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RE: Tweeter difference problem with 3.3Rs and more

Its funny you should mention that, - I'm just packing up the 3.3R and the 2.7QRs to send off to you! Jokes aside, - I really appreciate you help with this crossover stuff, - the least I can do is send you a few cartridges and steup ups to try out, you've not tired in you system before

Thanks so much for your help with calulating the values, - I've not got the parts yet, - I am not sure whether to keep the earlier HP PLLXO as it is but I guess there is no huge point if the crossover point is too high, - I'll buy the 0.2uF cap and resistor and reuse the other caps. I see the resistor you chose was a 2K 0.6W metal film one. the small type, - not the 2W type I used the first time. I guess this is because there was not a 2K available at Maplin in a 2W? I it OK using the 0.6W or should I seek out a 2W?, - I'm sure I can find some somewhere else.
I might not test it out for a whiel as my DAP cement came, so my next task really is to do the delam repair!, - hmmm not really looking forward to this!

As for the phase, - I am pretty sure the amps are in phase and the Behringer inverts both LR but I could be wrong. When I tested out the configs yestedray I did try inverting phase each time, on the better normal setting the LR with the same crossover points on both LP and HP was still too thin for some reason. bessel with similar crossover points was better but Butterworth with 50Hz spaced points was even better as per the manuals recommendations.
I will build the recommenced 250Hz HP PLLXO in Butterworth 2nd order as per your cals, but I can see how useful too the Behrginer is, - but like I keep saying the hiss and SQ are not great in my opinion in stock form. If upgrading cures these issues to a large extent it would be a really great device for me. I think with the Audiosmile platinum mods (the transformer in and outs mod) they also fit single ended in and outs on it too, - so no need to use the XLR adaptors etc. might go for that mod, - the guy I bought the DCX from had a SCR modified with the platinum transformer mods and he said that sounded amazing. BTW I am 99% sure he had not fiddled with the unit, - it was in perfect condition and he said he hadn't even use it, - not a scratch anywhere. He said he bough it for a project a couple of years ago that did not take off.

I have a SPL meter, - great, - so how do you do the calibration curve?. I guess you just put the meter at the listening position? and where do I get the warble tones from?!

Your Dayton wright headamp up sounds very nice, - I understand its quite old but that was quite a pricey unit wasn't it? I think you will like my good step ups too though, -I will send you the best one, - "the head" , - its such a heavy beast. What I've heard before is really I guess the same adivce as with other trnasformer based devices, - I was told that you can't ecomomise with step up transforersm, - get the best, - by that meaning a big audionote or one using the Stevens and Billingotn TX103s (which I understand is very suspiciously similar to the Audionote design, an has similarly big, dense transformers)
I regret not getting a TX103 based unit when they were cheaper but form what I have read this "head" stepup I have got now is very well regarded and is supposed to be one of the best despite its age, - not sure how it compares to the audionotes etc, those are a bit out of my price range. There is a shop I know here that does the Music First steup ups using the TX103 units, - they do home demos, - I might trial one and compare.

You Melos sounds great too, - very interesting. I am not sure these two MCs I am intending to send you (Troika and Denon DL304) would have enough output though, - they are both 0.2mV. so on the lowish side, - you need the step up really and it will of course also help get the loading right too. My hunch is you will like both of the cartridges but I think if the 304 works well on the Technics deck/arm and blends well with your system I think it will be the ticket, - it can sound thin on some arms though, - I tried it on a Naim Aro unipivot (that I had on another LP12 I sold) and it sounded far too thin on that despite being quite a good technical match compliance/mass wise, - its sounded far better/fuller on the Ittok (which is not such as good technical match as its heavier than the Aro).

You Garrot sounds like a very serious cartridge, - I am going to be very interested to hear how you think the MCs (amplified with my steup or you Dayton) compare to the Garrot on the Technics, and which of the 3 you ultimately prefer.

I hear what you say about the Shelter cartridges, - its a shame they went up in price so quickly too, - I would have liked to have got one to try, but the thing is there is not that much point in spending loads on money on a cartridge when you can have the Denon DL304 for only £300. Not sure if you have head of a guy called Tom Evans, - who is a designer here, - he designed the original Michel Iso phono stage, and some of the Trichord stuff, - he has his own phono stages too, - Groove+ and microgroove etc. Not sure how well regarded his designs are in the grand scheme of things but he obviously is into his vinyl, -well apparently the Denon DL304 is his favourite cartridge regardless of price, so unless he has cloth ears it must say something for the Denons capabilities.

As for the Orbe/SME demo, - I too would have liked to have heard the 304 on the Orbe. But we didn't get around to it, - I think this chap was a little embarrassed that a cartridge so much cheaper than his could sound so good, - they were comparable in sound, and like I say I preferred the Denon, - more musical/less clinical sounding (but mind you it was on a different turntable so its hard to say for sure the differences).

The first Technics has come!, - 1700 MK2, - looks in great shape, - not wired it up yet. It has a Shure M73HE cartridge on it, - I understand its a bit similar to the V15 but not quite as good. Looks forward to trying this deck out. Will let you know tomorrow how it sounds, - look forward to it very much!

Like I say saying to Steve, - there are load of used vinyl shops here, - with very cheap classical albums. If you guys are looking for anything in particular you can't find let me know and I'll have a look here.

Cheers,
Colin

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