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-   -   legato buffer. (http://www.diyaudio.com/forums/twisted-pear/181056-legato-buffer.html)

back 13th January 2011 03:45 PM

legato buffer.
 
i use a legato for without the buffer for a while.

comparing it with the buffalo 32s the bass is tighter for the 32s but at everything else i prered the legato.

i read somewhere that the output impedance at legato is 150 ohm but with the buffer is less than 1 ohm.

my amps input is 100k balanced.

if i add the buffer will i have tighter bass?

any other mod to make the bass a little tighter?

p.s. it`s the legato version 1

Russ White 13th January 2011 11:14 PM

With 100k load you would not really get much difference at low frequencies.

What you are observing could be in part to the AC coupling of the Legato.

Cheers!
Russ

back 14th January 2011 07:40 AM

Quote:

Originally Posted by Russ White (Post 2432399)
With 100k load you would not really get much difference at low frequencies.

What you are observing could be in part to the AC coupling of the Legato.

Cheers!
Russ

thanks russ.

i thought the same but i wonder if there will be a small difference or no difference at all.

i use it dc coupled since my amp have input caps and there is no need to have two caps at the signal path.

i wonder if the bigger output of 32s have something to do with it.

what kind of resistors would bring legato close to the 32s?

Russ White 14th January 2011 10:41 AM

Absolutely. The higher output swing could be what you notice there.

You should be able to use 200R I/V resistors, if you go much higher than that your going to need to change the CCS Resistors as well.

back 14th January 2011 01:03 PM

i would say 300r would be close to 3v rms.

i guess the ccs must be something like 660r?

Russ White 14th January 2011 01:38 PM

Yes, even 681R should be fine.


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