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| New handmade DAC CS8416-WM8742-E88CC with volume control |
2014年9月11日 星期四
2014年8月18日 星期一
G.I.P. 勵磁式號角喇叭
G.I.P Laboratory 是以復刻WE西電-勵磁式號角喇叭的公司，是在日本 YL Acoustics 復刻WE西電勵磁式號角喇叭之後才開始。全部單體的磁鐵都是勵磁式設計，也就是需要額外供應電源才能產生磁力的勵磁喇叭，號角另接。
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| 8吋全音域喇叭原是以復刻WE755A(鈷磁Alnico)為樣本 ，另補高音GIP-597A。 |
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| G.I.P Laboratory 三音路設計，高音單體原廠編號是GIP-597A Model 2，它是以W. E.經典的597A高音單體為樣本復刻而成。中音則是GIP-D5015A (原WE594)，前方擁有開口頗大的號角， 低音單體則是GIP-W4601A，深埋在箱體裡面，以woofer horn 設計是所謂低音號角。箱體採用美松夾板製成，兩側金屬方形外殼是額外供應電源才能產生磁力的勵磁式喇叭電源，採定電壓定電流源設計。 |
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| 這是分音器，金屬方形外殼的是電容，是油質電容，兩側木板(線軸)中是復刻古時的電感，無電阻。全部以搭棚製作，紅色線材是WE的布線。 |
2014年7月20日 星期日
Friend's DAC and XMOS dongle.
Friend's DAC and XMOS dongle.
XMOS dongle convert USB to RCA spdif signal.
2014年5月6日 星期二
2014年3月17日 星期一
Plasma tweeter , plasma mid diy
GE211/Plasma tweeter /Plasma mid co-work movie
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| Plasma tweeter RF amplifier 6jm6 |
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| Plasma mid RF amplifier PL519 |
2014年1月26日 星期日
Diy Amplifier E88CC + 6JM6
Amplifier case high 9.5cm .
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| Top view. |
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| Tube window close view. |
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| Front View. |
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| Rear view. |
2014年1月19日 星期日
Diy Amplifier 6C45Pi + 6JM6
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| Diy SE Amplifier 6C45Pi + 6JM6 High voltage 470V, screen 190 |
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| Cap couple , OPT 1.75K : 8 ohm |
2013年11月24日 星期日
2013年9月2日 星期一
Mid Plasma 555 and Plasma tweeter speakers working together
Mid Plasma 555 and Plasma tweeter speakers working together.
Mid Plasma 555 speaker.
Turn on the light.
2013年6月8日 星期六
Mission impossible ---- Plasma Mid (Plasma 555) 離子中音 ...2
Ike Quebec
Heavy Soul [RVG Edition]
08 Nature boy
Below 3 YouTube files ..........No Plasma Tweeter play (離子高音...未開).
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| sound w Leslie (Jensen V21 mid driver and Rotated hron) https://kao211.blogspot.com/2024/03/fix-mid-horn-driver-noise-by-clean.html |
Ike Quebec
Heavy Soul [RVG Edition]
08 Nature boy
Plasma 555 Play only!
Ike Quebec
Heavy Soul [RVG Edition]
08 Nature boy
Plasma 555 will be Plasma Mid of 2.1 channel! .....After Plasma tweeter of 2.1 channel!
中音路- 離子中音 .....繼中音路- 離子高音之後 new design.
2013-06-08 My audio diy diary.
Ike Quebec
Heavy Soul [RVG Edition]
08 Nature boy
Jensen 302+Altec 288+Tad1601 playing .....One channel only.
Plsama 555 black out.
2013-06-08 My audio diy diary.
2013年5月18日 星期六
2013年4月25日 星期四
貫古通今的聲音---喇吧
Listen to Historic Speakers - from 1924 to 1944 - Part 1
Listen to Historic Speakers - from 1924 to 1944 - Part 2
Listen to Historic Speakers - from 1924 to 1944 - Part 2
2013年4月22日 星期一
Mission impossible ------- Plasma Mid (Plasma 555) 離子中音
不可能完成的任務................. Plasma 555 離子中音
Ike Quebec
Heavy Soul [RVG Edition]
Plasma 555 playing only (driver VT4C-211), no Tweeter no Woofer.
