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Benedictus.de AC3RF Kits for Most LD Players
https://forum.lddb.com/viewtopic.php?f=24&t=9431
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Author:  ldwheele [ 23 Oct 2020, 20:06 ]
Post subject:  Benedictus.de AC3RF Kits for Most LD Players

As a new member of this forum, I was looking for a source for an AC-3 Modification kit for my Pioneer Elite LD player.
I did find a source for most players in Germany. You probably already know about this but just wanted to leave the information on what I found. The price is EUR 75 + EUR 15 shipping by UPS to the US.

http://www.benedictus.de/bde/AC3-1.htm
You can contact info@benedictus.de

I hope this may help.

Author:  cplusplus [ 23 Oct 2020, 21:20 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

I had no idea you could still buy them. Interesting. It is much, much cheaper to build it yourself though.

Author:  ldfan [ 23 Oct 2020, 21:26 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

Were you able to contact them to see if they are still in stock?

I think the last time I tried to buy one 15+ years ago, they were already gone which might also explain why there is no button available to put it in a cart.

Author:  ldwheele [ 24 Oct 2020, 16:07 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

Yes, they are still in stock. I just received an email from them this last week. You can pay via PayPal.

Author:  ldfan [ 25 Oct 2020, 03:33 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

In that case, that is good news :thumbup:.

These boards are nice in that they’re very compact in size so one can slip them into players with tight spaces like the CLD-3030. I still have one leftover which will be for my CLD-97 if and when I get around to installing it.

Author:  ldwheele [ 26 Oct 2020, 00:54 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

Can you tell me what is involved in the Mod.? It sounds like you have done this before. What skill level does it take? I have not done much work like this before other than soldering a few interconnect cables together.

Author:  rein-o [ 26 Oct 2020, 02:28 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

ldwheele wrote:
What skill level does it take? I have not done much work like this before other than soldering a few interconnect cables together.


I've never done this mod but its going to be a little harder control-wise.

Smaller area to attach wires.

Author:  jakeheke [ 26 Oct 2020, 03:02 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

Well worth it for rocking Dolby digital,
Great find.

Author:  admin [ 26 Oct 2020, 03:18 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

ldwheele wrote:
As a new member of this forum, I was looking for a source for an AC-3 Modification kit for my Pioneer Elite LD player.
I did find a source for most players in Germany. You probably already know about this but just wanted to leave the information on what I found. The price is EUR 75 + EUR 15 shipping by UPS to the US.

http://www.benedictus.de/bde/AC3-1.htm
You can contact info@benedictus.de

I hope this may help.


They have been mentioned several times but not sure it is still working:

[Sony MDP-605] AC3 modification issues (solved)
CLD-2950 Pioneer Tuning - Whats the added switch for?
Has anyone else bought NIB players?
Where to find instructions on CLD-97 mod
Pioneer CLD-97 AC3 mod step by step instructions

Always make a search (top corner box) first :-)

Julien

Author:  ldfan [ 26 Oct 2020, 08:31 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

ldwheele wrote:
Can you tell me what is involved in the Mod.? It sounds like you have done this before. What skill level does it take? I have not done much work like this before other than soldering a few interconnect cables together.


Most of the mods are not really complicated especially when you buy a kit from Benedictus as they should include a complete set of instructions for the player in question along w/ all the wires, a capacitor, shrink tubing, plastic stand-off, and RCA jack.

If you have soldered before, it's really just making sure you tin the cables properly to ensure you don't have any stray wire strands that could cause a short as you will be soldering to small points on the audio board or main board of the player. Also, when making the hole on the back of the player, I would recommend a hole punch over a drill bit just because it's simply easier to use.

If you need pics for reference, I can later post some of the mods I have done.

Author:  ldwheele [ 26 Oct 2020, 22:55 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

That would be great. I can use all the help I can get.

Author:  cplusplus [ 26 Oct 2020, 23:52 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

ldfan wrote:
Also, when making the hole on the back of the player, I would recommend a hole punch over a drill bit just because it's simply easier to use.

What kind of hole punch?

Author:  ldfan [ 27 Oct 2020, 01:58 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

This is the exact one I have used for the last 20+ years.....

https://www.amazon.com/Power-Punch-Shee ... ED72RS2HGZ

I think I use the largest punch size in the kit and I then slightly enlarged it w/ a reamer tool similar to this....

https://www.amazon.com/YaeKoo-Tapered-R ... =256298011

Author:  rein-o [ 27 Oct 2020, 04:16 ]
Post subject:  Re: Benedictus.de AC3RF Kits for Most LD Players

Never saw that hole punch, if I did more metal work I may look into getting one.

