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#1

stevenj48
Member
Joined: 03 March 2018
Posts: 139
Member
22 August 2021 10:30 am

Just wondering who use a guitar amp for a booster? I have trolled through old posts and seen a few.
Also if you do use one what model amp do you use?


Minelab SDC2300,Minelab Equinox 800,Minelab GP3500

#2

BrokeInBendigo
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Joined: 28 July 2020
Posts: 78
Member
22 August 2021 10:38 am

Got a Marshall half-stack in the back of the Ute, wireless tx/rx unit on the gpx. If I hit a screamer I cause a seismic event.


GPX 5000 / sP01 / NF coils

2 users like this post: AngerManagement, HippyProspecting

#3

mbasko
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From: Central West NSW
Joined: 27 January 2015
Posts: 5,400
Member
22 August 2021 12:13 pm

I used to have some cheap $20 mini guitar amps LH-380. Can get them on eBay etc. pretty easily.
They were ok but quality between units could vary & build quality not great.
Plenty of volume, inbuilt speaker, used 9v batteries, cheap enough to have a couple for backup.
There'd possibly be a couple still using them on here but I haven't used one for a few years.

I think Angermanagement may have tried some different types out?

Always wondered how the more expensive ones would go but never tried one.


Everything we use comes from mining or farming.

#4

stevenj48
Member
Joined: 03 March 2018
Posts: 139
Member
22 August 2021 02:32 pm

mbasko wrote:

I used to have some cheap $20 mini guitar amps LH-380. Can get them on eBay etc. pretty easily.
They were ok but quality between units could vary & build quality not great.
Plenty of volume, inbuilt speaker, used 9v batteries, cheap enough to have a couple for backup.
There'd possibly be a couple still using them on here but I haven't used one for a few years.

I think Angermanagement may have tried some different types out?

Always wondered how the more expensive ones would go but never tried one.

i did see some post where people had the LH-380 3w but the current ebay ones seem to be 1.5w


Minelab SDC2300,Minelab Equinox 800,Minelab GP3500

#5

XLOOX
Member
From: Inglewood Fault, QLD
Joined: 21 August 2019
Posts: 134
Member
22 August 2021 03:42 pm

https://www.ebay.com.au/itm/Neoteck-Por … 3246677207

$40 Compact,lasts all day and has a hi/lo gain switch which is very useful for matching to detector output.

no builtin speaker though

I use on SDC and QED.


1985-2005 Garretts ADS Deepseeker x 2- now THATS a slow learner !
2017... Whites TDI SL 16V+Sadie, Makro Gold Kruzer, QED PL3+14x9 Evo, SDC2300

#6

stevenj48
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Joined: 03 March 2018
Posts: 139
Member
22 August 2021 09:43 pm

XLOOX wrote:

https://www.ebay.com.au/itm/Neoteck-Por … 3246677207

$40 Compact,lasts all day and has a hi/lo gain switch which is very useful for matching to detector output.

no builtin speaker though

I use on SDC and QED.

Thanks I already have one of those but is very bump sensitive so may try something else.


Minelab SDC2300,Minelab Equinox 800,Minelab GP3500

#7

XLOOX
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From: Inglewood Fault, QLD
Joined: 21 August 2019
Posts: 134
Member
23 August 2021 06:34 pm

My unit doesnt have any bump sensitivity but it does amplify a high pitched note on both detectors that is normally at an inaudible level.

The note is generated by the detectors not the amp though since in both cases it drops a lot when coil is v close to ground and gets louder as coil is lifted away.

I could see how some people would hate the droning but for me it works as a subconcious control over coil height


1985-2005 Garretts ADS Deepseeker x 2- now THATS a slow learner !
2017... Whites TDI SL 16V+Sadie, Makro Gold Kruzer, QED PL3+14x9 Evo, SDC2300

#8

BigL
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From: Cowjahaveapoop
Joined: 04 March 2018
Posts: 321
Member
24 August 2021 10:32 am

yeah I use a Rowland acoustic amp, I use a bit of reverb and just a touch of distortion... I find it accompanies the gold dance very well lol

Unless you've a hearing issue then an amp won't help much, you really need something that acts like a squelsh & highlights the threshold has broken, whereas an amp will boost the threshold warble and everything else

Last edited by BigL (24 August 2021 10:43 am)

#9

stevenj48
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Joined: 03 March 2018
Posts: 139
Member
24 August 2021 01:44 pm

BigL wrote:

yeah I use a Rowland acoustic amp, I use a bit of reverb and just a touch of distortion... I find it accompanies the gold dance very well lol

Unless you've a hearing issue then an amp won't help much, you really need something that acts like a squelsh & highlights the threshold has broken, whereas an amp will boost the threshold warble and everything else

I am after a amp to boost the speaker headphones are fine but can barely hear a speaker when plugged in.


