1972 300 Series Technical Question

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Verdoliva
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Joined: Mon Apr 01, 2024 8:12 am

1972 300 Series Technical Question

Post by Verdoliva » Mon Apr 01, 2024 8:29 am

Good morning.

My friend owns a 1972 300 Series bass amp that is constantly producing distortion regardless of the input (hi-lo) jack being used. He thinks the previous owner may have modified the amp for this effect but is unsure. I suspect their may be an issue in the pre-amp circuitry or with the input jack(s). It's my understanding that the High Gain input jack is used normally, but if distortion occurs then the Low gain jack should be used. However, in his case distortion occurs from both jacks.

Any and all suggestions are greatly appreciated.

Semper Fidelis
Ken

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studiodtk5
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Joined: Sat Feb 20, 2010 1:39 pm
Location: Toledo, Ohio

Re: 1972 300 Series Technical Question

Post by studiodtk5 » Sat Apr 06, 2024 5:01 am

Sounds to me like an issue with the amp. Have you made any visual inspections of the circuit yet?
Darren
ITOC: 08-00190

Peavey stuff I have: Masterpiece 50, Custom Shop 212, Stereo Chorus 212, T-60, T-40, Signature Select, Odyssey II Prototype, Generation Custom EXP, Firenza P90-ACM, VB-2, Stomp Boxes, Radial Pro 1000, lots of mics, etc...

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