2 жыл бұрын
2 жыл бұрын
Пікірлер
@dennishansen817 2 ай бұрын
Hej. Har du også farvet dust cover på bassen ? Og gjort noget ved mellem tonerne ? Synes de ser så flotte sorte (mørke grå) ud som nye. Mine er nærmest lys brune. Kan man gøre noget ved det ?
@SorenKoelbaek 2 ай бұрын
Hej Dennis, jeg har ikke farvet dust-cover på bassen og mellemtonerne havde ikke fået lys-skader. jeg har hørt om at anvende sko-sværte til at give mellemtonerne en flot sort shine.
@stairwaytomusic71 3 ай бұрын
Thanks for uploading it, beautifully done. BUT, as few people said about the painting on woofer, I would recommend to use Aquaplas to restore. All the best.
@SorenKoelbaek 3 ай бұрын
Aquaplas is the right material however, it is not possible to source as a a material (or very, very hard). When i researched and made enquiries last time, it came by the barrel, only in grey and had a shelf-life of 6 months. It is a rebrand of a material devised and sold as a structural paint used in large ships for acoustical control in engine rooms, apparantly. Also, I do not know if you can repair with Aquaplas - I would think you would have to have a raw paper-cone to give it an equal treatment.
@steveogee7458 4 ай бұрын
Painting the woofers the correct way only increases the cone mass less than .05%. It's an Aquaplas coated cone. Do it.
@ScootieXP 5 ай бұрын
As someone who is contemplating buying a JBL set of speakers, which one would you choose? L100 or L112?
@SorenKoelbaek 5 ай бұрын
hard to say - the L-100 centuries have their shortcomings, the L112 some other. I really don't like the tweeter of the L112, and the woofer driver needs to be refoamed and therefore there is more maintenance. However, you might find they are not as "boomy" and "bassy" as I've found being the L-100 problem. end of the day, I would trry and listen to both and see whatever fits you. the good thing with vintage audio is you don't usually lose money buying and regretting :)
@ScootieXP 5 ай бұрын
@@SorenKoelbaek Thanks for getting back to me. However, please elaborate on the following: "However, you might find they are not as "boomy" and "bassy" as I've found being the L-100 problem." Maybe its my bad english but I didnt get that part. :) You lost me at the L-100 problem.
@SorenKoelbaek 5 ай бұрын
@@ScootieXP Your experience may vary, but in my opinion the L-100 tries to sound "bigger" than it is. Which results in a low-range that is not as precise at it should be: it has a lot of bass - for some modern music too much. Hope that helps.
@ScootieXP 5 ай бұрын
@@SorenKoelbaek thank you.
@EggMCMUFFIN-e4l 7 ай бұрын
Damping* not dampening...
@SorenKoelbaek 7 ай бұрын
thank you for that clarification!
@BlankBrain 8 ай бұрын
I built JBL 4343 clones in 1978 with the help of my stepfather. All I had was the sales literature. I wrote to JBL, but they wouldn't provide more information. I used 1" and 2" oak glue blocks inside. Parts of the back are 2" MDF. I banged on the outside with my fist and added material to get rid of resonances. The baffle panels are two layers of (void-free) ½" marine plywood. I seal them with cork. I was going to use veneer on the outside, but opted for Wilsonart teak plastic laminate. It has better sound characteristics, has held up extremely well, and fools woodworkers. Applied polyurethane to all internal surfaces to prevent moisture intrusion. I replaced the 2231As with 2215As. I replaced the 2307 horns and 2308 diffraction lenses with Transylvania Power Company "The Tube" (Karlson couplers) on the 2420 compression drivers. That got rid of the nasal tone and allowed them to go above 20 kHz. I couldn't afford the 2405s, but decided I didn't need them. I borrowed an HP Wave Analyzer to tune the 4" ports, which are much longer (with elbow), and tuned for smooth lower response. I used polyester rather than fiberglass batting. It took a lot of experimentation to get the amounts and locations right. I bought active crossovers and tri-amped, mainly because I didn't feel skilled to design good crossovers. Had the surrounds replaced about 25 years ago. I've never wanted different speakers. www.diyaudio.com/community/threads/fs-pair-of-transylvania-power-company-the-tube.316728/
@remiremillard8419 5 ай бұрын
what do you use for a crossover?
@spanishjohn420 8 ай бұрын
where can i get new foam bits for the tweeters
@SorenKoelbaek 7 ай бұрын
They can be a bit hard to source - Ebay is your best friend, although I don't know any of the current sellers offering them, so I can't vouce for them directly. When you get them, please take care of removing the old foam and especially the leads for the driver than runs underneath. normally you can peel the old glue-pad off of the tweeter, but try to do it parallel to the leads so they don't break. There are a little bit of info and photos regarding that here: auditur.dk/jbl-l-100-speakers-a-guide/
@spanishjohn420 7 ай бұрын
@SorenKoelbaek Perfect mate thanks so much. I have ordered the foams from ebay and your advice is appreciated for when I fit them Thx
@davemchine 8 ай бұрын
I would enjoy a video showing how to properly clean the knobs and buttons. Mine have become noisy and I hate to ship the amp just for a cleaning.
