diyAB Amp - The "Honey Badger"

[helitim]

Hi Everyone!
I have been quietly reading the forum here after a member from another forum told me about the "Honey Badger". I am excited to build this (along with a pair of Statement II towers). I am hoping to order the boards from DIYA in the coming days. I just want to make sure that I can find/locate quality parts here in Canada for this build! Anyways, I'm sure you will hear from me along the way.

 

[jwilhelm]

Hi Everyone!
I have been quietly reading the forum here after a member from another forum told me about the "Honey Badger". I am excited to build this (along with a pair of Statement II towers). I am hoping to order the boards from DIYA in the coming days. I just want to make sure that I can find/locate quality parts here in Canada for this build! Anyways, I'm sure you will hear from me along the way.

Mouser, Digikey and Newark all supply almost everything needed and deliver overnight.

 

[helitim]

Mouser, Digikey and Newark all supply almost everything needed and deliver overnight.

Thanks! I work on aircraft electrical systems for a living, so I usually just give a list of parts to our "stores" guy, and he sources it. If only it was that easy !

 

[helitim]

jwilhelm: where did you source your power XFMR? most of the comparable options to the AnTek-8445 are selling for approx 250-250 canadian. That seems a little over the top to me :S .

 

[evanc]

That transformer cost $84.00 plus $12.00 shipping to me. I just sent two similar transformers to Canada for $45.00. Cheaper if someone in the states buys and forwards it to you? I could if you need.

How about Primrose. They are more local to you and have a Nice product.
SumR - Richard Sumner Technology:: Primrose

Evan

I now see with the exchange rate option one is not such. Bargain....

 

[helitim]

Evanc,
Thanks for the response. I can't see price Info for sumR, but I will send them an email for sure!

ill keep trying to source in Canada, as you pointed out: The exchange rate is terrible!

 

[jwilhelm]

I've bought quite a few transformers from Antec. After exchange, duties, and being raped by my import broker, I've found triad transformers are comparable in price from Digikey, and at my door the next day.

 

[helitim]

Thanks. I'll see what they have that's comparable. On a side note, I just ordered a new soldering station! All my good tools are up North at my work.

 

[helitim]

evanc: I've contacted Primrose, and they've got back to me with a quote. I am just waiting for clarification on the secondary output voltages, and then will order.
Thanks again for the tip!

 

[evanc]

Yes, they wanted to know if the voltage I asked for was loaded or unloaded....Richard seems very nice.
E

 

[helitim]

In my case it was the value I was wondering about (45-0-45). but now that you mention it, I had just assumed it was an unloaded output V(just what I'm used to at work I guess). Is that a correct assumption? lol

 

[AndrewT]

Transformers are usually rated for mains voltage and the loaded secondary voltage.
i.e. 115/230:0-45, & 0-45Vac
This tells you the input (Primary) is a dual winding that can be wired for 110/120Vac or for 220/240Vac
It also tells you the output voltage from the two secondary windings when a resistor load is attached that draws the rated current.

 

[evanc]

I usually do dual secondaries and two bridge rectifiers. (Pass labs style)

 

[helitim]

Thanks AndrewT, appreciate the clarification!

Evanc: Primrose said they can do a center tap on the outputs for me so it would be wired for 45-0-45.

 

[alcroner]

Question about the Glacfa amplifier on post 1486, its work's with component data?

Regard Alcroner

 

[AndrewT]

Thanks AndrewT, appreciate the clarification!

Evanc: Primrose said they can do a center tap on the outputs for me so it would be wired for 45-0-45.

All dual secondary can be converted to centre tapped,
centre tapped cannot be converted to dual secondary.

Order dual secondary. That allows more flexibility in the way you can use it.

 

[helitim]

All dual secondary can be converted to centre tapped,
centre tapped cannot be converted to dual secondary.

Order dual secondary. That allows more flexibility in the way you can use it.

Thanks AndrewT. I'll do that! Sorry to sound like such a newb. While I pride myself on being an "audio-buff", I do have to admit that most of my electronic knowledge comes from my Avionics background. I don't have as much "bench work" under my belt as I'd like, and its been a long 9 years since college . The majority of my time is spent troubleshooting auto-pilot, navigation equipment, and engine "snags". This being said, I am quite confident with a bit of time, reading, and blowing up(hopefully not) components; I will be fit to speak confidently about amplifier builds

I really appreciate the patience and help you guys are providing!

Cheers,
Tim

 

[helitim]

Chasis

I've seen talk of a member trying a honey badger build in a 3U chassis. I could not find the end result though.I would love to set up my build as compact as possible.

Assuming the height of my XFMR will be okay, does anybody know if a soft start, psuv3, and two badger boards would fit in the 3U chassis?(without heating or interference issues) Or perhaps the 4U is the better option...

 

[jwilhelm]

Bigger is always better with high power amplifiers. You run out of space quickly when building these.

 

[helitim]

Bigger is always better with high power amplifiers. You run out of space quickly when building these.

Thanks!
I'm gonna resist the temptation to make a cheap joke here, lol.

Do you know if the dissipate 4U would be sufficient vs the deluxe model?

I asked this in the vendor forum, but think this may be quicker. The only difference I notice is the aluminum vs steel top/ underside.

I would assume the massive heatsink would be fine for this project on either model chassis(regardless of frame material)?