TAA4100A - Bridging or Parallel?

[theseum]

Hi,
I'm looking for a new amp for my NAD model 2's (a 6ohm load, power handling at least 200W) and the autocostruire MC 4x100-m caught my eye. My question is, since this amp (or a similar TAA4100A based design) has for channels, could I bridge them or run them in parallel to get a two channel amplifier which is twice as powerful? I don't know anything about the issues involved.

Thanks very much!

[v-bro]

Hi,

I own an MC4x100, nice choice...

But it's parallel only...
Read about AMP9 (in the link below.....)

AMP9 costs 49 EUR.!

It uses the same chip, and much larger caps! The MC has six 2200uF caps and AMP9 has three 15000uF caps, the rectifier is also much larger power...I just bought the 'low profile' model, still have to build it though....but I suspect it will have more balls than the MC...


Only you will have to solder it yourself...

[ledim]

Soldering the amp9 is actually quite easy (mostly through hole)...the real "difficulty" is to wind the 8 toroids...you don't want to be in a hurry, or you'll lose your finger's skin

Cannot comment on sound quality, as I still have 1 toroid to wind before to completely finish the board

[v-bro]

I used tools to tension the copperwire, made it a lot easier! But the sound is worth it to lose some finger skin for..

I finished building the first one in six hours (but I know the next can be done in about four or less...).

You can see pics of my test setup in the photogallery at http://www.41hz.com

I am 'Micromaniac' on the 41hz forum....

If you post before the end of the year you can win an amp!

[idceng]

Hi there,
I'm new to this forum.
I would like to purchase a fews units of AMP 9 for my first experimental in digital amplifier.
But I could not get thru using the Contact Us page.
How can I get hold of the person in charge? Email preferable.
Thanks for you help.
Best regards
Alvin

[v-bro]

Jan is having a very hard time at the moment because Tripath is not going so well. So he probably has very little time now to answer all his mail. I'm sure if you just order them they will arrive briefly. (I just read from a guy from Chicago that they arrived practically before his soldering iron cooled from his AMP4 build...)

[idceng]

I dun use credit card for my purchase.
I would like to order via Telegraphic Transfer
Therefore, I really dunno how to start the ordering. I would like to purchase 20 pcs of AMP9.
My time is running low, therefore i need to as if Jan had the stock available. I hope to receive it by this week if anything possible.
Therefore i would like to email him abt the detail and the shipping address.
Regards
Alvin

[idceng]

Besides, what is the difference in performance between the low profile caps and the Tall caps?
How abt the transformer use? Both using the same rating of transfomer? 18V?

[v-bro]

Nonono! The low profile version uses 16V buffercaps, so the amp should be connected to nothing more than 14.5Vdc! (well, maybe 15Vdc when well regulated...) So a transformer should output no more than 9Vac I guess.....

The amp produces more power on 24Vdc, but on 12Vdc it sounds nicely delicate and with enough power from the supply the amp can drive seriously low impedance speakers (like esl speakers...).

[idceng]

Still wandering if i can get hold of Jan
At least I would like to confirm my order very very soon.
I had to make decision by these two days.
Anyone can assist me???
Regards
Alvin