@SorenKoelbaek 8 ай бұрын
If it's noisy, then it's contact cleaning and It's showned above around 5:10 - it's pretty easy: the entire idea is to get your contact cleaner between the contact and the carbon area of the switch or potentiometer. As mentioned in the video you need to use contact cleaner without lubrication for buttons or switches and contact cleaner with lubrication (some brands have cleaner and lubricator as seperate products) for knobs/potentiometers. If you need to clean the physical knob (not the electrical component, but the metal knob) I usually use window-cleaner and an old toothbrush :)
@ingilizanahtar644 8 ай бұрын
Sound problem?
@farleytaylor5493 8 ай бұрын
Bello.
@AudioElectronicsChicago 9 ай бұрын
Awesome
@bobsmoot8454 10 ай бұрын
Nice job on the conversion. On DIY projects with well known entities like jbl or Altec, they have an insane amount of resource materials that can help guide you and others on the the best way to get the most out of their products, such as vent size, cabinet dampening, crossovers, etc. Altecs usually require minimal dampening like only 3 sides vs all 6, please take this in the way it’s given as a tip not a criticism because your implementation is pretty damn awesome
@robertthurston6858 10 ай бұрын
Tell us how those big JBL 4343 sound ? I only have and heard my large Tannoys.
@SorenKoelbaek 10 ай бұрын
They sound as big transparent studio monitors. I like them, but they are also very revealing and every listening session becomes a critical listening session with all details and errors highlighted. I do love them, but the Altec (which reminds me of Tannoy Ardens) have a lot of the same clarity while being a little bit more relaxed. So I find myself enjoying more records that sound awful on the JBLs
@robertthurston6858 11 ай бұрын
The inductors should be placed right angles from one other. Because it stops magnetic interference from each other. Look it up in crossover building on KZbin. It actually shows the noise created.
@SorenKoelbaek 10 ай бұрын
Hi Robert That is correct. and it would be relevant if I where designing and building my own crossover. This is the Great Plains Uadio crossover sold for the unit
@robertthurston6858 10 ай бұрын
I could easily modify it. P.S. Great speaker projects both JBL & Altec.
@SorenKoelbaek 10 ай бұрын
Well, true - I swapped them out for a pair of Werner Jargusch phase corrected crossovers instead of changing the original part. I don't really like modifying, especially when it's so easy to just build another :) @@robertthurston6858
@johnenglishIII 11 ай бұрын
Hey pal! How are you liking these? I am planning on doing something very similar with the same drives as a first DIY proyect and I am curious if you are happy with it.
@duskostanojevic5210 Жыл бұрын
es wahr ein mahl ein Accuphase P-300
@Сергей-с3ъ3м Жыл бұрын
Человек хорошо делает не то что в наших роликах безвкусицв полная к
@fascination.sound.and.groove Жыл бұрын
*Nice sound* 🤠😎
@jeffm1896 Жыл бұрын
Doesn't painting the woofer change it's stiffnees and dynamics, increasing it's mass making it less efficient?i
@SorenKoelbaek Жыл бұрын
In theory; adding mass to a woofer changes it's stiffness and mass - however there are a lot of changing factors in 50 year old speakers; the surround, the alnico magnetic field and the changing stiffness of the paper + aquaplas coating. On top of that, JBL (as with any manufacturer) produces units and crossovers and cabinets within tolerances, so adding a minute mass of paint to the woofer cone is not something you would be able to measure or hear in the final speaker. That being said, it is non-reversible so normally I would not do this, unless there was damage to the aquaplas coating or a previous botched repair (as in the video).
@dennispham8708 Жыл бұрын
Hi so I have one of these but it’s missing a power cord is there one online I can buy I haven’t found one yet
@hvxboy Жыл бұрын
Great job. A m a fan also of JBL retro speakers , building myself now a L100 clone . Nice record at the end there . Could you tell me the artist ? And have you som recomandation jazzy music for good 12 inch woofers ? Hilsen Tore from Norway
@skumflum3768 Жыл бұрын
Awesome
@Justas-M Жыл бұрын
Nice!
