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2x150W Amp module for sale

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R

rrobot

Member
Joined 2018
FFA001V3-HB modules purchased. Very much looking forward to testing these - what a great time for DIY at the moment! :)
In the meantime I'll have to think about whether a fan is required for my use case (active PA speakers, although mounted outside the cabinets). Sounds like it may be a good idea as they can get a bit hot?
 
R

rrobot

Member
Joined 2018
Erica.C said:
Agree with you that using the inner codec from ADAU1701 cannot get better THD+N performance, that's why I select the external codec to bypass its inner one.
And, thanks for looking into this thread, with your guys' suggestions/support, give me much confidence in our design.

Thanks,Eric
Click to expand...
This thread is getting pretty long now so forgive me if there's further discussion of DSP in the product pipeline which I haven't seen yet. DSP paired with these amps really is quite an exciting prospect which opens up a lot of opportunities. Cost to performance is of course the major consideration but while the external DAC option looks to have acceptable performance I do wonder if there's any prospect of going a bit higher up the Analog Devices range from the ADAU1701 (eg ADAU1450/51?). I notice the Hypex plate amps now have a few taps (1500?) available for FIR Filters. Having enough taps to at least do phase linearisation at the crossover would be great for active speaker applications :)
 
S

scholl

Member
Joined 2012
Erica.C said:
And, quick update here:

The universal power supply 2*300W amplifier module is ready for the public now :)

View attachment 1222504

View attachment 1222505
Click to expand...
Please tell us more about the speaker protection. Does it have limiting so not to clip? I'm considering these for use on some public address use and don't want a mic drop to blow the amp or speakers.


What impedances can it drive?

Does it use the same input boards as the 2 by 150Watt modules?


What is the sinad?


Thanks, Scott
 
E

Erica.C

Member
Joined 2005
scholl said:
Please tell us more about the speaker protection. Does it have limiting so not to clip? I'm considering these for use on some public address use and don't want a mic drop to blow the amp or speakers.


What impedances can it drive?

Does it use the same input boards as the 2 by 150Watt modules?


What is the sinad?


Thanks, Scott
Click to expand...
Hi, Scott

This amplifier module shares the same interface with 2*150W module.
It has an output voltage/current limit to have the same output power for a 4/8ohm load, and it has short /HF/DC protection, so there is no worry about the mic drop problem.
The minimum load is 2.7ohm.

Thanks,Eric
 
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E

Erica.C

Member
Joined 2005
rrobot said:
Can someone please point me to the files to CNC the rear panel cutouts for XLR and switch etc (dxf?) ? I saw the mech drawing file, but I really thought I'd seen reference to the panel cutouts too but I just can't find it now in the thread?
Click to expand...
Hi， Chris
Please check the first thread for the drawing files. And re-attache it for you.
 

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R

rrobot

Member
Joined 2018
Erica.C said:
Please check the first thread for the drawing files. And re-attache it for you.
Click to expand...
Thanks Eric! This is no doubt just me being foolish but I did look through those dxf files. I couldn't see which one I would import into panel designer software to make the correctly spaced cutouts when CNCing the rear panel? There seems to be a top profile of the I/O board and an XLR but not a complete layout for rear XLR and switch panel cutouts. Sorry if this is a really silly question. 😆
 
E

Erica.C

Member
Joined 2005
rrobot said:
Thanks Eric! This is no doubt just me being foolish but I did look through those dxf files. I couldn't see which one I would import into panel designer software to make the correctly spaced cutouts when CNCing the rear panel? There seems to be a top profile of the I/O board and an XLR but not a complete layout for rear XLR and switch panel cutouts. Sorry if this is a really silly question. 😆
Click to expand...
Hi, Chris

Please wait a moment, let me ask Mech. Engineer to have this drawing for you.

Thanks,
Eric
 
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E

Erica.C

Member
Joined 2005
Erica.C said:
Hi, Chris

Please wait a moment, let me ask Mech. Engineer to have this drawing for you.

Thanks,
Eric
Click to expand...
Hi, Chris

Sorry for the late reply, please attache 2d/3d files for the IO board with the rear panel.

Thanks,
Eric



1700400379140.png
 

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E

Erica.C

Member
Joined 2005
Koifarm said:
Hello Eric,

I ike to build a tube input buffer.

What is the input impedance of the amp board?
What is the required max inputvoltage of the amp board?
And can I aquire the +/- 60V on the main amp?

Ronny
Click to expand...

Hi, Ronny

Thanks for reaching out. And please find my reply below:

What is the input impedance of the amp board?
-- Unbalance 3.6K, balance 7.2K;
What is the required max input voltage of the amp board?
-- It can accept 20dbu max input;
And can I acquire the +/- 60V on the main amp?
-- Yes, you can have +/-60V from this amp, there is no specific connector with these voltages, but we have test points on the bottom side for these voltages,
It's not difficult for you who have rich experience in EE circuit design.

Thanks,
Eric
 
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