Dayton Audio DTA-2.1BT

[Brian Steele]

There's this unit. Adjustable sub LP and "I believe" the little black switch between the pots selects whether the mains have a HP that follows the sub control. No BT, remote or case (you could add a BT module externally).

I have not tested this. but it is on my list for this winter ...

[ATTACH=CONFIG]n1355409[/ATTACH]

That does look interesting. However, implementing the filter adjustments as external pots does dampen my enthusiasm for it. I don't want some eedeeot fiddling around with those knobs and putting my speakers at risk trying to reproduce low frequency signals they were not designed to produce - that's why I prefer the filtering implemented as internal pots that you have to go through just a bit more trouble to adjust than just turning a knob on the front panel.

I just thought - wouldn't it be sweet if the filtering was implemented via DSP? . It would probably add too much complexity to what's basically positioned as a basic 2.1 amp...

[Dropcarve]

This is the PE branded DTA 2.1 I believe from from Shenzheng Cavins Technology Co.,LTD (aka Douk Audio)

Found this on another site. Looks like the Dayton.

[Brian Steele]

Looks to be the same amp.

It does look like it. The "floating" cap near to left of the first picture is not really impressive - maybe they didn't have enough space on the board to fit it? I doubt that it would make difference to the amp's performance anyway. Interesting choice though to not solder the three op-amp packages near the front of the board - I wonder what drove that choice..?

[Millstonemike]

Looks to be the same amp.

• -Adopt high-fidelity 4.0 CSR8635 Bluetooth module.
• -Adopt original TPA3116D2 chip 2 as a high power amplifier
• - MCU using machine control, simple and quick to use

Product parameters:
Input: Bluetooth 3.5 4.0 RCA analog simulation
Output: 2.1 channel (left + right channels + subwoofer)
Frequency Response: 20HZ-20KHZ machine
Subwoofer cutoff point: about 180HZ
Impedance: 4-8 Ohm
Maximum output power: left and right channel 50W / 4 ohm 25W, 8 ohms, 4 ohms subwoofer 100W 8 European 50W
Dynamic range: 98DB
SNR: 86DB
Power: 0-100W
Size: 132MM long X108MM deep X32MM high

This is the PE branded DTA 2.1 I believe from from Shenzheng Cavins Technology Co.,LTD (aka Douk Audio)

[Dropcarve]

Looks to be the same amp.

• -Adopt high-fidelity 4.0 CSR8635 Bluetooth module.
• -Adopt original TPA3116D2 chip 2 as a high power amplifier
• - MCU using machine control, simple and quick to use

Product parameters:
Input: Bluetooth 3.5 4.0 RCA analog simulation
Output: 2.1 channel (left + right channels + subwoofer)
Frequency Response: 20HZ-20KHZ machine
Subwoofer cutoff point: about 180HZ
Impedance: 4-8 Ohm
Maximum output power: left and right channel 50W / 4 ohm 25W, 8 ohms, 4 ohms subwoofer 100W 8 European 50W
Dynamic range: 98DB
SNR: 86DB
Power: 0-100W
Size: 132MM long X108MM deep X32MM high

[Millstonemike]

There's this unit. Adjustable sub LP and "I believe" the little black switch between the pots selects whether the mains have a HP that follows the sub control. No BT, remote or case (you could add a BT module externally).

I have not tested this. but it is on my list for this winter ...

[howard]

Geoff, Hats off to you for coming out to talk with the guys that could be using the product. To me, that is what separates one supplier from another.

[Millstonemike]

I'm a bit confused by this comment, as I have been personally using this amp for about 2 months now, and lacking bass is not something I would say is a characteristic of this amplifier. We also demoed this amplifier in several different installation where there was no such occurrence.

Best Regards,

Geoff Schneider

I don't have one to measure. As I said "early reports". The TT member with the issue recalls the amp had better bass when he first tried it and suspects the particular unit. I believe he is going to return it for a replacement to make sure. We shall update when we know better.

[Liberator of Magic Smoke]

Creating a similar amplifier with some of the features you listed and perhaps more could be considered pending the sales and the reviews of the current model.

All due respect and all, but isn't that like saying, "If the Fairmont sells well, we might look at making a Mustang"?

This amp is on my "maybe" list for a project or two, but in its present form it's only interesting to me as a two channel stereo amp for boomboxes and such things. I would ignore the subwoofer channel. As I said in that other thread when this product was announced, there is an untapped market for something like this with the features Brian Steele mentioned. There are 2.1 amps available, but not many as you say, and no one seems to get very close to the sort of thing we here on this board want. We can buy no end of crap off fleabay and hope for the best, but I'd rather not. I'm still using old RF and MTX car amps for portable things because of the easy adjustments of filters, but they are heavy, cumbersome, and inefficient outside their intended use. They just happen to sound great and have the features I want.

Somebody will crack this nut, and I hope it's PE.

[Brian Steele]

This is absolutely something we can look into for a future expansion of the line.

Please do! I'm still looking for the best solution for at least two projects I'm considering at the moment, and the adjustable filter points for the sub and main channels (and if possible an additional adjustable HP filter on the sub channel to remove frequencies the attached subwoofer would have difficulty playing) would make this the perfect solution. These features can be added for very low cost as they should involve just a few extra small cheap components on the board.

As for the remote control, to me that's a "nice to have", rather than "essential". I suspect that it would require a more involved redesign, and in any case, if I'm going to be streaming to the amp via BT, I can adjust the output level from my smartphone (or other BT source) and even have better control over the overall response via an EQ app on the BT device.

[donradick]

Geoff -

In general, I expect to see specs, and will not spend any money on any audio equipment without basic information.
Here is what PE lists for the current 7498 special:

Specifications:

[ernperkins]

I found a 2.1 amp board on that large auction site that has the controls I have been looking for: adjustable 0.1 LPF and volume, adjustable 2.0 HPF and volume and master volume. You can get versions with and without Bluetooth 4.2; the price difference is about $5. Haven't bought it, but sounds interesting. I don't know the rolloff slopes, but would hope for 12 dB/octave. Still looking for a version that comes with a case.

[Dropcarve]

The other members actually stated they would pay more for the adjustable LPF, which I agree would be a nice feature, but would indeed cost more to add.

Best Regards,

Geoff Schneider

I would pay more for improved features as well. I was excited to see a Dayton 2.1, that's what I'm looking for. It's just not what I hoped for.. I'll wait for an improved version.

[ge_off_me]

Hi Geoff,
I am part of the "large portion" of your customer base, a novice. I have to agree with the forums experts. @ $80 I would expect adjustable low pass filter, 180hz is too high. A high pass filter would be helpful and also a remote.

The other members actually stated they would pay more for the adjustable LPF, which I agree would be a nice feature, but would indeed cost more to add.

Best Regards,

Geoff Schneider

[Dropcarve]

I agree that there are absolutely features that would enhance the usability of this product for users on this forum and other tech-savvy individuals, but this product is nearly ideal for a large portion of our customer base.

Creating a similar amplifier with some of the features you listed and perhaps more could be considered pending the sales and the reviews of the current model.

Best Regards,

Geoff Schneider

Hi Geoff,
I am part of the "large portion" of your customer base, a novice. I have to agree with the forums experts. @ $80 I would expect adjustable low pass filter, 180hz is too high. A high pass filter would be helpful and also a remote.