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Tag: amp

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solid-state tremolo for tube amps…

abram Posted on 2013-05-192020-07-27

i’ve have a CBS-era Fender Bantam Bass in for repair that looks like a bowl of spaghetti inside the chassis. it’s a slew of yellow wire spread from one sideContinue readingsolid-state tremolo for tube amps…

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Ampeg Super Jet SJ-12T repair…

abram Posted on 2013-04-052016-08-24

I’ve seen a lot of the same complaints on various forums regarding these amps. Basically, the amp starts to get noisy and the occasional arcing can be heard through theContinue readingAmpeg Super Jet SJ-12T repair…

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no. 5 re-appropriation…

abram Posted on 2013-02-16

this is a re-appropriation of a Fender Frontman 15-B. it’s one 8″ speaker in a closed cabinet primarily designed as a really cheap bass amp to be included in starterContinue readingno. 5 re-appropriation…

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5W single-ended EL84 amp (before)

abram Posted on 2012-11-22

insides of a Fender 15B solid-state bass amp that i gutted and converted into a simple tube circuit. i constructed this several years ago, and it’s not been very functionalContinue reading5W single-ended EL84 amp (before)

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Carvin Pro Bass 200 iPod-Mod

abram Posted on 2012-11-152012-11-15

And here we have a solid 160W solid-state bass amp with an RCA input on the front. this amp was brought to me with the complaint of really low volumeContinue readingCarvin Pro Bass 200 iPod-Mod

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Ampeg SVT-CL Repair

abram Posted on 2012-10-242012-11-15

here’s a 300 watt Ampeg SVT-CL that i had on the bench today. a much different kind of amp from the 70s models that i’ve been more accustomed to workingContinue readingAmpeg SVT-CL Repair

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TDA2040-based amp schematic with EQ…

abram Posted on 2012-06-04

well here’s the first draft of the simplest medium powered solid state design i could muster. TL082 can easily be substituted with a TL072 which is probably better anyhow (iContinue readingTDA2040-based amp schematic with EQ…

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LM386-based “Esteli” demo by Alex Wilson

abram Posted on 2012-05-12

an older video, but one i’ve been wanting to post for some time. this is Alex Wilson of Son Cats playing on one of the several cigar-box amps i’ve constructed.Continue readingLM386-based “Esteli” demo by Alex Wilson

about

Abram Morphew is an electrical engineer, bedroom musician, composer, naturalist, and amateur scientist. I play music in the the binary marketing show. This blog is a catalog of stuff that I make or bits of information that I think could prove useful later on when memory fails me.

 

I currently hold an Extra Class Amateur Radio Operator license and transmit on the air as K2NXF.

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