northwest Enhancer
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QED news
QED on facebook
link-https://www.facebook.com/groups/245308699667153/403446933853328/?comment_id=403472030517485&reply_comment_id=403476793850342&notif_id=1562580344994993&notif_t=group_comment
Interfacion Pty Ltd is pleased to announce that the QED PI Detector has been modified to allow the use of DD (double D) coils. This change involves a simple change to the electronics within the control box.
The firmware has also been upgraded to include a further improved Ground Balance.
All detectors being delivered to new customers from Monday 5th August 2019 will already have the above upgrades included.
As a show of commitment to all QED owners, the hardware modification to allow use of the DD and CC coils will be provided at no cost.
Of course and as per the QED warranty, the firmware update is provided free of charge, except for P&H.
Any QED owner who plans to attend the Laanecoorie Bash is encouraged to bring their detector along and have it upgraded at no cost.
Standard postage and handling arrangements apply to other owners. Send via Australia Post the box (minus batteries) along with a pre-paid, pre-addressed bag/box to:
Interfacion Pty Ltd
PO Box 106R
Redan VIC 3350
Howard Rockey
Director Interfacion Pty Ltd.

australian electronic gold prospecting forum.com  |  QED users  |  QED users (Moderator: bugwhiskers)  |  Topic: Enhancer 0 Members and 1 Guest are viewing this topic. « previous next »
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Blip
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« Reply #20 on: Friday October 11 2019 09:49:57 AEDT AM »

Thanks Simon and Pat.

Fine run in conjunction with the Quest wire free mate?

Id run the Quest, SP01 with earbuds.

Al.
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steelphase
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« Reply #21 on: Friday October 11 2019 09:55:27 AEDT AM »

  
Thanks Simon and Pat.

Fine run in conjunction with the Quest wire free mate?

Id run the Quest, SP01 with earbuds.

Al.

I run the wire free mate with my 4500 and the sP01 no problems at all.

regards
Pat
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Blip
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« Reply #22 on: Friday October 11 2019 10:55:12 AEDT AM »

Awesome Pat, thanks.
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phrunt
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« Reply #23 on: Friday October 11 2019 14:44:53 AEDT PM »

I will try QED / Quest Wirefree / SP01 / Earbuds tomorrow for you and let you know how I go, I am confident that combination will work.  Note Pat said 4500, not QED Al, the 4500 has amplified audio.
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Blip
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« Reply #24 on: Friday October 11 2019 17:25:55 AEDT PM »

  
I will try QED / Quest Wirefree / SP01 / Earbuds tomorrow for you and let you know how I go, I am confident that combination will work.  Note Pat said 4500, not QED Al, the 4500 has amplified audio.

Yeah got that Simon. Be good to hear how you go mate, thanks.
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phrunt
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« Reply #25 on: Friday October 11 2019 17:51:54 AEDT PM »

Tried it tonight, works fine, it was in fact quite loud.  So it's just certain headphones and all non-powered external speakers it seems.

The Logitech X-50 solution is pretty good, nice loud audio but they don't last a days detecting so I had to buy two. In summer here we only get about 6 hours of darkness so there is a lot of detecting time in a day.   I like the SP01 for it's enhanced audio and paired with GME speakers it's battery life is a non-issue.  Lasts longer than I'd need it to.    I'm just not a headphone person, I'm fussy :)
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Blip
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« Reply #26 on: Friday October 11 2019 19:19:05 AEDT PM »

  
Tried it tonight, works fine, it was in fact quite loud.  So it's just certain headphones and all non-powered external speakers it seems.

The Logitech X-50 solution is pretty good, nice loud audio but they don't last a days detecting so I had to buy two. In summer here we only get about 6 hours of darkness so there is a lot of detecting time in a day.   I like the SP01 for it's enhanced audio and paired with GME speakers it's battery life is a non-issue.  Lasts longer than I'd need it to.    I'm just not a headphone person, I'm fussy :)


Fairdinkum Simon what took ya!  smile

Thanks mate thats great!
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phrunt
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« Reply #27 on: Saturday October 12 2019 05:48:52 AEDT AM »

I'd still llike Howard to have a tinker with the audio output and see if it can be adjusted to suit higher power requirement headphones and so on which then will allow the SP01 to be used without effecting existing speakers like the X-50.

Easiest test is the Koss UR-30 headphones that ML supply with some of their detectors, someone living near Howard must have a set they can let him use for testing if he doesn't have any.  If he can get good volume coming through those headphones plugged directly into the QED then that's the issue resolved.  If not I could post some over to him.

It's the closest thing to a flaw I've found with the QED, everything else I'm very happy with so if that was resolved I'd be over the moon.
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bugwhiskers
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« Reply #28 on: Saturday October 12 2019 06:49:27 AEDT AM »

The QED audio circuit. Note that the Left and Right plug connections are joined.
Changing the 470 ohm resistor to 1k resulted in a level too high for the 2 speakers it was tested on. 680 ohm may be the best compromise. It's really not possible to create a fixed output audio that suits both headphones and external amplifiers.


