Realistic SA-150 LoFi mini-amplifier

 

General:

Around 1983 Tandy 'Radio Shack' company came with its Realistic SA-150 amplifier.

The SA-150 has a output power Sanyo IC and specifies less output power: 1,8 Watts /channel.

 

front ^

detail front

 

Owners manual:

click here to download the user manual of the SA-150, (RCA SA-155 version)

 

special futures:

Specifications:

Distortion (THD 20Hz - 20kHz) < 0.1%
at continuous output per channel: 1,8 W RMS.
Speaker impedance: 8~16ohms
Signal/noise ratio: 85dB power amp. section
4 x RCA input, rec. output in back, phono input switchable for magnetic and ceramic cartridge.
Very light and small footprint amp.
Size: 3.5" x 9.25" x 6 7/8" (HWD)

 

Schematic:

 

schematics Realistic SA-150: click here

 

Modifications:

You may replace some capacitors and resistors in the power supply and power rail.
This amplifier may use a Sanyo IC module LA 4440 in the power amp. section.
The amp can be modified to a 2x 6 Watts RMS amp.
 

interior version 1 ^

 

interior version 2 ^
 

Updated interior version 3^

 

PCB  and IC ^

 

Backpanel ^

Examples of the modification  ^ V

Datasheet of the Sanyo IC LA4440 click here to download or view.

 

Sound:

The sound is good.

Box to ship it in ^

 

© Hans Hilberink - PE1MMK ® 2003 - Last update: 10-10-2016.