Wednesday, December 13, 2017
Hand Wired, All Tube Amplification

 

AMERICAN CLASSIC REVERBAMERICAN CLASSIC REVERB

 

Pictured is the prototype model.
Components & tubes may vary from production

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American Classic '57 Reverb

The American Classic Deluxe 57  Reverb is a simple, yet powerful enough, very versatile, medium sized amp.
At just about 25 Watts can be loud enough without miking it for small to medium gigs. 

It is a 2 channel amp (Normal & Bright) and each channel has 2 inputs (Normal, Low).

Each channel has each own VOLUME and they both share the same (very responsive) TONE control. 

The Colorsound American Classic '57 Reverb is based on the famous Fender Deluxe 57 (tm) amplifer (5E3 model) with added tube spring reverb unit.

Its unmistakable warm and rich tube tone can take you from Jazz, Blues, to Rock territories with ease, and sounds just great, with plenty of natural tube distortion at high levels and a natural compressed sound.
The acclaimed 5E3 circuit that is based on, the solid pine construction, and the double 6V6 tubes all contribute to the touch sensitive & reasonant tone that this amplifier is capable of producing.   


TUBE SUBSTITUTION

Different types of tubes amplify the signal more or less.
Tubes with high amplification factor will sound louder and will break up (distort) quicker.

If you want "grit" and "dirt" use a 12AX7/ECC83 or a 5751 in either or both stages.
If you want cleaner tone at high volumes, try the rest of the listed tubes to find your sweet spot.

TUBE

 AMPLIFICATION
FACTOR

12AX7/ECC83   
100
5751 70
12AT7/ECC81 60
12AY7/6072 40
12AU7/6680 20



Technical information






Electronics


INPUTS:
4 INPUTS (2 PER CHANNEL)
CHANNELS:
2 - NORMAL & BRIGHT
POWER HANDLING:
25 Watt into 8 Ohms
CONTROLS:
VOLUME NORMAL, VOLUME BRIGHT, TONE (Common to both channels)




Speaker(s) & impedance


SPEAKER(s) on the prototype:
2 x 12
1 x 12 Celestion Greenback and 1 x 12 Eminence Blackhheart

SPEAKER IMPEDANCE:
8 Ohms




Tubes


RECTIFIER TUBE:
1 x 5Y3 or 1x GZ34/5AR4 or 1 x 5U4GB

POWER TUBES:
2 x 6V6 or 2 x 6L6 or 2 x EL34

PRE-AMP TUBES:
(Default) 2 x 12AX7, 1 x 12AY7, 1 x 12AT7





Dimensions




WIDTH:

62cm

HEIGHT:



DEPTH:

27cm

WEIGHT:






Reverb:  
Authentic accutronics Type 4
FX Loop:  
No
Impedance switch:  
No
Ext. speaker jack:  
Yes
Fuse box:  
Yes
Standby switch:  
Yes




Additional info:
  1. The 2 channels can be jumpered in order to use both volume controls  for extra tone manipulation.
  2. The default tube combination for vintage tone is one 12AX7 and one 12AY7
  3. This amplifier can be made also as a head with/without a separate cabinet.
  4. As a Colorsound product, it is custom made. You can alter the parts of this amplifier to suit your musical tastes and style.

Go ahead, plug in to one!

Colorsound amplification is not in anyway affiliated with any other organizations baring the name 'Colorsound'
All other brand names mentioned in this website, are brand names of their respective companies
Colorsound amplification is based in Athens, Greece