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SRPP RIAA Pre-Amplifier 日本語-Japanesehere
This Pre Amplifier for RIAA was built up early 1994 and restration of
Pre-Amplifier on Sep 2009 starting.this pre was consist with 7 valves,tone control and
RIAA , Pre-amplifier.REC OUT.improve only a parts of RIAA.I like SRPP RIAA sound
with CR Network and 4 valves of SRPP.
T1 determind 6.8K and 0.047uF,56K and 0.0047uF.
T2 is determind with 6.8K, 0.047uF and T3 is calculated by realation T1 and T2.
T1 is 3.18mS ,T2 is 0.318mS and T3 is 0.075mS from RIAA Spec.please see RIAA Site
for more information of RIAA value.
RIAA OrgRIAA INformationplease see.
depend on how to caluculate , different value indicated by designer.
I have very nice sound from these RC network values.almost american old Jazz tested good.
Tested : ECM /Keith Jarrett Stella by Starlight,Milestone Records/Red Alert Red Garland
Miles Davis"Round About MidNight"/CBS more are very natural.
Classic: Just tell you, just played Pablo Casals and Rudolf Serkin recorded on 1953
Beethoven Sonata for Cello & Piano.disc is very old one but remaster recorded on
1984 by CBS. I felt "they are playing a front of my eyes".very good sound and natural.
just few components are used but sound very good.old Jazz LP's played so nice.
It can be made with parts that are sold at local electric parts shops.
It is very simple. I think that it is good to express it as a sound like good and very bright CD.
It is a sound like a new style DAC. The only drawback is easy to pick up external noise. It is easy to pick up the ON / OFF noise of electric products in the household.
This RIAA with EL34 Single Ended Amplifier on 18th Feb 2019
replaced CR Net work value on 23rd Feb 2019
Only RIAA SRPP design on 2 Sep 1994
free Movie Site -----Vexmovies
LCR RIAA DIY using LCR any one can do with very few failures
new circuit SRPP RIAA
Aside from that, I think you can understand that RIAA using this coil has good sound and few failures. If you are interested, we recommend you make your own
RIAA SRPP inside
Pre SRPP MC/MM Amplifier only schematic
RIAA SRPP Pre Amplifier for MC/MM
Only RIAA SRPP design on 2 Sep 1994
schematic diagram for RIAA using only LCR component
Highly successful LCR RIAA DIY that anyone can build up LCR RIAA
LCR RIAA with bass boost
passive tone and line input. 24 step atteneuter .only can use MM. any one can build up this RIAA pre-Amplifier if you can get LCR network.
sound is quite good. I think.As you can see in the music video uploaded to youtube,
I think you can confirm that it is out. Although it is a hum jar, if RIAA is located on the left side of SL1200, hum will be generated when the volume is full from the right channel,
so when using SL1200, be sure not to place a preamp(RIAA) on the left side.
Aside from that, I think you can understand that RIAA using this coil has good sound and few failures. If you are interested, we recommend you make your own. As you can see in the music video uploaded to youtube,
I think you can confirm that it is out. FRQH FRQL is the name of the part. These can be purchased at General Trance / Sales. We also sell fine-metted chalk.
As a final result, the level may be insufficient due to the small gain, but it can be avoided by examining the constants of the final circuit or using a higher vacuum tube. Line input is fine, but if you can do it,
I think good results will come out. This coil is not necessarily used, but if you have a tester that measures inductance, you can make this coil yourself.
FEQH 45mH chork coil and FEQL chork Coil
LCR network and ripple filter added 1st Sep 2019
sound is a little bit small may be
replaced driver for more output voltge Perque SRPP drive
RIAA LCR DIY by You tube
Circuit diagram of Quad 22 with well-established sound
Since 3rd Sep 2009 in Sakura Chiba Japan lastest update 26th June 2021
Single Ended Amplifier D.I.Y
How to build up Amplifier Single Ended Amplifier 2003-2019