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Post by Deleted on Mar 18, 2010 19:48:41 GMT
A very good price, most of us paid $89.99 plus $20 postage for the 6922 model, nice one
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csdam
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Post by csdam on Mar 18, 2010 20:06:43 GMT
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Post by clausdk on Mar 18, 2010 20:07:55 GMT
BTW, without the rubber feet it would be sliding about all over so thanks for adding those before sending it We have added a rubber ring now! Mk2 & G2 already! www.hifi88.cn/HPMK2p.jpg[/img][/quote] Hi Peter will that be on mine ?? cheers
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Post by clausdk on Mar 18, 2010 20:09:56 GMT
A very good price, most of us paid $89.99 plus $20 postage for the 6922 model, nice one I paid full price ;D ;D ;D But recieved a splendid service, so well worth it
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Post by Deleted on Mar 18, 2010 20:21:15 GMT
As a matter of interest, the old Indeed G1 circuit board is EXACTLY the same as the Miritiy, that Ian and myself have. ;D
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csdam
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Post by csdam on Mar 18, 2010 20:22:46 GMT
[/img][/quote] Hi Peter will that be on mine ?? cheers[/quote] It will come with a rubber foot in all items except 10 items sold in firstly!!
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Post by PinkFloyd on Mar 18, 2010 20:24:28 GMT
BTW, without the rubber feet it would be sliding about all over so thanks for adding those before sending it We have added a rubber ring now! Mk2 & G2 already! www.hifi88.cn/HPMK2p.jpg[/img] [/quote] Hi Peter, That's an excellent idea! Much better than the stick on types and you can easily remove the rubber rings.... superb When you have time, the bias setting details would be most appreciated. All the best, Mike.
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Post by Deleted on Mar 18, 2010 20:26:08 GMT
I will stick with my clear Silicon ones, they look a lot nicer than those, and more in keeping with the style of the Amp Peter!!
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csdam
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Post by csdam on Mar 18, 2010 20:36:50 GMT
[/img] [/quote] Hi Peter, That's an excellent idea! Much better than the stick on types and you can easily remove the rubber rings.... superb When you have time, the bias setting details would be most appreciated. All the best, Mike.[/quote] Yes Mike! We have a little bit trouble for specification given now, there are not the same data measure by meter for different tube, we also trimming easily with signal generator & oscilloscope. But I try to do it now. BTW thank for everybody on forum.
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leo
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Post by leo on Mar 18, 2010 20:40:32 GMT
The ground plane on the newer one should be better than the grounding for the old one
Just measured the voltages on the G2, just under 12v on left and right Anodes (pin1 and 6 ) Heater voltage is 5.09v This is with the stock tube
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csdam
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Post by csdam on Mar 18, 2010 20:46:29 GMT
The ground plane on the newer one should be better than the grounding for the old one Just measured the voltages on the G2, just under 12v on left and right Anodes (pin1 and 6 ) Heater voltage is 5.09v This is with the stock tube Yes, it should be different measurement by different tubes!
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Post by PinkFloyd on Mar 18, 2010 20:46:36 GMT
The G2 arrived today (thanks Mike) its a sweet looking little thing in the flesh isn't it After an hours warm up initial impressions , it goes plenty loud enough for these sensitive ears using HD250 linear II,I have the pot set at just under nine o'clock position. I've only used one source so far (Beresford Caiman) , going through a few random music tracks the sound is very pleasant , theres a warm bloom to the upper bass/mids. (valve rolling probably alter the signature quite noticeably ) certainly no sharp or edginess so far. I'd say this amp would go nicely with a source which is on the slightly thin and flat side as it would probably fill things out making for a more interesting listen. There does seem to be some high frequency roll off , maybe due to the Mosfets being high capacitance ? But to most I doubt this would be a problem , actually be a benefit for a hard edged source, its got quite a bit of kick too. I'll try the modded Buffalo23s later and at the weekend hopefully have a probe around That arrived fast Leo, I only posted it yesterday. You are correct regarding the Mosfets.... I replaced the stock Mosfets with IRF510 in my Bravo and there is a LOT more high end sparkle with them on board.... more "neutral" sounding..... They are only 26 pence each (the IRF510) so anyone who finds the top end slightly rolled off just fit a pair of IRF510 and you'll be laughing. Feel free to poke about Leo.... if you have a pair of IRF510 give them a try. You are also correct re: valves.... different types DO alter the sonic signature... The EH6922 are inherently "chocolaty" and "rubbery" sounding.... if you want to open the sonics up a bit then a European variant such as Siemens or Philips will do the trick.... I have tried a gold pin Mullard with very nice results (I just LOVE the Mullard signature).... the 6H23N are also VERY good.... As with anything musical, though, it's all a matter of personal taste.... the Electro Harmonix are an excellent starting point being quite forgiving of bad recordings, poor sources.... possibly the best valve to ship the amp with as it has a generally "pleasing" tonality to it. Please do be brutally honest with your appraisal Leo (taking cost into consideration / bang for the buck) and if there's any area of the design you feel could be improved please do comment on it, Peter will be interested. Enjoy the music. Mike.
