[HAM] Q: Bit more "hump" - story of two a100's and one 122

[David Anderson]

Does the A-100 where the 122 connects directly to the AO-28 have its 
power amp/speakers connected?

I ask because the AO-39 has capacitors at its input that roll off the 
highs a bit, so what you might be hearing is actually reduced highs 
rather than more low end. The ear can sometimes be fooled by a shift in 
tonal balance.

David

On Friday, November 24, 2006, at 04:28  AM, joe doria wrote:

> Ok, I have what might be a valid,...or an invalid question
>
> We have two a-100's, both quite identical in sound/condition (very good
> condition).
>
> Now we have one 122, (also in great condition/sounding nice) and 
> connect it
> to the two a100's...
>
> with one a-100, the leslie 122 connects via a standard kit with a 6-pin
> socket coming right off the ao-28 preamp.(standard leslie kit for 122)
>
> then we try the same leslie 122 to the other a-100 with a standard 
> kit, but
> in this case the 6-pin out/socket is now coming off the ao-39 amp. e.g 
> -
> 5-pin connector removed from ao-39 and replaced with a 6-pin (still -
> standard leslie kit for 122 used)
>
> What are the reasons (if even valid) for the leslie connected to the 
> a-100 -
> where the 6-pin is coming off the ao-39 to appar to sound like it has 
> more
> "hump" (bass hump, tad more power it seems, etc) over the the other 
> a100.
>
> Is there a valid reason?
> Is it impossible that there even could be a difference?
>
> thanks
>