"GOLDEN MIDDLE" : ARCHIVE

preamps phono-stage transformers power tube amplifiers





Hi-Fi PREAMP-PHONO STAGE "RIAALIGHT"


IN THE CLOSED CASE

Front aluminuim panel (thickness 5 mm).
Case dimensions W 435 mm H 100 mm L 310 mm.
Case colour - black (powder coating).


Hi-Fi PREAMP-PHONO STAGE RIAALIGHT stereo Hi-Fi PREAMP-PHONO STAGE RIAALIGHT stereo
Hi-Fi PREAMP-PHONO STAGE RIAALIGHT stereo Hi-Fi PREAMP-PHONO STAGE RIAALIGHT stereo Hi-Fi PREAMP-PHONO STAGE RIAALIGHT stereo


IN THE CLOSED STEEL CASE

Front aluminuim panel (thickness 5 mm).
Case dimensions W 310 mm H 110 mm L 200 mm.
Case colour - black (powder coating).
The external power stage.

Hi-Fi PREAMP-PHONO STAGE RIAALIGHT stereo Hi-Fi PREAMP-PHONO STAGE RIAALIGHT stereo
Hi-Fi PREAMP-PHONO STAGE RIAALIGHT stereo

IN THE OPEN ALUMINIUM CASE

Case dimensions W 465 mm H 50 mm L 105 mm
Case colour - black (powder coating)
The external power stage.


Hi-Fi PREAMP-PHONO STAGE RIAALIGHT stereo Hi-Fi PREAMP-PHONO STAGE RIAALIGHT stereo
RIAALIGHT RIAALIGHT power supply


DIY "RIAALIGHT KIT"

: Tubes : E180F 2 pcs; E83 / 6N2P-EV 1 pcs; ECC88 / 6N23P 1 pcs.
2 pcs PCBs from a fiberglass (thickness 2 mm):
PCB of power supply type #IP2 85 mm 90 mm and PCB of preamp phono-stage 280 mm 90 mm;
Complete set of all necessary parts for assembling
(transitional capacitors K71-7 & K71-4, electrolityc capacitors Jamicon) ;
Toroidal power transformer;
Input and output sockets;
Power cord;
Full curcuit diagram ;
CD with instructions of assembling.



DIY TUBE PREAMP-PHONO STAGE

power supply set of vacuum tubes for RIAALIGHT

"RIAALIGHT" curcuit diagram Curcuit diagram of RIAALIGHT


Hi-Fi PREAMP-PHONO STAGE "SESSIES"

Hi-Fi PREAMP-PHONO STAGE
TECHNICAL SPECIFICATIONS :

Tubes : 6S3P, 127, 127
Ku = 540
Uin = 3 mV
Uout = 1.62 V
Overload : 36 db
The external power stage.
"SESSIES" curcuit diagram curcuit diagram

Hi-Fi PREAMP-PHONO STAGE "THE PHONO OF CU-SERIES"

The Phono Of Cu-Series
TECHNICAL SPECIFICATIONS :

Tubes : 6S3P, 1579, 6N6P x 2
Ku = 650
Uin = 3 mV
Uout = 1.95 V
Overload : 37 db
Cuprum case
The external power stage.

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SINGLE - ENDED OUTPUT TRANSFORMERS

SE output transformers for tube amplifiers

POT - SE - 2,5 / 8 - 20
2,5 KOhm / 8 Ohm 120 mA 20 W
potted into black boxes

TECHNICAL SPECIFICATIONS :

Case dimensions : 75 mm x 85 mm x H 95 mm
The adjusting sizes : 4 3 55 mm 65 mm
Inductance : 30 H (DCI = 120 mA)
The maximum DC operation voltage : 1000 V
The maximum output power : 20 W
Frequency range of 1 W: 10 Hz - 45 KHz

It is recommended to use with following vacuum tubes :
2 6S4S / 2S4S, 300B, 6S19P, 6P3S-E / 5881, 2 6P14P / EL84 / 6BQ5, 2 300B,
6550, 6P3S / 6L6, EL34, 2 x EL34 (in triode)

Transformer circuit diagram Transformer circuit diagram



SINGLE - ENDED OUTPUT TRANSFORMERS

POT - SE - 8 / 8 - 30         OT - SE - 8 / 8 - 30
8 KOhm / 8 Ohm 140 mA 30 W

potted into black boxes        not potted
SE output transformers for tube amplifiers         <i>(for the potted item)</i>

TECHNICAL SPECIFICATIONS :

Case dimensions : 130 mm x 130 mm x H 140 mm (for the potted item)
The adjusting sizes : 4 4 100 mm 100 mm (for the potted item)
Inductance : 35 H (DCI = 140 mA)
The maximum DC operation voltage : 2500 V
The maximum output power : 30 W
Frequency range of 1 W: 12 Hz - 25 KHz

It is recommended to use with following vacuum tubes :
GM70, GK71, SV572, 211, 845

Transformer circuit diagram Transformer circuit diagram



SINGLE - ENDED OUTPUT TRANSFORMERS

POT - SE - 4,0 / 4 / 8 / 16 - 30
4 KOhm / 4 or 8 or 16 Ohm 250 mA 30 W

potted into black boxes

SE output transformers for tube amplifiers

TECHNICAL SPECIFICATIONS :

