Below 150 at ~130 (3rd DIP position 1K ON too) it grows bigger in presence losing some focus, more so in 100 but with more treble too (1st position ON only). Fully open at 47K (all positions OFF) grows wide and stronger dynamically (output gains), retaining good focus, but loses bass fundamentals relative volume, typical bass players start sounding little like Jaco Pastorius trombone 2nd harmonic style tone. It would be best dynamically run open for exploitation in a multiway system with actively controlled bass area, so we boost there and compensate. The frequency response I measured follows the manual's FR chart very nicely BTW. Build, finish, and spec are generally of a quality product, not budget like at all.
Congrats Salas nice cart
I am always keen to try and describe or recommend good budget carts which most of us need to know more about so to exploit our builds better. This model is not that known or common in the West either. Thanks. The FSP proves showing everything little with ease nonetheless, very easy to reveal set up details and various carts through it. Rather highlights the better aspects and its tolerant to the lesser aspects. I agree with Per on that as he wrote above.
P.S Its useful compliance for arm calculations looks like 18-20cu by European standard when calculating back from resonance as seen in the Fast Fourier. The brass screws and nuts included are substantial adding 1.5g per shorter pair or 1.9g per longer pair. The cartridge itself is dead on spec 6.9g. I used aluminum screws since I had enough mass from the silicone stuffed arm wand already.
Attachments
Physically,
Well, I need better glasses
Thanks
It triggered an opportunity though. We explained what if and why when no PT1 PT2 dif voltage or very little is registering after Presbel discussed what had occurred during his adjustments.
I am looking through my parts bin to find some nice brands of not too big caps and a good in Early voltage and HFE pair of NPNs capable of circa 0.1A bias for a second order classic capacitance multiplier duet on a smallish matrix board to fit near the DC inputs, which is easy to make and test since I just got the simple raw supply with 180mV pk-pk ripple, no RC, no rail extras, but when I disconnect the TT I hear no kind of buzz only mild hiss (mainly from the load resistor, if I short the input 80% goes) with the volume full up. Hmm, I hope it will change something to the better in resolution or ambient cues at least. Or to just interfere with the dynamics, in that case I can keep it for other uses. Its a handy filter cell anyway. Did you manage Kean's low Zout multiplier anybody by now?
It triggered an opportunity though. We explained what if and why when no PT1 PT2 dif voltage or very little is registering after Presbel discussed what had occurred during his adjustments.
Well after "finding" TP1 and TP2, I installed Q1 and Q6, did a final overall check, cleaned excess solder flux, connected all the needed probes (2 DMM and osciloscope), and turned on PWS, as expected LEDs turned on, the second bunch with a little delay, and I got a clean osciloscope wave.
After some adjusting on VR2 I got perfect 3,6V and on Rail+ I have 31,79V which I believe is acceptable.
During the WE will mount everything on the chassis (if they arrive), will check all again, take some pictures for posting and then connect to my new DIY PTP type Lenco TT installed with The Wand+ carbon fiber unipivot tonearm. For the time being will run it with an Ortofon 2M red, still struggling to decide which cart to buy on the 500€ region, today a bit inclined for a Dynavector 10X5...but still don't know.
Thanks Salas for your efforts, thanks all the others involved, TeaBag, Ricardo, Merlin, etc.
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Correct, I went for the 43db version. Latter if need I can upgrade or use in-house setup transformers. I will look for the US supplier for the cart.
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Better avoid transformers when you will want to try MC or LMC since its only a matter of very few parts changing to convert the FSP for gain. Unless you want to benefit from balanced impedance primary floating transmission. That gives common mode rejection to all the nasty things noise from nearby equipment and mains cables that couple to a strong magnet low signal cart and its single ended cable run. Really good balanced primary SUTs cost much, or are very difficult to self make precisely, interfere a bit also. Still with a 2.5mV 150 Ohm cart like the 10X5 and 43-46dB gain those noise coupling things will be pressed down very low, and its a good source impedance for a JFET to see.
As I claimed, I have the exact same phenomenon when I disconnect my TT. Wander too if someone got tested properly build K Multiplier.
I will give it a go up and down the scale again when it will have 50hrs on it. Got the 300 & 430 Ohm ability too in the DIP switch. TT & rest of system tonal synergy are big factors though. How do you like this cart in general?
Changed input load to 200ohm, the plan was to see if the midbass could be reduced
Went from 100ohm naked Z-foil to a 200ohm Dahle cmf55
The change was as expected , a little less midbass along with the other disadvantages you could expect going from a excellent resistor to a fairy ok resistor,
The bass peak is less prominent along with some reduced lower bass,
Not good to say how much is because of the change in value VS how much is because of the change in quality.
For those who are interested the CMF55 has some artifacts in the treble (distortion) the sound-stage is smaller and the lower bass is less detailed
Will order 150ohm and 200ohm in naked Z-foil,
Went from 100ohm naked Z-foil to a 200ohm Dahle cmf55
The change was as expected , a little less midbass along with the other disadvantages you could expect going from a excellent resistor to a fairy ok resistor,
The bass peak is less prominent along with some reduced lower bass,
Not good to say how much is because of the change in value VS how much is because of the change in quality.
For those who are interested the CMF55 has some artifacts in the treble (distortion) the sound-stage is smaller and the lower bass is less detailed
Will order 150ohm and 200ohm in naked Z-foil,
This is interesting Joachim. Could you PM me some details with price, round trip time and maybe some references
Regards
