optical
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Post by optical on Feb 28, 2022 22:47:18 GMT
Bi amp and use the class Ds for the bass, 686s for everything else? ? Good to see you're taking the easy route 🤣🤣 This is my exact plan. Use a slightly glorified disco amp (with a proper traffo though) 700 watts pumping through massive drivers (below 250hz) then the newly modded 686 for above.... If the disco amp does the job, build a proper one. What could go wrong..... |
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Bigman80
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Post by Bigman80 on Feb 28, 2022 22:51:04 GMT
Bi amp and use the class Ds for the bass, 686s for everything else? ? Good to see you're taking the easy route 🤣🤣 This is my exact plan. Use a slightly glorified disco amp (with a proper traffo though) 700 watts pumping through massive drivers (below 250hz) then the newly modded 686 for above.... If the disco amp does the job, build a proper one. What could go wrong..... Hahaha, yeah but you have dedicated bass drivers. I have 2.5way speakers. It means introducing a crossover somewhere. Not for me. |
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optical
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Post by optical on Feb 28, 2022 22:58:27 GMT
This is my exact plan. Use a slightly glorified disco amp (with a proper traffo though) 700 watts pumping through massive drivers (below 250hz) then the newly modded 686 for above.... If the disco amp does the job, build a proper one. What could go wrong..... Hahaha, yeah but you have dedicated bass drivers. I have 2.5way speakers. It means introducing a crossover somewhere. Not for me. Oh yes the way I've written that it does sound like I was recommending you could do the same, alas not, especially if you don't want to add extra circuitry. The Logan's are rated to 600w so fairly ravenous for wattage and indeed current. Stats have their own specific requirements as will your Q's. I suspect the specs of the purifi will mate well with the quality of your speakers, with the class D and power giving you that bass you've had a window to now, hopefully. |
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Bigman80
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Post by Bigman80 on Feb 28, 2022 23:26:06 GMT
Hahaha, yeah but you have dedicated bass drivers. I have 2.5way speakers. It means introducing a crossover somewhere. Not for me. Oh yes the way I've written that it does sound like I was recommending you could do the same, alas not, especially if you don't want to add extra circuitry. The Logan's are rated to 600w so fairly ravenous for wattage and indeed current. Stats have their own specific requirements as will your Q's. I suspect the specs of the purifi will mate well with the quality of your speakers, with the class D and power giving you that bass you've had a window to now, hopefully. It's certainly tempting me. I suppose it all largely depends on my ability to recoup the money i spent on the 686 boards. Maybe I should allow fate to decide. |
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Post by misterc on Mar 1, 2022 9:42:56 GMT
I feel Oli is after changing amp design completely or I am wrong?
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Post by electronumpty on Mar 1, 2022 9:55:05 GMT
I feel Oli is after changing amp design completely or I am wrong? He and Phononac need to come up with an Avalon power amp design. 💪 |
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optical
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Post by optical on Mar 1, 2022 10:05:20 GMT
I feel Oli is after changing amp design completely or I am wrong? He and Phononac need to come up with an Avalon power amp design. 💪 Yes. Cue world copper shortage. |
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Bigman80
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Post by Bigman80 on Mar 1, 2022 13:22:24 GMT
I feel Oli is after changing amp design completely or I am wrong? Quite right, Tony. I do fancy a change, but i am not actually too bothered if it happens or not. I will likely build both types anyway for a proper comparison. |
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Bigman80
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Post by Bigman80 on Mar 1, 2022 13:30:14 GMT
I feel Oli is after changing amp design completely or I am wrong? He and Phononac need to come up with an Avalon power amp design. 💪 It has been discussed. However, i am not sure there is all that much to be gained from a whole new design that couldnt be achieved by using the power supply Angus has already designed. That supply is suitable for the Purifi or a 686. |
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Post by misterc on Mar 1, 2022 15:06:46 GMT
When I saw the boards up for sale I felt, arh he has been listening to other amps recently maybe the itch is back?
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Bigman80
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Post by Bigman80 on Mar 1, 2022 15:17:48 GMT
When I saw the boards up for sale I felt, arh he has been listening to other amps recently maybe the itch is back? Not really an itch, but i always keep an open mind about this sort of stuff. I like to try new stuff, so why not see where fate puts me |
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Bigman80
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Post by Bigman80 on Mar 9, 2022 19:18:08 GMT
I have had my PC-CCC wired BT2 in the system for about 5 days now. Constantly playing, and running in. I had a listen today, and my, how different it sounds to the PC-OCC wired BT2. Rather than recalling from memory, i actually have an identical BT2 with OCC inside. so quick change overs are very easy.
Comparing the two has been very insightful. The Class D amplifier with the CCC preamp is now sounding a little lean and sharp. The OCC preamp makes a more rounded sound. A bit more fleshy and meatier.
The soundstage etc is pretty much like for like. The meatier sound from the OCC version is working well with the Class D. The bass does escape control a little, but only on some material.
