jb Latest Test Report of JFX Premium Polyprolene Film Capacitors

We would like to share the latest test report of jb JFX Premium Polyprolene Film Capacitors to 
you. Welcome to try our capacitors and let us know your thinking.

Reporter: Mr. Lee. Riccio from United Kingdom, a member of the Pinkfish forum (Leeoh) 
Project: Upgrading a CD players Rotel RCD955AX.
Samples: jb JFX 4.7µF 250V +/-3% Bulk RoHS, 2 pieces
Datasheet:http://www.jbcapacitors.com/Plastic-Film-Capacitors/JFX-Premium-Metallized-Polypropylene-Film-Capacitors-Axial.html

Below is the Original letter from Mr. Lee. Riccio
Hello Iris, 
This is just a short letter to say thank you for the capacitors which arrived safely and my feedback having now installed the JFX Premium Polyprolene film capacitors in my Rotel RCD 955AX CD player as part of a series of upgrades to the player. 
Here they are installed in my CD player. They replaced two Blackgate F series electrolytic’s. 

Bigger than the Blackgate originals, but very easy to fit as legs were same diameter as Blackgate’s so they fitted through the pcb holes with absolutely no problems.



Aesthetically they look really nice and match very well with the remaining Op Amp decoupling Blackgates. 

Mods performed to my Rotel CD player:
Replace all power supply capacitors with Panasonic FC. 
Replaced all Transport, Filter, Decoder, DAC capacitors with Panasonic FC. 
Replaced all DAC Decoupling capacitors with Wima MKS series. 
Replaced Op Amps for HiFi audio grade from Texas Instruments. 
Isolated Filter chip and gave it its own independent regulated +5V power supply. 
Performed Filter Non Oversampling Modification. 
Replaced final audio output DC decoupling Blackgate F series capacitors for JFX Premium. 

How does it sound ?
I am very happy with the improvements bought with all the mods I made. So happy in fact I removed my Naim CD5i II CD player from my system which sounds considerably less good now and am keeping the Rotel in its place instead ! 
After then installing your JFX Premium capacitors the sound has opened up a little more and vocals seem to have slightly more but very clean treble. The noise floor is very low, which gives way to a very wide dynamic range probably why it seems the treble has increased slightly. 
Whilst is still early days, each time I play a CD the sound does seem to be improving with time, not huge differences, just more of the same clearer, wider, more dynamic. If the capacitor could be made a little warmer sounding would be ideal for CD replay. 
After nearly 2 weeks running of our JFX capacitors, I am pleased with the performance of the capacitors and have since we last communicated installed a very low jitter clock with its own dedicated power supply to replace the simple crystal clock in the CD player. 
This bought an immediate noticeable warmth and smoothness to the sound. So looks like your capacitors were always warm and rich sounding but the CD Player as standard wasn't allowing them to perform at their best !

Overall I am very happy with the quality of your product, service and delivery and have no hesitation in recommending to anyone seeking a sensibly priced, but high quality alternative to the usual well known, but in comparison can be very expensive American and European audiophile capacitor brands ! 

Kind Regards. 
Lee.

Some Feedback from jb Customer about JFX Capacitors and X2 Capacitors JFV

Hi Lilian, Our last amplifier was very well received and JB played a big role in this result. We tested several capacitors and chose to use the JFX in 2 parts of the amplifier (220nF and 330nF) and the X2 capacitorsin the grounding section. We are delighted with the quality of them all. 

I send you some photos of our lastest amp during a demonstration last August.

jb April Special Offer---High End Audio Capacitors Make Your Life Full of Beautiful Music!

Are you ready to use jb High end audio capacitors in your equipments? You will find the excellent sound effect!

Free samples are available for all of you...come on...we are waiting for your any inquiries!

JFX- Premium Metallized polypropylene film capacitors, Axial type--Black color

JSX- Superior Metallized polypropylene film capacitors, Axial type--White color

Capacitance: 1000pF ~400uF

Voltage: 250VDC ~630VDC

Tolerance: +/-5%, +/-3%, +/-1%

jb JFX and JSX Audio Capacitors are Non Polarised Type

Sometimes, customer will be confused by the so-called "outer foil" or the "inner foil"of our audio capacitors.
Today we would like to tell you more about this point. I am sure you will understand by below customers explanation.

