Post your Solid State pics here

[Mooly]

Hi Anatoliy,
Is that a key to switch it on ? What is it anyway ?

 

[Wavebourn]

Hi Anatoliy,
Is that a key to switch it on ? What is it anyway ?

Pyramid-V prototype. 2x80W nominal, Russian military tubes. MOSFET voltage regulators for filaments, screen grids, pre amp. This is a concert version, with grill top and TRS ins/outs. 0 dB input, outputs: 4, 8, 16 Ohm. Transformers custom made by EDCOR USA for 20 Hz - 20 kHz on full power.
Studio monitor version has a rack mount face plate; home stereo version has banana and RCA sockets.

The switch is for safety purposes.

 

[Mooly]

A serious bit of kit then by the sound of it. Very nice job indeed.
Regards Karl

 

[Wavebourn]

A serious bit of kit then by the sound of it. Very nice job indeed.
Regards Karl

Thanks Karl!
It sounds really nice as well; now it works in my living room playing music through phased arrays made for concerts. I forgot to mention, it has a proprietary anti-clipping network with optical compressors. Ever clean sound.

 

[jacco vermeulen]

Looks very nice and retro.

(though i rather spend my time keyhole peeping Veronica at Anatoliy's multi-culti forum, mind you)

 

[Wavebourn]

Retro?
Ergonomically designed things are modern forever.

 

[abacus]

Retro or not, very nice work.
Regards Kreshimir

 

[destroyer X]

Dx Amplifier, still working fine.

Here is a picture.

regards,

Carlos

 

[edfed]

hello!
nice to see a good place.

my amp is very simple, and gives good results.
it works 24/24 everydays since 3 years now.

An externally hosted image should be here but it was not working when we last tested it.

An externally hosted image should be here but it was not working when we last tested it.

 

[geminni]

Hi edfed!
Nice work!

Can you tell something more about your amplifier?

Seeing the IC on input i guess that amplifier works on 2x15V, so it can give 18w per channel

 

[edfed]

no way.
supply is +/-17V serial regulation, up to +/-18V for IC, up to +/-26V from transformer.
Rload is 4ohms

then, p = (16/sqr(2))² / 4 = 32 Watts RMS
if i use it in full bridge configuration, it will output many more.
p = (32/sqr(2))² / 4 = 128 Watts RMS

with only few common components.


the secret is in the power supply.
current limit, perfect regulation, what is 100HZ? i don't know.

4 big condos.
10000µF 40V lsr

 

[dhengkoel]

MF-A1

.my small power amplifier is the clone of MF A1.

An externally hosted image should be here but it was not working when we last tested it.

.the capacitor bank.

An externally hosted image should be here but it was not working when we last tested it.

regards:
gustOmO

 

[gmphadte]

The white wires look like inputs. Why are they twisted...

Gajanan phadte

 

[Bonsai]

laipanda,

wow, very well executed. I have to concur with lineup - beautiful.

where did you get your front plate from?

 

[pirej]

Edfed,

Can You post bigger pictures of amp, can not see the components values. I'm interested in this amp.

Thnx

 

[edfed]

pirej:

An externally hosted image should be here but it was not working when we last tested it.

i don't draw the power supply because it is too hard, and i have it in a harddrive somewhere.

power supply:
2 * 17 V
current limit 2 * 6 A

[message to owner of the board]
why isn't it possible to private message and edit posts?

 

[alex mm]

Motorola 100 w audio amp

..... my new amp from Motorola application note http://i36.tinypic.com/2u76jro.jpg alex mm

 

[stoN_Cold]

Re: Motorola 100 w audio amp

..... my new amp from Motorola application note http://i36.tinypic.com/2u76jro.jpg alex mm

6 output transistors = 100W Nice!!!

Do you have schematic of this Amp, PCB?

Regards zeoN_Rider

 

[stoN_Cold]

Re: Motorola 100 w audio amp

..... my new amp from Motorola application note http://i36.tinypic.com/2u76jro.jpg alex mm

Thanks alex mm, here is linkxp@sezampro.yu

Regards zeoN_Rider

 

[jacco vermeulen]

Motorola AN1308-D from '92