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H

HiroPro

Member
Joined 2009
I guess it's a IRAudAmp7 IRS2092 ?

Considering SMPS from Roberto P (AP2 from audiopower.com Italy) model DPS-500-S with classdaudio.com SDS-258. I hear great things regarding SDS series amps!!!

Has anyone here used AP2 SMPS with SDS-258?

About to do a DIY 2 chan rig with the latest and greatest "Cheap and Cheerful"

Current list is:

Jed Kunz Dynamic 4T SE DIY towers
Emotiva XDA-1 DAC (also used as pre)
SDS-258 amp with DPS-500-S SMPS

Comments, hints and suggestions?
 
C

Cristi

Banned
Joined 2008
connexelectronic.com
The class T amplifier has their own sound characteristics, and just some class D amplifier can reach this. if you need just low power, a TDA8920 amplifier is the way to go, or a TA2022 which has more power that you need, but can be supplied at lower voltage and there will always be a power reserve to get the best dynamic.
If you are referring at this amplifier Connexelectronic then i can say that the sound is similar, and there is more power available, especially for the higher power versions.
 
T

thesoundkid

Member
Joined 2011
hi there Cristi,

I got 4 300va 2x50vac torids so that would give +-70-75v dc rails after rectifier.

I'm wondering what IRS2092 modules would work best with this power supply setup?
or is there a better module for this setup?

I'm also wondering what size power supply is used in the ta3020 module with inbuild smps?
 
A

ajbor

Member
Joined 2007
I bought TA2022 from you (connexelectronic) and after few months of working its starts to smoke.
Supply is AC 23V-0-23V, speaker is subwoofer with two times 8 ohm. Speaker link:
Dayton SD215-88 8" Shielded DVC Subwoofer

Here are some pictures of amplifier.
http://www.shrani.si/f/3J/OJ/343iQ1bQ/1/dscf3846-copy.jpg

http://www.shrani.si/f/3g/EX/3anhy9Tv/1/dscf3849-copy.jpg

http://www.shrani.si/f/F/AP/2YDzsh5e/1/dscf3852-copy.jpg

http://www.shrani.si/f/z/PG/4HJOXZbU/dscf3855-copy.jpg

What should I do?

Thank you,
Robert
 
col

col

Member
Joined 2008
minirig.org.au
ajbor said:
I bought TA2022 from you (connexelectronic) and after few months of working its starts to smoke.
Supply is AC 23V-0-23V, speaker is subwoofer with two times 8 ohm. Speaker link:
Dayton SD215-88 8" Shielded DVC Subwoofer

Here are some pictures of amplifier.
http://www.shrani.si/f/3J/OJ/343iQ1bQ/1/dscf3846-copy.jpg

http://www.shrani.si/f/3g/EX/3anhy9Tv/1/dscf3849-copy.jpg

http://www.shrani.si/f/F/AP/2YDzsh5e/1/dscf3852-copy.jpg

http://www.shrani.si/f/z/PG/4HJOXZbU/dscf3855-copy.jpg

What should I do?

Thank you,
Robert
Click to expand...

Are you running the voice coils in parallel?

The speaker might be spec'd with 8ohm voice coils but in reality they will be nearer 5-6ohm, once you parallel them you can end up with a lower impedance than what the amp is rated at (2 to 3 ohms). Iv'e had this situation myself, but haven't had such a spectacular burn out like the one you are showing in your photos, usually the on-chip over current protection kicks in and mutes the amp. Might have been a faulty chip.

If you want to be running 2-3 ohm loads though you should be looking at proaudio amps or stuff that is rated to take the current.

col.
 
C

Cristi

Banned
Joined 2008
connexelectronic.com
ajbor said:
I bought TA2022 from you (connexelectronic) and after few months of working its starts to smoke.
What should I do?
Click to expand...
From what i see in this pictures the IC is broken for sure. must be replaced and clean the tracks before soldering the new one.
using the amp on subwoofer only would boost the rails voltage due pumping above the maximum voltage, if the input is not connected 180* out of phase and this is the most probable cause of the damage.
send me your address by mail to send you a new ic, or if you can't fix-it just send it back, and i will repair the board or replace if is too damaged.
when you bought it ? contact me by mail for details.
 
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A

ajbor

Member
Joined 2007
col said:
Are you running the voice coils in parallel?

The speaker might be spec'd with 8ohm voice coils but in reality they will be nearer 5-6ohm, once you parallel them you can end up with a lower impedance than what the amp is rated at (2 to 3 ohms). Iv'e had this situation myself, but haven't had such a spectacular burn out like the one you are showing in your photos, usually the on-chip over current protection kicks in and mutes the amp. Might have been a faulty chip.

If you want to be running 2-3 ohm loads though you should be looking at proaudio amps or stuff that is rated to take the current.

col.
Click to expand...

I run one coil per one channel so 8 ohms two times
 
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