" I have all my JFX caps soldered in at the moment, but plan to try some Jensen caps in place o them, so i will try to do the test as well. 
With a sensitive millivolt AC meter i think you could see the difference just by connecting it one way and touching the cap. 

The induced mains hum will be higher when the outermost foil is connected to the anode of the meter(maybe).

I think more and more that this is an example of "audiophile", which means that people searcing for better and better sound, and not always exactly knowing the technical aspects of it, they will assume one way is better because another cap manufacturer said so.

I feel that the JFX is a solid performer in either direction used(after all it is a bipolar cap as you stated), and i feel that the price/performance ratio is excellent."

jb Sales Promotion Before Christmas Holiday

Hello, dear VIP customer, 

How are you? We bring a very good news.  As Christmas holiday is coming, to let new & old customer win more profits, for good & long order list, we do special offer some discount.

Are you prepare for new order list now? Please contact us at once, let's cost down for you. :))

Our very strong series as below: 
JFG - Axial Metallized Polyester & Polypropylene Film Capacitors
JFZ - X2 Metallized Polypropylene Film Capacitor (310VAC) Top seller item 
JFXJSX- Axial Audio Metallized Polypropylene Film Capacitors
JRAJRB- Leaded Radial Aluminum Electrolytic Capacitors 2000H at 85°C/ 105°C  Top seller item 
SMD Aluminum Electrolytic Capacitor (85°C/ 105°C)
JFS - Motor capacitors CBB60~CBB65

Wish you Merry Christmas & Happy new year in advance! 

From jb Capacitors Company sales department

For more products information please check: http://www.jbcapacitors.com/

jb Testimonial of JFX Premium and JSX Superior MKP Audio Cap

In the search of a affordable audio capacitors for decoupling purpose, I have got the JFX and JSX series from jb Capacitors. Now I will explain how they are compared with a a few others of similar size range.

Tested capacitors:
JSX: 2.2uF/250V
JFX: 2.2uF/400V
Mundorf Mcap 2.2uF/250V
Mundorf EVO 2.2uF/450V
Clarity Cao PX 2.2uF/250V

To have similar requirements I have a relay switch board next to my  pre-amp direct out from DAC. All DC coupled and no other capacitors in this way. DAC output impedance is 47Ohm, Pre-amp impedance is 470kOhm. These are very common values and should be give a good start point for comparisons. I can switch direct from capacitor to capacitor and DC coupled.

Mesurements are all very good. most below my measuring equipment. The tolerances where all below the printed 5%(JFX) and 3%(JSX). I have measured 1.36% and 0.99%.
The dielectric dissipation factor has been tan:<0.001 at 1kHz.

Listening test:
JSX: Clear, detailed, wide and open up presentation
JFX:  Detailed, gives a realistic soundstage and stress free listening. very natural and a good tonal balance. My favourite for acoustic instruments and voices.

Mcap:
Clear with more midrange. Makes sound a bit hard and grained.

EVO:  
Detailed and holographic presentation, seems to be a bit louder, but tonal balance is not perfect. After longer listening I feel like disrupted soundstage. 

Clarity Cap PX:
Musical and warm, but less detailed.

After burning in with 24hrs:
JFX: well balanced with more 3 dimensional stage, warm finish
JSX: clean and clear with rich details, but flatter sound stage
Overall both types are very high quality and for sure a good choice for a competitive price.

Summary:
jb Capacitors has surprised me with excellent capacitors. They are not expensive, small sized and good sounding. They beat most of even more expensive capacitors. Well done!

Best regards
Alex
Dial-Audio

More information please check below link:
http://www.jbcapacitors.com/Plastic-Film-Capacitors/JFX-Premium-Metallized-Polypropylene-Film-Capacitors-Axial.html
http://www.jbcapacitors.com/Plastic-Film-Capacitors/JSX-Superior-Metallized-Polypropylene-Film-Capacitors-Axial.html


jb Capacitors Company Most Strong Series Film Capacitors

1. JFX &JSX - Premium & Superior metallized polypropylene film capacitors--Axial type(cross capacitors) 
Mainly used in  Audio equipement, cross overs; our MOQ is low, prices unbeatable, very excellent replacements of Mundorf, Jantzen audio , solen,ERSE etc.. 

