Need Your Advice on Developing a 5.1 Channel DAC

[jogama]

Fosi is developing a 5.1 Dac pre-amp for home cinema:

https://www.audiosciencereview.com/...advice-on-developing-a-5-1-channel-dac.48502/

The picture proto 2 below shows the concept design of this product. Besides the I/O, it will also have/support：
1. remote control
2. capable of decoding Dolby True HD and DTS HD
3. 100W*3(CEN、FR、FL channel）+50W*2（RL、RR channel）
4. display screen
5. two HDMI eARC interfaces

Proto 1 :

Proto 2 :

If you have ideas to help the engineers and technicians at FOSI AUDIO have developed this home cinema pre-amplifier.

 

[jogama]

I think the pre-amp needs :

• 4 HDMI inputs mini.
• 2 or 3 RCA inputs
• and 1 coaxial and 1 optical.
• Sub output
• 1 calibration microphone for acoustic correction (e.g. ARC, Audyssey) would be a big plus.

The question also is pre-amp or amp?

 

[D1N0##]

I'm not into multi-channel so I wouldn't know

 

[jogama]

Is the project progressing, do you have any new information?

 

[damodarollu@gmai]

give minimum 600wt output for 5.1channel. and give additional ports for 2 speakers for Dolby Atmos. HDMI eArc, Bluetooth, no heating issues

 

[delaforetnoire]

Audio calibration mic is mandatory !

This is a TRUE product here.

 

[BorisdeFloris]

I would vote for a Pre-Amp, let people choose themselves their amplification.
Dolby Athmos should be supported, so 7.1 at least.

Separate from that I suggest developing a high quality Amplifier with at least 5 channels, level like Fosi V3 with PFFB. With pre-amp separated you give the public the option to futurewise just exchange it to newer standards.

 

[RustyDog]

My vote would be for the preamp aswell. 5.1 . Then choose your amps based on what you need. I would also keep the psu external - saves space and also allows for psu sharing with other devices. (Y leads )

 

[Kristjant]

I think the pre-amp needs :

• 4 HDMI inputs mini.
• 2 or 3 RCA inputs
• and 1 coaxial and 1 optical.
• Sub output
• 1 calibration microphone for acoustic correction (e.g. ARC, Audyssey) would be a big plus.

The question also is pre-amp or amp?

Agree

 

[Might_Guy]

Hello,
Please consider using the USB as a true class compliant audio input and not just for power, so that your pre-amp can manage a PC either on windows or linux as a multichannel source.
Check out these similar products from ESI Audio (gigaport eX) or Schiit (Syn). Thanks in advance!

 

[IABiD-]

Dac only with addition of xlr is unheard of. it will be a banger!

 

[Charles]

I think the pre-amp needs :

• 4 HDMI inputs mini.
• 2 or 3 RCA inputs
• and 1 coaxial and 1 optical.
• Sub output
• 1 calibration microphone for acoustic correction (e.g. ARC, Audyssey) would be a big plus.

The question also is pre-amp or amp?

Why do we need four HDMI input ports and which devices are usually connected? How many do you think are the minimum required to reduce the quantity?

 

[fcosta]

I would like to see,

HDMI ARC and CEC (i am assuming CEC will allow for TV to control volume)
5.1 Line out
It should also default to 2 channel or 5.1 channel automatically based on received signal. (NO Balogna VIRTUAL 5.1 or emulated 5.1)

Is that possible?
Having the TV control volume would be key.


thanks

Frank

 

[Charles]

I would like to see,

HDMI ARC and CEC (i am assuming CEC will allow for TV to control volume)
5.1 Line out
It should also default to 2 channel or 5.1 channel automatically based on received signal. (NO Balogna VIRTUAL 5.1 or emulated 5.1)

Is that possible?
Having the TV control volume would be key.


thanks

Frank

Certainly

 

[RAJNISH AZAD]

1- First thing first. due to 5 mid frequency channels, those which sounds a lot, subW. needs to be 10 db louder than total sound produced and that sound which has low frequency. hence center and subW vol should be saperated.
2- Second Hdmi(arc) in should have HDMI out too. Cause most T.V.s and hdmi out devices have single out or if more one can receive on one output. Then what about video device.
3- This is my own new idea.....bluetooth still can't transmit more than 2 channels. but if bluetooth transmitter is used for both rear channels than its all solved..How? .. (a) frount 2s and center could have wired connection as they would be near pre amp. and rear would be much farther. (b) there would be an automatic delay ij rear sound due to bluetooth connection
4- and much more to consider , but in cutting cost
Thanks