250hz~4khz.
Ike Quebec
Heavy Soul [RVG Edition]
05 The Man I Love
2013年4月19日 星期五
讓西電 L9 的恐怖低音更恐怖.....哪裡掉的哪裡找回來
woofer spec. real Imp. black line
模擬後smith chart 30hz close .實數組抗
Woofer low pass x-over simulation
mark 30hz close speaker Fs.
有沒發現喇叭內的 coil 10Hz~1kHz的連續阻抗線上黑色與另woofer分音線路下紅色線剛好相反mirror.
加起來也就阻抗是共軛matching......醬發現人家30hz 凸很高.......我們也能凸很高.
這就是建議的 .......哪裡掉的哪裡找回來.......否則別的暴力方法是容易多個香爐多個鬼.
mark 30hz close speaker Fs.
有沒發現喇叭內的 coil 10Hz~1kHz的連續阻抗線上黑色與另woofer分音線路下紅色線剛好相反mirror.
加起來也就阻抗是共軛matching......醬發現人家30hz 凸很高.......我們也能凸很高.
這就是建議的 .......哪裡掉的哪裡找回來.......否則別的暴力方法是容易多個香爐多個鬼.
模擬後smith chart 30hz close .實數組抗
2013年4月18日 星期四
有錢沒錢, 買個WE (西電)好過年-----西電 L9 的恐怖低音
有錢沒錢, 買個WE (西電)好過年-----西電 L9 的恐怖低音
1948 Western Electric L9 loudspeakers
Authentic 1948 Western Electric L9 loudspeakers in action at 2010 High End Show in Munich,
Germany. The music in the video is from Friedrich Gulda's LP "As You Like It",
on BASF (courtesy of Mr. Joe Roberts and Frank Schroder ).
連鋼琴踏板都很大聲.
Play Friedrich Gulda's LP "As You Like It"
以上有CD.....台灣沒賣
但可買 .....
Jazz Club - Swinging Jazz Piano 搖擺琴聲
01.Billy Taylor - La Petite Mambo
02. Tete Montoliu - Speak Low
03. Monty Alexander - Blue Alexander
04. Friedrich Gulda - Blues For H.G.
05. Milt Buckner - Glady's Dance
06. Francy Boland - Dark Eyes
07. Earl Hines - Second Balcony Jump
08. Oscar Peterson - Lulu's Back In Town
09. Eddie Thompson - How Could You Do A Thing Like That To Me
10. Eugen Cicero - Hello Dolly
11. George Shearing - Love Walked In
12. Paul Kuhn & Horst Jankowski - Honeysuckle Rose
13. Hank Jones - The Oregon Grinder
14. Red Garland - Daahoud
15. Hampton Hawes - I'm All Smiles
只是鋼琴踏板很小聲, 低音規模還是很恐怖.
Authentic 1948 Western Electric L9 loudspeakers in action at 2010 High End Show in Munich,
Germany. The music in the video is from Friedrich Gulda's LP "As You Like It",
on BASF (courtesy of Mr. Joe Roberts and Frank Schroder ).
連鋼琴踏板都很大聲.
Play Friedrich Gulda's LP "As You Like It"
以上有CD.....台灣沒賣
但可買 .....
Jazz Club - Swinging Jazz Piano 搖擺琴聲
01.Billy Taylor - La Petite Mambo
02. Tete Montoliu - Speak Low
03. Monty Alexander - Blue Alexander
04. Friedrich Gulda - Blues For H.G.
05. Milt Buckner - Glady's Dance
06. Francy Boland - Dark Eyes
07. Earl Hines - Second Balcony Jump
08. Oscar Peterson - Lulu's Back In Town
09. Eddie Thompson - How Could You Do A Thing Like That To Me
10. Eugen Cicero - Hello Dolly
11. George Shearing - Love Walked In
12. Paul Kuhn & Horst Jankowski - Honeysuckle Rose
13. Hank Jones - The Oregon Grinder
14. Red Garland - Daahoud
15. Hampton Hawes - I'm All Smiles
只是鋼琴踏板很小聲, 低音規模還是很恐怖.
