Complete Preamplifier DIY Line Amp, RIAA EQ. Moving Magnet MM. Moving Coil MC

Complete Preamplifier DIY  Line Amp, 

RIAA EQ.

 Moving Magnet MM

 Moving Coil MC

Vox AC30 AC30/6 TB Guitar Tube Combo Amplifier Repair

18W EL84 - GZ34 Tube 12AX7 Guitar Amplifier Project

Guitar Head Amplifier 18W  using EL84 pentode and old style octal GZ34 rectifer 

18W Marshall Style Amplifier

Chicken Head Knobs 

Sony PS-X65 DD Turntable Quartz X TAL-LOCK System Full Electronic Microprocessor Controlled Magnetic Tracking

My New entry, not working, turntable Sony PS-X65 substitue of other Sony Direct Drive Turntable

 Sony PS-X60. Only better S/N ratio for the specs, but it has more charm.

Speed is correct and Locked, both 33 1/3 and 45 rpm, in manual play it's perfect only a little trouble on the mute switch, easily solved.

In automatic play tonearm doesn't stop and doesn't retun to stop position...

Quartz X TAL-LOCK SYSTEM

It Spinning well!

It look so beautifull..

Automatic actions are guarantee by 2  electronic controlled motors, no mechanicals devices like his predecessor, PS-X60.
The Horizontal motor is used also for the correct Traking Force

There are 2 coaxial "brushless" motors: one for the lift the other,
you can see the coils, for the Horizontal Movement

Cassette Deck Revox B710 mkI vs TEAC V9000 Esoteric vs AIWA AD-F660a

Cassette Deck World 

    80's Example

"Professional"

Revox B710 mkI 

4 Motors DD

ReVox B710 Microcontrolled Cassette Deck

"Audiophile"

TEAC V9000 Esoteric

All AudioGrade Capacitors

TEAC V9000 Esoteric

"Consumer"

AIWA AD-F660

3 Heads, Dual Capstan, Dolby HX PRo, 

ADMS, a lot of Wires....

AIWA AD-F660

AIWA "Spaghetti Made"

Sony PS-X60 Direct Drive Turntable with Denon DL-103 MC Cartridge

Sony almost top turntable PS-X60 as substitute of my Techincs SL-1410

My New Sony Turntable

Sony PS  X 60 Direct Drive Turntable

It only needed the tonearm lift adjustment

Added to Sony Tonearm PUA-7 my MC cartridge: Denon DL-103

Sony PS-X60 - PUA-7 and  Denon DL-103

Beautifull Tonearm Sony PUA-7

Big Sony Made in  Japan Platter

Look inside big Sony PS X 60:

Inside:  Electronic Boards, Motor, Power Transformer

Not Working Cassette Deck AIWA AD F660 Repair

Not Working Cassette Deck AIWA Repair.

3 heads, 2 motors (1 for capstains, 1 for reels)
Closed loop dual cpastan, Dolby B, C HX Pro, Bias adjustable. 
ADMS Automatic DeMagnetizing System

Trouble: In Play Mode Capstan Correctly Work but tape go out, Reels don't go

Repair: Not mechanical problem, but electrical, in Power Supply zone; a lot of defective soldering joint!

AIWA AD-F660 Not Working

AIWA DX R&P Heads , Dual Capstan

AIWA Mechanical Detail Dual Capstan Big Motor

Bottom Layer, Power Supply Zone

Defekt

REVOX B710 Professional Cassette Deck

Deck Inside......

Inside view REVOX B710: 4 motors, 3 heads, Dolby B

A Lot of Leds in Meters

Gorgeous, Red Leds, Peak Reading Meter REVOX B710

B710 & B226

Revox Family Pic