Minelab SDC2300,Minelab Equinox 800,Minelab GP3500

#10

Jaros
Moderator
From: S.E.Qld., QLD
Joined: 11 August 2013
Posts: 15,495
Moderator
24 August 2021 02:20 pm

Maybe you should see an Audiologist. They will do a scan of your hearing -frequency range-limits and help you. smile


F1A4M2, GPX4500, Exterra 705 Gold, Ace 250, Goldrat 8" Dreammat River Sluice.

#11

20xwater
Member
From: Bathurst, NSW
Joined: 05 March 2014
Posts: 1,791
Member
24 August 2021 03:20 pm

1629778636_screenshot_20210824-141544_chrome.jpg
From memory it has audio compression devil
1629778764_20210824_141336.jpg
E.g...
If you were a deep low target frequency addict you can set a filter to cut all the high end and amplify the low end IF you wanted to lol

Last edited by 20xwater (24 August 2021 03:24 pm)

#12

BrokeInBendigo
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Joined: 28 July 2020
Posts: 78
Member
24 August 2021 04:51 pm

I take advantage of the sP01's adjustable volume knob (the booster part of it) & the GPX's volume limit to do some faux-compression.

I set my threshold to be just barely audible, then set the volume limit pretty low (7 IIRC), and turn the sP01's volume up to the point where an overload signal doesn't blow my ears off.

The result is that those usual super faint targets are still loud enough to not miss, but also I don't lose any hearing when I hit a piece of surface junk.

This is basically a very crude gain compression.

I also use some deep-insertion in-ear monitors for my headphones (etymotic brand, the cheapest ones will do fine), they do an exceptional job at negating all outside noise, on par with active noise canceling headphones.

Highly recommend trying this kind of setup.


GPX 5000 / sP01 / NF coils

1 user likes this post: 20xwater

#13

20xwater
Member
From: Bathurst, NSW
Joined: 05 March 2014
Posts: 1,791
Member
24 August 2021 05:24 pm

BrokeInBendigo wrote:

I take advantage of the sP01's adjustable volume knob (the booster part of it) & the GPX's volume limit to do some faux-compression.

I set my threshold to be just barely audible, then set the volume limit pretty low (7 IIRC), and turn the sP01's volume up to the point where an overload signal doesn't blow my ears off.

The result is that those usual super faint targets are still loud enough to not miss, but also I don't lose any hearing when I hit a piece of surface junk.

This is basically a very crude gain compression.

I also use some deep-insertion in-ear monitors for my headphones (etymotic brand, the cheapest ones will do fine), they do an exceptional job at negating all outside noise, on par with active noise canceling headphones.

Highly recommend trying this kind of setup.

Your onto it thumbsup

Last edited by 20xwater (24 August 2021 05:24 pm)

#14

stevenj48
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Joined: 03 March 2018
Posts: 139
Member
24 August 2021 09:46 pm

Just to clarify I have no hearing issues I usually have headphones on but when the kids are out with me prefer a speaker but the volume is really low on external speaker.


Minelab SDC2300,Minelab Equinox 800,Minelab GP3500

#15

BigL
Member
From: Cowjahaveapoop
Joined: 04 March 2018
Posts: 321
Member
28 August 2021 12:49 am

check your speakers impedance, if its a mismatch that won't help matters

Last edited by BigL (28 August 2021 12:59 am)

#16

XLOOX
Member
From: Inglewood Fault, QLD
Joined: 21 August 2019
Posts: 134
Member
28 August 2021 05:01 pm

could try a boosted speaker like the Logitech X50 that comes with the QED. $50 and more than loud enough. plenty of others around both better and worse.

https://www.ebay.com.au/itm/27349606150 … 4570!AU!-1


1985-2005 Garretts ADS Deepseeker x 2- now THATS a slow learner !
2017... Whites TDI SL 16V+Sadie, Makro Gold Kruzer, QED PL3+14x9 Evo, SDC2300

#17

Muk
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Joined: 19 June 2016
Posts: 597
Member
29 August 2021 07:50 am

I run JBL blue tooth speaker when I use a speaker last all day on a charge I don’t use the blue tooth I just plug it into spo1 on my sdc2300 works a treat very loud if you want it loud got it from JB Hi Fi $60 a couple of years ago cheers Muk.1630183815_42558657-5065-4cec-875a-e222d57a99a9.jpg

#18

stevenj48
Member
Joined: 03 March 2018
Posts: 139
Member
31 August 2021 08:12 pm

thanks for the the inpust everyone will try my x50 speaker when i am out next have also just order a cheap booster to try.


Minelab SDC2300,Minelab Equinox 800,Minelab GP3500


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