140W power amp with 6xOPA549

[Ila]

Hi !

From a commercial project I have some pcb`s in stock which might be interesting for you.

As you can see from the attachment, it is a mono design with 6x OPA549 per channel. The circuit operates as a " triple - bias - symmetric - amplifier " allowing the OPA549 to reach the optimum performance.

If there is sufficient interest, it is possible to organise a non profit sale.

Ivo Linnenberg

LINNENBERG AUDIO

[motherone]

I'd be interested. Seems like it could be a cool project.

[ANTHONY2181]

I'd be interested in 4 boards maybe more. How much are they ?The board looks great.What does the amp sound like ?

Regards

Anthony

Ant2005uk1@hotmail.com

[zeonrider]

Hi ! where is schematic. The PCB looks GREAT.

[Ila]

Hi everbody !

The schematic isn´t missing. Since it was a commercial project, I won´t put all the details here on the internet. All the needed papers like schematic, stuffing and drilling of the heatsink comes with the pcb.

I can assure you that it sounds great, you won´t be disappointed.

Here are some further details ( instead of schematic) :
- true balanced operation, even from a single ended input
- dc offset servo circuit
- Imax = +/- 20A continuous
- THD = 0.005% (10Veff 4 ohms)
- noise = 110 dB(A)
- CMRR = 80 dB
- innovative biasing scheme that eliminates crossover distortion
- high speed rectifiers on board, just need a transformer
- supply voltage regulated for all sensitive gain stages
- protection against overload and overheat
- linear damping factor, stable with all loads
- stand by circiut via 10x header possible

I wish you all a merry chrismas !

Ivo

[HIPCHECK]

i have interest in buying this pcb. please email me if any pcb's will be sold.

[bigmike216]

I'm also interested.

[odysseybmx414]

im definitely interested i love these chips

[pinkmouse]

I might be up for a couple as well.

[Dominick22]

I would probably buy depending on price. I am still in the amateur (do it to learn) phase.

dominick22@comcast.net

let me know-thanks,
Dominick