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Inspire by Dennis Had Enjoying Vacuum Tube Audio

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  #6211  
Old 01-08-2021, 04:32 PM
Analog Addict Analog Addict is offline
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Originally Posted by FloridaBoy View Post
AA the OP is a tube Noob and, IMHO, it may be better to return the gear while he can.
Which is why I offered him detailed instructions. The choice is his.
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  #6212  
Old 01-08-2021, 08:09 PM
AMammal AMammal is offline
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Originally Posted by Analog Addict View Post
I agree with bearcity, although it may help to post a full sized image of the pre amp to flickr in order to be able to fully examine the innards. The amp looks unmolested and I don't see any obvious component failure. Without a tester, here's what I would do with the rectifiers. Obviously, make sure both the pieces have been powered off and let sit for awhile, because you don't want any nasty surprises. Make sure they are unplugged before starting in.

1) Tighten the rectifier socket. This is the white ceramic socket with 4 triangular shaped contacts. I vastly prefer digging up old Amphenol 4 pin sockets for my purposes, but Dennis can't source these and regularly gives me $hit for my old recycled sockets. That being said, IMO the old sockets are made of superior materials and better constructed. Anyway, use a fine needle nose plier and gently squeeze the triangular shaped pin sockets from the underside. They should move closer together and grip the pins better. You should definitely notice a better grip on the tube.

2) Clean the contact surfaces. This can either be done with deoxit sprayed on the pins on one of the tubes and then the tube gently slid in and out of the socket in order to remove any potential oxidation. Another more decisive method of cleaning is to take a small round jewelers file and gently abrade the inside contact surfaces of the pin connectors.

3) Rather than have you test B+ voltages, I would grab pieces of your SS gear and test the pieces individually. Retube the pieces, and hook a SS amp up to the pre amp and listen. Hook a SS preamp up to the amp and listen. Any difference? Switch the rectifiers between the two pieces and listen again. Finally if everything sounds good, hook both Inspire pieces back together again and listen.

See what you come up with....
Hallelujah! The amps are back to their true form! All it took was tightening the sockets on the rectifier tubes. Thank you so much for the suggestions. The sound is fantastic. I have gotten goosebumps writing on my laptop in the kitchen passively listening while the system is playing. Not to mention the emotional impact my wife and I had when we hooked them up for the first time after the sockets were tightened. As my wife put it, "The soul is back!". We listened all day to them. We're definitely keeping the amps as the presentation, separation, resonance and warmth is definitely as good as all the posts say.

This forum has been so helpful to us as a new to tubes family. We look forward to enjoying every step through this hobby, tweaking, adding, and learning.

Now we're just going to enjoy listening to them for a bit, then I'm sure the rolling and tweaking the system will begin.


Quote:
Originally Posted by FloridaBoy View Post
AA the OP is a tube Noob and, IMHO, it may be better to return the gear while he can.
This thought was STRONGLY swimming around inside of me. However, my inability to process living without knowing what the amps are supposed to sound like overcame my fear of tightening the rectifier sockets. (After much internal deliberation, I decided gently squeezing some contacts with needle nose pliers is within my skill-set)

We wish everyone here the best, I'm going to get back to reading through the whole thread.. page 129 here I come!

A big personal thank you to Masterlu for allowing me to seek the expertise of the forum members here and come to a fantastic outcome. Also, to Analog Addict, Bearcity, and Florida Boy for your input and advice. It was all taken into careful consideration, and your assistance led to a wonderful outcome. We are so excited to join the high praise for what Mr. Had has been doing during his "leisure" years!

Hope you all have a wonderful day!

