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Old 14th May 2004, 06:42 PM   #1
owel is offline owel  United States
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Default Where to buy Tripath chips in US?

Does anyone know where we can buy Tripath chips here in the US?

I'm talking specifically about the TA3020... and others.

Thanks!
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Old 14th May 2004, 07:31 PM   #2
KCHANG is offline KCHANG  United States
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Location: San Jose, CA, USA
Default Consider getting a Blaupunkt car amp

Hi Owel,

One of the more economic way to get the Tripath TA3020 chip and implement it is to actually buy an amp that uses that chip. I bought a Blaupunkt car amp that uses the TA3020 chip for around $120, and it even has built-in filters. Blaupunkt has several models using that chip. See,

http://www.tripath.com/010601a.htm

All that is needed to run the amp is to connect a 12VDC power supply with enough current output to it. I used a car battery with a 1.5A charger ($17 at Walmart) connected to it all the time. That was much cheaper than buying the Tripath evaluation board.

Kurt
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Old 15th May 2004, 02:34 AM   #3
owel is offline owel  United States
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Default Amp

anyone else?

I emailed the company but they haven't responded to my email.
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Old 17th May 2004, 11:25 PM   #4
dmason is offline dmason  United States
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Default Blaupunkt Tripath

KChang,

Could you comment on how the Blau-Path amp is working in a home environment for you? Can you remove the analogue front end stuff? What speakers are you powering? Would like to hear your assessment on battery power, etc.
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Old 18th May 2004, 02:55 PM   #5
KCHANG is offline KCHANG  United States
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Hi dmason,

The Blau-Path amp worked very well in a home environment. The sound was very good, but was somehow different from the sound of the Gainclone I built. I did not bother with removing the analog front end stuff, or taking out the noisy (electric-wise)power supply. I used the Blau-Path car amp for only a short while, and then bought a Panasonic digital receiver. Interestingly, the panasonic receiver sounded more like the Gainclone. I ultimately went back to the Gainclone, which is now powered by two car batteries.

I feel that the panasonic receiver is a better deal than the Blau-Path amp. The panasonic receiver has amps for 6 channels and many digital and analog inputs, and the digital amps therein accept direct digital audio input. It is also ready for use out of the box, while with the car amp you have to provide at least a battery with a charger. Soundwise, I don't think the panasonic receiver is inferior to the car amp. Nevertheless, if you want to try a Tripath 3020-based amp, the car amp is a reasonable and perhaps cheapest way to do it.

Kurt
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Old 18th May 2004, 03:23 PM   #6
janaf is offline janaf  Sweden
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Default Tripath chips

Well, I have some TA2022 that I could sell. I also have PCBs for the TA2022 (about 2x100W, 4 ohm from +/- 32V). They were made from Tripath drawings for the Evaluation board and Reference board (i have both). The boards are double sided, double weight copper, through hole plated, solder mask / component printed. I had a few dozen of each made. I could sell them for $12 for the Reference board PCB and $15 for the Evaluation board PCB. The difference between the two is that the Evaluation board has cirquitry for automatic balancing of the outputs, and speaker output relays, the reference board has manual balancing. I guess I could also sell TA2022 chips for $30 each, if you buy them with boards. Add $12 for shipping world wide. There are a few high spec components on the board that I could also sell. The other components are fairly standard SMT resistors, caps and diodes, that can be bought from any major supplier. I guess you could get those from me to.

I am also thinking of having some PCBs made for the TK2350, 2X300W chip. Drop me an email if you are interested.
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Old 18th May 2004, 04:05 PM   #7
janaf is offline janaf  Sweden
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Default TA3020 and TR2350

Some comments on the TA3020 and the TR2350.

These two use the same signal processor, according to Tripath. The TA3030 is in a single chip while the TR2350 is made in a dual chipset, probably for manufacturing/economic reasons. Therefore the TR2350 is a lot cheaper than the TA3020. The TR2350 also has a bonus onboard SMPS MOSFET driver voltage supply, referenced to the negative supply. This would have to be made externally for the TA3020. Otherwise, the two are very similar, and perforamce data is more or less identical.
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Old 18th May 2004, 04:29 PM   #8
dmason is offline dmason  United States
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According to Tripath, soon they will be releasing Eval boards for their new "Godzilla" chip amp power supplies, with an even simpler and more efficient topology. I will think about waiting for these. As for building from the ground up, the current eval boards would do; I am more interested in the 2050 board, 50 watts, and has no requirement for 5V secondaries.... seems to be the best balance for my requirements.

JVC, which has been a Tripath client for some time, now has something called "Hybrid Dual Digital Feedback" amplifier design, which, in a vague description sounds very likely to be highly similar to the Tripath Delta-Sigma thinking, as its title would also suggest, --has just released its RX-F10 model, a $300 6X100@6Ohm receiver. Interestingly, they have included EQ in the digital domain, the sonic signature of its older brother, the RX-ES1 was surprisingly similar to Tripath, very, very smooth, almost SET-like, making even the cheeezy included speakers sound great.

The coming months are going to be interesting, to say the least.

I would however be interested in a ready to go solution with few additional requirements, of about 150 watts X2.
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Old 18th May 2004, 06:25 PM   #9
janaf is offline janaf  Sweden
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What they say about the "Godzilla" or TDA2075 / TDA2125 is that they will be using P-channel Nchannel MOSFETs, making the FET driver cirquitry simpler with a somewhat smaller external component count. Efficiency will be slightly lower as the P-channel MOSFETS are used, instead of N-channel. External 5V is still required, and 10V as well. They are rated at 2x75 W (TDA2075) and 2x125W(TDA2125) at 8 ohms. Do you know if the JVC design their own or Tripath based?
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Old 18th May 2004, 06:57 PM   #10
dmason is offline dmason  United States
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My gut tells me it is a Tripath item. "Hybrid Digital Feedback" is a nice clean turn on the Tripath way of doing things. Knowing they have been a big-time licensee for some four years time only furthers my speculation, or wishful thinking. Even in a noisy mass-fi outlet, the sonics of the RX-ES1 sounded more than reminiscent of my ZR1000 at home. These amps can make cheap speakers sound far, faaar better than they have any right to I realized.

What might make the RX-F10 truly special is its ability to do 7 band EQ in digital, and it also has something called "all channel stereo," which would hint that JVC has been reading the Panny 45 audio threads and offers this set-up for bi/tri-amping. If so, the RX-F10 could well be this year's little monster deal, and I am hoping it might make a good companion piece for the Behringer 24/96DCX, giving me a great opportunity to start from scratch, thinking: open-baffle two way + sub.

New to this forum, I am also interested in finding out about what types of speakers you people are using with Tripath amps, as I am changing listening rooms and will be seeking thoughts on speakers for a 14X14' irregular, using TVC/Carver ZR for now. Thanks for your input
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