While i had the chance, i put the preamps on the front of a NEC Class A/B integrated. I bypassed the preamp section. The PC-CCC Is far more dtailed here and provides a more balanced tonal spectrum. Good resonance and timbre from acoustic stuff. The OCC sounding massive in the LF. Here, the LF are out of control quite often.
I am loving the high levels of transparency from the PC-CCC. It's right up my alley and the 686 is going to be the perfect foil.
I now have some PC-CCC 24awg wire (thanks Chris) so will be rewiring this unit with the heavier gauge stuff. The PC-CCC in there now is microscopically thin. Allen Wright said to use the thinnest wire possible, in his cook book. Lets see if he was right!
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Post by firebottle on Mar 9, 2022 19:24:23 GMT
Thinnest wire possible, now that's counter intuitive to me.
Must have missed that. Will be an interesting outcome.
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Bigman80
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Post by Bigman80 on Mar 9, 2022 19:52:03 GMT
Thinnest wire possible, now that's counter intuitive to me. Must have missed that. Will be an interesting outcome. Yes Al, he advocated for using 0.1mm enameled copper. |
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Bigman80
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Post by Bigman80 on Apr 6, 2022 20:08:18 GMT
It's the little things, isn't it? I've spend an hour having a play with PCB software. It's something I have wanted to do for a while, but due to a lack of knowledge and understanding I have never really made any real progress......until today! Very, very simple, but I am very pleased with myself lol. Early days, but I am getting the hang of it, I think.   |
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edward
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Post by edward on Apr 6, 2022 20:16:05 GMT
It's the little things, isn't it? I've spend an hour having a play with PCB software. It's something I have wanted to do for a while, but due to a lack of knowledge and understanding I have never really made any real progress......until today! Very, very simple, but I am very pleased with myself lol. Early days, but I am getting the hang of it, I think. <sniped pictures> Which software you using Oli? |
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Bigman80
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Post by Bigman80 on Apr 6, 2022 20:16:45 GMT
It's the little things, isn't it? I've spend an hour having a play with PCB software. It's something I have wanted to do for a while, but due to a lack of knowledge and understanding I have never really made any real progress......until today! Very, very simple, but I am very pleased with myself lol. Early days, but I am getting the hang of it, I think. <sniped pictures> Which software you using Oli? EasyEDA It's free, so thought I'd have a bash |
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Post by antonio on Apr 7, 2022 5:03:57 GMT
Well done in having a 'bash', I wouldn't know where to start.
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Bigman80
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Post by Bigman80 on Apr 7, 2022 5:14:35 GMT
Well done in having a 'bash', I wouldn't know where to start. I didn't either.....YouTube is a great research tool. |
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Post by antonio on Apr 7, 2022 7:32:46 GMT
Well done in having a 'bash', I wouldn't know where to start. I didn't either.....YouTube is a great research tool. Don't forget I've only just learnt how to post a photo, in another 5 yrs I may be able to post an image from another site  |
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Post by electronumpty on Apr 7, 2022 9:36:28 GMT
Well done in having a 'bash', I wouldn't know where to start. I didn't either.....YouTube is a great research tool. Yeah you can learn anything, going to do my 1st diy lobotomy over the weekend 🤯 |
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Post by antonio on Apr 7, 2022 10:20:02 GMT
You'll need a good mirror. |
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Bigman80
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Post by Bigman80 on Apr 8, 2022 17:12:00 GMT
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Post by antonio on Apr 8, 2022 17:56:45 GMT
Congratulations  |
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Bigman80
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Post by Bigman80 on Apr 8, 2022 18:29:21 GMT
Congratulations Cheers Dave. |
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Bigman80
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Post by Bigman80 on Apr 11, 2022 10:02:31 GMT
I am in need of more shelf space. External LPSU for the digital gear is becoming rather expensive in real estate terms. I thought about building a really low level rack, so I contacted Permali about some Permali sheets, but at £500+, I'll give it a miss. I've had a little experiment with what I have available, but I'm not sure it's a goer. I seem to have lost some depth in the soundstage, but as it's all too high at the moment, I'm wondering if my plan to keep it all as low as possible will return it. Busy day ahead.  |
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Bigman80
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Post by Bigman80 on Apr 11, 2022 14:50:01 GMT
Ha! Sounds better than it did lol..... bonkers  |
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optical
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Post by optical on Apr 11, 2022 14:55:36 GMT
I find having an even amount of 'mass' in between the speakers (however much or little) is beneficial, be that because of reflections/waves/whatever. Maybe just more balanced visually and then audibly by psych-acoustics.
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Post by brian2957 on Apr 11, 2022 15:59:36 GMT
Lovely looking system Oli  |
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Bigman80
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Post by Bigman80 on Apr 11, 2022 16:09:29 GMT
Lovely looking system Oli Thanks Brian. |
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