Basic 5066 Diagram for the Novice!

I have attatched a dia' for the newies who just want to put their SI Amp (un-modded), in a new box with a better volume control and new terminals.
Hope it is of some help?:cannotbe:
 

Attachments

  • diag 1.jpg
    diag 1.jpg
    92.4 KB · Views: 779
pcspinheiro said:
Does anyone know what are the "original caps" values on the speaker outputs? I'm building one of them AMP3 kits form 41hz.com and need to buy all the stuff now that I have a store at hand... cause I'm traveling again soon.

Thanks !

Paulo P.

Paulo,
You should have every part you need in the kit. You will need things like a power supply, case, input/output connectors, power connector, power switch and wire. You will need a power supply buffer cap of something like 22,000uf @ 16v but no output speaker terminal caps. .15uf caps are used in the Sonic Impact but it sounds better when you remove them.
Take your time and wind the inductors neatly. This is important to the sound.
Roger
 
audio1st said:
I have attatched a dia' for the newies who just want to put their SI Amp (un-modded), in a new box with a better volume control and new terminals.
Hope it is of some help?:cannotbe:


this is exactly what I need to do on mine, you are terrific. Being a complete newbie, is there a web page (on this side of Atlantic or is it Pacific), where I can get the part?

being a newbie, when there are too many choices I am not sure which is the right part. I prefer to order here (http://www.allelectronics.com/index.html) but not sure if the RCA input, potentiometer, and speaker out plugs are available.

thanks so much.

gychang
 
Parts

If you are just purchasing generic parts All Electronics has an excellent selection. To squeeze out better sound you will find better quality parts at http://www.digikey.com

DigiKey is an excellent source for reasonably priced Panasonic electolytic capacitors. They also have shipping discounts on moderate size orders ($25 US). There catalog is much greater than that of All Electronics.

Another source for parts is http://www.partsconnexion.com

Boutique parts such as BlackGate capacitors, etc are avaialable here.

There are suppliers closer to you in Japan, Austaralia, Singapore, and Hong Kong, all of which sell better quality parts than All Electronics. I have purchased a lot of parts from All Electronics and I have been satisfied with those purchases, but I prefer to use better quality parts in the signal path. There is no way of knowing what you will get from All Electronics until it arrives.

Considering the relative inexpensive cost of the Sonic Impact amp and the excellent sound that comes from such a prouct; the cost for tht few parts that one needs for boutique parts is minimal. The sound enhancement from top shelf parts in, IMHO, is worth the extra pennies for these sonic dynamoes.
 
audio1st said:
I have attatched a dia' for the newies who just want to put their SI Amp (un-modded), in a new box with a better volume control and new terminals.
Hope it is of some help?:cannotbe:


Are these the right parts?

http://www.allelectronics.com/cgi-bin/item/DLP-50K/470/DUAL_50K_LINEAR_POT,_6MM_SHAFT_.html

http://www.allelectronics.com/cgi-bin/item/RCMJ/search/RCA_JACK,_CHASSIS_MOUNT_.html

http://www.allelectronics.com/cgi-bin/item/STS-23/700525/DPDT_ON-ON_TOGGLE_SWITCH_.html

what is the proper term for the speaker wire input? I ordered a generic case from elsewhere.

I like to get a higer grade of above items for my t-amp, so if you have to direct me to exact web page I would appreciate it immensely.

thanks,

gychang
 
All Electronic Parts

If you are insistent on using All Electronics the switch you have chosen will work fine, but physically it is almost as big as the SI amp itself. A smaller part that will get the job done is

http://www.allelectronics.com/cgi-bin/item/MTS-5/700275/SPDT_ON-OFF-ON_MINI_TOGGLE_SWITCH_.html

The RCAs that you have chosen will work, but be aware that they are are non-insulated. That is, the grounds when installed in a metal chassis are connected to the chassis. There are problems that "may" be introduced when used in a metal chassis.

I have used these jacks in metal a chassis. I wrapped some of the threads and the base of the jack with teflon tape to insulate it from the chassis.

A better selection of insulated RCAs maybe had from Apex Jr. He has nickel plated insulated jacks for near the same price as All Electronics.

http://www.apexjr.com/Jacks.htm

The switches offered at Apex Jr. are comparable to All Electronics, but may cost less.

In the end you should spend your money where you feel most comfortable. Lots of Luck!
 
Re: All Electronic Parts

Davet said:
If you are insistent on using All Electronics the switch you have chosen will work fine, but physically it is almost as big as the SI amp itself. A smaller part that will get the job done is

http://www.allelectronics.com/cgi-bin/item/MTS-5/700275/SPDT_ON-OFF-ON_MINI_TOGGLE_SWITCH_.html

The RCAs that you have chosen will work, but be aware that they are are non-insulated. That is, the grounds when installed in a metal chassis are connected to the chassis. There are problems that "may" be introduced when used in a metal chassis.

I have used these jacks in metal a chassis. I wrapped some of the threads and the base of the jack with teflon tape to insulate it from the chassis.

A better selection of insulated RCAs maybe had from Apex Jr. He has nickel plated insulated jacks for near the same price as All Electronics.

http://www.apexjr.com/Jacks.htm

The switches offered at Apex Jr. are comparable to All Electronics, but may cost less.

In the end you should spend your money where you feel most comfortable. Lots of Luck!

these suggestions are great for newbie like me. I appreciate it very much.

any thoughts on the potentiometer
 
Pot for SI

The VR you selected appears to be linear and I believe you need to use and Audio taper VR. Tangent sells an Alps for $16 US. The cost of this VR is approximately 50% the cost of the SI amp.

Take a look at the analysis offered at http://www.tangentsoft.net/audio/atten.html

The Alps RK27 pot that is recommended and spoken about so highley is listed at the bottom of this page http://www.tangentsoft.net/audio/atten.html

The VR that comes with the SI is usable as well. It just has to be freed of its plastic housing for remounting.