In 2008 i reviewed the Anchor Audio Megavox Portable Soundset. Because our traditional Queensday Harinam in Amsterdam is about to happen again on april 30th i was pondering how to extend the battery life of this sound set. Although the battery life is already excellent (almost 6 hours, volume 50%) i needed more. The harinam lasts at least 8 hours so i need some extra juice. You can read my coming article about that soon.

If the internal battery is getting older and the capacity has decreased you could change it. The battery inside the megavox has the following specs according to Anchor : 12 V 5.4 Amp (Leoch DJW-12). But when i opened the megavox there was a different battery inside : PowerSonic PSH-1255F2-FR, 12 V 6.0 Amp (www.power-sonic.com). The dimensions are the same with 90x70x102 mm (HxWxD).

Anchor created a nice guide to replace the battery yourself. You can visit their  blog or watch the slideshow.  I have listed the necessary steps below with photos.

Step 1

Step 2

Step 3

Step 4

Step 5

Step 7

Step 7

Step 8

(Copyright Anchor Audio)

I have recently updated my review of the Megavox Pro and added some more insights and photos. Also i extended the review to include some direct competitors of the megavox. So go ahead, read it again

• Review Megavox Pro

Anchor HBM-60 Headband mic

The supplied headband microphone that comes with the Megavox Pro is not really sturdy and when you move a lot the microphone moves up and down. Secondly the whole headband construction is really flimpsy. So i set out to replace the headband mic.

The wireless receiver (WBM-6000) uses a 4-pin mini XLR male plug for the microphone input although only 3 wires are used to power the mic. I don’t know the reason why Anchor Audio uses a 4-pin plug, but this certainly limits the available headband microphones that can be connected. And also the wiring is different than most other plugs, so you need to be carefull.

So i went on internet and found this headband microphone from monacar that uses a 4-pin XLR plug. I could buy it from a local dealer in the Netherlands since Monacor does not sell to end customers. The price was 125 euro. When i received it by mail i tried it out for a quick test to see if it would work on the receiver. It didnt…. Be

Monacor HSE-130 Headband mic

carefull what you do here because when the wiring is different it could fry the microphone. So i needed to change the wiring of the 4-pin XLR plug on the headband mic. I e-mailed Anchor audio to find out the wiring schema of the WBM-6000 and also found the wiring schema of the Monacor mic (HSE-130) (see images). Then i resoldered the wires to the correct positions (see image below). Afterwards i tested the microphone and it worked!. I was really impressed by the sensitivity of the monacor mic compared to the supplied headband mic. It really picks up your voice more clearly and more loudly.

Here are some instructions with photos to show you how to do it:

Open the mini-XLR plug and locate the wiring of your HSE-130. It should be like this :

Wiring of the HSE-130 Headband mic on the Belt Pack

The wiring of the WBM-6000 Belt pack is different as you can see from this image:

Wiring of the WBM-Belt pack

So to get the HSE-130 working on the WBM-6000 belt pack we need to change the wiring:

HSE-130 -> WBM-6000

- The powersupply wire (on pin 4) needs to be soldered on pin 3

- The Audio in wire (on pin 3) needs to be soldered on pin 2

- The Mass (ground) wire (on pin 1&2) needs to be soldered on pin 1

Rewiring from HSE-130 -> WBM-6000

So with this guide i hope you can change your headband microphone for another type. I attached the wiring schema files for your conveinance:

• Manual of the Monacor TXS88HSE Wireless Belt Pack
• Wiring schema of the Anchor Audio WBM-6000 Wireless Belt pack

You can now view all the photos that i have collected over the years on library108. Visit the media page and click on Photo Albums. Or go to this page : http://library108.com/media/photos/

If you cannot view this page properly or something does not work, you can alternatively visit my picasa web page at: http://picasaweb.google.com/uddhava.kks

I have created a page where you can listen and download all the audio from HH Jayadvaita and Kadamba Kanana Swami’s.
It is still a test so the radio could be offline sometimes.
And i dont know what will happen if many people will start listening simultaneously. Hopefully the webpage will stay available.

You can find the radio here
or visit this link : http://library108.com/media/spiritual-radio/

The radio could be slow, or downloading will take a while. Please be patient. I am hosting this radio from my home.