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Little Sweetie Forum amplifier project


henry4841

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I'm a little embarrassed to admit I don't know. I sure hope so. We have not been in touch lately. He has been good to me in my continuing audio education, built Sweetie, and offered much appreciated moral support while my ex and I were / are splitting up. He did mention in one of what I believe to be his most recent posts wrapping up the documentation of the Little Sweetie build that he felt it was time for him to fade into the sunset (or something to that effect). Although this forum has been our primary method of communication and I have been away from the forum for some time I certainly would have responded if I had received notification of some message from my friend directed at me and I'm reasonably sure I have received no such notification. So...

HEY MAN !!  YOU OUT THERE ?  

 

Thanks,

geo

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On 9/13/2022 at 2:00 AM, henry4841 said:

After posting the original introduction Maynard presented of this amplifier I do not know much more I can add about the great sound of this design. Good place for me to fade into the sunset. The place for anyone building a Sweetie to post your build and results though. Not much I can say that Maynard did not say in the above post for me to say more. I will be posting results of my new build, the Premium Sweetie on another thread. See everyone there. 

This is the quote I referred to in response to the "Anyone know if Henry4841 is alive and well?" question posted  7-2-24: "Good place for me to fade into the sunset." I took it to mean with regard to the Little Sweetie Build-not anything existential. 

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  • 1 month later...
22 hours ago, imeiamme said:

@henry4841 is Good? Good!

 

Hello @Maynard. Are there any EL-34 Mono blocks available? Just asking.


Not from me!  At present, I’m retired from doing any amp design work. There are custom amp builders around who can design and build anything you want.  You may want to try posting on DIY Audio.  
 

Maynard

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Really, I’m seeking affordable SET EL-34 Tubes on a reliable mono block chasis. 8 ohms is more than enough. Without any heavy new designing. I ask are you out completely?

 

say the word. I’ll send you a copy of the CD for the album. But, note the vinyl does the compression thing I’m looking for. 
 

im really looking to do something ultra-unordinary. I could use your know-how @tube fanatic.

i too am kinda retired almost 28 years now. Just asking.

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8 hours ago, imeiamme said:

I’m seeking affordable SET EL-34 Tubes on a reliable mono block chassis. 8 ohms is more than enough.

 

Can you explain this?

What does 8 ohms is more than enough mean?

Why the extra expense of mono amps for a simple single ended design?

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I’m learning. Recently, It was suggested to find SET EL-34 tubes. I did a search finding units at 8 - 10 Watt systems capable at 8 Ohms. The Heresy I is 8 Ohms. 
 

happy to modify any confusing statements. I’ll clarify as best I can.

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44 minutes ago, imeiamme said:

8 Watts. Not ohms. In my defense. I was a Machinist Mate in the Navy. 🙈🙊🙉

 

Probably only going to get around 5 watts out of an EL34 single ended in strapped triode. Of course the watt number can be higher at much higher distortion. 

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1 hour ago, imeiamme said:

8 Watts. Not ohms. In my defense. I was a Machinist Mate in the Navy. 🙈🙊🙉


Room size, distance from speakers when listening, distance between the speakers,  type of music you listen to, and listening level will determine how much power you need.  As with other speakers, the impedance of the Heresy varies with frequency and is not much of an issues for a SET. 
 

Maynard

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@opnly bafld & @tube fanatic yeah, the 8 Ohms before. I skied that one. 
 

Room size - a movie theater 120 occupancy. Plus elevation seating arrangement. Music is one vinyl record. DM me your address. I’ll get a CD sent or PERFECT INFINITY: Big City.


Bob Crites Crossovers installed.  So, there needs to be more that EL-34’s? 
 

I understand this can get involved. @tube fanatic Hey, I understand you are retired. If you get me close. I’ll adjust the volume knob. 

-Also

im talking to Peter near Boston. He has a Single Chorus Speaker for sale. Unsure, If I can Acquire repair and present in time. Has a tweeter horn issue.  It chasis has a 4 ohms output. Quieter speaker there yes? Does that reduce overall for two front speakers? 
 

movie theater House Speakers cannot produce the sound sought. Not like Heresy’s can and PRO AUDIO hasn’t responded to my inquiry yet.

 

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option #2


Almost easier to go sideways. From middle of theater to opposite wall. Stagger and place in seating arrangement 

vice. Loading on a stage 20 feet from nearest seat. Sure there is elevation. But loose power to deliver to back of room. 25 rows. Speaker in row 4 left side. Other speaker in row 20 right side. 
 

I’ll need to run the HERESY I’s inverted (Upside down).  Bass on top. 
 

or option #3

 

both speakers on row 20 right and left.

 

with a cabinet with just Heritage horns from the stage (supported at low end cutoff) the House Speaker with their 5.1 sub system. An out can plug in if need be. 
 

Just thinking out loud.


 

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You should consider hiring a professional theater audio technician to do an analysis of your needs.  In my opinion, for a venue of that size, you would need a pair of Klipschorns or Jubilees!  And, even with those, you will need far more power than a little SET can provide.  
 

Maynard
 

 

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I absolutely agree, my backup backup is micing the Heresy speakers. 
never knew there was any such thing as a professional theater audio technician. Working towards that goal of hiring someone like that.
 

I’d like to get to two other continents by end of next year. But, I suspect that a pre-amplifier + EL-34 amp at 8-10 Watts will work if mic’d (low end) to house speakers for the rough raw…get it to work version. Of right now.
 

I’ll need to duplicate my Vinyl. Abbey Roads Studio (UK) slow mixes vinyl reproduction. There are only 5 Test Press vinyl. I possess only one, maybe two. Can maybe get my hands on a third. 
I’ll need to duplicate speakers or obtain Klipschorns or Jubilees. I’m all for it. 
I spoke to Alpha Audio in Belgium. Shortest message:  0 interest. All 5 stores. 
 

This is a Rinse and Repeat concept. Any State, any theater, any continent. Prior to open and Midnight off-schedule shows. Not in competition with Blockbuster Releases. 

Edited by imeiamme
Test press vinyl destroyed 6.4 version
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Just came across this item. My belief is that KLIPSCH also has amplification units.. I don’t believe that they have that for guitars necessarily has amp head. But in this case, I don’t think there is too much KLIPSCH couldn’t do TO MAKE SOMETHING LIKE THIS IN 25 TO 50 WATT RANGE. MONO BLOCK STYLE. 
 

not just saying if KLIPSCH can do something like this. FOR ME, I WOULD WANT AN ADDITIONAL CABINET FOR SURROUND SOUND OUT, ADJUSTED HORN SPEAKERS THEMSELVES, AND THE DRIVERS

 

Some of you all have talked about running damp on speakers I get that? I asked something before about the parallax about how it loads up the horn driver? Or in the case of the parallax  two amplifier, it affected the loudspeaker.. Parallax 

 

So anyhow, maybe there needs to be more than one amplifier. Maybe there needs to be more than one type of bulb or tube. 
 

I’m sending messages out to the professional theater audio technicians to get a sea of what’s out there. Looking to get some responses back.. But definitely working on getting the right equipment. 
@opnly bafld is right some of the five white units are not going to be strong enough. 50 maybe too high.. It seems like what the upgrade of speaker the actual wattage may need to come down. @tube fanatic believes there might need to be jubilee Or forte. 
 

by the way, I owe big thanks too @Philip McDonald.
 

 

 

IMG_0754.jpeg

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