Post your Solid State pics here

[dinoang]

Honey Badger DIY with help from this forum

Hi, I managed to build my Honey Badger amplifier in April this year (2019). It has been a super amazing journey for me and I really learnt a lot. The sound is amazing. Here are some photos of this journey and some of the videos I have uploaded to Youtube for this amp.

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.

Some videos of the amp used with my Elac Unifi UF5 slim floorstanders.

YouTube

Some test videos of the amp

YouTube

YouTube

 

[nigelwright7557]

Three 1980's Maplin amplifiers.
Maplin hi fi 50 watt amp.
Maplin lateral mosfet amp.
Maplin disco amplifier 225WRMS.
All

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

still working,

 

[planet10]

the videos I have uploaded to Youtube

Those seem to be behind your login.

dave
diyAudio moderation team

 

[inko]

Schema K63:
https://i.imgur.com/i8sDvtV.png

Modified K63, first modul:

 

[inko]

VFA vs CFA

 

[xrk971]

Superb USSA-5 by Vunce:

USSA-5 Build with Review

 

[AudioSan]

5 ch Honey Badger up and running.

 

[osscar]

Congratulations! Very nice and heavy beast !!

 

[AudioSan]

Tnx

 

[kct]

Finally my A5 Tribute is complete. Here are some specs.

Standby power consumption: 1W
Idle power consumption: 35W
Rated output power: 100W @ 8 Ohm
Peak output power: 135W @ 8 Ohm
Frequency response: DC - 200kHz @-3dB
THD: 0.002% @ 20Hz - 20kHz @ rated output power
TIM: below measurement threshold
.

 

[pinnocchio]

@AudioSan
@kct

To the both of you, I'm totally blown away by your skills! Beautiful craftsmanship!!!

@kct, where did you get those A5 Tribute PCBs/Modules. Is it your own design?

Do

 

[zman01]

@AudioSan
@kct

I echo Do' comments - congratulations to you both!

Enjoy!

 

[AudioSan]

Thank you

 

[inko]

A few extra photos

AudioSan and kct: Super work

 

[Fox25]

inko
Nice work with universal PCB and good idea with separated sections.

 

[AudioSan]

Thank you inko

Kct: you say idle current 35W. is that all 5 together?
mine is at about 135+W at idle

 

[kct]

@AudioSan
@kct

To the both of you, I'm totally blown away by your skills! Beautiful craftsmanship!!!

@kct, where did you get those A5 Tribute PCBs/Modules. Is it your own design?

Do

Thanks pinnocchio, AudioSan, Inko, Zman,

Its my own design, transformers and heat-sinks I bought off-the-shelf, and then I designed everything else to fit around these and make up a convenient form factor to fit the case as a whole module (amp + PS). The modules mount on dedicated rails and can be removed for service as one compact unit, if ever needed. Altho I doubt it ever be necessary, I over-designed things quite a bit. 2oz. copper everywhere, from the charge capacitor to the furthest power transistor collector I measured about 30mV drop under full load.

Here is a cool picture I took from the test phase. Soja, find the hot spot.
.

 

[kct]

Thank you inko

Kct: you say idle current 35W. is that all 5 together?
mine is at about 135+W at idle

Woa, 135+W at idle, you must be a millionaire...

Yup, with all 5 channels powered total consumption is a modest 35W when warmed up and with ambient temperature 23 deg. C, as I can't afford a big power bill every month.
Of course this is a little bit temperature dependent, when the amplifier was left off for a while to cool down and with ambient temperature 18 deg. C, I get about 80W total power consumption which then gradually goes down as modules slightly warm up.
.

 

[AudioSan]

Wow.
mine consumes 24W pr ch at idle just in the outputstage. total bias of around 210mA pr ch. +/-56VDC. and then there is the rest of the amp and PSU losses.
Thank god electricity is somewhat cheap over here

 

[palstanturhin]

A few extra photos :

Underside would also be very interesting...???

Excellent caftmanship!