Incidentally, did you notice the Graham Slee Voyager got a 5 star review this month? I'd be surprised if it is anything more than a branded CMoy variant.
I think now is the time to point out one or two short-comings in my implementation of the CMoy Tangent amp.
I placed the volume pot between the input and output mini jack (see picture below). Seemed like a good idea at the time. What it does mean is that the pot is a bit difficult to operate when the mini jack sockets are being used. Solution - put the pot at one end (next to the LED).
The other minor blunder is that I managed to connect the volume pot upside down. So, off is at 1 o'clock. Not a problem. But I would definately regard this a 'quality' issue if I'd bought the amp ready made. Solution - make sure the solder connections on the pot are facing down, towards the board when hooking up.
The final issue is the battery compartment lid. As I've used the full board, the board tends to foul the battery compartment lid. Another 'quality' issue....but only really impacts when you have to change the battery. I'm still on my first. Solution - hmmmm. Dunno. Haven't really been bothered enough to think about it!
I placed the volume pot between the input and output mini jack (see picture below). Seemed like a good idea at the time. What it does mean is that the pot is a bit difficult to operate when the mini jack sockets are being used. Solution - put the pot at one end (next to the LED).
The other minor blunder is that I managed to connect the volume pot upside down. So, off is at 1 o'clock. Not a problem. But I would definately regard this a 'quality' issue if I'd bought the amp ready made. Solution - make sure the solder connections on the pot are facing down, towards the board when hooking up.
The final issue is the battery compartment lid. As I've used the full board, the board tends to foul the battery compartment lid. Another 'quality' issue....but only really impacts when you have to change the battery. I'm still on my first. Solution - hmmmm. Dunno. Haven't really been bothered enough to think about it!
PJPro:I'd be surprised if it is anything more than a branded CMoy variant.
"There's no denying that the Voyager is an expensive piece of kit. It's not very practical or good looking either. And there are far more economic ways of beefing up your portable audio experience - if you're happy to go with the DIY approach, you can buy a decent amp on eBay (such as the CMOY-based amp mentioned above) for a fraction of the price.
But if you want the best, at least in the world of high-end audio, you have to be prepared to pay for it, and this is undeniably there or thereabouts. For this level of quality, £179 to me sounds like a pretty good deal."ÿ
- Some reviewerÿ
"There's no denying that the Voyager is an expensive piece of kit. It's not very practical or good looking either. And there are far more economic ways of beefing up your portable audio experience - if you're happy to go with the DIY approach, you can buy a decent amp on eBay (such as the CMOY-based amp mentioned above) for a fraction of the price.
But if you want the best, at least in the world of high-end audio, you have to be prepared to pay for it, and this is undeniably there or thereabouts. For this level of quality, £179 to me sounds like a pretty good deal."ÿ
- Some reviewerÿ
If I go to Bristol, I'll have to see if someone on the Graham Slee stand will let me have a look inside. Until then, I stand by my earlier comment. I'd be surprised if it's anything more than a branded CMoy variant. Of course, it is possible to spend a fortune on boutique components even for the CMoy.
No worries PJ, there is no rush.ÿ
I have just ordered most of the parts for the M3 headphone amp (with o11 power supply). I look forward to comparing the to two amps; I wonder how substantial the difference will be. And then the next step would be to compare them to commercial amps...ÿ
I have just ordered most of the parts for the M3 headphone amp (with o11 power supply). I look forward to comparing the to two amps; I wonder how substantial the difference will be. And then the next step would be to compare them to commercial amps...ÿ
Awesome. Did you go the whole hog with the power supply - anti vandel switch and all?
Did you notice the Headwize site was down for a few days? I would have been deeply worried if I had just splashed the cash for an M3 and power supply.
How much did the components cost you? Are you going to start a new thread? M3 DIY Headphone Amplifier might be good?
Did you notice the Headwize site was down for a few days? I would have been deeply worried if I had just splashed the cash for an M3 and power supply.
How much did the components cost you? Are you going to start a new thread? M3 DIY Headphone Amplifier might be good?