2. JFA - Mylar Polyester Film capacitor(CL11) --- Mainly used in Energy saving lamps, demand is huge, cost is low.

3. JFB - Metallized Polyester film capacitor(CL21)--dipped type  --- cross to Vishay MKT 368, Epcos B32591~B32594, mainly used in power supplies, electronics ballasts etc..our prices & lead time are very good.

4. JFD - Metallized Polyester Film capacitors(CL23)--Box type  ---Cross to Arcotronics R60, Epcos B32520~32524, European customers prefer it, as it is box type, nicer..

5. JFG - Axial metallized polyeter & polypropylene film capcitor(CL20&CBB20) -- Cross to Arcotronics(Kemet) MKT A50, MKP A70 ,  Vishay MKT1813, MKP1839, 1845, jb capacitors prices are unbeatable.

6. JFP - High voltage Metallized Polypropylene film capacitors (CBB81), -- mainly used in electronics ballast, cross to Epcos B32692, prices and lead time unbetable, quality is very reliable.

7. JFV&JFZ - X2 Metallized polypropylene film capcaitors(ENEC VDE UL Approvals)--jb top sellers, cross to Arcotronics R46, prices & lead time are very good. with ENEC VDE UL approvals, quality is very reliable.

Please contact Ms. Lilian Zhu for more details at  info@jbcapacitors.com

jb Various Film Capacitors Strong Support in Prices and Quality

Prezados Senhores,

Ola! Dias atras, eu te enviei e-mails sobre capacitores de filme X2, voce recebeu?
Por favor, queira prestar mais atencao aos nossos abaixo capacitores de filme mais fortes da serie, podera enviar qualquer pergunta sua.

A jb capacitores E hum Fabricante com Certificado ISO, Que produz e vende DESDE 1980 Mais de 22 Tipos de capacitores Filme plastico MKT, MKP ...
ESTAMOS localizados los HK e Taiwan com Tecnologia avancada e vendemos Qualidade com precos atrativos

Linha de produtos principal da jb Capacitors Company
JFA--Capacitores com Filme de Poliéster de Mylar
JFB--Capacitores Metalizados com Filme de Poliéster
JFL--Capacitores Metalizados com Filme de Polipropileno
JFG--Capacitores de Filme com terminais Axiais
JFZ--Capacitores Metalizados classe X2 com Filme de Polipropileno-310VAC
JFP--Capacitores Metalizados de Polipropileno para Alta Tensao
JFQ--Capacitores Metalizados de Polipropileno de Duplo Face
JFS--Capacitores de Filme para Motor de Partida
JFX--Capacitores Metalizados de Polipropileno com qualidade superior

jb Capacitors Company Show Room Overview

We would like to show you around of our jb Capacitors Company. The best way is to check below website pages.

In this section, you will know the most strong products of our jb Capacitors Company, such as JFA, JFB, JFV, JFZ, JFX, JFS, JCS, JRA and so on .
www.jbcapacitors.com/showroom-jb-Capacitors-Products-Photos.html

In this section, you will feel impressed by our all kinds of catalogs and least, as well as our comprehensive sample kit.
www.jbcapacitors.com/showroom-jb-Capacitors-Promotion-Photos.html

In this section, we will like our international standard envelopes and packages. All we want to do is to protect our products and show our professional working manner.
www.jbcapacitors.com/showroom-jb-Capacitors-Package-Photos.html

In this section, we will talk you go with jb sales to our exhibition booth all over the world. Germany is always our priority in exhibition list.
www.jbcapacitors.com/showroom-jb-Capacitors-Exhibition-Photos.html

We will update our jb production line and safety approvals VDE, UL section very soon, please follow up with our step and enjoy your jb capacitors trip.

jb Superior Audio Capacitor JSX Will be Released Very Soon

Does your market has demand for low DF values audio capacitors, that is to say the superior audio capacitors, which is a higher level of our present JFX.
We call it as JSX, we sell JSX a lot in our domestic market and enjoy extraordinary feedback.
We're planning to promote JSX to oversea market too. 

Please send us your RFQ if you are interested in pursuit higher quality products.
Limited samples are on hand now. First come, first served. We are looking forward to cooperate with you.