Hey

just wondering how the burr brown upgrade chips for the tru tech t series amps work and do they make the amp sound better or more powerful or what?

Are they a worthwhile upgrade for a tru tech amp?

Cheers people
Adrian

class T actually does stuff (signal processing) in the digital domain (unlike class D) - so I assume the "burr brown" upgrade simlpy refers to swapping out the AD converters used to switch between the analog and digital domains to burr brown components.

In effect it'd be like buying a head unit with burr brown DACs vs one which doesn't - can you hear the difference? (ok so that's going from dig -> analog but )

The fact that the amps output depends of the accuracy of the AD coversion I guess means you want a pretty accurate conversion :shrug:

what's the price of the upgrade?

(btw this is all speculation as i'm not actually familiar what the "burr brown" upgrade is specifically!)

There's a good link about a how tripath (true class T) works HERE

BLOODY HELL

I just assumed T-Series meant they were classT!!!!!! but they're AB

In that case i've got no idea wtf the burr brown upgrade does? probably just higher quality output components? (hand picked matched pairs or something) in which case you probably won't hear the difference I imagine as I doubt TruTech use any dodgy crap in the first place! (there'd have to be a fair degree of quality difference between output components to hear the difference in audible frequency range)

I was reading your first post and wondering what you were smoking...

anybody know for sure...?

The bb upgrade is an input stage IC upgrade.
It helps the midrange freq's between 200-2000hz.

From what I can tell, it helps maintain overall linearity.
I noticed that the midange range and highs a bit smoother
with the BB chips than with out.

how about the AD chip instead leon?

On the Copper? I delivered one yesterday to a local customer with the AD chips instead of the std BB chips. The AD chips are supposed to enchance the midrange a bit more while the std BB are supposed to be a bit more mellow.

I've asked this customer to bring the Copper back once he's used to it and we'll swap back the BB and see...

Bye,
Mo

sorry maybe im mistaken, but i thought there was another upgrade that could be had for the t-series besides the burr brown

ah well

so is the audible difference for the t series amps with bb chips considerable or not really.

would they suite styles of music such as metal and rock.

thanks

I'd say that the difference would be considerable.

One problem Adrian, the upgrade has to be done by TRU USA (on the T series amps - reason for this is after the upgrade, the amps have to be QC'd again).

Have you decided what amp you are going to get for your sub yet?

Bye,
Mo

Yes, considerable in the warm fuzzyness stakes. Not so considerable in the audible department. Seriously, if its so much better, it would have been done in the first place, since I don't think the Tru Tech are really half assed amps.
Audible tweaks in electical equipment are usually only done to solve major engineering oversights, I doubt that is the case in this situation.

There are 2 reasons that I can think off why its a benefit for the end user to have this choice of upgrade 'after sale'.

1) Cost. The up-grade components cost a lot more than the 'std' components.

For example if the amps were built using upgraded parts:

Say to upgrade a 'std' T2.100 costs $20 additional (taking into account that the cost of the std parts have been offset) and lets assume that the cost of a STD T2.100 is $100 and take the rest of the calculations as assumptions.

STD T2.100
Cost $100
Import into Australia add 10% : + $10 (total is now $110)
Add another 10% on top of that for margins : + $11

Consumer pays total of $121.

Built as UPGRADED T2.100
Cost $120 ($100 + $20 for the upgraded parts).
Import into Australia add 10% : + $12 (total is now $132)
Add another 10% on top of that for margins : + $13.20

Consumer pays total of $145.20.

Difference ($145.20 - $121) = $24.20

If the consumer buys the std amp and chooses an up grade, the charge is still only the additional $20 not $24.20... Consumer saves $4.20.

2) If the consumer wants to buy 2 T2.100 amps - one for the front speakers and another for the sub, then it only makes sense to upgrade the front speaker amp as the upgrades wouldn't make a difference to sub frequencies. In this case the consumer would have paid the extra $ 24.20 on the sub amp wich is of no benefit in that application...

Bye,
Mo

Sorry. but your numbers don't prove anything because they: (A) are completely different to the real numbers

When you are talking about pricey amplifiers, the improved component will not add that much % to the price. You also expect that all of the parts have not been compromised significantly just to save a couple of dollars.

(B) Your example results in less margin, when in reality it will be the same, or more.



Therefore, if the amplifier is upgraded after it has been produced, the total cost of the improvement will cost MORE than if it were built with that part originally.

Noted. Was just trying to explain it as I saw it - was not trying to "prove" anything.

And Fyi, in "real numbers" you'd be very surprised how little the upgrades cost the purchaser!



No, I don't expect that at all, thats why any upgrades are done by the same person who builds the amp and fully tested again.



No, in reality the margins will be less if the amp is sold for the same price...like I said :





Yes, thats why I said : the $ 20 extra was the extra cost of the upgraded part less the cost of the std parts.

Bassaholic, I understand your point - you're saying that the upgrade is not worth the price (Btw, do you even know how much the upgrade costs?) as Tru are excellent products and that the upgrades won't make a difference to sound. Correct?

We on the other hand are just providing the consumer a choice to have the upgrades done at a nominal fee to improve the performance of the product.


Bye,
Mo