Ron’s New System

[adyc]

Which dimension do you mean, exactly?

Left ribbon driver to left ear?

Midpoint between the speakers to nose?

Tweeter to listening position

 

[Ron Resnick]

Tweeter to listening position

I don't have a tweeter. Ribbon panel to listening position is about 12' 8".

 

[KeithR]

Don basically agreed with these initial impressions of removing all of the absorption from the front wall. He thinks that it really took months for the ribbon drivers to break in and lose their initial edginess.

He agrees with me that maybe there's a little bit too much energy off of the front wall now, and that putting back a little bit of absorption, or experimenting with diffusion, might be worthwhile.

There is no way to prove it, so don't ask me to, but I really think that J.R. was on the right track to dampen the reverberation between the two closest parallel walls in the room near the ceiling. I might have thought a priori that removing all of the absorption from the front wall would result in an unhappy increase in brightness, but it hasn't.

I removed from the front wall four 24 inch wide absorption panels. I'm tempted to order two 12 inch or 18 inch wide absorption panels, and position them right behind the ribbon drivers, to reduce just slightly the energy reflecting off the front wall.

Think you’re at the point of sitting back for a few weeks/months and just enjoying the sound. You’ve had a large number of recent changes, too.

 

[Ron Resnick]

Think you’re at the point of sitting back for a few weeks/months and just enjoying the sound. You’ve had a large number of recent changes, too.

I had several hours of tube hell this afternoon trying to chase down noise in the right channel Jadis.

 

[treitz3]

Sir, you may not want to do this....but here is my suggestion.

Create another thread about his and document it. Your issue and the solution. It may help others....Link it here for those who may want to know. When the issue is resolved? Resume.

I hate this for you. Nothing is more frustrating than an audio issue. Best of luck (or knowledge) for a speedy resolution to this issue.

Tom

 

[Ron Resnick]

Sir, you may not want to do this....but here is my suggestion.

Create another thread about his and document it. Your issue and the solution. It may help others....Link it here for those who may want to know. When the issue is resolved? Resume.

I hate this for you. Nothing is more frustrating than an audio issue. Best of luck (or knowledge) for a speedy resolution to this issue.

Tom

Thank you very kindly, Tom! I appreciate the empathy!

Tube people don't love tube amplifiers for their low maintenance and their no fuss/no muss convenience!

After meticulously swapping one tube after another and powering up and down all afternoon I think I discovered that the noise was arising from a tube/tube socket glitch. I listened to a few tracks tonight and all seemed very quiet.

 

[Ron Resnick]

Oh, and along the tube journey today I swapped out fancy NOS Mullards and swapped in very fancy NOS Mullards.

But compared to the incumbents which were fully burned in, the new ones sound bright.

 

[Argonaut]

After meticulously swapping one tube after another and powering up and down all afternoon I think I discovered that the noise was arising from a tube/tube socket glitch. I listened to a few tracks tonight and all seemed very quiet.

Have you cleaned your pins Ron ? The simple act of swapping valves in and out can go some way to detaching any crud that may be responsible for your anomaly .

 

[Ron Resnick]

Have you cleaned your pins Ron ?

Very meticulously, yes. And the tube sockets, too.

And I don't touch the glass.

 

[Argonaut]

and swapped in very fancy NOS Mullards.

Might you disclose their identity ?

 

[Johan K]

By the way Ron..

Saw the videoclip of your live stream from your listening room the other day… I liked the clip very much and did get a good feel for your place. Very very nice place you have there !

/ Johan

 

[Ron Resnick]

Thank you!

 

[Ron Resnick]

Might you disclose their identity ?

 

[DasguteOhr]

Very meticulously, yes. And the tube sockets, too.

And I don't touch the glass.

Sometimes there is a completely banal explanation for this. E.g. Siemens tubes have thicker pins than Telefunken tubes (noval sockets 9 pin). Simply bend the thinner pins slightly to make it harder for the tubes to go in. and the noises disappeared. If you don't believe it, take a caliper.

 

[Argonaut]

But compared to the incumbents which were fully burned in, the new ones sound bright.

Have they settled in a little since their introduction Ron ? , If your signature presentation remains a tad hot for your taste, you might have to reconsider the Telefunkens! … For my part I would also consider Mullard MilSpec M8136 / CV 4003

ECC82/CV4003/M8136-MULLARD

These are the original Mullard ECC82 M8136 CV4003 which is the special military long life ECC82 that was specially designed for the British forces. These valves are unique in construction as Mullard were the only factory to use a box plate anode construction and were also made to the highest...

www.watfordvalves.com

“ The valve produces the most detailed mid-range response of any ECC82 type ever made. This trademark sound has led many audio reviews to state that this is the best of its type ever made.
The valve has a super warm sound with plenty of mid-range detail. Indeed in our test reports the female vocal and string sections were simply stunning. “

 

[DasguteOhr]

View attachment 121518

Pity, you have the original boxes and I have the original tubes that go with them. I only have follow-up boxes. Have fun with your nos mullards.

 

[Ron Resnick]

Sometimes there is a completely banal explanation for this. E.g. Siemens tubes have thicker pins than Telefunken tubes (noval sockets 9 pin). Simply bend the thinner pins slightly to make it harder for the tubes to go in. and the noises disappeared. If you don't believe it, take a caliper.

I believe you! It makes perfect sense.

The problem socket is occupied by a Mullard 12AX7. Do Mullard 12AX7s tend to have thinner pins or thicker pins?

 

[Ron Resnick]

Have they settled in a little since their introduction Ron ? , If your signature presentation remains a tad hot for your taste, you might have to reconsider the Telefunkens!

Or I would just put back in the Mullards I have been using that I think are slightly less fancy than these new NOS ones.

 

[Ron Resnick]

Pity, you have the original boxes and I have the original tubes that go with them. I only have follow-up boxes. Have fun with your nos mullards.

Thank you!

 

[DasguteOhr]

Have they settled in a little since their introduction Ron ? , If your signature presentation remains a tad hot for your taste, you might have to reconsider the Telefunkens! … For my part I would also consider Mullard MilSpec M8136 / CV 4003

ECC82/CV4003/M8136-MULLARD

These are the original Mullard ECC82 M8136 CV4003 which is the special military long life ECC82 that was specially designed for the British forces. These valves are unique in construction as Mullard were the only factory to use a box plate anode construction and were also made to the highest...

www.watfordvalves.com

“ The valve produces the most detailed mid-range response of any ECC82 type ever made. This trademark sound has led many audio reviews to state that this is the best of its type ever made.
The valve has a super warm sound with plenty of mid-range detail. Indeed in our test reports the female vocal and string sections were simply stunning. “

when you want the golden glow midrange a good choice,but the smooth plate ecc83 tfk does it too with more dynamic. my opion