* QED_AUDIO.JPG (61.77 KB, 597x523 - viewed 50 times.)
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phrunt
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« Reply #29 on: Saturday October 12 2019 07:52:21 AEDT AM »

Bugger, is there a way to do a switch to select between the two? Keep in mind I have no idea what I'm talking about and I'm probably asking too much :)
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bugwhiskers
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« Reply #30 on: Saturday October 12 2019 09:36:34 AEDT AM »

I will try a few things.
If the input gain was raised or attenuation reduced in the SP01, that would help.
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steelphase
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« Reply #31 on: Saturday October 12 2019 10:00:22 AEDT AM »

  
I will try QED / Quest Wirefree / SP01 / Earbuds tomorrow for you and let you know how I go, I am confident that combination will work.  Note Pat said 4500, not QED Al, the 4500 has amplified audio.

The 4500 is only amplified when using a certain plug configuration. The Quest unit doesnt trigger the amplifier in the 4500.
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steelphase
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« Reply #32 on: Saturday October 12 2019 10:09:01 AEDT AM »

  
I will try a few things.
If the input gain was raised or attenuation reduced in the SP01, that would help.


Unfortunately any increase in input gain overloads the amp stage of the enhancer when used with the ML machines.
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Blip
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« Reply #33 on: Saturday October 12 2019 11:48:50 AEDT AM »

  
  
I will try QED / Quest Wirefree / SP01 / Earbuds tomorrow for you and let you know how I go, I am confident that combination will work.  Note Pat said 4500, not QED Al, the 4500 has amplified audio.

The 4500 is only amplified when using a certain plug configuration.

Pat, are you able to elaborate on this please? “Plug configuration “

Al.
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steelphase
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« Reply #34 on: Saturday October 12 2019 15:52:09 AEDT PM »

  
  
  
I will try QED / Quest Wirefree / SP01 / Earbuds tomorrow for you and let you know how I go, I am confident that combination will work.  Note Pat said 4500, not QED Al, the 4500 has amplified audio.

The 4500 is only amplified when using a certain plug configuration.

Pat, are you able to elaborate on this please? “Plug configuration “

Al.

A ML GPX battery has a stereo socket fitted for the audio output. If only the ring and tip are connected on the stereo plug (earth left disconnected), an amplifier in the GPX battery is triggered. This is to allow users to have extra volume when connecting speakers.

regards Pat
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Blip
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« Reply #35 on: Saturday October 12 2019 17:07:04 AEDT PM »

  
  
  
  
I will try QED / Quest Wirefree / SP01 / Earbuds tomorrow for you and let you know how I go, I am confident that combination will work.  Note Pat said 4500, not QED Al, the 4500 has amplified audio.

The 4500 is only amplified when using a certain plug configuration.

Yeah ok, gotchya, thankyou.
Pat, are you able to elaborate on this please? “Plug configuration “

Al.

A ML GPX battery has a stereo socket fitted for the audio output. If only the ring and tip are connected on the stereo plug (earth left disconnected), an amplifier in the GPX battery is triggered. This is to allow users to have extra volume when connecting speakers.

regards Pat
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GARY
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« Reply #36 on: Saturday October 12 2019 18:00:09 AEDT PM »

I cannot get the SP01 to work at all on the QED with either my 32ohm headphone or Nokia and Logitech external speakers. All I get is a buzz type sound in the headphone & speakers. Also I tried different settings on the SP01 but still the buzz type sound persisted. I was then concerned would the SP01 still work on the GPX after my tests and yes it worked okay.

Gary.
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« Reply #37 on: Saturday October 12 2019 19:10:26 AEDT PM »

I have seen some QED's fitted with a headphone amplifier that also has an internal battery and volume control. Next time I come across one I will post the info.
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« Reply #38 on: Saturday October 12 2019 19:29:32 AEDT PM »

Both of the tiny amplifiers that D777 and Blip mentioned a while ago here as well on FB that I also have work fine on the QED and also on the GPX. I have now one of these tiny amps, the one that has the Volume Knob also as an On- Off switch, attached to the side of the QED control box which allows me to adjust the volume level with the Nokia external speaker as well to my headphones, both of which have no volume control.

Gary.
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phrunt
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« Reply #39 on: Saturday October 12 2019 19:36:53 AEDT PM »

  
I cannot get the SP01 to work at all on the QED with either my 32ohm headphone or Nokia and Logitech external speakers. All I get is a buzz type sound in the headphone & speakers. Also I tried different settings on the SP01 but still the buzz type sound persisted. I was then concerned would the SP01 still work on the GPX after my tests and yes it worked okay.

Gary.

I had that too, it's the cable you're using, try pull the cable out a little bit on the QED so the contacts touch a different area and it will kick in, again it will have low audio volume.   I guess I'll just have to try get another amp for the QED, the one blip has won't send to NZ, I guess because of the battery/aeroplanes issue. I'll just keep using the SP01 on the GPX and the VLF's and find an alternative for the QED.  It won't be a B&Z, I couldn't bring myself to buy one of them.  I'll have to source one from China probably, they seem to get around the lithium battery and planes issue.

I like the look of these two.

  

  
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australian electronic gold prospecting forum.com  |  QED users  |  QED users (Moderator: bugwhiskers)  |  Topic: Enhancer « previous next »
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