S.E. "CLASSE A" transformer coupled AMPLIFIERS

BLU BAY

 

aesthetics? beauty? sound? class? technology? design? research? semplicity? naturalness? magic? well, I don't' know ... have a guess .....

 

Hit Counter

since 28-5-2007

 

70 watt/Ch - SINGLE ENDED - FULL classe A at max power

completely NO. F.B.

where is the 75 mm diameter aluminum frontal INPUT SELECTOR KNOB?

 

 

 

 

 

 

 

 

BLU BAY

70 watt/Ch - SINGLE ENDED - FULL classe A at max power

completely NO. F.B.  - 2 sole transistors S.E. per channel 

85/85 watt one channel working

External Power supply BE P7 ( 90Watt/ch both channel driven with BE P9)

6 inductive POWER SUPPLY CELLS on each bias and output transistor circuit supply

4 section motorized sealed potentiometer for volume control with remote

more than 2 pounds FULL BRASS 56 mm VOLUME KNOB

peak meter on each channel

150 watts nominal output transformers

BI-AMP with separate output transformer coils for HI and LOW

more than 30 possibility of impedance matching

Chassis completely insulated from signal ground

108 dB  Signal/noise ratio without any F.B. even local

-3,4 dB @ 10 Hz and  -0,5 dB @ 60 KHz

 

 

 

 

frontal mechanical selector  with double contact matching

75 mm FRONTAL aluminum input selector knob clearly invisible

(it is not inserted into, neither coaxial, or around or on the back of the volume KNOB. Volume knob only exist for volume purpose)

low line impedance cabling for inputs - OFC

no screws visible on chassis or sides

no holes for heat waste - BLU RACING car metalized varnishing

15 mm thikness cristal as front panel - 15 mm aluminum for sides

PSU with double shades (blu on top and grey/blu on sides)

internal BLU led on Volume knob for volume position

BLU EYES amplification technology

 

 

 

 

 

R.M.S. Power

70+70 Watt both channels driven - impedance settings from 3 to 11 ohm

85 / 85 Watt one channel driven

Frequency response

10 Hz - 60.000 Hz ( -3,4 dB @ 10 Hz / -0,5 dB @ 60 KHz) 2,5 watt/6 ohm

Sensitivity

0,91 Veff for 70 watts output

Stadi utilizzati

1 x S.E impedance transistor adapter (BIL model direct onto input transformer), 1 interstage transformer, 2 x TRANSISTORs in S.E. counterphase connection output, Full CLASS A at max power (DYNAMIC REGULATION - Royal Device Technology)

S/N RATIO

 better than 108 dB

Power sink at power ON

12 Watts

Dimensions

420 x 250 x 100 mm

Weight

 

Chassis Finishing

15 mm CRISTAL FRONTAL GLASS  15 mm Aluminum side panels - Blu metalized racing car top and back panels.

NOTES

Full (dynamic regulation) class A Solid State Single Ended amplifier with a  70% OUTPUT STAGE efficiency for FULL CLASS A at maximum power. Only 3 transistors for 2 amp stages. Completely NO FEED BACK even locally. Bandwidth 14 Hz - 100 KHz.  2 "BLU" LEDs used as frontal VU meters and a RED LED as PEAK METER. No internal microprocessor. Notes: no writings. HI-END golden CONNECTORS. FRONT CRISTAL GLASS. Interstage-Output transformers. Internal impedance settings from 3 to 11 ohms. External Blu Metalized P.S.U. - 6 PI-GREC internal INDUCTIVE cells. BI-AMP outputs on separate transformer coils. No GROUND connection technology with chassis
 

 

 

 

 
 

 

 

 

 

The internal blu led for volume positioning

 

 

 

 

External PSU has shaded sides - it is not a photograph effect

 

 

 

 
 

 

 

 

 
 

 

 

 

 

connettors and  ..... 3 sole golden screws on the back - the top is completely fixed when on place and cannot fall down with amp reversed upside down
 

 

 

 
 

 

view of the 2 pound BRASS KNOB fitted into the 15 mm frontal cristal

 

 

 

 

 

 

BLU SKY on the shelf is making good music, and the MARTIN 00028 STANDARD (as Eric Clapton guitar 00028 EC) is ready to go...

 

 

 

 

 

 

 

 

 

 

 

 

 
 
 

 

 

 
 
 

 

 

 
 
 

 

 

 
 
 

 

 

 
 

 

 
 

 

 

 

 
 
 

 

 

 

 
 
 

 

 

 
Found at last the FRONTAL INPUT SELECTOR? .. well good on you