2013年4月17日 星期三
Magic modify of converting cheap PP EL34 Amp's to 300B SE
Magic modify of converting cheap PP EL34 Amp's to 300B SE
------after all is dr. Klimo 300B circuit (OPT with Degauss coil inside )
Below detail just usage one pole of P-P (push-pull)OPT coil to do Degauss coil function.
hyper-link ....
http://www.audioasylum.com/cgi/t.mpl?f=tubediy&m=76018
Document...
I have now invested some time into this lark and a few things become clear.
If a typhical EL34 PP Amp is used with one EL34 as pure "Ballast" you can add your 300B on the other side.
The Impedance loading the 300B becomes 1/4 of the A-A impedance of the EL34 OPT. Typhically this will give between 1K - 1K5 nominalimpedance.
If we declare the 4 Ohm tap to be 8 Ohm and the 8 Ohm tap to be 16 Ohm we are fine(ish). If you need a < 8 Ohm output impedance you are nearly out of luck if your amp does not have 2 ohm Taps (few cheap chinese EL34 PP Amp's do). BUT, you can use a trick and connect your < 8R Speaker between the 4R & 8R Tap. This will give a tap with a very low nominal impedance, which would limit available power a little (which might explain thge rated 5W for the Beltaine).
BTW, I got a copy of the readers letter to CHF with the Beltaine schematic . Some interesting tricks. The EF184 driver pentode gets it's screen voltage from the 300B Cathode, 300B has LCL filtered DC heater. The EL34 uses an unbypassed cathode R and is indeed merely "ballast", balancing DC. The rest of the circuit is very traditional, EF184 drives 300B in classical Pentode driver, Triode output self biased circuitry .
So, converting any "surplus to requirements" cheap EL34 PP Amp to 300B SE in Klimo Beltaine style should be easy enough.
This is based on re-cycling a Dared Tube VP-80 which prooved way to unreliable for the guy who bought it.... Looks nice though:
Heaters for the 300B's will DC (probably LT1085-5 Reg) from the 6.3V Output Heaters and shared with the EL34 which will run AC.
The 6SN7's stage on AC, lifted to around 70V (in other words EL34 Cathode.
Some ideas are filched from Klimo (Screengrid/cascode upper grid bias, NFB switchable), some are mine.
To improve the way the DC magnetisation cancellation in the OPT tracks varying 300B's and to reduce differences between various EL34's the EL34 "Ballast" valve gets the Cathode voltage of the 300B as Gridvoltage, the cathode Resistor is suitably increased.
The Frontend uses a 6SN7 cascode to approximate a pentode, you can of course use a real pentode. The idea for me is to use only stuff I have "around" and good octal Pentodes are non too common in my stash.
The PSU substitues a Mosfet"Voltage Follower" for a choke, smaller (size is a premium).
Anyway, this should make an interesting little amp, gor for the usual WE Standard 7 - 7.5W....
In document we know Dared Tube main land China VP-80 clone already.
Principle ...
Old SE 300B connect high voltage on OPT coil cause Hysteresis curve floating up (磁滯曲線飄起來) to O2 point.
Audio AC signal trasfer on the Hysteresis curve then cause Audio AC signal floating up too.
Meantime audio AC signal Loss signal sensivity and linearity (just partial saturation).
Here dr. Klimo 300B usage Degauss coil to pull back Hysteresis curve as below.
Driving Degauss Tube as EL34 in circuit (as red line function).
If use Mosfet to replace EL34 then your need big heat sink(because always have DC current cross over Mosfet's D & S pole ).
