I have a question about a vintage speaker's crossover. I would like to recap the crossover of my Celestion Ditton 25. I would like to know if wise and with caps to choose from.
The crossover has 4 inductors and 4 groups of capacitors.
-First, a black Elap 50v 25uf, and
-three, with the same shap, red ''Erie'' metalised 150v 2uf A308, ''Erie'' ''metalised'' 150v 3.5uf A316 and ''Erie'' ''metalised'' 150v A316 3uf.
So there is one for each of the 4 drivers, the two turbine type tweeters have different one.
For the Elcap, it seems clear that is an electrolytic cap, but for the second it is less clear,
I gave a look online and the metallised cap is described as a fast cap. There seems not easy to find 150v electrolytic cap. So it is not an electrolytic cap, which is its type? Film?
The second mystery why there are two different model numbers.
A mate told me that the film cap could give a strident high. I listen to classical and early music so I won't experiment in this field.
In the past, I recapped my Leak 2060 with 3 blue electrolytic cap 50v brought from Falcon Acoustic in England. It was simple, I got ones with the same spec. It was a huge improvement.
The crossover has 4 inductors and 4 groups of capacitors.
-First, a black Elap 50v 25uf, and
-three, with the same shap, red ''Erie'' metalised 150v 2uf A308, ''Erie'' ''metalised'' 150v 3.5uf A316 and ''Erie'' ''metalised'' 150v A316 3uf.
So there is one for each of the 4 drivers, the two turbine type tweeters have different one.
For the Elcap, it seems clear that is an electrolytic cap, but for the second it is less clear,
I gave a look online and the metallised cap is described as a fast cap. There seems not easy to find 150v electrolytic cap. So it is not an electrolytic cap, which is its type? Film?
The second mystery why there are two different model numbers.
A mate told me that the film cap could give a strident high. I listen to classical and early music so I won't experiment in this field.
In the past, I recapped my Leak 2060 with 3 blue electrolytic cap 50v brought from Falcon Acoustic in England. It was simple, I got ones with the same spec. It was a huge improvement.
The Eries are metalised film capacitors which should be in no urgent need of replacement, but could be replaced by modern polypropylene capacitors.
DC WKG means direct current working - replace with a similar voltage rating.
DC WKG means direct current working - replace with a similar voltage rating.
Thank you for your fast and accurated answer. I realised that I forgot some details. I read online that film cap are not NP. Is it a issue?
Why there are to ''model'' number A306 and A316. Maybe it is just random numbers ?
After 40 years should I change my Erie caps?
I realised after your post that my Leak 2060, recapped 2 years ago, with its 3 elcap caps was in badest shap that my Ditton 25. The sound was so flat before recapping.
Regards,
Jean
Why there are to ''model'' number A306 and A316. Maybe it is just random numbers ?
After 40 years should I change my Erie caps?
I realised after your post that my Leak 2060, recapped 2 years ago, with its 3 elcap caps was in badest shap that my Ditton 25. The sound was so flat before recapping.
Regards,
Jean
Film caps are non-polar (NP) caps.
ALL crossover caps, whether they be electrolytic or plastic film, must be NP types.
The metallised film caps, unlike the unreliable ELCAPs, will not have deteriorated over time, but modern polypropylenes may give you a smoother sound.
P.S. Forget the manufacturer's part numbers as these are not significant. All your Eries are the same type of capacitor, they just have different capacitance values.
ALL crossover caps, whether they be electrolytic or plastic film, must be NP types.
The metallised film caps, unlike the unreliable ELCAPs, will not have deteriorated over time, but modern polypropylenes may give you a smoother sound.
P.S. Forget the manufacturer's part numbers as these are not significant. All your Eries are the same type of capacitor, they just have different capacitance values.
Bonjour, je cherche à renouveler mon celestion 25 notamment les condensateurs.
Sur la carte filtre je vois des condensateurs en marron et gris, et j'aimerais passer en MKP, auriez-vous la gentillesse de m'aider ?
Je ne suis qu'un amateur et non un électricien ! C'est la première fois que je fais ce travail.
