Topic: Help with bass for SP-SPSB-6 - SOUND PROFESSIONALS - MINI BATTERY MODULE

[Weazel]

10 k is the mic input from a minidisc recorder.
20 k is line in from minidisc
4.7k is mic input DAt recorder.
47k is line in DAT recorder
37k is line input JB3

with this information you can caculate what type of capicators you need for a certain bass roll off frequency. or what frequency you get on your recording device with the capicators you allready have in your batterybox.

C = 1/(2×p×f×R)
p = 3.14 (pi)
f = frequency in Hz
R = load resistance (impedance) in ohms (the input impedance of your recorder)

[sml42]

If there is other publically available documentation I've missed, I for one would be curious to see a copy. However I suspect you'll tell me you derived the 10k figure empirically by measuring the frequency response

best regards,
stephen

.. or by looking at the parts values used :-) 

The components on my SP-SPSB-6 are potted in some sort of epoxy :-)

best regards,
stephen

[Humbug]

SPSPSB1 box consists of (from top to bottom):

-2 x bass roll off switches
-2 x blue resistors, one for each channel - bands: brown/red/black/black/brown
-6 x small brown 2 pronged thingies with 1L7 123 (these are difficult to read as they are jammed together. I think some of them are 1L4 xxx)
-2 x oblong brown 'pots' with 2L1 105 on them
-9V battery

Dunno whats on the underside of the circuit board, its epoxied into the case. 

[thierryhenry]

Over my head, but thanks.

[spyder9]

Hi,

I recorded my first show with my JB3 AND SP-SPSB-6 - SOUND PROFESSIONALS - MINI BATTERY MODULE and needed some help.

The show came out not as much bass as I'd like.  The battery comes with 7 position bass rolloff.  What position should I put it to gain back bass.

thanks in advance,

Michael

Get Adobe Audition.  You can adjust the bass with this software.