Comments on: Acetronic (Radofin 1292) MPU-1000 Composite MOD https://www.nightfallcrew.com/08/11/2017/acetronic-radofin-1292-mpu-1000-composite-mod/ Lightning in the Dark Thu, 20 Nov 2025 11:09:24 +0000 hourly 1 http://wordpress.org/?v=3.4.2 By: Luke https://www.nightfallcrew.com/08/11/2017/acetronic-radofin-1292-mpu-1000-composite-mod/comment-page-1/#comment-297201 Luke Sun, 02 Nov 2025 18:24:35 +0000 http://www.nightfallcrew.com/?p=13284#comment-297201 Hi, I modded mine also slightly differently using a 20K pot from pin2 and gnd and picking up the output from the centertap. I searched for the amplified output of the audio signal with a scope a (.9-1V p2p max) and hooked up there. Here are the pics (my AudioSonic - Radofin is a latter revision than the one of the OP): https://postimg.cc/sMCPSr2K https://postimg.cc/yDrVtVSH https://postimg.cc/ZBz0sT1j https://postimg.cc/9rg05Pvv https://postimg.cc/V5LzfrBM https://postimg.cc/YLhc1Fbn Original: https://postimg.cc/jWXBmc1y https://postimg.cc/NKvV0ZqN https://postimg.cc/H8G02DtR Cartridge: https://postimg.cc/TLH2MfS6 https://postimg.cc/CRHFMjtC I trimmed it just for the right contract (checking with a scope the p2p again) and it works fine on both my Composite input monitors. I have 8 cartridges (the console was a present from my parents back in 1982) but it would be nice if we could dump them and put them on archive.org and make a multicartridge with all the games that were released. Hard project but maybe it's possible if everyone starts dumping them! The eprom seems a 2kx8 "D2616" (at least on 2K games) which shouldn't be an issue to dump. Hi, I modded mine also slightly differently using a 20K pot from pin2 and gnd and picking up the output from the centertap. I searched for the amplified output of the audio signal with a scope a (.9-1V p2p max) and hooked up there. Here are the pics (my AudioSonic – Radofin is a latter revision than the one of the OP):
https://postimg.cc/sMCPSr2K
https://postimg.cc/yDrVtVSH
https://postimg.cc/ZBz0sT1j
https://postimg.cc/9rg05Pvv
https://postimg.cc/V5LzfrBM
https://postimg.cc/YLhc1Fbn
Original:
https://postimg.cc/jWXBmc1y
https://postimg.cc/NKvV0ZqN
https://postimg.cc/H8G02DtR
Cartridge:
https://postimg.cc/TLH2MfS6
https://postimg.cc/CRHFMjtC

I trimmed it just for the right contract (checking with a scope the p2p again) and it works fine on both my Composite input monitors.

I have 8 cartridges (the console was a present from my parents back in 1982) but it would be nice if we could dump them and put them on archive.org and make a multicartridge with all the games that were released. Hard project but maybe it’s possible if everyone starts dumping them! The eprom seems a 2kx8 “D2616″ (at least on 2K games) which shouldn’t be an issue to dump.

]]> By: Keith https://www.nightfallcrew.com/08/11/2017/acetronic-radofin-1292-mpu-1000-composite-mod/comment-page-1/#comment-239493 Keith Thu, 14 Nov 2024 03:35:05 +0000 http://www.nightfallcrew.com/?p=13284#comment-239493 Digging up a really old post here, but I did a variant of this composite mod the other day (I used an 120ohm resistor inline with the video signal instead of the trimmer, it works well). The issue is actually with the audio. I think the point at which the audio is sourced is wrong: we get the square wave sound but there is no noise channel, which is needed for explosions in Invaders, Air Sea Attack, etc. Sadly I have no idea how or where to start looking to fix this. Digging up a really old post here, but I did a variant of this composite mod the other day (I used an 120ohm resistor inline with the video signal instead of the trimmer, it works well). The issue is actually with the audio. I think the point at which the audio is sourced is wrong: we get the square wave sound but there is no noise channel, which is needed for explosions in Invaders, Air Sea Attack, etc. Sadly I have no idea how or where to start looking to fix this.

]]> By: Mike https://www.nightfallcrew.com/08/11/2017/acetronic-radofin-1292-mpu-1000-composite-mod/comment-page-1/#comment-156482 Mike Sun, 31 Jan 2021 17:08:53 +0000 http://www.nightfallcrew.com/?p=13284#comment-156482 <a href="#comment-148914" rel="nofollow">@Andy Young </a> Did you get the details, I am struggling with this @Andy Young
Did you get the details, I am struggling with this

]]> By: Mike https://www.nightfallcrew.com/08/11/2017/acetronic-radofin-1292-mpu-1000-composite-mod/comment-page-1/#comment-150712 Mike Mon, 28 Sep 2020 19:51:46 +0000 http://www.nightfallcrew.com/?p=13284#comment-150712 This is great, thanks ! Will a 20k trimmer be ok? I'm struggling to find a 22k in the UK. Also, in the 7th image, the silver wire coming out of the black sheath to the trimmer, is that solder hanging down connecting to the ground? This is great, thanks !

Will a 20k trimmer be ok? I’m struggling to find a 22k in the UK.

Also, in the 7th image, the silver wire coming out of the black sheath to the trimmer, is that solder hanging down connecting to the ground?

]]> By: Andy Young https://www.nightfallcrew.com/08/11/2017/acetronic-radofin-1292-mpu-1000-composite-mod/comment-page-1/#comment-148931 Andy Young Tue, 23 Oct 2018 06:05:10 +0000 http://www.nightfallcrew.com/?p=13284#comment-148931 Thank you this A/V mod works brilliant Thank you this A/V mod works brilliant

]]> By: Andy Young https://www.nightfallcrew.com/08/11/2017/acetronic-radofin-1292-mpu-1000-composite-mod/comment-page-1/#comment-148914 Andy Young Thu, 27 Sep 2018 15:20:12 +0000 http://www.nightfallcrew.com/?p=13284#comment-148914 Hi can you give more details with connecting Av cable to the acetronic please Hi can you give more details with connecting Av cable to the acetronic please

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