what signal level you talkin about? THis is not as simple as putting rheostat inline with load, it`s not incandescent bulb

 

I just broke open the Axxess line level controller I am using on my sub output and inside was nothing but a pot labelled B50k

Why would it not be this simple?

Low level signal - 2- 3 volts

 

I just want to level match my tweeters before running calibration on the MS8

Tweeters on in pods on axis. Obviously the left one will be higher intensity as both L/R gains are equal.

 

So...this??

Pac-Audio.com Product Details | iPod Integration for your car and More by Pac-Audio - Connecting you to the future

 

I use one of these for my subs.

New Soundquest by Stinger High Quality Adjustable RCA Line Level Control SQLC | eBay

 

This is the one I popped open today as I only wanted the guts for sub volume

Amazon.com: Axxess AALC Remote RCA Level Controller (Discontinued by Manufacturer): Car Electronics

I would rather just build one than waste one I guess.

 

This is the pot inside

shaft Picture - More Detailed Picture about 100x B50K Potentiometer Rotary 6mm Split 20mm Shaft B50 Picture in Rotary Switches from ALi GoLd MedaL SeLLer | Aliexpress.com | Alibaba Group

 

2-3V is no problem but you`d need single pot not dual as pictured if you want to adjust them separately

 

I dont understand.
It wouldn't be worth my time to order parts and build it when they come pre made
in a cool little plastic box.

 

perhaps he want to use something smaller like this

or that

 

I missed the l/R part.

 

It may not be worth it to some to put in the DIY, but in the true spirit of things, why the hell not!

I didn't need to build the massive latching relay that I did, but I DID!

(I converted my Overdrive button to a pulsed ground that latches the above on/off to activate my sub amp)

I always need a reason to use my Weller station, if only to keep it's spirit alive as well.

As mentioned in my OP I work around the corner from an electronics part store (in Canada believe it or not)

so going in for a few things is hardly going to be out of the way.

 

I totally get it! I'm the same way. Just be aware that, IN GENERAL, for audio "volume control" type circuits you might want to use an audio-taper potentiometer.

There are two types of potentiometer, audio-taper and linear-taper. It has to do with the amount of resistance change proportional to sweep distance of the wiper on the pot. A linear taper changes in a linear manner with distance.

An audio taper changes in a logarithmic manner with distance, which is usually what's used for volume controls.

I think I got that right??? I've always bought audio taper for these type things.

 

In case anyone else is looking:

How to Wire a Potentiometer: 6 Steps (with Pictures) - wikiHow

Gnd / Input / Ouput (holding pot with terminals facing down)

 

.. Basically I want adjustable pots on my Tweeter outputs before entering my amps..

I want the level match for the front tweets I once had with a crappy LOC.

Don't do that, use an L-pad for each tweeter..
L-PADS

Or

Inline RCA Attenuator
Fmod Style Fixed Value Inline Attenuators

 

Gstokes, I took a look at the "inline RCA attenuator" site, interesting, although, regarding the crossover feature of the devices, the frequency of the filtering would change depending on the device that they're plugged into, since these things are totally passive, the input impedance of the next device in the signal chain is what will determine the filtering frequency.

So being that they label them as 100Hz 12dB, for instance, this is only going to be true of one particular impedance load. Change the load, change the filter.......

Although I'm sure that "in general- the filter freq. will be kinda close too......" Ya know.

As far as the attenuation feature of these RCA devices, this is essentially what the OP is wanting to make, just variable.

 

The Lpads Gstokes is talking about are POST-AMPLIFICATION.

OP, you are wanting to attenuate the level of just on channel pre-amplification, correct?

Since you have individual channels of amplification for each tweeter, it would make sense to me to do it pre-amplification, but, Gstokes does have a valid idea, just understand that those type Lpads he's talking about are post amplification.

 

So it occurred to me today, I bought a 30 pound power supply awhile back from an ex electronic student's mom (you read that right). She was liquidating things left in her home by her son. While I was walking out with my new prize she added that there was a few other boxes of odds and ends (hundreds worth), tools, solid core wire, full selection of caps, resistors and for some reason a box of what looked to be guitar amp pedal parts.
So going through the collection of pedal parts, what do I find but 3 B50k potentiometer's. Saves me a trip to the store!

 

I build tube guitar amps and solid state effects pedals. Do not use an L-pad for RCA-level signals.

Get the pot in the range of 25k to 50k, with an audio taper, which is the same as logarithmic taper. Here's an inexpensive source, and yes they are a good dealer, yes it is overseas. I have bought from them 50+ separate times:

www.taydaelectronics.com

Specifically, you'll need:

2 X 2 PCB Mount Horizontal RCA Sockets

50K OHM Logarithmic Dual Taper Potentiometer

Or something similar. You have to order $5 minimum order. They have enclosures <-- and vero board <-- (pcb with holes you can solder to) and knobs <-- and... most anything small electronics related.

The pot I linked to is dual-ganged, which will simultaneously turn the volume on two channels. I can help with wiring if needed.

CHAD

 

That is exactly what I used only single gang 50k, I soldered a female RCA end on to the input and a male end on the output. I made one up quick for my drive into work and seems to work as I expected. Next will be to get it within fingertip reach so I can fine tune it while in my seating position.