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Post by Deleted on Mar 18, 2010 21:08:04 GMT
As a matter of interest, the old Indeed G1 circuit board is EXACTLY the same as the Miritiy, that Ian and myself have. ;D Here's the Miridy. It looks very similar to the G1 but half the price. Maybe someone with eagle eyes on components can do some bird spotting to compare with G1/G2. I'll compare with Miridy re: sound when I receive it. Ian
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Post by PinkFloyd on Mar 18, 2010 21:37:09 GMT
Ian..... From what I can gather both "Bravo" and "Miridy" are copies of the Indeed amp.... do you see a Bravo G2 and a Miridy G2? No..... reason being they haven't copied it yet ;D Have a read how Indeed came about www.6c33.com/eng/eng%201.htmJust like us, they are a group of enthusiasts from around the globe with a common goal to provide good music making equipment without the added BS and price tag..... They are delivering the goods and I welcome the "indeed" circle of audiofriends into our circle.... I hope we can learn from each other. Just as we are sitting here listening to our favourite music, so are these guys... we all share the same passion. Language skills may be a barrier (I certainly can't speak Chinese, let alone English!) but Peter can speak both Chinese AND English so the barriers are being broken down and we all will benefit from that. I welcome diversity and I respect the "quality" that is coming out of the Far East at the moment.... their audio industry is a LOT more active than ours.... I am a member of a few Chinese audio forums and, believe me, their passion "exceeds" ours.... they are fanatic about sound quality Yes.... the "Miridy" looks the same as the Indeed (minus the DALE resistors, the after sales support, and the opportunity to connect with millions of like minded Chinese audio lovers) You pays your money..........
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Post by Deleted on Mar 18, 2010 21:52:02 GMT
The ground plane on the newer one should be better than the grounding for the old one Just measured the voltages on the G2, just under 12v on left and right Anodes (pin1 and 6 ) Heater voltage is 5.09v This is with the stock tube If the heater voltage measurement is with the stock tube, it simply is NOT good enough. More attention needs to be paid to this area before being passed by QC. Frans has already made suggestions for improvements. Alex
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Post by PinkFloyd on Mar 18, 2010 22:41:09 GMT
The ground plane on the newer one should be better than the grounding for the old one Just measured the voltages on the G2, just under 12v on left and right Anodes (pin1 and 6 ) Heater voltage is 5.09v This is with the stock tube If the heater voltage measurement is with the stock tube, it simply is NOT good enough. More attention needs to be paid to this area before being passed by QC. Frans has already made suggestions for improvements. Alex Here we go...... Myself, Leo and Mick have said the G2 sounds "nice" but, all of a sudden, there's a dampener put on it..... "5.09" volts can't possibly sound good (from your armchair) I sent the amp out "as is" (as it came from Indeed)..... the "idea" of passing it around members was to gain feedback.... sooo...... "5.09" volts, how do we improve this Leo? Mike.
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csdam
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Post by csdam on Mar 18, 2010 23:03:36 GMT
If the heater voltage measurement is with the stock tube, it simply is NOT good enough. More attention needs to be paid to this area before being passed by QC. Frans has already made suggestions for improvements. Alex Here we go...... Myself, Leo and Mick have said the G2 sounds "nice" but, all of a sudden, there's a dampener put on it..... "5.09" volts can't possibly sound good (from your armchair) I sent the amp out "as is" (as it came from Indeed)..... the "idea" of passing it around members was to gain feedback.... sooo...... "5.09" volts, how do we improve this Leo? Mike. Hi Mike, Yes, he is right now, we have design in 5V DC to burn the heater!
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Post by Deleted on Mar 18, 2010 23:06:47 GMT
Here we go again.Mike's late night sarcastic side rears it's ugly head again. No wonder Matt got pissed off ! It has nothing to do with any armchair, and I didn't say it wouldn't sound good. You and I both know that 5.09V on a 6.3V filament is far from optimum. Roll in another tube with a slightly higher filament current draw and it will more than likely get even worse. Alex P.S. See also comments by Frans in reply 494 at the attached link about valves that are not recommended to be tried in these circuits. rockgrotto.proboards.com/index.cgi?board=b&action=display&thread=4948&page=33
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Post by PinkFloyd on Mar 18, 2010 23:16:21 GMT
Here we go again.Mike's late night sarcastic side rears it's ugly head again. No wonder Matt got pissed off ! It has nothing to do with any armchair, and I didn't say it wouldn't sound good. You and I both know that 5.09V on a 6.3V filament is far from optimum. Roll in another tube with a slightly higher filament current draw and it will get even worse. Alex Point taken mate.... 6.3V is optimal. I'm off to bed now to practice sarcasm on myself ;D Night night xx
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csdam
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Post by csdam on Mar 18, 2010 23:21:57 GMT
The traditional rule is not the law !! 6.3V is standard, so it sounds standard ! 5V is not reasonable, but we prove it sounds good ! We think with new idea, why not?
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Post by PinkFloyd on Mar 18, 2010 23:30:42 GMT
The traditional rule is not the law !! 6.3V is standard, so it sounds standard ! 5V is not reasonable, but we prove it sounds good ! We think with new idea, why not? Indeed! If it sounds good it must be good..... I won't argue over a "volt" .... I wouldn't stoop so low to pick up so little..... as long as there's "any" number of volts reaching the valve AND it sounds good I'm happy ;D
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leo
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Post by leo on Mar 18, 2010 23:38:59 GMT
Yes, I just listen to it as it came to start with, mainly because majority of others buying one will just unwrap it and plug it in. I doubt a lot of folks buying one even have a multimeter so I'm interested in seeing what its like straight from the box, setting bias and heater voltage yourself may be beyond what some owners are capable of so we need to know is it a simple plug and play amp or does it require some tuning .
5v for the heater is below spec , it should be able to be brought up by altering the resistors around the LM317's.
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csdam
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Post by csdam on Mar 18, 2010 23:45:14 GMT
If all devices build according to the standard specification, there will be the same performance and same effect. We have find out why the Hi End product sounds specially and high price? The answer here¡there are also out of spc !!
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csdam
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Post by csdam on Mar 18, 2010 23:50:09 GMT
6.3V will be bad sound, we try it before.
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csdam
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Post by csdam on Mar 18, 2010 23:56:04 GMT
I am not meaning that 6.3V is bad sound for any tubes with any circuit, I just say for my G2 only!
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