Questions :
1-Les anciens condensateurs chimiques sont à 50v les MKP vendus ici en France à 250v, y a-t-il un problème ?
2-y a-t-il un problème si j'augmente les valeurs des condensateurs, il y a des changements dans le son ?
Concernant la langue, mon anglais est catastrophique !
Bel été ☀️..Georges de Bayeux
Cordialement, George
Sur la carte filtre je vois des condensateurs en marron et gris, et j'aimerais passer en MKP, auriez-vous la gentillesse de m'aider ?
Je ne suis qu'un amateur et non un électricien ! C'est la première fois que je fais ce travail.
Questions :
1-Les anciens condensateurs chimiques sont à 50v les MKP vendus ici en France à 250v, y a-t-il un problème ?
2-y a-t-il un problème si j'augmente les valeurs des condensateurs, il y a des changements dans le son ?
Concernant la langue, mon anglais est catastrophique !
Bel été ☀️..Georges de Bayeux
Cordialement, George
The site requires you to post in English, George. Translation of your two questions:
1. The old chemical capacitors are at 50v, the MKPs sold here in France at 250v, is there a problem?
2. Is there a problem if I increase the capacitor values, there are changes in the sound?
Using 250 V capacitors in place of 50 V ones is not a problem. Go ahead.
However, you must use the same capacitance values or you will change the sound.
1. The old chemical capacitors are at 50v, the MKPs sold here in France at 250v, is there a problem?
2. Is there a problem if I increase the capacitor values, there are changes in the sound?
Using 250 V capacitors in place of 50 V ones is not a problem. Go ahead.
However, you must use the same capacitance values or you will change the sound.
Hello, I am looking to renew my celestion 25 especially the capacitors.
On the filter card I see capacitors in brown and gray, and I would like to switch to MKP, would you be kind enough to help me?
I'm just an amateur and not an electrician! This is my first time doing this work.
Questions:
1-The old chemical capacitors are at 50v the MKP sold here in France at 250v, is there a problem?
2-is there a problem if I increase the values of the condensers, there are changes in the sound?
Regarding the language, my English is catastrophic!
Beautiful summer ☀️..Georges de Bayeux
Kind regards, George
On the filter card I see capacitors in brown and gray, and I would like to switch to MKP, would you be kind enough to help me?
I'm just an amateur and not an electrician! This is my first time doing this work.
Questions:
1-The old chemical capacitors are at 50v the MKP sold here in France at 250v, is there a problem?
2-is there a problem if I increase the values of the condensers, there are changes in the sound?
Regarding the language, my English is catastrophic!
Beautiful summer ☀️..Georges de Bayeux
Kind regards, George
excuse me, I also just saw that there are 400v capacitors, does that pose a problem?
https://www.lamaisonduhautparleur.com/fr/condensateurs/1422-condensateur-mkp-pb-33-f.html
https://www.lamaisonduhautparleur.com/fr/condensateurs/1422-condensateur-mkp-pb-33-f.html
Below is an interpretation of the Ditton 25 crossover that I found on this site (ignore the inductor values).
I would be happy to replace the C3 and C4 parallel (side by side)capacitors with a single 3.3 uF capacitor.
And to replace the the C5 and C6 parallel combination by a single 4.7 uF capacitor.
C2 can be 2.2 uF, while C1 can be 25 uF.
All the above values are available from this site, for example: https://wilmslowaudio.co.uk/jantzen-cross-cap-capacitors
No, apart from the fact that the higher voltage polypropylene capacitors tend to be physically larger than the lower voltage ones.
Check all capacitor dimensions carefully to ensure they will fit comfortably on your circuit board.
I would be happy to replace the C3 and C4 parallel (side by side)capacitors with a single 3.3 uF capacitor.
And to replace the the C5 and C6 parallel combination by a single 4.7 uF capacitor.
C2 can be 2.2 uF, while C1 can be 25 uF.
All the above values are available from this site, for example: https://wilmslowaudio.co.uk/jantzen-cross-cap-capacitors
No, apart from the fact that the higher voltage polypropylene capacitors tend to be physically larger than the lower voltage ones.
Check all capacitor dimensions carefully to ensure they will fit comfortably on your circuit board.