Amp Camp Amp - ACA

[Zen Mod]

higher value - more influence of route and input capacitances

though , I believe with 50K you're still in safe territory

 

[e_fortier]

25K pots is not a standard value, look for 20K instead.

BR,
Eric

 

[Eric]

Thanks, Guys!

 

[superlian]

Is this two different types i can choose between? If yes, which is best?

Q4 2SK170, LSK170 Linear Systems || Home ~$1.00


Digiey is not selling this single. Any suggestion for where i can get it?

C1 3300 uF 35V Digikey # P6596-ND $1.99

 

[Zen Mod]

2SK170 is Toshiba , LSK is same part from Linear Sistems

regarding 3300uF/35V plenty of choices in Europe - just look at same pin raster

 

[thiagomogi]

Zen Mod , is a good idea to upgrade IRFP054N as the ACA ?

IRFP054N
power dissipation 170W
forward transconductance 30s
CISS 2900pf

I know I will have more THD at high Frequencies , more will have lower overall THD and better damping factor ?

best regards

 

[Zen Mod]

IRFP240 hard to have in Brasil ?

 

[thiagomogi]

No, just thought it was better to have more transconductance .
I like the sound of the ACA with irfp240 , most wanted to know if there are benefits with irfp054n , as it has > 4x transconductance than 240 and CISS almost identical to irfp040 and irfp150

 

[Zen Mod]

ok

they're cheap , no need for any matching ....... just try

you'll most probably be pleased

 

[thiagomogi]

thanks , When in Brazil let me know

 

[Zen Mod]

 

[superlian]

Is this a OK replacement for Panasonic 3300Uf/35V?

2pcs Japan ELNA RE3 3300uF 35V Audio Capacitor for Audio Equipment 16x35 5mm | eBay

 

[Zen Mod]

if original , yes

not replacement - equivalent

 

[mikegranger]

2SK170 is Toshiba , LSK is same part from Linear Sistems

regarding 3300uF/35V plenty of choices in Europe - just look at same pin raster

I have wondered for some time if paralleled Silmic II's could be used in place of the 3300 microFarad output cap. Of course these caps would have to be located off of the circuit board. Would the combined leakage currents cause a problem? Any thoughts about possible detriments and/or benefits to using the Silmics in this place in the circuit?

 

[Zen Mod]

no leakage , if cap is not broken

no reason to not try

 

[Variac]

Since Papa seems to love those Silmic II's it would be appropriate to try. Crossed my mind too.

I have wondered for some time if paralleled Silmic II's could be used in place of the 3300 microFarad output cap. Of course these caps would have to be located off of the circuit board. Would the combined leakage currents cause a problem? Any thoughts about possible detriments and/or benefits to using the Silmics in this place in the circuit?

 

[superlian]

Is this cabinet big enough for a stereo amp camp?

S2607 All Aluminum Amp Enclosure DIY Amplifier Box PSU Case | eBay

 

[superlian]

This is maybee much better?

2412B Full Aluminum Enclosure Mini Amp Case Power Amplifier Box Chassis | eBay

 

[Zen Mod]

both are looking good for ACA

 

[mikegranger]

Since Papa seems to love those Silmic II's it would be appropriate to try. Crossed my mind too.

Thank you Zen Mod and Variac....