustain to signals Very good with synth drones pads and ambiences but I d recommend investigating with all kinds of signal with the right settings you can make effects in which distortion harmonics fade in and out gradually adding I think very beautiful movement to pads and atmospheres Hard distortion Higher master drive settings will create harder harsher distortions remember to turn...

Page 7: ...al sound This effect works particularly well with percussive noises you ll hear sudden transient signals wobbling the spring You can turn down the original signal completely so that the unit s output mix contains only reverb This setting allows you to use the unit as a spring reverb send effect Reverb times Shorter springs generally mean shorter reverb times so you can get different effects from t...

Page 8: ... return of the unit is an ordinary screen jack to phono lead This unit can drive the springs really hard and as a result you can obtain this very characteristic unique type of reverb distortion This can be achieved by turning up the master drive and using the reverb to control the level of reverberated distorted signal Very occasionally however springs might fail because the coils of the spring ar...

Page 9: ...y twist anti clockwise and pull on the valve holders To put back line up notches to the caps and twist clockwise very carefully Again caps do not have to be on if unit is not to be transported or moved around a great deal However it may be slightly noisy without the caps Valves 3 and 4 have to be replaced about once a year if using unit every day Cost per valve 1 50 Valves 1 and 2 replaced less of...

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