Which AMP Should I Use?

[johnviera]

I am building a portable boombox running on a 12V 7Ah battery. I am powering two 5.25" Coaxial drivers. (93 db sensitivity).

Which amp should I use:

The Dayton DTA-2

The Lepai TA2020

or

The SURE TA2024

I am worried about the voltage requirements for the SURE TA2024. I heard it will perform better at 24V. I a using a 12V power source.

Thanks,
JV

 

[kristleifur]

I'm pretty sure that that voltage spec is wrong for the Sure amp. That chipset only takes about and just over 12V max, like the others.

I would get the 41Hz Amp6-BASIC preassembled. It is recommended by Saturnus in his very well respected and established Boominator design. It is a solid design built with very good parts. Very reliable and you don't get much better sounding implementations of the Tripath chip than this. This is a no brainer.

Link: 41Hz Audio:AMP6-BASIC Assembled

 

[johnviera]

You prefer it to the mkII amp?

How much current does it draw? Is there a spec sheet?

I live in the USA. So the price and shipping is a bit high.

Maybe I can start a prototype with one of the aforementioned amps and then switch it to the amp6 in the future.

Thanks for your reply.

 

[kristleifur]

It is generally regarded as the most solid implementation of the ~12V Tripath amps. However, I don't have personal experience with any of the other ones.

The current draw is much the same as the other amps you listed; There is probably some info on it in the Boominator thread: http://www.diyaudio.com/forums/class-d/104402-boominator-another-stab-ultimate-party-machine.html

At any rate, there is always the supreme rule: Build it wrong, but build it 🙂

 

[kristleifur]

(P.s.: This one by HelderHifi looks better IMO than the Sure / Lepai / Dayton: TA2020 MKIII :: . ... the components look to be beefier. I don't see the price, but it's probably cheaper than the Amp6.)

 

[johnviera]

Yeas. I like the Helder HiFi amps. I sent him an email asking about the price and the current draw of the ta2020 vs the ta2024.