Case dimensions : 130 mm x 130 mm x H 140 mm
The adjusting sizes : 4 4 100 mm 100 mm
Inductance : 33 H (DCI = 250 mA)
The maximum DC operation voltage : 2500 V
The maximum output power : 30 W
Frequency range of 1 W: 15 Hz - 25 KHz

It is recommended to use with following vacuum tubes :
2 6S4S, EC360, RB300-3CX, 6P3S-E / 5881,
2 6550, 2 KT88, 6C33C, GK71 (in triode)

Transformer circuit diagram Transformer circuit diagram



POWER TRANSFORMERS

PT - POT - 15 / 300

not potted

power transformer for tube amplifiers

TECHNICAL SPECIFICATIONS :

Toroidal core
Dimensions : diameter 60 mm, height 30 mm
The maximum target capacity : 15 W
Primary 220 V
Screen winding
Secondary :
1 - 300 V 0,025 A
2 - 8 V 1 A

Transformer circuit diagram Transformer circuit diagram


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Hi-Fi SE TUBE POWER AMPLIFIER "THE BLUES OF CU-SERIES"

Hi-Fi SE TUBE AMPLIFIER
TECHNICAL SPECIFICATIONS :

Output power raiting 10W (8 Ohm)
Tubes (one channel) :
2 x 4P1L + Interstage + 300B + 2 x 6D22S
The copper case
SOFT-START and STAND-BY systems
External power supply
THD = 1.8 % (-3 db)
Input signal level = 1 V
Frequency response (-3 db) : 10 - 35000 Hz

Hi-Fi PP TUBE POWER AMPLIFIER "PIANO GOLD" class

 Hi-Fi PP TUBE AMPLIFIER class
TECHNICAL SPECIFICATIONS :

Output power raiting 14 W (8 Ohm)
Tubes (one channel) : 6N6P + Interstage + 2 x 6P3S-E / 5881
THD = 1.2 % (-3 db),
Input signal level = 0,8 V
Frequency response (-3 db) : 15 - 5000 Hz

Hi-End SE TUBE AMPLIFIER "EXPRESSIVE"

Hi-Fi SE TUBE AMPLIFIER
TECHNICAL SPECIFICATIONS :

Output power raiting 30W (8 Ohm)
Tubes (one channel) :
6S2S / 6J5 + 6F6S / 6F6 + GM70 + 2 x 5C3S / 5U4G
The copper case
SOFT-START and STAND-BY systems
THD = 0.8 % (-3 db)
Input signal level = 1 V
Frequency response (-3 db) : 10 - 35000 Hz

"EXPESSIVE" circuit diagram SE tube power amp curcuit diagram

Hi-End SE TUBE INTEGRAL AMPLIFIER "EXPRESSIVE MK2"


Expressive tube amp

TECHNICAL SPECIFICATIONS :

Output power raiting 30 W (SE Class A)
Tubes (one channel) :
6S2S / 6J5 + 6F6S / 6F6 + GM70 + 2 x 5C3S / 5U4G
Remote control
The integral amp (quantity of inputs - 3 )
SOFT-START and STAND-BY systems
THD = 0.8 % (-3 db)
Input signal level = 1 V
Frequency response (-3 db) : 10 - 35000 Hz


Expressive tube amp

Expressive tube amp

"EXPESSIVE" circuit diagram SE tube power amp curcuit diagram

Series "TWIN 2000"

Hi-Fi SE TUBE POWER AMPLIFIER "BLUES DHT"

Hi-Fi SE TUBE AMPLIFIER BLUES DHT
TECHNICAL SPECIFICATIONS :

Output power raiting 8 W (8 Ohm)
Tubes (one channel) : 2 x 4P1L + 300B + 5C3S / 5U4G
THD = 2 % (-3 db),
Input signal level = 1 V
Frequency response (-3 db) : 16 - 30000 Hz

"BLUES DHT" circuit diagramSE tube power amp curcuit diagram

Hi-Fi SE TUBE POWER AMPLIFIER "BLUES"

Hi-Fi SE TUBE AMPLIFIER
TECHNICAL SPECIFICATIONS :

Output power raiting 8 W (8 Ohm)
Used tubes (one channel) : 6N8S / 6SN7 + 300B + 5C3S / 5U4G
THD = 1.5 % (-3 db),
Input signal level = 1 V
Frequency response (-3 db) : 16 - 27000 Hz

"BLUES" circuit diagramSE tube power amp curcuit diagram

"BLUES" power supply circuit diagram tube power supply curcuit diagram

Hi-Fi SE TUBE POWER AMPLIFIER "TWIN"

Hi-Fi SE TUBE AMPLIFIER
TECHNICAL SPECIFICATIONS :

Output power raiting 7 W (8 Ohm)
Tubes (one channel) : 6N7S / 6N7 + 2 x 6S4S / 6B4G
THD = 0.6 % (-3 db),
Input signal level = 1,7 V
Frequency response (-3 db) : 15- 28000 Hz

"TWIN" circuit diagram SE tube power amp curcuit diagram

"TWIN" power supply circuit diagram  power supply circuit diagram


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