A quote from Phase Technical regarding coil performance. (still no videos I can find)
As there is no factory coil. And with a lot of potential buyers having their own.
Which coil is best for what is going to keep a lot of first buyers busy and excited for some time.
Feedback From PT on DP. (link below quote)
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Posted 16 hours ago
Ok guys, I've gone through all my testing notes and did some fresh air testing as well - I know, not really a test of the machine, but does give some insight into how the different timings and coils may perform in the field.
The Sadie is the best on EMI. For some reason the 12x8" Evo is a little chattier. 14x9" Evo is a bit quieter than the 12x8" - can't work that one out? I don't have a 14x9" Evo here at the moment to test. Also, haven't compared a Detech 8" yet.
Here are some coil/timing comparisons. All carried out using Sens 23.
Using the Sadie, comparing Fine and Ultra Fine, there is only about 5mm difference either way, and the crossover point where Fine starts to do a little better is about 0.3g. Anything smaller and Ultra Fine was the same or better. But it depends on target texture. I tested a 0.72g bit with ironstone, and Ultra Fine was still seeing this one a little deeper. On an Aussie 5c coin (our smallest, lowest conductor) depth was identical.
Sadie vs 12x8" Evo, both in Fine, the Evo was consistently better across a range of targets. On a 0.33g rough bit of gold I was getting 3cm better with the Evo. 4cm better on the 5c coin. On a prickly 0.26g bit, the Evo was only 5mm deeper. I suspect on much smaller gold, they will be about the same and would come down to the settings you can run.
I compared a Coiltek 11" Elite and 12" round Evo, and the Evo was 5-10mm better across the board. On the 5c coin, the Evo was seeing it 15mm better.
I also tried an old 12x7" Advantage Mono (I've asked Rohan to bring this back into production!) and depth was consistent with the Sadie. Across the range of gold tested, the 12x7" was the same to 5mm better. But, the 12x7" started to pull away on anything bigger than a gram. On the 0.26g prickly piece, the Sadie in Ultra Fine was 15mm better than the 12x7" in Fine. I didn't test the 12x7" in Ultra Fine.
Overall, here's who won the showdown on specific targets. I wouldn't take this too seriously as performance in the field with optimised settings will obviously change the results. But assuming everything was equal, and all coils were happy to run on Sens 23, this would be somewhat accurate.
Aussie 5c - 16" NF Superlight Mono beat the 12" Evo by 2cm (20mm).
Gold plated pendant - 16" Advantage Mono beat the 12" Evo by 3cm.
0.26g prickly - SDC2300 was better than E1500 12x8" in Fine by 5mm. (haha yes thought I'd throw that in there)
0.32g flat/worn - 12" Evo in Fine beat the Sadie & 12x8 Evo, both 10mm behind.
0.72g gold w/ironstone - the 12" Evo in Fine beat the 11" Elite and 12x8" Evo by 10mm
The 14x9" Evo I used briefly in the field and tested on a few targets, and it seemed a very nice compromise between the 12" round and 12x8" Evos.
Obviously stuff around 0.1g and smaller will see the small coils and Ultra Fine start to pull away. "
https://www.detectorprospector.com/topic/25223-early-field-review-of-algoforce-e1500/page/5/#comments