Last edited by AMammal; 01-08-2021 at 08:12 PM.
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  #6213  
Old 01-09-2021, 12:22 AM
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Masterlu Masterlu is online now
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Outstanding!
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MX136, MC1.2KW(10) MC2KW(2), MCD1100, MS750(2) MVP881, C1000C/P/T, MPC1500, HT-2 SUBS(2) HT3F(2) WS350(2) XRT2K, XCS2K, XR27(2) XCS350(2) JL GOTHAM v2 SUBS(2) SILENZIO MUSIC SERVER, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" MOTORIZED SCREEN, CINEMA-TECH SEATING, WW PLATINUM CABLES
Reference System: ACCUPHASE A250 AMPS, C3850 PRE-AMP, DP950 CD/SACD TRANSPORT, DC950 DIGITAL PROCESSOR, DG-58 DIGITAL EQUALIZER, T1200 FM STEREO TUNER, PS1230 POWER SUPPLY, HRS-SXR CUSTOM RACK w/ M3X SHELVES, TAD REFERENCE ONE MK2 LOUDSPEAKERS, WW PLATINUM CABLES
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MX150, MC501(2) MC1.2KW(10) MC2301(2) MR88, MVP881, MCD1100, MDA1000, C1000C/P/T, MPC1500, ESOTERIC K-01X 30th ANNIVERSARY (BLACK) SACD/CD PLAYER, G02-X CLOCK, HT3F(2) XRT2K, XCS2K, XR27(2) JL GOTHAM SUBS(2) JL FATHOM F113v2 SUBS(4) SOUND ANCHOR STANDS(2) KALEIDESCAPE STRATO & TERRA SERVERS 80-TB, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" SCREEN, SONUS FABER STRADIVARI, SILENZIO MUSIC SERVER, FORTRESS SEATING, WW PLATINUM CABLES
Analog Rig: CLEARAUDIO INNOVATION WOOD, UNIVERSAL ARM w/ Da VINCI' CART, 2nd UNIVERSAL ARM w/ GOLDFINGER STATEMENT CART, HRS-MXR REFERENCE RACK-GLOSS BLACK w/ M3X SHELVES, AESTHETIX RHEA SIG PHONO-PRE, WW PLATINUM CABLES
Reference System: BURMESTER 911MK3 AMP(3), 088 PRE-AMP, 089 CD PLAYER, 100 PHONO PRE-AMP, 948 POWER CONDITIONER, ACCUPHASE DG-68 VOICING EQUALIZER, AVID ACUTUS REFERENCE SP TT, GRAHAM PHANTOM II SUPREME ARM, BENZ MICRO LP-S CART, GRANDIOSO P1/D1 STACK, G1 RUBIDIUM MASTER CLOCK, N05 NETWORK PLAYER, SILENZIO MUSIC SERVER, HRS-SXR CUSTOM RACK w/ M3X SHELVES, SONUS FABER AIDA SPEAKERS, JL FATHOM F113v2 SUBS(2) SOUND ANCHOR STANDS(2) WW PLATINUM CABLES

Library System: GRANDIOSO M1 MONOBLOCK AMPS, C1 LINESTAGE PRE-AMP, K1X CD/SACD PLAYER, G1 MASTER RUBIDIUM CLOCK, E02 PHONO-PRE, SILENZIO MUSIC SERVER, AERIAL ACOUSTICS 20T V2, AERIAL SW12 SUBS(2), CANTON REF K1s, VPI HRX TT w/ SDS POWER SUPPLY, ORTOFON CADENZA BLACK CART, KLAUDIO RCM, SHUNYATA DENALI 6000/S v2, SHUNYATA OMEGA QRs, WW PLATINUM CABLES
Esoteric/Bryston System: ESOTERIC C02-X PRE-AMP, P-02X TRANSPORT, D02-X DAC, G02-X CLOCK, BRYSTON 28B3 CUBED MONOBLOCK AMPS, SHUNYATA DENALI 6000/S v2(2) AMR-DP777-SE DAC, SILENZIO MUSIC SERVER, TAD REFERENCE ONE MK2 LOUDSPEAKERS, QUADRASPIRE RACK, WW PLATINUM CABLES
Accuphase/Canton System: ACCUPHASE E800 INTEGRATED, DP570 CD/SACD PLAYER, T1200 FM STEREO TUNER, DG-68 VOICING EQUALIZER, PS530 POWER SUPPLY, CANTON REF K3s, CANTON REF K5s, SILENZIO MUSIC SERVER, HRS MXR REFERENCE MAHOGHANY RACK w/ M3X2 SHELVES, WW GOLD CABLES
Bryston Active System: BP26 PRE-AMP, MPS2 POWER SUPPLY, BAX-1 CROSSOVER, BDA-3 DAC, BDP-3 PLAYER, BCD-3 CD PLAYER, BIT15(2), MODEL T ACTIVE SPEAKERS, 21B3 CUBED AMPS, SILENZIO MUSIC SERVER, TARGET RACK, WW SILVER CABLES
Vintage System
: LUXMAN CL-38u SE PRE-AMP, JBL L300 SPEAKERS, BRYSTON BDA-3 DAC, BCD-3 CD PLAYER, BIT15, 3B3 CUBED AMP, SILENZIO MUSIC SERVER, WW SILVER CABLES

Shunyata Power/Digital cables, HRS Damping Plates, Stillpoints throughout all systems
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  #6214  
Old 01-09-2021, 10:37 AM
FloridaBoy FloridaBoy is offline
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Originally Posted by Analog Addict View Post
Which is why I offered him detailed instructions. The choice is his.
Well...he's no longer a Toob Noob.
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  #6215  
Old 01-09-2021, 11:58 AM
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Originally Posted by AMammal View Post
Hallelujah! The amps are back to their true form! All it took was tightening the sockets on the rectifier tubes. Thank you so much for the suggestions. The sound is fantastic. I have gotten goosebumps writing on my laptop in the kitchen passively listening while the system is playing. Not to mention the emotional impact my wife and I had when we hooked them up for the first time after the sockets were tightened. As my wife put it, "The soul is back!". We listened all day to them. We're definitely keeping the amps as the presentation, separation, resonance and warmth is definitely as good as all the posts say.

This forum has been so helpful to us as a new to tubes family. We look forward to enjoying every step through this hobby, tweaking, adding, and learning.

Now we're just going to enjoy listening to them for a bit, then I'm sure the rolling and tweaking the system will begin.




This thought was STRONGLY swimming around inside of me. However, my inability to process living without knowing what the amps are supposed to sound like overcame my fear of tightening the rectifier sockets. (After much internal deliberation, I decided gently squeezing some contacts with needle nose pliers is within my skill-set)

We wish everyone here the best, I'm going to get back to reading through the whole thread.. page 129 here I come!

A big personal thank you to Masterlu for allowing me to seek the expertise of the forum members here and come to a fantastic outcome. Also, to Analog Addict, Bearcity, and Florida Boy for your input and advice. It was all taken into careful consideration, and your assistance led to a wonderful outcome. We are so excited to join the high praise for what Mr. Had has been doing during his "leisure" years!

Hope you all have a wonderful day!
Congrats! Now you know what the fuss is all about.

One last thing I forgot to mention. Tubes have certain idiosyncratic properties, including needing added attention to areas not seen in SS gear. For example, in SS gear the issues with proper contact are for the most part mitigated by a 60/40 mix of tin and lead. But, in your journey to toob proficiency, keep this in mind....

Most all metals suffer from oxidation. Any surfaces that rely on metal to metal contact for transmission of electrons can develop oxide coatings of some sort, including rust. If you want to have the best transmission of electrons, keep your metal surfaces in good contact, which is a combination of clean metal and amount of surface contact. You have increased your surface contact by tightening the sockets. Make sure you clean these surfaces as well. (see prev. post)

The new Chinese sockets in that amp haven't really been around long enough to develop any significant oxide, but if you're running old stock 80 tubes, they will most certainly have developed oxides on the pins.

So here's what you do. Take your 80 tubes and a small piece of extra fine steel wool. Gently clean all the pins to remove any oxides. Deoxit spray will facilitate this process. Do this with any old tubes you decide to use in these amps to minimize contact problems.
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  #6216  
Old 01-09-2021, 12:37 PM
AMammal AMammal is offline
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Quote:
Originally Posted by Analog Addict View Post
Congrats! Now you know what the fuss is all about.

One last thing I forgot to mention. Tubes have certain idiosyncratic properties, including needing added attention to areas not seen in SS gear. For example, in SS gear the issues with proper contact are for the most part mitigated by a 60/40 mix of tin and lead. But, in your journey to toob proficiency, keep this in mind....

Most all metals suffer from oxidation. Any surfaces that rely on metal to metal contact for transmission of electrons can develop oxide coatings of some sort, including rust. If you want to have the best transmission of electrons, keep your metal surfaces in good contact, which is a combination of clean metal and amount of surface contact. You have increased your surface contact by tightening the sockets. Make sure you clean these surfaces as well. (see prev. post)

The new Chinese sockets in that amp haven't really been around long enough to develop any significant oxide, but if you're running old stock 80 tubes, they will most certainly have developed oxides on the pins.

So here's what you do. Take your 80 tubes and a small piece of extra fine steel wool. Gently clean all the pins to remove any oxides. Deoxit spray will facilitate this process. Do this with any old tubes you decide to use in these amps to minimize contact problems.
Definitely going to be cleaning the contacts. I appreciate the advice. I have a can of contact cleaner but did not have it handy yesterday. I do have some foundational electronic knowledge, but this tube thing isn't something I ever expected to get into... Fortunately, the wife was all about tubes, so here I am!
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  #6217  
Old 01-13-2021, 06:50 AM
FloridaBoy FloridaBoy is offline
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Quote:
Originally Posted by AMammal View Post
Definitely going to be cleaning the contacts. I appreciate the advice. I have a can of contact cleaner but did not have it handy yesterday. I do have some foundational electronic knowledge, but this tube thing isn't something I ever expected to get into... Fortunately, the wife was all about tubes, so here I am!
Here is a link to a tubes book:

http://ken-gilbert.com/images/pdf/taste_of_tubes.pdf
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  #6218  
Old 01-13-2021, 10:50 AM
AMammal AMammal is offline
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Originally Posted by FloridaBoy View Post
Uh. THANK YOU! This is exactly what I was looking for and will be devoured quickly. Checking out his website as well. Thanks for pointing me down the road!

Cheers!
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  #6219  
Old 01-14-2021, 01:00 PM
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booangler booangler is offline
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Question New owner of an Inspire Amp

Good morning all,

I just recently purchased a used Fire-Bottle SE HO. I love it by the way. The previous owner indicates that in 2018 this unit was sent in to Dennis for a PS Upgrade. As the new owner I have some questions:
  1. How can I confirm the PS Upgrade?
  2. Where can I get a list of matching requirements?
  3. What driver tubes can I use?
  4. Does this amp support the use of 6F6 and KT-150?

I guess what I am looking for is a tube rolling chart for the amp.

Thanks in advance.

Alan
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  #6220  
Old 01-14-2021, 02:14 PM
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Masterlu Masterlu is online now
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Alan... Welcome to AA!

And, for your Support!

__________________
Ivan
FLORIDA
MX136, MC1.2KW(10) MC2KW(2), MCD1100, MS750(2) MVP881, C1000C/P/T, MPC1500, HT-2 SUBS(2) HT3F(2) WS350(2) XRT2K, XCS2K, XR27(2) XCS350(2) JL GOTHAM v2 SUBS(2) SILENZIO MUSIC SERVER, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" MOTORIZED SCREEN, CINEMA-TECH SEATING, WW PLATINUM CABLES
Reference System: ACCUPHASE A250 AMPS, C3850 PRE-AMP, DP950 CD/SACD TRANSPORT, DC950 DIGITAL PROCESSOR, DG-58 DIGITAL EQUALIZER, T1200 FM STEREO TUNER, PS1230 POWER SUPPLY, HRS-SXR CUSTOM RACK w/ M3X SHELVES, TAD REFERENCE ONE MK2 LOUDSPEAKERS, WW PLATINUM CABLES
CAPE COD

MX150, MC501(2) MC1.2KW(10) MC2301(2) MR88, MVP881, MCD1100, MDA1000, C1000C/P/T, MPC1500, ESOTERIC K-01X 30th ANNIVERSARY (BLACK) SACD/CD PLAYER, G02-X CLOCK, HT3F(2) XRT2K, XCS2K, XR27(2) JL GOTHAM SUBS(2) JL FATHOM F113v2 SUBS(4) SOUND ANCHOR STANDS(2) KALEIDESCAPE STRATO & TERRA SERVERS 80-TB, LUMAGEN RADIANCE SCALER, SONY VPH-G90U 4K PROJECTOR, STEWART 120" SCREEN, SONUS FABER STRADIVARI, SILENZIO MUSIC SERVER, FORTRESS SEATING, WW PLATINUM CABLES
Analog Rig: CLEARAUDIO INNOVATION WOOD, UNIVERSAL ARM w/ Da VINCI' CART, 2nd UNIVERSAL ARM w/ GOLDFINGER STATEMENT CART, HRS-MXR REFERENCE RACK-GLOSS BLACK w/ M3X SHELVES, AESTHETIX RHEA SIG PHONO-PRE, WW PLATINUM CABLES
Reference System: BURMESTER 911MK3 AMP(3), 088 PRE-AMP, 089 CD PLAYER, 100 PHONO PRE-AMP, 948 POWER CONDITIONER, ACCUPHASE DG-68 VOICING EQUALIZER, AVID ACUTUS REFERENCE SP TT, GRAHAM PHANTOM II SUPREME ARM, BENZ MICRO LP-S CART, GRANDIOSO P1/D1 STACK, G1 RUBIDIUM MASTER CLOCK, N05 NETWORK PLAYER, SILENZIO MUSIC SERVER, HRS-SXR CUSTOM RACK w/ M3X SHELVES, SONUS FABER AIDA SPEAKERS, JL FATHOM F113v2 SUBS(2) SOUND ANCHOR STANDS(2) WW PLATINUM CABLES

Library System: GRANDIOSO M1 MONOBLOCK AMPS, C1 LINESTAGE PRE-AMP, K1X CD/SACD PLAYER, G1 MASTER RUBIDIUM CLOCK, E02 PHONO-PRE, SILENZIO MUSIC SERVER, AERIAL ACOUSTICS 20T V2, AERIAL SW12 SUBS(2), CANTON REF K1s, VPI HRX TT w/ SDS POWER SUPPLY, ORTOFON CADENZA BLACK CART, KLAUDIO RCM, SHUNYATA DENALI 6000/S v2, SHUNYATA OMEGA QRs, WW PLATINUM CABLES
Esoteric/Bryston System: ESOTERIC C02-X PRE-AMP, P-02X TRANSPORT, D02-X DAC, G02-X CLOCK, BRYSTON 28B3 CUBED MONOBLOCK AMPS, SHUNYATA DENALI 6000/S v2(2) AMR-DP777-SE DAC, SILENZIO MUSIC SERVER, TAD REFERENCE ONE MK2 LOUDSPEAKERS, QUADRASPIRE RACK, WW PLATINUM CABLES
Accuphase/Canton System: ACCUPHASE E800 INTEGRATED, DP570 CD/SACD PLAYER, T1200 FM STEREO TUNER, DG-68 VOICING EQUALIZER, PS530 POWER SUPPLY, CANTON REF K3s, CANTON REF K5s, SILENZIO MUSIC SERVER, HRS MXR REFERENCE MAHOGHANY RACK w/ M3X2 SHELVES, WW GOLD CABLES
Bryston Active System: BP26 PRE-AMP, MPS2 POWER SUPPLY, BAX-1 CROSSOVER, BDA-3 DAC, BDP-3 PLAYER, BCD-3 CD PLAYER, BIT15(2), MODEL T ACTIVE SPEAKERS, 21B3 CUBED AMPS, SILENZIO MUSIC SERVER, TARGET RACK, WW SILVER CABLES
Vintage System
: LUXMAN CL-38u SE PRE-AMP, JBL L300 SPEAKERS, BRYSTON BDA-3 DAC, BCD-3 CD PLAYER, BIT15, 3B3 CUBED AMP, SILENZIO MUSIC SERVER, WW SILVER CABLES

Shunyata Power/Digital cables, HRS Damping Plates, Stillpoints throughout all systems
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