Pictures of your diy Pass amplifier

[peppennino]

hope A1 isn't powered on

Here it was nicknamed "bistecchiera", grill

 

[nicoch58]

Talians

 

[Zen Mod]

Talians

yup

and those being resident in Papaland, are being especially wakoo ones

Here it was nicknamed "bistecchiera", grill

having lazy 12cm fan on top, and getting rid of mediocre line preamp stage, that amp can easily be Mana from Heaven, with proper spks

so =- if you see Dodo one for peanuts, snatch it ...... it can be repaired for peanut money too, and can bring many hours of foot-tapping

what's worth inside - OS, is brainchild of Tim deP.

Man had a Stance, always ..........

 

[peppennino]

I remember a cheap opamp in pre stage...

 

[Zen Mod]

Mark Henessy had pretty comprehensive site about A1 and cousins

most of things he wrote there are correct

cheapness of OP wasn't main culprit, arrangement/schematic was

 

[primare]

Finally, after much work and expense, I finished my "mini" Aleph monoblocks.
Very happy with the results, they sound great.

View attachment 986162

View attachment 986163

View attachment 986164

Sound Demo

Sound Demo - YouTube

 

[mbrennwa]

117 VAC input?

 

[SoaDMTGguy]

Sound Demo

Sound Demo - YouTube

What cords are you using? I like that white sleeving/shielding.

 

[primare]

117 VAC input?

Right.

What cords are you using? I like that white sleeving/shielding.

Cables are:

Signal & USB cables are from in-akustik. Home :: in-akustik

Speaker and power cables are from Supra SUPRA Cables - Experience High Quality HDMI, DVI and HI-FI Cables & adapters.

 

[SoaDMTGguy]

Oooohhhh… I like the Supra cables. There is a very high chance I will be ordering some in the future.

 

[batty]

yup

having lazy 12cm fan on top, and getting rid of mediocre line preamp stage, that amp can easily be Mana from Heaven, with proper spks

so =- if you see Dodo one for peanuts, snatch it ...... it can be repaired for peanut money too, and can bring many hours of foot-tapping

what's worth inside - OS, is brainchild of Tim deP.

Man had a Stance, always ..........

I paid $100AU for it, about $70US, its rusty at the sides, but in great working condition.

 

[Zen Mod]

great!

as I said - get rid of preamp stage, harden up (a little) sensitivity/gain ....... and enjoy in little wonder

 

[batty]

Or use an external pre straight to the power amp section maybe my B1k as my ten years after B1 is unity gain.

 

[Zen Mod]

yup, external pre implies

 

[peppennino]

Heere the schematic:
Musical Fidelity A1 Channel Imbalance
(volume on the feedback? )

You can simlply remove R4 and place input there...
I've done the same thing with my Inca Claymore (feed by B1)

 

[Zen Mod]

R4 must stay in place, to shunt input caps
no nasty surprises when connecting interconnects

 

[peppennino]

Gremlins strike again

 

[Rudi_Ratlos]

Doing a "DIY-enclosure" makes fun

Gentlemen, this is "My ACA".

Regards - Rudi_Ratlos

 

[Zen Mod]

Fugly!

 

[Triodethom]

Gentlemen, this is "My ACA".

Regards - Rudi_Ratlos

Enjoy Look's fine to me .