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September 24, 2020, 05:54:38 PM

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Poll

What should I design first for official SSGuitar kit/PCB?

Battery amp with gain, tone, and volume controls.
14 (46.7%)
Preamp for use on any basic power amp.  Gain, Treble, Bass, Volume controls.
10 (33.3%)
Other (please share your idea below)
6 (20%)

Total Members Voted: 30

Voting closed: April 21, 2020, 01:35:30 PM

Author Topic: Poll: Official SSGuitar amp kit - preamp, or small battery amp?  (Read 2061 times)

joecool85

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Re: Poll: Official SSGuitar amp kit - preamp, or small battery amp?
« Reply #15 on: April 23, 2020, 12:51:17 PM »
Voting closed 2 days ago.  The jury is in, we're doing a battery amp for our first SSG kit!  :dbtu:
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tonyharker

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Re: Poll: Official SSGuitar amp kit - preamp, or small battery amp?
« Reply #16 on: April 23, 2020, 03:34:55 PM »
Can I suggest NJM2073 bridged with JFET buffer a la Ruby or noisy cricket. NJM2073 gain is some 44dB or x158 approx. Probably enough gain for a big muff tone control after the buffer. NJM2073 will give some 2 watts into 16 ohms and about 1.5w in 8 ohms. Almost forgot - off 9v.
« Last Edit: April 23, 2020, 03:36:11 PM by tonyharker »

tonyharker

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Re: Poll: Official SSGuitar amp kit - preamp, or small battery amp?
« Reply #17 on: April 23, 2020, 03:45:52 PM »
The Artec amp uses this IC although they rate it at 2.5w.  The Electro Harmonix EHX 5MM Guitar Power Amplifier also uses this Chip.
« Last Edit: April 23, 2020, 03:49:32 PM by tonyharker »

joecool85

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Re: Poll: Official SSGuitar amp kit - preamp, or small battery amp?
« Reply #18 on: April 23, 2020, 08:17:02 PM »
The Artec amp uses this IC although they rate it at 2.5w.  The Electro Harmonix EHX 5MM Guitar Power Amplifier also uses this Chip.

I brought up the datasheet for this chip and it seems that it can't do more than 6v input for 8ohms, yielding a little better than 1 watt.  Also, what Artec amp uses this IC?  And I thought EHX was using class D amps for their mini pedal amps?

Also, mouser lists this as an obsolete chip.
Life is what you make it.
Still rockin' the Dean Markley K-20X
thatraymond.com