[amphead]

MoodySteve, nice look! Congrats from the Krmathis build team!

 

[amb]

Quote:

Originally Posted by jantze /img/forum/go_quote.gif What would be the best gain for me? 5? I'm including speaker outputs and my headphones are HD650 and D2000.

I don't know about the D2000, but for HD650 a gain of 4 to 10 is good. What this means for a balanced configuration is that the actual gain per amp board should be 2 to 5. The β22's website lists resistor/capacitor values for gains of 2, 5, 8 and 11.

Note that for speakers, you'll typically want higher gains (depending on sensitivity of your speakers and output level of your source), so you'll need to compromise and find a happy medium.

 

[Crow]

Has anyone heard from or received a kit from Jeff Rossel lately? His last log on here was 7/31/08 and I can't seem to get him on email. Maybe he's on a much-needed holiday.

 

[MoodySteve]

Crow, I've been waiting to hear from him for a while too, so I think he may indeed be out of town for a while.

 

[fault151]

Yeh i heard from him 2 days a go. I ordered a power supply. He has just been on holiday and just very recently got back. I guess he's a busy guy and his kits are in demand!

 

[ferds]

Jeff replied to my email/inquiries last 17hrs ago. i think he's busy preparing the SOHA II kits..

 

[Crow]

If the b22 amp boards are in a separate, signal-grounded case, is it really such a bad idea to run about 12 inches of (unshielded!) cat5 as signal wiring to the pot--or must there be shielding?

These b22 chasses can get large and this is the problem I'm facing. Pot extension shafts would be nice if only they were widely available!

Thanks folks

 

[Ferrari]

Quote:

Originally Posted by Crow /img/forum/go_quote.gif If the b22 amp boards are in a separate, signal-grounded case, is it really such a bad idea to run about 12 inches of (unshielded!) cat5 as signal wiring to the pot--or must there be shielding? ...

It's definitely not a good idea to use unshielded cables for the sensitive input signal to the volume pot at such a long distance.
If the wiring is over a few inches long, you should consider using shielded cables.

 

[digger945]

naamanf, did you ever listen to the Beta using the 0404usb as source(balanced)? Is it ok compared to Buffalo(I dont know if your Buffalo is balanced)?
Thanks.

 

[naamanf]

I only used the Buffalo. I have not listened to the 0404 in over a year but I would say the Buffalo is superior.

 

[jantze]

My initial idea is to use 2 X Hi-Fi 2000 Slim Line 2U case with the optional aluminium covers for my balanced b22 and dual power supply's. Will there be enough cooling or should I go for vented covers?

Aluminium cover:

 

[naamanf]

Go for the vented cover. Even when the amp is idle it gets very hot.

 

[MrMajestic2]

Quote:

Originally Posted by naamanf /img/forum/go_quote.gif Go for the vented cover. Even when the amp is idle it gets very hot.

X2 on that. Might even be recommended for both tops and bottoms.

 

[jantze]

Damn. Those aluminium covers look so much nicer comparend to the vented covers and I'm using that aluminum cover in my Buffalo DAC. Which one runs hotter, the psu or the amp?

 

[MrMajestic2]

Quote:

Originally Posted by jantze /img/forum/go_quote.gif Damn. Those aluminium covers look so much nicer comparend to the vented covers and I'm using that aluminum cover in my Buffalo DAC. Which one runs hotter, the psu or the amp?

The amp runs hotter than the psu. You could always send the alumium cover to FPE to make holes in it, but it will get expensive I think.