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jakeyb77

Valve Amp Recommendations

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3 minutes ago, aussievintage said:

Would that be pushpull pentode (or ultralinear) vs pushpull triode?  Would be better if it was push-pull triode in class A if comparing to single ended.

Tetrode ;) ultralinear vs push pull triode, but AB; no idea how much class A bias.

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On 05/09/2019 at 7:29 PM, jakeyb77 said:

The lead lining detail in the reference models is quite a lot more detailed than I expected also. 

Is that what makes the difference?    I have had the Eclipse reference speakers for a week or so and can't stop listening to them.   They are certainly solidly built :)

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1 minute ago, aussievintage said:

Is that what makes the difference?    I have had the Eclipse reference speakers for a week or so and can't stop listening to them.   They are certainly solidly built :)

I’ll take a picture for you tomorrow of the inside of the reference cabinets when I visit Aranmar.  

It’s felt onto the cabinet then lead to the felt then another layer of thick felt over the lead. The lead is sandwiched in felt to avoid any resonance. 

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On 04/09/2019 at 7:49 PM, jakeyb77 said:

Ok, so I may be looking for a valve amp around the $3000 mark. 

I have the Consonance Cyber 880i in mind but wondering what else can be suggested around this price. 

$3500 max 

 

Which speakers are you proposing to use ?,  There are fundamental issues how power is delivered with SS vs valve , explained here:    http://education.lenardaudio.com/en/14_valve_amps_7.html

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29 minutes ago, jakeyb77 said:

I’ll take a picture for you tomorrow of the inside of the reference cabinets when I visit Aranmar.  

 

I would like that, thanks.

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1 hour ago, stereo coffee said:

Which speakers are you proposing to use ?,  There are fundamental issues how power is delivered with SS vs valve , explained here:    http://education.lenardaudio.com/en/14_valve_amps_7.html

Speakers listed in the thread 😉

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16 minutes ago, andyr said:

 

Very interesting article, sc.  :thumb:

 

Andy

 

 

Not completely accurate though.      

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1 hour ago, jakeyb77 said:

Speakers listed in the thread 😉

But which pair ?   JBL 4410a- Osborn F1- Tannoy HPD 315a   or do you use each at different times. 

the JBL is a nominal 8 ohm speaker 

the Tannoy is  a nominal 8 ohm speaker

and the Osborn F1 has a quoted 4 ohm minimum at 200 hz 

 

Each are not ideally suited to valve amps, if you want to use a valve amp with lower impedance 

speakers you can expect less power delivery than with an equivalent solid state amplifier. 

That may be a compromise you are happy to accept.  

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3 minutes ago, aussievintage said:

 

Not completely accurate though.      

Can you identify where said inaccuracies are please ? 

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5 minutes ago, stereo coffee said:

But which pair ?   JBL 4410a- Osborn F1- Tannoy HPD 315a   or do you use each at different times. 

the JBL is a nominal 8 ohm speaker 

the Tannoy is  a nominal 8 ohm speaker

and the Osborn F1 has a quoted 4 ohm minimum at 200 hz 

 

Each are not ideally suited to valve amps, if you want to use a valve amp with lower impedance 

speakers you can expect less power delivery than with an equivalent solid state amplifier. 

That may be a compromise you are happy to accept.  

That’s a signature. The thread states Osborn Epitome and bass bins. 

 

Edited by jakeyb77

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1 minute ago, stereo coffee said:

Can you identify where said inaccuracies are please ? 

 

 

A few quick examples...

 

Solid State amps were bright (not valve amps as stated) and  overloaded with nasty sounding distortion, due to hard clipping and power supplies with less sag.  That's the real reason.

 

Also, assumptions about 50% UL taps (many not 50%).   

 

Also, 4 ohm tweeters with 8 ohm mids?    

 

 

 

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5 minutes ago, jakeyb77 said:

That’s a signature. The thread states Osborn Epitome and bass bins. 

 

https://www.osbornloudspeakers.com.au/epitome

A nominal 4 ohm speaker with bass bins, so not ideal with a valve amplifier for the reasons outlined in the article 

http://education.lenardaudio.com/en/14_valve_amps_7.html

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2 minutes ago, stereo coffee said:

https://www.osbornloudspeakers.com.au/epitome

A nominal 4 ohm speaker with bass bins, so not ideal with a valve amplifier for the reasons outlined in the article 

http://education.lenardaudio.com/en/14_valve_amps_7.html

Considering Greg actually designs (voices) his speakers with valve amps I suspect that this is not the complete picture :D

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6 minutes ago, stereo coffee said:

https://www.osbornloudspeakers.com.au/epitome

A nominal 4 ohm speaker with bass bins, so not ideal with a valve amplifier for the reasons outlined in the article 

http://education.lenardaudio.com/en/14_valve_amps_7.html

I have more than enough SS ability in the stable. 

Therefore would like a valve amp again for fun. 

As said Osborn’s are well known to be matched with valves. 

No offence but My post was for recommendations in the price range rather than opinions of suitability etc. 

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7 minutes ago, aussievintage said:

 

 

A few quick examples...

 

Solid State amps were bright (not valve amps as stated) and  overloaded with nasty sounding distortion, due to hard clipping and power supplies with less sag.  That's the real reason.

 

Also, assumptions about 50% UL taps (many not 50%).   

 

Also, 4 ohm tweeters with 8 ohm mids?    

 

 

 

You are though not quoting the text, rather an assumption IMO that you have , leading to the conclusion that the article is correct. 

 

This summary below  in particular is the key to understanding the difference of valve amps vs solid state with regard to the

fundamental difference with power delivery.         http://education.lenardaudio.com/en/14_valve_amps_7.html     

 

Less power delivery, may or may not be a problem for your musical enjoyment  but it is important in these discussions,

and exemplifies a element of care from one forum member to the next  to show the differences with each type of amplifier

rather than say nothing at all. 

  • Valve amp       power is directly proportional to speaker Impedance
          therefore   power increases as the speaker Impedance rises.
     
  • Solid-state     power is inversely proportional to speaker Impedance
          therefore  power decreases as the speaker Impedance rises.

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