@wilhamcobly3805 Жыл бұрын
wrong method for repaint woofers, sorry - first of all you used too much paint, making the cone heavier and it will no longer respond to its original characteristics, then you left out some points in the masking, and it shows. Thirdly, the aquaplas woofers have a yellowed edge which gives them an original feature, it is the glue used to fix the pleated edge - in my opinion, if not too yellowed or scratched, the aquaplas cones should not be touched - I have had many pairs of 4310 - 4311 - 4312 - only on one occasion have I used water-based, acrylic paint, VERY diluted and with a small roller, blending in the border, in order to "refresh" the white but leaving the glue border yellowed - I assure you it is much better, especially below the sound profile
@ScootieXP 2 ай бұрын
Can you describe you method in a little more detail? Like what kind of acylic paint used, method of application, etc. I just aquired a JBL L100 and im thinking to do the same restore as in this video.
@pietromanno8916 Жыл бұрын
GREAT JOB!!! KEEP IT UP!!!
@mogensm.andersen6224 Жыл бұрын
Building your speakers in an apartment is … messy. Using a bit router without a vacuum cleaner connected is….. dusty. Serious projects you are committed to.. Keep up the spirit :-)
@SorenKoelbaek Жыл бұрын
Thanks! And I agree - space is a premium and when you don't have a dedicated workshop you'll have to do with what you have.
@williamjverhagen Жыл бұрын
What brand black spray paint. Was it Matt finish?
@williamjverhagen 8 ай бұрын
9005 matte black
@richardhuston2426 Жыл бұрын
The L-100’s are not notorious, they’re famous. Big difference. I own 4 that I bought in 1978, all still mint condition.
@millohenry Жыл бұрын
How do I remove the face plate on the JBL CENTURY to do an upgrade on the crossover
@SorenKoelbaek Жыл бұрын
Glad you asked - I'll respond in 2 parts: 1st part: With a minor heatgun and a good pair of japanese putty knives. Slowly heat up the foilcal and with the knife flat on the baffle you slowly with a steady force pres it underneath into the glue. You are heating up the glue. Keep the foilcal flat at all times, no bends or anything as you'll never get them out again. Store them on a piece of glass and you can reheat when you are done. 2nd part: please be aware that the crossover components by JBL are not electrolytic capacitors and therefore do not degrade over time. Moreover they are using values that are not common today. All of the crossovers i've had measured to specification without any issue. I would not upgrade the crossover as it makes the speaker a completely different animal. BUT you do you ;)
@tonnihaugebilde2809 Жыл бұрын
Great lil vid. Might need some more substance though? A new vid maybe? Aside from that, You have it in You Soren! Keep èm comin´...
@earthexplorer579 Жыл бұрын
what size sand paper and paint you used here?
@SorenKoelbaek Жыл бұрын
I believe i worked from grit 120 to 320 and no higher. For the front face, just a matte black - I believe it's ral 9005 :)
@celticwoodworking8706 Жыл бұрын
During the 70's and early eighty's I was a professional musician. Every studio I walked into had a least one pair of 4310 JBL speakers for the engineer monitors. I always smile when people talk about the music is " supposed to sound" , because unless your standing in that room listening to the final mix, you will never know. The 4310 has always been my go to speaker for reference when it comes to rock music. Music is subjective and whatever sounds good to you is the right speaker. Thank you, as this was a wonderful walk through some great memories. Well done video work as well.
@SorenKoelbaek Жыл бұрын
I do like them, however it does has it's own sound, and there are bigger and better studio monitors that are more revealing, but it's a double edged sword. The L-100 was very widely used, alongside the Altec / Urei Coaxial monitors or the bigger 43XX series. The L-100 was often times used as a way to say "this is probably how it would sound at someones home" - where the other monitors where used for mixing and are "too" reveaeling. But that is the reason I have a set of 4343's as well :)
@VINTAGEs-ro1yv Жыл бұрын
What color is the spray 🙏🙏🙏
@SorenKoelbaek Жыл бұрын
It is Montana Gold eggshell primer :)
@SorenKoelbaek Жыл бұрын
I'll have a look and try to find the product no
@VINTAGEs-ro1yv Жыл бұрын
Thank you very much, I would appreciate if you write the paint code  Thank you very much, I would appreciate if you write the paint code
@ianmartins Жыл бұрын
Great video, I recently scored a pair of JBL L112’s in rough cosmetic shape, but they sound great. I was contemplating painting the woofers as the old glue looks awful… interesting reading your earlier comment re speaking with JBl techs re:sound after painting. Might give it a go myself.
@The_Angry_BeEconomist 2 жыл бұрын
I live in a single bedroom apartment as well. I moved my bed into the living area and my bedroom is now a dedicated woodwork area.I also have the same circular saw and drill, but I'm not really happy with that circular saw, it hasn't got a really sturdy base, but I will probably get a cheaper corded saw with a sturdier base.
@nopochoclos 2 жыл бұрын
1:.43 bad method, ,you need to apply glue to both parts first, then the part to be glued must be bigger, put over the entire side of the damage, then need to be sanded very slow, the part copy the damage hole perfect and like jigsaw no difference.