Dr. Klimo is a really master.
Sense of hearing
Old Tube amplifier always have good man-vocal but woofer and tweeter seem is less a point .
But Dr. Klimo circuit have something different just opposite.
The issue is cause tube ampifier RIAA play-bake curve have a drastic changes.
------after all is dr. Klimo 300B circuit (OPT with Degauss coil inside )
Below detail just usage one pole of P-P (push-pull)OPT coil to do Degauss coil function.
hyper-link ....
http://www.audioasylum.com/cgi/t.mpl?f=tubediy&m=76018
Document...
I have now invested some time into this lark and a few things become clear.
If a typhical EL34 PP Amp is used with one EL34 as pure "Ballast" you can add your 300B on the other side.
The Impedance loading the 300B becomes 1/4 of the A-A impedance of the EL34 OPT. Typhically this will give between 1K - 1K5 nominalimpedance.
If we declare the 4 Ohm tap to be 8 Ohm and the 8 Ohm tap to be 16 Ohm we are fine(ish). If you need a < 8 Ohm output impedance you are nearly out of luck if your amp does not have 2 ohm Taps (few cheap chinese EL34 PP Amp's do). BUT, you can use a trick and connect your < 8R Speaker between the 4R & 8R Tap. This will give a tap with a very low nominal impedance, which would limit available power a little (which might explain thge rated 5W for the Beltaine).
BTW, I got a copy of the readers letter to CHF with the Beltaine schematic . Some interesting tricks. The EF184 driver pentode gets it's screen voltage from the 300B Cathode, 300B has LCL filtered DC heater. The EL34 uses an unbypassed cathode R and is indeed merely "ballast", balancing DC. The rest of the circuit is very traditional, EF184 drives 300B in classical Pentode driver, Triode output self biased circuitry .
So, converting any "surplus to requirements" cheap EL34 PP Amp to 300B SE in Klimo Beltaine style should be easy enough.
This is based on re-cycling a Dared Tube VP-80 which prooved way to unreliable for the guy who bought it.... Looks nice though:
Heaters for the 300B's will DC (probably LT1085-5 Reg) from the 6.3V Output Heaters and shared with the EL34 which will run AC.
The 6SN7's stage on AC, lifted to around 70V (in other words EL34 Cathode.
Some ideas are filched from Klimo (Screengrid/cascode upper grid bias, NFB switchable), some are mine.
To improve the way the DC magnetisation cancellation in the OPT tracks varying 300B's and to reduce differences between various EL34's the EL34 "Ballast" valve gets the Cathode voltage of the 300B as Gridvoltage, the cathode Resistor is suitably increased.
The Frontend uses a 6SN7 cascode to approximate a pentode, you can of course use a real pentode. The idea for me is to use only stuff I have "around" and good octal Pentodes are non too common in my stash.
The PSU substitues a Mosfet"Voltage Follower" for a choke, smaller (size is a premium).
Anyway, this should make an interesting little amp, gor for the usual WE Standard 7 - 7.5W....
In document we know Dared Tube main land China VP-80 clone already.
Principle ...
Old SE 300B connect high voltage on OPT coil cause Hysteresis curve floating up (磁滯曲線飄起來) to O2 point.
Audio AC signal trasfer on the Hysteresis curve then cause Audio AC signal floating up too.
Meantime audio AC signal Loss signal sensivity and linearity (just partial saturation).
Here dr. Klimo 300B usage Degauss coil to pull back Hysteresis curve as below.
Driving Degauss Tube as EL34 in circuit (as red line function).
If use Mosfet to replace EL34 then your need big heat sink(because always have DC current cross over Mosfet's D & S pole ).
Dr. Klimo is a really master.
Sense of hearing
Old Tube amplifier always have good man-vocal but woofer and tweeter seem is less a point .
But Dr. Klimo circuit have something different just opposite.
The issue is cause tube ampifier RIAA play-bake curve have a drastic changes.
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