Class D value for the money

[eispanzer]

Hi guys,

Sorry to bother you with my "problem" here; I feel like doing my own customized amp; I did a bit or research and I cant't decide wich chip should I use; I don't want to spend much money, but, at the other hand, I dont want to build something not worthy.

I have this speakers:
Energy Audissey A3+2

This are the specs:
Frequency Response: (+/-3dB) 30Hz - 25kHz
Crossover Points: 1.8kHz
Room Efficiency: 91dB
Impedance: 6 ohms nominal 4 ohms minimum
Recommended Amplifier Power: (<10% Clipping) 30 - 225 watts RMS/CHNL

For what I've seen, and if I had to make a decicion without any possible help, I would go for the IRS2092 or the TK2050, but I will be open for new sugestions

I'm familiar with soldering, drilling and so on, and so on, so I don't consider myself a rookie...

Any possible help I would be much gratefull

Forgot to say that the speakers are "Bi-wire high level", so I would want to build an amp capable of delievering this

Thanks in advance,
Dave

[nigelwright7557]

Visit International Rectifier Home Page - Flash Detection

They have loads of datasheets, application notes with pcb layouts that work !

I decided to go the hard route and design my own pcb's and had to go through a couple of revisions before I got it right.

The 2092 is fussy about layout, decoupling and power supplies.

[MrSlim]

Originally Posted by eispanzer

Hi guys,

Sorry to bother you with my "problem" here; I feel like doing my own customized amp; I did a bit or research and I cant't decide wich chip should I use; I don't want to spend much money, but, at the other hand, I dont want to build something not worthy.

I have this speakers:
Energy Audissey A3+2

This are the specs:
Frequency Response: (+/-3dB) 30Hz - 25kHz
Crossover Points: 1.8kHz
Room Efficiency: 91dB
Impedance: 6 ohms nominal 4 ohms minimum
Recommended Amplifier Power: (<10% Clipping) 30 - 225 watts RMS/CHNL

For what I've seen, and if I had to make a decicion without any possible help, I would go for the IRS2092 or the TK2050, but I will be open for new sugestions

I'm familiar with soldering, drilling and so on, and so on, so I don't consider myself a rookie...

Any possible help I would be much gratefull

Forgot to say that the speakers are "Bi-wire high level", so I would want to build an amp capable of delievering this

Thanks in advance,
Dave

I know it's somewhat less DIY to buy a prebuilt module, but these IRS2092 based modules L15D or L20D are so cheap, and many have used them successfully, that it's hardly worth the effort. Check for either of them on "The Bay"

[eispanzer]

Thank you all

So, do you think this based 2092 models are worth a try?

[MrSlim]

I already have a pair of L15D's that I'm waiting for a power supply for from Connexelectronix, so yes..

[hilli_billi]

Hi,
I took the gerber files for IRAudamp7s from IR-site, let 4PCBs make and built it with toroids for the output filter. Sounds very good.
You can buy an exact clone of this IR reference design in the bay for around 50$.
Lately I bought L15D from the bay. It's very similar to the original, but without
protection stuff. It's fun to solder it, worked at once. Sound, power not tested yet.
I even re-designed L15Ds layout for toner transfer methode, but not tested yet.
The layout of L15D looks real good.
regards

[eispanzer]

Thanks once again guys

By the way: I just discovered the LM4780, do you think this chip amp is better than the others?

Thanks once again

[eispanzer]

I'm going for the LM4780; I just needed to know what would be best to do:

1-Balanced mode
2-Non-Inverted mode
3-Inverted mode
4-Bridged mode
5-Paralleled mode

I'm planning on using 2 chip amps (2x120W) instead of one (60W)

I would like to know as well if it is possible to add a Control volume and a line input, as I have 3 devices I'm planning to use with; And what about a speaker protection and a rectifier, do you guys think I should implement one?

Thank you once again
best regards,
Dave