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Old 13th July 2005, 10:33 AM   #1
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Default SI T-AMP mono bridged?

Hi all,

I have a pair of SI T-Amps and i was thinking of bridging them to get some more power (and perhaps better quality) out of them.
Has any one here tried it?
What were your impressions with the sound quality and power?
Will i need to add a phase inverter or is there another way?
Where can i find instructions on how to do it properly?
So many questions :-)

TIA

Ami
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Old 13th July 2005, 11:43 AM   #2
kozak is offline kozak  Scotland
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the T amp are already bridged. The only thing you can do is to "parrallize" but in that case you will have only more current and thus the difference will only be heard on 2 ohms loads.
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Old 13th July 2005, 12:12 PM   #3
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Hi Kozak,

Thanks for your prompt reply.

By saying "parallelize" do you mean just short the L and R inputs and outputs or should i modify anything for it to work ?

Thanks again,

Ami.
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Old 13th July 2005, 01:00 PM   #4
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I believe when he said "parallelize" he meant connecting two T-amps together. In theory if you connect L+L R+R and G+G you end up with a two channel amp that can drive 2 ohm loads. If you have two T-amps your willing to risk losing, give it a try .
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Old 13th July 2005, 07:10 PM   #5
kozak is offline kozak  Scotland
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here is the answer I got from tripath about parrallel t amps:

Hello,

You will need to do several things to parallel the outputs of the TA2024.
Please note that TA2024 has been replaced for new designs by TA2024B.

1) Implement DC offset circuit using trim pot as shown in applications
section of TAA2008 data sheet.
2) Make sure gain of each channel is matched very well using 1% or better
resistors for Rf and Ri
3) Still use indcutors on each output. You cannot connect each output
together.
4) The placement of the diodes remains the same.

Please note that the only way you will get 30W in parallel mode is if you
use a 2 ohm load. If you still plan to use a 4 ohm load, then paralleling
the output has no advantage.

Best Regards,
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Old 13th July 2005, 07:43 PM   #6
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Default Mono operation

I mono'ed mine. But not to increase output power. This was to both match dc offset and to isolate power supplies.
It may increase the current a little, my application is high impedance so the current is not as big as voltage swing.
Pics of my mono'ed amp and some details are listed in a lower thread Pics of my New Amp.
And, I do not think parallel operation will work very well.


George
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