naturerecordists
[Top] [All Lists]

Re: The Soundprofessionals SP-Preamp

Subject: Re: The Soundprofessionals SP-Preamp
From: "Danny Meltzer" dannymeltzer
Date: Tue Feb 20, 2007 3:35 pm ((PST))
I have this preamp and have used it for about a year in the field and
it has proven pretty rugged.  The switch has not broken...I haven't
even worried about it.

I usually leave the switch on low gain and the knob turned up to full.
 This seems to give me the best noise/headroom situation.

Danny

--- In  Klas Strandberg <>
wrote:
>
> Hi!
>
> I've had a look at the SP-Preamp from Soundprofessionals.com. They
> offer it for 159USD and says this is 100 USD below retail price.
>
> Obviously good with it:
> Nice box, nice belt clip, - stereo, low noise, good pip voltage, low
> current consumption (8mA), small, easy to handle. It's perfect for
> the user of low noise PIP-mic's, MT24/96 and Edirol R-09.
> It can also drive headphones with enough juice, at least my 250 Ohm
ones.
>
> Questionable:
> The box is not shielded, neither are the cables inside. There should
> be a note (like in the Telinga manual...) saying: "This preamp should
> be connected to battery operated equipment only."  Indoors, connected
> to a mains operated recorder, you will get mains hum.
>
> The on/off switch will break. It is a only about 1 mm thick "finger"
> pointing out about 6 mm above the panel, switching the positions "off
> / low sens / high sens". It can be operated cautiously, but should be
> protected some way.
>
> Finally I don't like the volume wheel. (Gain control??) It seems as
> if it is a log. or even lin. double potentiometer in the gain
> circuit. So for the first 80% of it, very little happens, - then
> comes all of it. The one in my sample is also badly linked, so one
> channel go from left to right and then back again.
> On the other hand, this "volume" could be at maximum all the time,
> then setting the levels at the recorder.
>
> I don't know what happens if you short the output to ground, neither
> what happens if you turn the 9v battery the wrong way, which seems to
> be possible.
>
> For the ones who have better pip mic's than the recorder input, I say
> that this amp is worth 159 dollars. You get rid of the self noise!
> 259 is in my opinion too much, but I realize the problem. "Made in
> China" it would cost 39.99  at Radio Shack... Life is terrible.
>
> Klas.
>
>
>
>
> Telinga Microphones, Botarbo,
> S-748 96 Tobo, Sweden.
> Phone & fax int + 295 310 01
> email: 
> website: www.telinga.com
>
>
>






<Prev in Thread] Current Thread [Next in Thread>
Admin

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU