There is a saying in Spanish that says: mejor curarse en salud / better healing in health -> 84 dB
Pro-Audio and lighting Calculators. Calculator page
An externally hosted image should be here but it was not working when we last tested it.
With 3m -> 90.5 dB
With 4m -> 88 dB
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Just now, this new mono recording, 24/96 vinyl rip.
Wes Montgomery – In Paris: The Definitive ORTF Recording
Wes Montgomery - In Paris: The Definitive ORTF Recording (Vinyl, LP, Album) at Discogs
foobar2000 1.4 beta 7 / Dynamic Range Meter 1.1.1
log date: 2018-03-12 18:29:09
--------------------------------------------------------------------------------
Analyzed: Wes Montgomery / In Paris: The Definitive ORTF Recording
--------------------------------------------------------------------------------
DR Peak RMS Duration Track
--------------------------------------------------------------------------------
DR11 -0.87 dB -14.74 dB 6:24 01-Four On Six
DR12 -1.65 dB -16.59 dB 9:59 02-Impressions
DR14 -0.48 dB -18.00 dB 6:40 03-The Girl Next Door
DR13 -0.29 dB -15.52 dB 8:25 04-Here's That Rainy Day
DR11 -0.32 dB -14.94 dB 12:26 05-Jingles
DR10 -2.82 dB -15.29 dB 11:00 06-To Wane
DR11 -0.77 dB -14.78 dB 10:35 07-Full House
DR13 -1.62 dB -18.02 dB 9:16 08-'Round Midnight
DR12 -0.63 dB -16.54 dB 13:15 09-Blue 'N Boogie / West Coast Blues
DR10 -1.64 dB -14.54 dB 13:38 10-Twisted Blues
--------------------------------------------------------------------------------
Number of tracks: 10
Official DR value: DR12
Samplerate: 96000 Hz
Channels: 2
Bits per sample: 24
Bitrate: 3020 kbps
Codec: FLAC
================================================
CD edition:
[Customer reviews] Amazon.com: Customer reviews: In Paris: The Definitive ORTF Recording [2 CD]
Wes Montgomery – In Paris: The Definitive ORTF Recording
Wes Montgomery - In Paris: The Definitive ORTF Recording (Vinyl, LP, Album) at Discogs
foobar2000 1.4 beta 7 / Dynamic Range Meter 1.1.1
log date: 2018-03-12 18:29:09
--------------------------------------------------------------------------------
Analyzed: Wes Montgomery / In Paris: The Definitive ORTF Recording
--------------------------------------------------------------------------------
DR Peak RMS Duration Track
--------------------------------------------------------------------------------
DR11 -0.87 dB -14.74 dB 6:24 01-Four On Six
DR12 -1.65 dB -16.59 dB 9:59 02-Impressions
DR14 -0.48 dB -18.00 dB 6:40 03-The Girl Next Door
DR13 -0.29 dB -15.52 dB 8:25 04-Here's That Rainy Day
DR11 -0.32 dB -14.94 dB 12:26 05-Jingles
DR10 -2.82 dB -15.29 dB 11:00 06-To Wane
DR11 -0.77 dB -14.78 dB 10:35 07-Full House
DR13 -1.62 dB -18.02 dB 9:16 08-'Round Midnight
DR12 -0.63 dB -16.54 dB 13:15 09-Blue 'N Boogie / West Coast Blues
DR10 -1.64 dB -14.54 dB 13:38 10-Twisted Blues
--------------------------------------------------------------------------------
Number of tracks: 10
Official DR value: DR12
Samplerate: 96000 Hz
Channels: 2
Bits per sample: 24
Bitrate: 3020 kbps
Codec: FLAC
================================================
CD edition:
[Customer reviews] Amazon.com: Customer reviews: In Paris: The Definitive ORTF Recording [2 CD]
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I was able to sneak in a little time over the last few days to get my heatsinks drilled and tapped, mount the boards, mosfets and start wiring the amp up to measure and first sounds.
Almost done, hopefully I can wrap it up in the next few days. If all goes well at that point, I'll start working on the final chassis....
X, et all:
Is there a post or two that discusses what voltages I should see and where, etc.?
Should I short the inputs when I check for output off set?
Thanks!
Gable
edit - Forgot the pics!
Almost done, hopefully I can wrap it up in the next few days. If all goes well at that point, I'll start working on the final chassis....
X, et all:
Is there a post or two that discusses what voltages I should see and where, etc.?
Should I short the inputs when I check for output off set?
Thanks!
Gable
edit - Forgot the pics!
Attachments
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I think it's the newest version of the Q100. I was considering buying a pair for my office, but they're a bit more than I want to spend.
I've heard a pair of the Q100's and really liked them.
It is the cheaper KEF Q100.
When it went on sale it was a sales failure. I guess for two reasons:
* The coaxial speaker suspension is very rigid -> it lacks bass in the first hours -> sounds very bad. They need very long burned. Compulsive buyers had to return them quickly
* It need watts, more than the amplifiers with what they recommended.
In addition, having the front bass-reflex placement is much less problematic. I have reduced the diameter with a little funky paper (hidden from view by the grid).
With my cheap modifications the sound is much better than the original.
It costed me €398, shipping included. Now you can get them for $299 on Amazon.com
Each coxial speaker (without the box) costed more than $130. They stopped selling them without verifying that they were to be repaired because some started to build their own boxes and filters with them.
Here I have explained my modifications in some posts:
KEF LS50
*********** ***********
Wes Montgomery - In Paris: The Definitive ORTF Recording - Resonance Records
When it went on sale it was a sales failure. I guess for two reasons:
* The coaxial speaker suspension is very rigid -> it lacks bass in the first hours -> sounds very bad. They need very long burned. Compulsive buyers had to return them quickly
* It need watts, more than the amplifiers with what they recommended.
In addition, having the front bass-reflex placement is much less problematic. I have reduced the diameter with a little funky paper (hidden from view by the grid).
With my cheap modifications the sound is much better than the original.
It costed me €398, shipping included. Now you can get them for $299 on Amazon.com
Each coxial speaker (without the box) costed more than $130. They stopped selling them without verifying that they were to be repaired because some started to build their own boxes and filters with them.
Here I have explained my modifications in some posts:
KEF LS50
*********** ***********
Wes Montgomery - In Paris: The Definitive ORTF Recording - Resonance Records
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Hi all, have powered up both channels, one at a time, and I am not quite sure of the offset results. Connected to a temporary supply with 25V rails with 22000uf on each rail. Current approx 1.7A.
With shorted input to ground, meter on mV DC, no loudspeaker connected the meter dances continually between approx -25mV to +25mV.
Removing the short on the input and with DVM set to AC volts the output shows approx 26V when the input is touched with fingers and shows 0mV when finger removed, so it is certainly amplifying.
Adjusting the pot for offset appears to make no difference. Should I have a load connected to check offset? Both channels behave the same.
Regards
Alan
With shorted input to ground, meter on mV DC, no loudspeaker connected the meter dances continually between approx -25mV to +25mV.
Removing the short on the input and with DVM set to AC volts the output shows approx 26V when the input is touched with fingers and shows 0mV when finger removed, so it is certainly amplifying.
Adjusting the pot for offset appears to make no difference. Should I have a load connected to check offset? Both channels behave the same.
Regards
Alan
Beautiful open frame design Pcgab! Very tidy and organized cables.
Just look at DC voltage through R131 when you flip the switch. Should be about 0.61vdc within 2 seconds. If >1v kill power and debug. You can short audio input or simply not connect it and I got same answer. About 0mV to 2mV hot or cold or anywhere in between. It was as they say, “brain dead simple.”
0.61v over 0.47ohms is 1.3amps. Interestingly, with 0.33R it was almost the same voltage.
Of course, test one channel at a time. Verify correct polarity. +ve on right side with audio input on top.
Just look at DC voltage through R131 when you flip the switch. Should be about 0.61vdc within 2 seconds. If >1v kill power and debug. You can short audio input or simply not connect it and I got same answer. About 0mV to 2mV hot or cold or anywhere in between. It was as they say, “brain dead simple.”
0.61v over 0.47ohms is 1.3amps. Interestingly, with 0.33R it was almost the same voltage.
Of course, test one channel at a time. Verify correct polarity. +ve on right side with audio input on top.
It should not dance around with or without load. What is AC volt reading at output with input grounded?
If DC offset is 25mV and no AC from oscillation, connect a test speaker and check for sound. What is Vdc across R131? What is Vac across R131 and R132?
Off topic
A marvellous work (1956, mono) in SACD very well made:
Ella Fitzgerald - Sings The Cole Porter Song Book (SACD) at Discogs
Amazon.com: Customer reviews: Ella Fitzgerald Sings The Cole Porter Song Book [2 SACD]
foobar2000 1.4 beta 7 / Dynamic Range Meter 1.1.1
log date: 2018-03-12 20:32:40
--------------------------------------------------------------------------------
Analyzed: Ella Fitzgerald / The Cole Porter Songbook
--------------------------------------------------------------------------------
DR Peak RMS Duration Track
--------------------------------------------------------------------------------
DR12 -4.82 dB -19.55 dB 3:19 01-All Through The Night
DR13 -4.06 dB -19.64 dB 3:23 02-Anything Goes
DR12 -7.41 dB -23.87 dB 3:03 03-Miss Otis Regrets (She's Unable To Lunch Today)
DR13 -3.96 dB -19.31 dB 3:50 04-Too Darn Hot
DR11 -5.34 dB -20.30 dB 2:42 05-In The Still Of The Night
DR13 -5.69 dB -21.53 dB 4:02 06-I Get A Kick Out Of You
DR11 -6.19 dB -20.10 dB 3:52 07-Do I Love You?
DR12 -3.95 dB -20.29 dB 2:49 08-Always True To You In My Fashion
DR14 -6.23 dB -23.57 dB 3:34 09-Let's Do It
DR13 -5.01 dB -20.24 dB 3:34 10-Just One Of Those Things
DR12 -6.41 dB -20.86 dB 3:34 11-Ev'ry Time We Say Goodbye
DR12 -6.19 dB -20.61 dB 1:44 12-All Of You
DR13 -3.97 dB -19.91 dB 3:39 13-Begin The Beguine
DR12 -6.17 dB -22.78 dB 3:25 14-Get Out Of Town
DR11 -6.63 dB -19.55 dB 4:08 15-I Am In Love
DR13 -4.42 dB -20.03 dB 3:20 16-From This Moment On
DR11 -7.11 dB -20.74 dB 4:58 17-I Love Paris
DR12 -6.56 dB -21.26 dB 2:23 18-You Do Something To Me
DR14 -3.34 dB -19.63 dB 3:23 19-Ridin' High
DR11 -9.60 dB -24.18 dB 3:26 20-Easy To Love
DR12 -5.01 dB -19.38 dB 3:11 21-It's All Right With Me
DR11 -4.97 dB -20.48 dB 5:06 22-Why Can't You Behave?
DR12 -4.65 dB -19.48 dB 2:06 23-What Is This Thing Called Love?
DR12 -5.63 dB -20.98 dB 3:34 24-You're The Top
DR12 -6.97 dB -22.52 dB 5:53 25-Love For Sale
DR11 -6.16 dB -20.39 dB 2:46 26-It's DeLovely
DR12 -5.13 dB -19.61 dB 3:06 27-Night And Day
DR12 -4.16 dB -19.25 dB 2:00 28-Ace In The Hole
DR10 -4.63 dB -18.61 dB 3:52 29-So In Love
DR14 -3.19 dB -20.57 dB 2:43 30-I've Got You Under My Skin
DR10 -7.16 dB -19.70 dB 3:14 31-I Concentrate On You
DR13 -5.02 dB -20.40 dB 3:22 32-Don't Fence Me In
--------------------------------------------------------------------------------
Number of tracks: 32
Official DR value: DR12
A marvellous work (1956, mono) in SACD very well made:
Ella Fitzgerald - Sings The Cole Porter Song Book (SACD) at Discogs
Amazon.com: Customer reviews: Ella Fitzgerald Sings The Cole Porter Song Book [2 SACD]
foobar2000 1.4 beta 7 / Dynamic Range Meter 1.1.1
log date: 2018-03-12 20:32:40
--------------------------------------------------------------------------------
Analyzed: Ella Fitzgerald / The Cole Porter Songbook
--------------------------------------------------------------------------------
DR Peak RMS Duration Track
--------------------------------------------------------------------------------
DR12 -4.82 dB -19.55 dB 3:19 01-All Through The Night
DR13 -4.06 dB -19.64 dB 3:23 02-Anything Goes
DR12 -7.41 dB -23.87 dB 3:03 03-Miss Otis Regrets (She's Unable To Lunch Today)
DR13 -3.96 dB -19.31 dB 3:50 04-Too Darn Hot
DR11 -5.34 dB -20.30 dB 2:42 05-In The Still Of The Night
DR13 -5.69 dB -21.53 dB 4:02 06-I Get A Kick Out Of You
DR11 -6.19 dB -20.10 dB 3:52 07-Do I Love You?
DR12 -3.95 dB -20.29 dB 2:49 08-Always True To You In My Fashion
DR14 -6.23 dB -23.57 dB 3:34 09-Let's Do It
DR13 -5.01 dB -20.24 dB 3:34 10-Just One Of Those Things
DR12 -6.41 dB -20.86 dB 3:34 11-Ev'ry Time We Say Goodbye
DR12 -6.19 dB -20.61 dB 1:44 12-All Of You
DR13 -3.97 dB -19.91 dB 3:39 13-Begin The Beguine
DR12 -6.17 dB -22.78 dB 3:25 14-Get Out Of Town
DR11 -6.63 dB -19.55 dB 4:08 15-I Am In Love
DR13 -4.42 dB -20.03 dB 3:20 16-From This Moment On
DR11 -7.11 dB -20.74 dB 4:58 17-I Love Paris
DR12 -6.56 dB -21.26 dB 2:23 18-You Do Something To Me
DR14 -3.34 dB -19.63 dB 3:23 19-Ridin' High
DR11 -9.60 dB -24.18 dB 3:26 20-Easy To Love
DR12 -5.01 dB -19.38 dB 3:11 21-It's All Right With Me
DR11 -4.97 dB -20.48 dB 5:06 22-Why Can't You Behave?
DR12 -4.65 dB -19.48 dB 2:06 23-What Is This Thing Called Love?
DR12 -5.63 dB -20.98 dB 3:34 24-You're The Top
DR12 -6.97 dB -22.52 dB 5:53 25-Love For Sale
DR11 -6.16 dB -20.39 dB 2:46 26-It's DeLovely
DR12 -5.13 dB -19.61 dB 3:06 27-Night And Day
DR12 -4.16 dB -19.25 dB 2:00 28-Ace In The Hole
DR10 -4.63 dB -18.61 dB 3:52 29-So In Love
DR14 -3.19 dB -20.57 dB 2:43 30-I've Got You Under My Skin
DR10 -7.16 dB -19.70 dB 3:14 31-I Concentrate On You
DR13 -5.02 dB -20.40 dB 3:22 32-Don't Fence Me In
--------------------------------------------------------------------------------
Number of tracks: 32
Official DR value: DR12
ISO. With foobar2000, J River Media Center 23 64 bits...
I only listen very good records. Always I search EMOTION.
Very few SACD are well made, specially with modern/popular music. Japanese SACD with all Rolling Stones or Credence Clearwater Revival sound better than vinyl.
SACD has glorious sound with new live records in DSD, without PCM edition in the studio. LIVE. How many SACD? Very very few.
The digital many times are 16/44 -> 24/96 and the sound is much worse than the very good vinyl rip. A fraud. Instead of working with the analog/digital master they do it directly from the CD.
At the end it is always the same: the quick benefit comes before the product quality, the work well done.
I only listen very good records. Always I search EMOTION.
Very few SACD are well made, specially with modern/popular music. Japanese SACD with all Rolling Stones or Credence Clearwater Revival sound better than vinyl.
SACD has glorious sound with new live records in DSD, without PCM edition in the studio. LIVE. How many SACD? Very very few.
The digital many times are 16/44 -> 24/96 and the sound is much worse than the very good vinyl rip. A fraud. Instead of working with the analog/digital master they do it directly from the CD.
At the end it is always the same: the quick benefit comes before the product quality, the work well done.
My heart/ear wants the ALPHA but my brain say me it is not a good idea. It took me a few years to get the current sound despite the incredible very noisy electrical network that I suffer in home. And in the air too, with "tons" or RF/EMI.
With a class AB ALPHA with the same harmonic profile I did not doubt for a second. H2 predominance (with SS, no tubes) is my choice without any doubt. With very good and clean PSU off course. Pinocchio and I agree on its importance (very clean PSU).
With a class AB ALPHA with the same harmonic profile I did not doubt for a second. H2 predominance (with SS, no tubes) is my choice without any doubt. With very good and clean PSU off course. Pinocchio and I agree on its importance (very clean PSU).
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Measured one channel at a time, across R131 (0.33r MRA5). Each channel measured 0.177v.
Inputs are not connected, outputs are, didn't measure offset as yet.
~Gable
Sorry to hear that. At least it wasn’t the other way around and puff of magic smoke was avoided. What is voltage at gate of p channel MOSFET relative to Drain or -ve rail (pin 2)?
Is your R108 at 47ohms per schematic and not 470ohms per error on BOM?
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