@SorenKoelbaek 2 жыл бұрын
Thanks for the feedback - I'll try that another time ;)
@geraldobrandi8280 2 жыл бұрын
Belo serviço! Essas L100 são fantásticas! Som de qualidade muito acima do normal em um projeto muito simples! Parabéns por cuidar e salvar mais um par dessas preciosidades!
@KillerKlipsch 2 жыл бұрын
The Danes, they just cant help themselves, perfection is a way of life.
@alvaroriascos3004 2 жыл бұрын
I have some PIONEER HPM 100 and I want to restore both their cabinets and their Driver cones. What do you suggest for the woofer cones? Thanks from Colombia.
@raykuiper4979 2 жыл бұрын
Like very much what you have done with your JBL.Idid on a sort of similar way the same with my Leak Sandwich 600 ,which I like a lot.
@robwakefield5958 2 жыл бұрын
Can you tell me what paint you used please as I have also seen online not too paint the woofers, tks
@rat8356 2 жыл бұрын
Um you forgot the most import thing!..The grills
@Ju5t1z3 2 жыл бұрын
Awesome. Just finished replacing one of the two woofers by an original LX44 Woofer and Refoaming both JBL LX 44s Woofers. Awesome channel !! someone actually enjoying music
@filipfilipovic1566 2 жыл бұрын
Curious why didnt you sand the front/back but rather just filled and sprayed them?
@SorenKoelbaek 2 жыл бұрын
Hi Filip - The filler was just meant to fill cracks and even out the surface for the paint. There was no real need to sand the front and back down completely as long as the surface was smooth. As you can see I did sand the filler and surrounding area to even it out :)
@dragonflymoxie5646 2 жыл бұрын
Ugh….painting a cone?….you may as well re-engineer the crossover to attempt fixing that fatal error.
@AlejandroGomez-yx1sg 2 жыл бұрын
Congratulations! What a nice setup, Soren. Greetings.
@ballisticviking0292 2 жыл бұрын
Whats that drill press?
@SorenKoelbaek 2 жыл бұрын
Just some old - Powercraft i think. Sturdy and kind of solid ;)
@alvarezmail12 2 жыл бұрын
Wtf????
@reubensylvester8818 2 жыл бұрын
Nice video and i am actually inspired because I am in the process of doing what you did. I have acquired all the original parts and drivers for building a Yamaha s4115h speaker system. Is it possible for you to guide me on how to obtain the cabinet drawings with dimensions? Any guidance in this regards is much appreciated. Thanks in advance, Regards.
@SorenKoelbaek 2 жыл бұрын
Hi Reuben I would love to help; I’ll try and do some research on the speaker you mentioned as I don’t know it - The. I’ll get back to you My main advice is to try to locate owners on forums. ask questions and for pictures - There are a lot of minute details that will be hard to ascertain without specific knowledge.
@SorenKoelbaek 2 жыл бұрын
I’ve found a restoration video; that could serve as some very good reference material for determining; material width, structural parts and the enclosure dimensions. I would start there with a drawing and doing some math; measuring parts of your drivers and then referencing that on screenshots from the video. That would probably serve as the best source for plans without someone with a pair wants to share direct measurements with you. I would think you’ll never find a blueprint or plans, but you could probably get critical measurements from owners :)
@reubensylvester8818 2 жыл бұрын
@@SorenKoelbaek thanks, this is a really helpful insight. Will take this route.
@MaudKonyn 2 жыл бұрын
Good solution. Ive had my bed on beer crates for years, so much space underneath. Looks like you have a lot more desk space now too, or is that visual illusion? Anyway; I've moved to Copenhagen recently. If you're looking for a new place to live, I'd be open for a flat share with a workshop in the living room. By biggest issue now; finding a place where I can have my old campervan close by but not on public road, so I can work on it and unregistering it (so I don't have to pay taxes or insurance).
@SorenKoelbaek 2 жыл бұрын
Hi there - thanks for the reply! - I've actually changed the bedroom and bed again to have a much bigger workshop in there - (video coming soon!) Copenhagen can be a bit hard to find apartments in - and with the need of private roads it doesn't get easier. I know of some places having private parking garages that might allow for unregistering vehicles? otherwise the dream would be a private garage / workshop
@MaudKonyn 2 жыл бұрын
@@SorenKoelbaek ah nice, I'm looking forward to seeing that :) May be good inspiration for my next place (current rental contract is expiring). And yes absolutely, finding a place for me and my van is a nightmare. I'm indeed looking into renting a workshop/garage, but then I'll still need a place to sleep. So, what do you make in your workshop? I saw your two videos on sound systems. Is that your profession or just a hobby?
@SorenKoelbaek 2 жыл бұрын
@@MaudKonyn It is my hobby - or at least my job pays for that interest ;)