Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,398
Member is Online
|
Post by Bigman80 on Feb 20, 2020 22:03:49 GMT
Any idea on the parts cost for a dual mono 686? Or better still, mono blocks? A 286 would probably be enough for my needs. Not cheap. I was looking into it and its $1k just for the 686 boards. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 23, 2020 17:55:00 GMT
Would swapping out a silver OCC cable and switching to copper lead to a bit of a loss in bass, or is it more likely to be the amps?
What I mean by that is that these really show up poor recordings, so even though they are really good, are they the best for home use?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 23, 2020 18:49:46 GMT
I have the sound that I have been looking for all weekend back. Due to the change in amps, I needed to tweak the subwoofer slightly.
The FH3s need all the help they can get a low volume levels.
|
|
Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,398
Member is Online
|
Post by Bigman80 on Feb 23, 2020 18:52:54 GMT
The amps show you the recording and only you will know if they are right for you but personally I would not go back to being lied to by hifi equipment lol
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 23, 2020 19:00:28 GMT
They sound is absolutely spot on now.
I have soldered some space connectors on to the ends of the sub cable to make connecting it easier.
I may even need to turn it down a touch.
The problem is that the FBs are not even getting a sniff yet.
I may have to put a nice set of valves in as spares to see if I can temp anybody to part with some cash for them.
|
|
Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,398
Member is Online
|
Post by Bigman80 on Feb 23, 2020 19:05:45 GMT
They sound is absolutely spot on now. I have soldered some space connectors on to the ends of the sub cable to make connecting it easier. I may even need to turn it down a touch. The problem is that the FBs are not even getting a sniff yet. I may have to put a nice set of valves in as spares to see if I can temp anybody to part with some cash for them. Patience mate. It may take a while but someone will see them and grab them |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 28, 2020 6:32:03 GMT
My new amps seem to make a small pop when I turn them on. This does not seem normal to me, so maybe I will have to modify them slightly.
|
|
Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,398
Member is Online
|
Post by Bigman80 on Feb 28, 2020 8:01:52 GMT
My new amps seem to make a small pop when I turn them on. This does not seem normal to me, so maybe I will have to modify them slightly. Could just be the inrush of current. Soft starts? |
|
Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,398
Member is Online
|
Post by Bigman80 on Feb 28, 2020 8:28:23 GMT
Could just be the inrush of current. Soft starts? I wish you had bought ten too. I’d have been a customer lol. Wrong thread Andrew? You of ATOC9? |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 28, 2020 8:34:21 GMT
I hate getting involved in tech debates because I have so little knowledge. One thing I’ve seen didn’t seem to ring true to me though. I apologise in advance if I have the wrong end of the stick, or even the wrong stick.
I’ve seen references to upscaling not affecting audible frequencies. That’s not how I understood it. I thought increasing sample frequency was simply about the number of times a second the wave was sampled. Effectively giving more dots to join in order to give a smoother wave. Surely this would affect all frequencies?
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 28, 2020 8:35:12 GMT
Wrong thread Andrew? You of ATOC9? How the heck did I mange that? Will re-post lol |
|
|
|
Post by macca on Feb 28, 2020 8:57:08 GMT
I hate getting involved in tech debates because I have so little knowledge. One thing I’ve seen didn’t seem to ring true to me though. I apologise in advance if I have the wrong end of the stick, or even the wrong stick. I’ve seen references to upscaling not affecting audible frequencies. That’s not how I understood it. I thought increasing sample frequency was simply about the number of times a second the wave was sampled. Effectively giving more dots to join in order to give a smoother wave. Surely this would affect all frequencies? Increasing the sampling frequency increases the highest frequency that can be reproduced, which is half the sampling frequency. So sampling at 44.1 Khz as per CD will mean the highest frequency you can reproduce is 22.5Khz. But the waveform below 22.5 Khz will be reproduced perfectly, no information is lost. Forget the 'joining the dots/missing dots' thing. It doesn't work like that.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 28, 2020 9:35:54 GMT
My new amps seem to make a small pop when I turn them on. This does not seem normal to me, so maybe I will have to modify them slightly. Could just be the inrush of current. Soft starts? I am thinking of building the 86 or 686 power modules and adding them, as I think the boards in there currently don't have a soft start. I am not sure if there is anything else I can do that is easier. I will try powering them up with the volume on the pre right down. It is not a big pop, but it annoys me. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 28, 2020 13:06:47 GMT
I have done a bit of reading.
