wire nuts
only an experienced and confident builder would trust his recycled treasure parts to wire nuts vs that pesky solder business
are those Jennifer Crock cryo-treated 6-9's silver connectors?
Seriously - I think we've all got a few projects under our belts that don't look this good under the skirt.
only an experienced and confident builder would trust his recycled treasure parts to wire nuts vs that pesky solder business
are those Jennifer Crock cryo-treated 6-9's silver connectors?
Seriously - I think we've all got a few projects under our belts that don't look this good under the skirt.
I like the hot glue gun work to hold down the wire. I'm always amazed at how nice some builders finish there gear.
rick
rick
Can anyone tell me what the output impedance / damping factor is for the RH84? Similar to a SET?
Thanks,
Kyle
Thanks,
Kyle
Kyle,
I don't know what the output impedance is but this thing has bass, unlike your typical whimpy SET.
It also does not suffer from that "all music sounds super smooth like a smoky jazz club" kind of washiness that the typical SET also suffers from😉
Build it and let us know what you think.
bohhwwwhahahahahahah.
Andrew
I don't know what the output impedance is but this thing has bass, unlike your typical whimpy SET.
It also does not suffer from that "all music sounds super smooth like a smoky jazz club" kind of washiness that the typical SET also suffers from😉
Build it and let us know what you think.
bohhwwwhahahahahahah.
Andrew
Mine Frugal-phile(tm) RH-84 is sitting sown in the car -- going to get it and hook it up to the tannoys (one with fresh tweeter also in the car)
dave
Heya Dave,
sounds like a killer setup in the car 😀
You should try it out in the house, its really a great amp, I've never heard Tannoys but heard much great stuff about them.
Andrew
sounds like a killer setup in the car 😀
You should try it out in the house, its really a great amp, I've never heard Tannoys but heard much great stuff about them.
Andrew
no AC doesn't play very loud... and the cable running up to the other speaker in the house restricts mobility.
I've always wanted to listen to tannoys, so when i was offered a pair fairly cheap....
It is all hooked up and playing in the main system now... when i get my USB DAC this upcoming week, i'm going to try it directly into the RH84. BB iMac->RH84 -> Tannoy D50s.
Despite being rated at 92 dB, my 1st impression is that the 90 dB Fostex horns were more efficient.
dave
Andrew
LOL
I look forward to hearing your thoughts on the RH84 when you get your dac. I am now working on a RH807.
Is the Tannoy a multiway speaker and how does it sound?
Will you be using the BB as a music server?
I got a "new" G5 1.8GHZ from Hurricane Ivan, just needed to replace the PS and its been going since, good thing as my Flat Panel imac needs a logic bd and I was hoping to use the imac as a music server. One step forward, one step back, at least its not 2 steps back.
A mini mac would probably make a great music server, add a flat panel and a rodent, remotely administer it. Oops ! wrong forum, this should be about audio
😀
LOL
I look forward to hearing your thoughts on the RH84 when you get your dac. I am now working on a RH807.
Is the Tannoy a multiway speaker and how does it sound?
Will you be using the BB as a music server?
I got a "new" G5 1.8GHZ from Hurricane Ivan, just needed to replace the PS and its been going since, good thing as my Flat Panel imac needs a logic bd and I was hoping to use the imac as a music server. One step forward, one step back, at least its not 2 steps back.
A mini mac would probably make a great music server, add a flat panel and a rodent, remotely administer it. Oops ! wrong forum, this should be about audio
😀
8" dual concentric. I'm reserving judgement on them for awhile.
Yes. Total cost so far $83 CAD.
Digital source -- that's audio 🙂
dave
Here is the best EL34 circuit, 8 watts in triode mode and sounds great. Will even drive your inefficient speakers.
http://www.lundahl.se/claus_b_se.html
http://www.lundahl.se/claus_b_se.html
Another design for El84 Amp
Im still working my way throgh this monster thead, but
here is my design for an EL84 Amp
http://www.solderingpoint.com/projects/6bq5compact/6bq5compact.php
It has channel separated stabilized Mosfet Supply, no noise or hum is detectable and i think it sounds excellent.
I have made a PCB layout for it, so it can be built easily.
regards
MV
Im still working my way throgh this monster thead, but
here is my design for an EL84 Amp
http://www.solderingpoint.com/projects/6bq5compact/6bq5compact.php
It has channel separated stabilized Mosfet Supply, no noise or hum is detectable and i think it sounds excellent.
I have made a PCB layout for it, so it can be built easily.
regards
MV
Hi !
i have a question and thought i should use this old thread as this one had the most discussion on the RH84SE design by Mr. Kitic.
Now I'm building this design as being my very first amp,
but unfortunatly I only have a pair of 10K OPT's, instead of the 5K OPT's recommended.
Is there a problem in using these ?
Cheers,
empee
i have a question and thought i should use this old thread as this one had the most discussion on the RH84SE design by Mr. Kitic.
Now I'm building this design as being my very first amp,
but unfortunatly I only have a pair of 10K OPT's, instead of the 5K OPT's recommended.
Is there a problem in using these ?
Cheers,
empee
The plate curves of a pentode with approximately 10% local feedback (as per the RH84) look remarkably like those of a triode.
With a 10k opt you will therefore lose quite a lot of available power, however I imagine the amp will sound ok.
pm
With a 10k opt you will therefore lose quite a lot of available power, however I imagine the amp will sound ok.
pm
A lot of the german OPTs i've salvaged are 10k and they work fine from a sonics POV.
The ones that are in the RH84 variation i'm listening to now are 8K to 4 ohms. I'm using them with 8 ohm speakers so they are really 16k OPTs and i'm happy with how they sound (these same amps -- parafeed with trioded EF86 driver tubes), held their ground against a buddies set of AudioNote Conquerors).
dave
The ones that are in the RH84 variation i'm listening to now are 8K to 4 ohms. I'm using them with 8 ohm speakers so they are really 16k OPTs and i'm happy with how they sound (these same amps -- parafeed with trioded EF86 driver tubes), held their ground against a buddies set of AudioNote Conquerors).
dave
That has also been my experience + subjective power loss (volume setting) is much lower than calculations make you believe.
Simon
THE BEST CIRCUIT?
Dear all,
Alex is back... at least for now. And, I could not stop myself from reacting to the "best circuit". Since when? And why? And according to whom?
Now that I am not bound to dial-up services any more, I might just read the rest of the thread before offending anyone or offending my own intelligence.
But,
whenever someone says "this is the best", I am almost certain that it is far from the truth.
This circuit is, as far as I have seen it, a common pentode in ultra-linear mode... so, what's new or best? The drivers asset? The power supply? The charisma of the author?
I am certain that it does not outperform any similar EL34 design! What about originality?
Regards to all,
Alex
Dear all,
Alex is back... at least for now. And, I could not stop myself from reacting to the "best circuit". Since when? And why? And according to whom?
Now that I am not bound to dial-up services any more, I might just read the rest of the thread before offending anyone or offending my own intelligence.
But,
whenever someone says "this is the best", I am almost certain that it is far from the truth.
This circuit is, as far as I have seen it, a common pentode in ultra-linear mode... so, what's new or best? The drivers asset? The power supply? The charisma of the author?
I am certain that it does not outperform any similar EL34 design! What about originality?
Regards to all,
Alex
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