August 15, 2023 - ... Try to add the jack plug wires Left and Right across the volume control marked (here) in red, use the ground near to the volume control, disconnect the tape heads wires, and see if it works,.View attachment 300455

February 25, 2017 - A phone (output impedence of about 4 ohms) can drive a pair of 16 ohms speakers - it doesn't sound great but it is not going to explode. I would recommend an amplifier. ... Click to expand... Actually I was thinking of the AUX OUT on my amplifier. It isn't meant to drive headphones, more like a higher impedance like another amp, a slave amp or something. But you're right, the headphones jack is often called the AUX Output. My car stereo has an input for AUX and it's on the front end of the head unit.

September 2, 2011 - If you just want to connect an ... is to get a cheap headphone cable, preferably a mono, cut off one end and connect the ground/braiding to the negative (-) speaker jack and the center wire to the positive (+) speaker jack...

September 4, 2021 - Start with the volume control turned down and increase slowly, unless it gets very loud immediately and starts to distort as soon as you rotate it, you probably don't need anything else.

February 18, 2022 - Have you tried injecting a signal at the front or rear pre-out jacks? From the schematic they appear to be directly tied to the output of the electronic volume IC which connects to the power amp. ... The datasheet for the TDA7384 power amp IC says with a 13.7V supply its output is 35 Whats with severe clipping distortion or 15 Watts per channel into 4 ohms with low distortion. The output power is 8 Watts per channel into 8 ohm speakers at low distortion.

March 26, 2018 - Yes, basically I have an old radio ... So all I did was take an old cable with an old 3.5mm jack, cut one end off and connected the left, right, ground wires to the appropriate pins on the amplifier chip....

June 21, 2017 - Some mobile PA amplifiers have ... when CB was new. Back about 1965to 1970.. OR, connect the external (AUX) input on the PA amp to the headphone output of an MP3 pocket player....

March 15, 2023 - You will need some source of ... battery-powered radio or musical keyboard, with an appropriate cable plugged into the headphone or audio out jack to convey the signal to your amplifier....

August 26, 2022 - My car has a factory fitted microphone for the car's original bluetooth phone system. I am removing the system and replacing with a android based head unit. The head unit comes with a aftermarket 3.5mm audio jack microphone but i want to see if i can use my factory microphone instead, specially since the wires go back to the radio connector.

October 20, 2014 - HI, I have a vintage radio (one ... and one for the right. I added a LINE-IN to this radio by switching the input to each chip (Pin 3) to a 3.5mm stereo input jack. I added one 3.3uf......

September 23, 2016 - Answer #1) From your measurements it would seem that if you are measuring between the tip and ground you're measuring 17Ω through the headphone speaker. Unless you're measuring BEFORE you add anything to the jack - it can't be anything else. Looking at your solder joint I see a lot of loose wires.

November 2, 2019 - First, although it is difficult to discern, it looks as if you’ve shorted the signal lines to the speakers. From the jack, the cable should have 3 or 4 wires which split into two wires for each speaker.

September 21, 2015 - If you are worried about the tape and you have some soldering skills then you can make an adapter using a plug and jack. Only 2 wires are needed -- connect tip to tip and ring to ring.

June 2, 2021 - So my problem now is to either amply the signal or create an earphone with high impedance, I'm unable to buy such an earphone and they are not sold where I live. Is there a way I can amplify the output or create high impedance earphones by modifying already available earphones? Or can I just connect the output of the crystal radio into a any speaker with 3.5mm input?

October 24, 2017 - There are a two pairs for headphones, ... have only three contact points for four wires. Hence the COMMON (or GROUND) from each channel are joined together at the plug and jack....

January 23, 2024 - I'm currently working on a minor project, and part of it involves replacing a microphone input on a small circuit with a headphone jack. The Jack has the usual three pins: Left, Right, and Ground, and the microphone it's replacing has two, simply labelled "Positive" and "Negative," Where...

July 11, 2018 - The connector from the cd reader to the mother is a 14 pins ribbon. ... When your car doesn't have Aux you simply purchase a "FM Transmitter" that your aux device plugs into and you set your radio to the proper FM channel and it plays the aux.

May 20, 2020 - An audio head injecter cassette with cables cut off; real L,R auxiliar added jack lines to the lifted pins of the audio management chip, the one that routes the AM, CD, tape, FM1, FM2, VHF, audio to the volume manager and power amplifier input.

June 23, 2011 - The multitrack recorder shouldn't have damaged the headphone output either. I think it was just a coincidence. ... Professional Audio power amps are very capable pieces of equipment. I have driven mine(Carvin 400W) with the 8 ohm output of a small desktop radio and occasionally connected my old HP audio oscillator directly to it.(high impedance output).

September 25, 2022 - Speakers from 2-1, Headphones 1-3, signal=1-3 35--3 is stereo, 1=gnd ... You somehow cut off the 35-5 that would make things easiest for him - like Figure 5 in the Digikey link... ... It sounds like you have a "3 circuit jack" with a single switch. And since the description is wanting to disconnect "a speaker"that is the correct part to use.