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TSSA V1.7 mosfet Current feedback amp module

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A

aradan

Member
Joined 2015
Hi Sonny,

Merry Christmas and all the best to you in the holiday season!

Sent you a pm, but thought the answer might be of interest to others too.

I have got a 25vac Trafo and in SG it gives 38vdc out. Would it be possible to run it with the amp, or better to use a lower value one than?

It looks like 10% more than recommended max of 35vdc

Sent from my ONE A2003 using Tapatalk
 
sonnya

sonnya

Member
Joined 2001
mirand-audio.dk/?post_type=product
aradan said:
Hi Sonny,

Merry Christmas and all the best to you in the holiday season!

Sent you a pm, but thought the answer might be of interest to others too.

I have got a 25vac Trafo and in SG it gives 38vdc out. Would it be possible to run it with the amp, or better to use a lower value one than?

It looks like 10% more than recommended max of 35vdc

Sent from my ONE A2003 using Tapatalk
Click to expand...


Hello Aradan.

The voltage will drop a little when the TSSA V1.7 starts to draw current in the bias.

So it is okay....

BR

Sonny
 
A

aradan

Member
Joined 2015
I think it has slightly different concept.

First of all it has balanced input :) And Sonny should have put the schematics in another thread which covers the DAC he has developed.

Would you like to get this one in addition to TSSA V2 ? :)

As far as I understand TSSA V2 might technically be a more powerful successor of TSSA v 1.7 and 1.8 having less heat dissipation and more power, the PSU boards are the same, the difference is in the Voltage used to drive them
 
N

nounouchet

Member
Joined 2012
I understood that when using a BL Drive board then a TSSA board is used for the positive part of the signal and a TSSA board for the negative part.

How to connect the HPs with the use of a BL Drive board ?
OUT of positive TSSA board on + HP and OUT of negative TSSA board on - HP?

Sonya, do you have two BL Drive boards available?

I would like to use 4 of my TSSA boards to power the low frequencies (up to 300 Hz) in an active amplification.

nounouchet
 
N

nounouchet

Member
Joined 2012
I just discovered post #203 with "BL drive V1.1 connection diagram.pdf".
It's Ok for the connection.


sonnya said:
TSSA V1.7 in BL drive will to around 250Watt into 4R. In 2R the output power will be lower.
Click to expand...
The TSSA 1.7 is given for 40W into 8 ohm with +/-35V. How to arrive at this result ?



My speaker is in 8 ohms. My PSU is +/-28V. I calculate 32W for output power.
But with BL drive how much power will I get ? The double ?

I use RCA connections and not XLR, does it have an impact for BL drive board ?


nounouchet
 
sonnya

sonnya

Member
Joined 2001
mirand-audio.dk/?post_type=product
nounouchet said:
I just discovered post #203 with "BL drive V1.1 connection diagram.pdf".
It's Ok for the connection.



The TSSA 1.7 is given for 40W into 8 ohm with +/-35V. How to arrive at this result ?



My speaker is in 8 ohms. My PSU is +/-28V. I calculate 32W for output power.
But with BL drive how much power will I get ? The double ?

I use RCA connections and not XLR, does it have an impact for BL drive board ?


nounouchet
Click to expand...


Hi Nounouchet.

Do you have the bl drive module.

In bl drive the amplifier looks into 4 ohm when driving an 8 ohm load.

So i would say 2,5 to 3 times more power
 
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