The Guardian 86 may be the best bet?
It seems designed for the issue I have?
|
|
Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,398
Member is Online
|
Post by Bigman80 on Feb 28, 2020 13:40:43 GMT
I have done a bit of reading. The Guardian 86 may be the best bet? It seems designed for the issue I have? K, I wouldnt worry too much if you are going to built a 686. Seems a bit arse about face to spend on something you are selling? |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 28, 2020 16:08:58 GMT
The 686 is going to be long term, built over say a year or more as I gather the bits together.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 28, 2020 19:36:28 GMT
Tom has suggested a 10kR across the RCA inputs as it is the THAT1200 bias current causing the pop.
Other option is a balanced pre, but I am less keen on that....
|
|
Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,398
Member is Online
|
Post by Bigman80 on Feb 28, 2020 20:04:34 GMT
The 686 is going to be long term, built over say a year or more as I gather the bits together. Fair enough. Tom's advice is sensible |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 29, 2020 6:57:44 GMT
So if I understand correctly, I need to add a resistor in the RCA plug of my cable.
4.7 k seems to be the way forward, so I need to check with Mr Firebottle if this creates a problem with the Kin.
|
|
|
|
Post by macca on Feb 29, 2020 8:20:01 GMT
I have done a bit of reading. The Guardian 86 may be the best bet? It seems designed for the issue I have? That will do the job but it seems like pointless expense and hassle to me, some amps do make that pop when powered up, it isn't going to cause any problems or damage your speakers. |
|
|
|
Post by firebottle on Feb 29, 2020 9:17:21 GMT
The only problem with 4.7k might be a small loss of low bass, as the output cap in the KIN is only 2.2uF.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 29, 2020 10:59:30 GMT
I have done a bit of reading. The Guardian 86 may be the best bet? It seems designed for the issue I have? That will do the job but it seems like pointless expense and hassle to me, some amps do make that pop when powered up, it isn't going to cause any problems or damage your speakers. I think you are probably right. It is a small pop. The plan is still a 686 which does not do this, so I may advance these plans slightly, depending on my MOT next week. |
|
|
|
Post by hammer on Feb 29, 2020 12:02:25 GMT
They sound is absolutely spot on now. I have soldered some space connectors on to the ends of the sub cable to make connecting it easier. I may even need to turn it down a touch. The problem is that the FBs are not even getting a sniff yet. I may have to put a nice set of valves in as spares to see if I can temp anybody to part with some cash for them. Hi Kevin. If you decide to put your Telefunken valves up for sale could I have first refusal please,as I am still using and loving my FB monos☺☺ |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 29, 2020 12:19:56 GMT
The Telefunken or the rather nice Philips SQ?
|
|
|
|
Post by hammer on Feb 29, 2020 12:31:06 GMT
Which did you prefer? I know Ollie liked the Tele's a lot when he had the fb's.I am still using the ones that Alan fitted.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Feb 29, 2020 12:33:30 GMT
A good question.
To be honest I have never got round to fitting the Philips, but they are supposed to be very good.
|
|
|
|
Post by hammer on Feb 29, 2020 12:39:39 GMT
Ah ok. As I said if you do decide to part with them I would be very interested
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Mar 1, 2020 19:47:52 GMT
Well, there has been signs of interest on the Monos. Maybe I should plug them back in and see if I am making the right choice.
Today I fitted my AT20SLa. I have to say it is a stunning cartridge. It seems quite neutral, but well detailed.
|
|
Bigman80
Grandmaster
The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,398
Member is Online
|
Post by Bigman80 on Mar 1, 2020 22:13:29 GMT
Well, there has been signs of interest on the Monos. Maybe I should plug them back in and see if I am making the right choice. Today I fitted my AT20SLa. I have to say it is a stunning cartridge. It seems quite neutral, but well detailed. Wont hurt to try |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Mar 3, 2020 20:34:01 GMT
Interestingly enough the AT20SLa has a frequency response of 5 to 50 kHz.
How much of that is audible?
|
|
