Yes, TDA7391 on both versions of the speaker.
Il 30/01/2020 22:02, bill steffey NY9H
On 1/30/2020 3:58 PM, bill steffey
having been in the audio business for over 40 years... 20+
with JBL ... & then Renkus Heinz.. I'd say this is quite a
nice little box.... a very early version SP-1 the device
inside was a TDA7391.....
my opinion exceeds BOSE ... for the purpose
On 1/30/2020 1:15 PM, Klaus
Brosche, DK3QN wrote:
@Vianney, with re. to Declans'
What type of audio amp is
used in the SP-1A (and in the SP-1, I have the latter one
but don't want to open
the housing just for this exercise)?
Is it one of these Class-D amp
73, Klaus, DK3QN
Am 30.01.2020 um 19:06 schrieb
Declan Mayock via Groups.Io:
I recently got a sp-1a and find it excellent but on usb/lsb
there is an annoying whine/fizzle, its hard to explain but
on a quiet part of band on filter 1 or 2 it sounds like it
is picking up internal electrical noise from circuitry, it
is only present when volume is turned on on duor even on
volume 1, i have moved cables and separated etc but no joy
has anyone else noticed this?
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