Octopo:
- Some reviewerÿ
By that PJ I wasn't saying you're wrong at all - I wouldn't be surprised if you are right. I just hope that if I buy a Solo the parts and pedigree of manufacture will be worth the price tag.ÿ
- Some reviewerÿ
By that PJ I wasn't saying you're wrong at all - I wouldn't be surprised if you are right. I just hope that if I buy a Solo the parts and pedigree of manufacture will be worth the price tag.ÿ
I haven't heard it myself....but will see if I can have a go if I get to Bristol.
I think it is funny to read the description at Stone audio. The Bass Boost bit is a thinly veiled attack at the M3 and PPA DIY headphone amps. Infact, a lot of the comments seem directed at undermining the confidence in the DIY designs. Perhaps he is right. I don't know.
I think it is funny to read the description at Stone audio. The Bass Boost bit is a thinly veiled attack at the M3 and PPA DIY headphone amps. Infact, a lot of the comments seem directed at undermining the confidence in the DIY designs. Perhaps he is right. I don't know.
Unfortunately Stoneaudios site is fairly complex and doesn't allow deep linking (much to their disadvantage). Give us a clue which page you were on and I'll have a google.
PJPro:Awesome. Did you go the whole hog with the power supply - anti vandle switch and all?Did you notice the Headwize site was down for a few days? I would have been deeply worried if I had just splashed the cash for an M3 and power supply.How much did the components cost you? Are you going to start a new thread? M3 DIY Headphone Amplifier might be good?
ÿ
Anti vandle switch?! No idea what that is!
ÿThe components have cost about 130 GBP so far, which covers all the caps, resistors etc., cases various miscellaneous bits and the M3 circuit board. I have not yet got/ordered the o11 circuit board (new stock due within a week or so, hopefully) or the opamps. I think that pretty much covers it...
ÿI may start a thread briefly documenting my build, if for no other purpose than to give someone someday something to read if they are interested in completeing the same project.ÿCan never have too much information available... It will probably be a while though, depending on when the bits arrive/which bits I have forgotten etc. etc.
ÿ
Anti vandle switch?! No idea what that is!
ÿThe components have cost about 130 GBP so far, which covers all the caps, resistors etc., cases various miscellaneous bits and the M3 circuit board. I have not yet got/ordered the o11 circuit board (new stock due within a week or so, hopefully) or the opamps. I think that pretty much covers it...
ÿI may start a thread briefly documenting my build, if for no other purpose than to give someone someday something to read if they are interested in completeing the same project.ÿCan never have too much information available... It will probably be a while though, depending on when the bits arrive/which bits I have forgotten etc. etc.
PJPro:Sorry....I was looking at the page for the Solo.
Ah, well will be interesting to hear your views if you get the chance of a listen at Bristol.ÿ
Ah, well will be interesting to hear your views if you get the chance of a listen at Bristol.ÿ
Olli1324:
Anti vandle switch?! No idea what that is!
Apologies. Typo. Should be anti vandal switch. Very nice but more components and a board required. If you look at the M3 gallery you'll notice that a few have sweet switches. Take a look at the epsilon24 page on AMB Labs.
I've still not sorted out that kit. Sorry. I'll do it this weekend.
Anti vandle switch?! No idea what that is!
Apologies. Typo. Should be anti vandal switch. Very nice but more components and a board required. If you look at the M3 gallery you'll notice that a few have sweet switches. Take a look at the epsilon24 page on AMB Labs.
I've still not sorted out that kit. Sorry. I'll do it this weekend.
Octopo:
PJPro:Sorry....I was looking at the page for the Solo.
Ah, well will be interesting to hear your views if you get the chance of a listen at Bristol.ÿ
OK
PJPro:Sorry....I was looking at the page for the Solo.
Ah, well will be interesting to hear your views if you get the chance of a listen at Bristol.ÿ
OK
PJPro:Olli1324:
Anti vandle switch?! No idea what that is!
