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Old 30th October 2011, 07:34 AM   #121
duch is offline duch  France
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Hello,
I've got a IRS2092 Amp module and i don't know where to connect mute cable... i am sorry
i 've an auxiliary voltage +-12v.
here is picture :
Click the image to open in full size.
 
Old 30th October 2011, 09:57 AM   #122
duch is offline duch  France
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It Works... mute cable connected to nothing.
Absolutly no noise ! ultra dynamic and very detailled sound on my Central Speaker Davis Acoustic MV. Associed with a smps800, the IRS2096 module 600W version give me the power i needed.
It's perfect.

Many Thanks Cristi,

I 'm gonna order two new modules for my VINCI II...
 
Old 30th October 2011, 04:49 PM   #123
duch is offline duch  France
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Hello,

Is it possible to Power on Two SMPS800 with only one switch ? for Dual-mono Class D amp ?
Thanks... Cristi Your IRS2092 is surprising... very nice
 
Old 31st October 2011, 10:53 AM   #124
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The Mute pin should be connected to GND pin only when the amplifier has to be muted. in normal operation should be left floating.
Two or more power supplies can share the same switch if rated to withstand the power supply nominal and inrush current. i suggest to use a 10A switch for a single power supply unit and at least a 16A for two units. 3, 4 or more power supplies inside a single amplifier unit should be started sequentially or a power soft start circuit must be used, otherwise the mains breaker could trip due to large inrush current drawn by several power supplies powered on simultaneously.
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Old 1st November 2011, 01:08 AM   #125
duch is offline duch  France
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Thanks cristi.
I ll take no risk, your sofstart seems to be fine...
 
Old 8th February 2012, 05:28 PM   #126
Ryssen is offline Ryssen  Sweden
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Hello Cristi.
I just ordered a IRS2092 Modular Amplifier the 600w verison,and Iḿ going to use +- 71-72v
Does the amp need to be modded to fit the voltage?
Didńt think it would when I ordered..don know if you sent it yet.
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Old 9th February 2012, 10:59 AM   #127
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At +-70 to +-75V you will get less than 600W, roughly 450-500W. I will set the undervoltage threshold at about +-65V to allow you to supply the amplifier module with reduced voltage.
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Old 11th February 2012, 10:00 AM   #128
Ryssen is offline Ryssen  Sweden
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Ok,thanks.
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Old 5th March 2012, 11:28 AM   #129
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Hi Cristi,

I just got some new heatsinks for my 8950th modules, so I can start all over again. I will implement the cap from mute to gnd to avoid the strange noise.

Is it fine to use the heatsink as gnd, ot is it better to find it on the PCB. I would rather not solder on the PCB since my solder iron is not suitable for smd soldering.

Kind regards
Brian
 
Old 7th March 2012, 02:57 AM   #130
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Brian, connect the GND's on the boards rather than heatsinks, since the heatsink to board contact might not be perfect. No need to solder on the pcb, just use the existing connectors. The caps connected across Mute and GND should be ~100uF to keep the TDA89xx in mute mode till the transient is gone. Make sure the IC pad is isolated from the heatsink because is connected to V- not GND.
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