Ana içeriğe geç

Model A1419 / EMC 3070 / Mid 2017 / 3.4, 3.5 or 3.8 GHz Core i5 or 4.2 GHz Core i7 Kaby Lake Processor (ID iMac18,3) / Retina 5K display. Refer to the older iMac Intel 27" Retina 5K Display (Late 2014 & 2015) guides as the system is very similar.

243 Soru Tümünü görüntüle

iMac 20" 2017 speakers' cable identification

Hi all,

I would use iMac's speakers with 2.1 amplifier (got the parameter from the other thread: 8 ohm, 2x15W+10W). The only thing which stops me with that is how to connect cables properly. Well I could open each speaker case but it is glued and do not want to damage them. There are two speakers (left and Right) and two subwoofers (L & R). Anyone knows which cable is dedicated to what? I could not find any information on internet.The speakers are the same for 27" iMac 2015-2017 and even mid 2019.

Yanıtlandı! Cevabı görüntüle Ben de bu sorunu yaşıyorum

Bu iyi bir soru mu?

Puan 0
Yorum Ekle

3 Cevap

Filtre ölçütü:
Seçilen Çözüm

I've found a few way to test speaker polarity but the best is with battery. Please see below or click link.

Test Speaker Polarity with a Smartphone

If your system is already wired and you are able to pass an audio signal from input to output, you can test speaker polarity using a smartphone app.

I recommend the Studio Six Speaker Pop App. It works by connecting the audio output of your smartphone to the input of your system. Then place the microphone of your smartphone in front of the speaker you want to test. The app will send a positive impulse out to the system and measure the polarity of the sound coming out of the speakers.

Test Speaker Polarity with a 9V Battery

If you’re looking for a quick, free way to test speaker polarity, you can do it using the following method:

For this technique, you will need a 9V battery. DO NOT touch the terminals of the battery to the speaker for an extended period of time!

  1. Place one speaker wire to the positive (+) terminal of the battery.
  2. Place the other speaker wire to the negative (-) terminal of the battery.
  3. Notice which way the speaker moves as you make this connection.
    1. If the speaker moves outward, then the speaker wire connected to the positive (+) terminal of the battery is the positive (+) wire.
    2. If the speaker moves inward, then the speaker wire connected to the negative (-) terminal of the battery is the positive (+) wire.

This video clip shows what you are looking for when you apply the battery to the speaker wires:

Bu yanıt yardımcı oldu mu?

Puan 1

Yorumlar:

@kajack - Neat Trick!

tarafından

Yorum Ekle

Well, the good news is the speakers are wired at the connector in the speaker pairs so its just a matter to isolate which pair of wires go the given speaker main or subwoofer.

You'll need to locate the schematics and boardview drawings for your system board number is 820-01236. You do need both first to ID the connector to then locate within the schematics and then figure out what pins on the logic board relate to which speaker.

Block Image

Block Image

Bu yanıt yardımcı oldu mu?

Puan 0

Yorumlar:

2017 27" iMac's logic board is 820-00609/820-01134 accordingly to https://logi.wiki/index.php/Board_Number...

tarafından

Yorum Ekle

Yeah i also face same issue in my macbook but i got this solution with the help of Apple Service support under warranty product.

Bu yanıt yardımcı oldu mu?

Puan 0
Yorum Ekle

Yanıtını ekle

Jack sonsuza kadar minnettar olacak.
İstatistikleri Görüntüle:

Son 24 Saat: 0

Son 7 gün: 1

Son 30 gün: 1

Her zaman: 33