Which board, or assembled power amp, are you guys using for tweeters. F.ex. B&G Neo3.
Preferable with gain adjustment. Is TDA7498 ok (and which PS), any better suggestions?
The easy way out is perhaps a small Nad, with pre-in, (ex 326bee) but then it's not diy : )
Will a good class D or chipamp do a better job?
Preferable with gain adjustment. Is TDA7498 ok (and which PS), any better suggestions?
The easy way out is perhaps a small Nad, with pre-in, (ex 326bee) but then it's not diy : )
Will a good class D or chipamp do a better job?
A, perhaps stupid, suggestion: what about a class AB amplifier for the tweeters?
The reason: The performance weakness of a class D amplifier is the high frequencies where the THD increases importantly. Further, for the tweeter you need little power to balance the sound. So, a small high quality class AB can do the job very well with an electronic cross-over. As a suggestion, a TDA7850 based amplifier with 0.006% THD and a 12V supply.
Am I just silly here?
The reason: The performance weakness of a class D amplifier is the high frequencies where the THD increases importantly. Further, for the tweeter you need little power to balance the sound. So, a small high quality class AB can do the job very well with an electronic cross-over. As a suggestion, a TDA7850 based amplifier with 0.006% THD and a 12V supply.
Am I just silly here?
i want to tell you something about THD
this THD parameter is not the major thing that need to put at the first place when choose amplifier. when i design any Power stage the THD is not my main concern.
you can find at ebay lots of pcbs that will give you very good performance and stability. i have also my own so i know that you can get it.
this THD parameter is not the major thing that need to put at the first place when choose amplifier. when i design any Power stage the THD is not my main concern.
you can find at ebay lots of pcbs that will give you very good performance and stability. i have also my own so i know that you can get it.
The TDA7850 can handle 18V, thus 36W in 4 Ohm. If you want more, a STA540 can handle 22V. That leaves 50 Watt in 4 Ohm (0.02% THD).
Eventually, see the navin posting:
Choosing wattage for woofer, midrange, & tweeter
Eventually, see the navin posting:
Choosing wattage for woofer, midrange, & tweeter
Last edited:
The Neo3 can handle 20W RMS and max 40W (and is not very efficient), but a little headroom is always nice, so at least 50W as the amp I linked to.
(I have a little plan on using it as a bass-amp for small 5" woofers if it's not good enough for the tweeters soundwise. Therefore I will not go under 50W. That's plan B, but of course I would prefer to hit the target first time.)
Last edited:
Motronix spam post removed. Posting commercial ads to the general forums is a violation of forum rules.Read a lot, and forgotten the most : ),
but narrowed it down to these:
1. Hifimediy T2
2. TPA3251 or this
3. AA-AB32281
With some MeanWell 36V.
Comments?
but narrowed it down to these:
1. Hifimediy T2
2. TPA3251 or this
3. AA-AB32281
With some MeanWell 36V.
Comments?
- Status
- This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.