Apologies. Typo. Should be anti vandal switch. Very nice but more components and a board required. If you look at the M3 gallery you'll notice that a few have sweet switches. Take a look at the epsilon24 page on AMB Labs.I've still not sorted out that kit. Sorry. I'll do it this weekend.
I didn't see that switch before... As nice as it looks, I won't be pursuing it; it will just add to the final costs! (I am currently hoping Texas Instruments will give me some free samples (OPA637/627), after seeing that it will probably cost around 40 GBP for the opamps!)
The weekend sounds good for the cmoy.
ÿCheersÿ
Anti vandle switch?! No idea what that is!
Apologies. Typo. Should be anti vandal switch. Very nice but more components and a board required. If you look at the M3 gallery you'll notice that a few have sweet switches. Take a look at the epsilon24 page on AMB Labs.I've still not sorted out that kit. Sorry. I'll do it this weekend.
I didn't see that switch before... As nice as it looks, I won't be pursuing it; it will just add to the final costs! (I am currently hoping Texas Instruments will give me some free samples (OPA637/627), after seeing that it will probably cost around 40 GBP for the opamps!)
The weekend sounds good for the cmoy.
ÿCheersÿ
Hi, this post is very interesting for me since I am in the middle of the same tangent Cmoy process myself, very excited!
I have just bought all the parts (I thought ) I need, but now I realize that your way is better. It is funny that I have found myself making the same decisions as you did about the precise resistors and the capacitors, and found myself at the same dilemma: cannot cut the board, so have no space left for the second Battery! This means I need to follow your footsteps ! It is a pity I did not find this page earlier, now I might need to pay 12$ again for the postage from Mouser... This makes the build price hike and I have not started soldering yet..
I have a couple of questions if you do not mind:
1) if it is not too much to ask, can you do some kind of a connection schematic for your version, since you have diverted from the Tangent one... This might be a great and NATURAL addition to the tangent tutorial!
2)did you try the oscilloscope test? How did it go?
I have bought apparently the wrong POT, I would like the Alps 10K (RK097) that has the built in power switch. Also maybe you have an extra volume knob and the extra parts needed for the Buffered TLE2426-Based Virtual Ground Driver ? How about the protoboard?
This is my first post here and I hope I am not asking too much for the first time
All the best,
m-leon
I have just bought all the parts (I thought ) I need, but now I realize that your way is better. It is funny that I have found myself making the same decisions as you did about the precise resistors and the capacitors, and found myself at the same dilemma: cannot cut the board, so have no space left for the second Battery! This means I need to follow your footsteps ! It is a pity I did not find this page earlier, now I might need to pay 12$ again for the postage from Mouser... This makes the build price hike and I have not started soldering yet..
I have a couple of questions if you do not mind:
1) if it is not too much to ask, can you do some kind of a connection schematic for your version, since you have diverted from the Tangent one... This might be a great and NATURAL addition to the tangent tutorial!
2)did you try the oscilloscope test? How did it go?
I have bought apparently the wrong POT, I would like the Alps 10K (RK097) that has the built in power switch. Also maybe you have an extra volume knob and the extra parts needed for the Buffered TLE2426-Based Virtual Ground Driver ? How about the protoboard?
This is my first post here and I hope I am not asking too much for the first time
All the best,
m-leon
Norayr Matevosyan:
1) if it is not too much to ask, can you do some kind of a connection schematic for your version, since you have diverted from the Tangent one... This might be a great and NATURAL addition to the tangent tutorial!
I posted the schematic earlier in the post. Here it is again.
Norayr Matevosyan:
2)did you try the oscilloscope test? How did it go?
No. Unfortunately, we are just too busy at work to divert effort towards messing about with £30 amps. Pity.
1) if it is not too much to ask, can you do some kind of a connection schematic for your version, since you have diverted from the Tangent one... This might be a great and NATURAL addition to the tangent tutorial!
I posted the schematic earlier in the post. Here it is again.
Norayr Matevosyan:
2)did you try the oscilloscope test? How did it go?
No. Unfortunately, we are just too busy at work to divert effort towards messing about with £30 amps. Pity.
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