2359glenn | studio

[whirlwind]

 

 

Different then the OTL as it is a amp with output transformers and it can drive low impedance phones.
I think it sounds as good as the 300B just less power. Uses the same Lundahl transformers and high quality parts.

Glenn,
Are you going to be offering this amp in the future? Very interested

Yes
Might sell this one and build another.
Not the best for a tube roller not many tubes to roll only the older EL3 and different brands of EL3N tubes.

Interesting, what are you thinking of building, Glenn ?
 
Something totally different, or a modification of the EL3N amp ?

 

[gibosi]

 
Might sell this one and build another.
Not the best for a tube roller not many tubes to roll only the older EL3 and different brands of EL3N tubes.

 
For those who are not inveterate tube rollers like myself, maybe this is an advantage? lol
 
With an SQ comparable to the 300B, for considerably less money, this could be very appealing to those folks who want a transformer-coupled amp to use with low-impedance phones. And further, EL3 and EL3N are dirt cheap compared to 300Bs, which makes the total package even more affordable.

 

[2359glenn]

 

 

 

Different then the OTL as it is a amp with output transformers and it can drive low impedance phones.
I think it sounds as good as the 300B just less power. Uses the same Lundahl transformers and high quality parts.

Glenn,
Are you going to be offering this amp in the future? Very interested

Yes
Might sell this one and build another.
Not the best for a tube roller not many tubes to roll only the older EL3 and different brands of EL3N tubes.

Interesting, what are you thinking of building, Glenn ?
 
Something totally different, or a modification of the EL3N amp ?

I was just saying if I sell it I will build another just like it.
Sounds great as good as a 300B amp just not the power 3 watts instead of 8 with a 300B.
I don't listen that loud anymore to need 8 watts .
And the EL3N is $25 or so allot cheaper then a good 300B at $1K+

 

[Rossliew]

 
I was just saying if I sell it I will build another just like it.
Sounds great as good as a 300B amp just not the power 3 watts instead of 8 with a 300B.
I don't listen that loud anymore to need 8 watts .
And the EL3N is $25 or so allot cheaper then a good 300B at $1K+

Glenn, would you say the amp sounds more like a solid state amp or the typical lusher tube sound?

 

[2359glenn]

 

 
I was just saying if I sell it I will build another just like it.
Sounds great as good as a 300B amp just not the power 3 watts instead of 8 with a 300B.
I don't listen that loud anymore to need 8 watts .
And the EL3N is $25 or so allot cheaper then a good 300B at $1K+

Glenn, would you say the amp sounds more like a solid state amp or the typical lusher tube sound?

More the tube sound I would say but it has been a long time since I listened to SS.

 

[2359glenn]

The only thing I might change is the rectifier to a 5 volt octal so it could use all the 5 volt rectifiers 5Y3 , 5U4 GZ34 , GZ37.

 

[gibosi]

I think this is a very good idea. And then, if someone wants to use the AZ4, as in your original design, inexpensive adapters are available.

 

[whirlwind]

  The only thing I might change is the rectifier to a 5 volt octal so it could use all the 5 volt rectifiers 5Y3 , 5U4 GZ34 , GZ37.

 
That sounds interesting, could roll rectifiers

 

[2359glenn]

 

  The only thing I might change is the rectifier to a 5 volt octal so it could use all the 5 volt rectifiers 5Y3 , 5U4 GZ34 , GZ37.

 
That sounds interesting, could roll rectifiers

I should have done that in the first place but I wanted it to use all crazy side pin tubes.
And the AZ4 gives a perfect 250 volt B+ to the EL3Ns.

 

[Rossliew]

I should have done that in the first place but I wanted it to use all crazy side pin tubes.
And the AZ4 gives a perfect 250 volt B+ to the EL3Ns.

Could one use a hexfred in place of the AZ4?

 

[2359glenn]

 

I should have done that in the first place but I wanted it to use all crazy side pin tubes.
And the AZ4 gives a perfect 250 volt B+ to the EL3Ns.

Could one use a hexfred in place of the AZ4?

Yes the EL3N can actually handle 275 volts and all filter capacitors are 450 volts.

 

[gibosi]

What is the minimum current that a rectifier needs to be able to provide in your EL3N amp?

 

[2359glenn]

  What is the minimum current that a rectifier needs to be able to provide in your EL3N amp?

100ma would be enough I was going to use a AZ1 but had to much voltage drop so switched to the AZ4                                    

 

[whirlwind]

 

 

  The only thing I might change is the rectifier to a 5 volt octal so it could use all the 5 volt rectifiers 5Y3 , 5U4 GZ34 , GZ37.

 
That sounds interesting, could roll rectifiers

I should have done that in the first place but I wanted it to use all crazy side pin tubes.
And the AZ4 gives a perfect 250 volt B+ to the EL3Ns.

Could you make it to use both a 5 volt octal rectifier and also the AZ4
 
AZ4 does sound like the perfect tube for the EL3N's
 
I agree that three watts should be plenty for any headphone...maybe the exception being the HE-6......that headphone is not on my radar anyway

 

[gibosi]

Unfortunately, the AZ4 uses that wacky European side contact base. So in order for his amp to use both, Glenn would have to install two rectifier sockets, one octal and one side contact base. But as I mentioned above, the easiest solution to allow the use of 4-volt European rectifiers is to use inexpensive adapters as I am doing.
 
http://www.ebay.com/itm/191955967286