I do own a set of reamers, I can't remember if I bought mine at harbor freight but they may be cheaper there??????
Been a long time ago.

Author:  ldfan [ 27 Nov 2020, 10:43 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

ldwheele wrote:
That would be great. I can use all the help I can get.


Finally got some time to get some pics posted. These pics are a mix of three mods I did on my Pioneer, CLD-D701, Denon, LA-3100, and ProScan, PSLD43.



I first start off by removing the entire back panel and picking a spot that is in a nice open area that won't get in the way of anything mechanical on the other side (e.g.: the moving tray or turn mechanism). In addition, I try to avoid punching a hole out over any graphics on the back panel just for the sake of making the mod look nice.
Image


As I stated in a previous post, I use a hole punch instead of a drill bit (forgot the punch size but it's about the diameter of the RCA jack) as my preferred method as there is less chance of slipping and damaging the back panel.
Image


In addition, I still need to utilize a reamer to slightly enlarge the hole in order the for plastic washer to fit snugly into it (the RCA jack will never touch the casing itself).
Image


The RCA jack now installed (plastic washer is now painted black to match the back panel).
Image
Image


The back panel can now to be reattached to the player and now it's time to mount the AC3-RF board. I used a plastic standoff to lift the AC3 board above the main board for this particular player (for your CLD-97, you may not be able to do this so double stick tape is an option). You should pick a spot that will be as close to the AFM point as you want to make a coax lead as short as possible to the board (as you can see, I already have the AFM coax cable and yellow mute lead soldered to their respective points).
Image


Next step is to prep the coax cables that will be needed for delivering signal to and from the AC3-RF board and make sure to make them only as long as they need to be. You will need to make one cable w/ "both" ends that will look like this and tin the leads.
Image


The other cable will have one end w/ the same GND extension as above but the other end will have the GND wires cut off and then surrounded in a shrink tube.
Image


A more close up shot of how the wires will look connected to the board. Note how the coax cables connect to it w/ the extended GND. (Also, ignore the doubling of wires I have on the blue and black wires as that was done for an alternate mod on this particular player).
Image


Finally, the RCA jack being connected up w/ the coax wire. Note where the wires connect on the jack and the installed cap on the GND wire that goes back to chassis GND.
Image


I end the mod by providing my own label (and try to keep the font the same as the other labeling on the unit) so that it's obvious what this jack is meant for. (The labeling would usually say "AC3 RF Out" but this particular mod also had an RF Demodulator installed so it had to be called an "AC3 Digital Out")
Image


To test if your new AC3-RF output works, you can stick a voltmeter on the RCA jack (red probe on middle pin and black probe on GND) and should get a reading anywhere from 3.6v to 4.5v when an AC3 disc is in play and 0v when the disc is paused or stopped.




Hope you find this useful.

Author:  cplusplus [ 27 Nov 2020, 19:33 ]
Post subject:  Re: Benedictus.de AC3RF Kits for Most LD Players

Looks professional. Nice job!

Author:  ldfan [ 30 Nov 2020, 00:36 ]
Post subject:  Re: Benedictus.de AC3RF Kits for Most LD Players

Thanks :)

I do my best and it helps with experience (six players modded during a span from 2000 - 2007). My first mod turned out nice on my CLD-3030 but I regret where I ended up punching out the hole.

Image

Sure wouldn’t mind a do over on that one.


Anyway, there will definitely be a 2nd wave of player mods in my future so I’ll definitely be posting those as I get them completed :thumbup: .

Author:  cplusplus [ 30 Nov 2020, 01:25 ]
Post subject:  Re: Benedictus.de AC3RF Kits for Most LD Players

I need to mod my CLD-3030 at some point and maybe recap the power supply while I'm in there. It is new to my collection, but hands down my second favorite player.

Author:  sonicboom [ 07 Dec 2020, 18:13 ]
Post subject:  Re: AC-3 Modification Kits Found for Most LD Players

ldfan wrote:
ldwheele wrote:
That would be great. I can use all the help I can get.


Finally got some time to get some pics posted.

Hope you find this useful.

Thank you so much for posting this. Great work!

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