crossover

Short disclaimer, I’m rather new to (audio) electronics, I hope the approach and my questions are not too basic. I recently acquired said speakers. Initially the sound was truly underwhelming. After some research and maintenance of tweeters with new ferrofluid it improved, but overall, the...

I want to recap a pair of ESS AMT 1AM, but here's the catch. A local audio shop in Kansas (Audio Mart) upgraded them back in the late 70's early 80's. I believe these are called Custom Monitor Elites adding a midrange speaker in place of the passive woofer. Anyway, the crossovers are...

Hi all, been a while since I posted, so greetings and good wishes to everyone out there! I've got a single Heathkit SS-1B "range extender" (add-on to the SS-1, providing extended lows and highs). Had it for years since I acquired it from someone in the area, who was cleaning out his basement...

I am troubleshooting a no-sound issue on a Miller & Kreisel MX150 mkII. Before anything I checked the motion of the front woofer to find that the voice coil was stuck. Not rubbing but darn STUCK. ( figuring it was just a shifted plate issue ) I removed the magnets and plate, voice coil looked...

Hello all. New here and looking for some info. I purchased a pair of 70s klipschorns that appear to have some modifications to the crossovers and the horn “upgraded” to wood. Can any help identify origin of these upgraded parts and thoughts of if the upgrades would have a positive impact on...

I am refurbishing some vintage 2-way speakers (Goodmans Mezzo SL) and I would like to rebuild the crossovers using point to point rather than just recap the existing PCB. I traced the PCB circuit to work out the schematic, but something looks odd to me: it appears the is no filter on the signal...

I've had a pair of Jensen Coaxials (model h223f) for a decade now. They've mostly just sat around, not making much of a fuss. Minding their own business. These speakers sound quite good for their age and technology. The woofer is Jensen's 12" FLEXAIR woofer. Apparently these "flexair"...

Why have Sonicap capacitors gone up in price? I'm not talking double, but about 5x the cost of what they used to be a couple of years ago. Just puzzled by the price increase. Is there any places other thank sonicaft, they can be purchased from?

I have a unique Leslie speaker setup that is a modified Leslie 925 from the 70s, but only the top horn section for use in a guitar rig. I'd like to copy this crossover that was used in the original that I am copying, looks like 3 components wired in a series>parallel setup but I'm having...

I'm restoring a DLK 1 1/2 crossover and I came upon this configuration shown in the photos. There are TWO of the standard 10/ 50 capacitors instead of the usual one. They're connected together. I'm wondering if anybody has seen this kind of setup before and if so what would be the purpose? At...

Hi, I have a strange problem with Kappa 8A. When I listen at low volume, the Polygraph remains silent for a long time, it may take an hour before the sound starts to come out. The bigger the volume, the faster the element starts to work. If I increase the volume considerably, the sound can be...

Hi all, I recently acquired a pair of Altec 808-8A drivers with N809-8A crossovers from an old railway clear out up north. Needless to say they looked pretty rough but I felt they might be worth a gamble for 100 bucks. In fact “rough” might be a slight understatement, they appear as though they...

Hey, all. OK, I realize this subject has been addressed in other threads, but I'm still confused about what to do. First off, I love these KLH 6's with my little push pull 15-watt maggie. But the left speaker suddenly sounded dull, and it turned out the tweeter was not working. The tweeter...

Hello everyone, I got a pair of vintage Electro Voice speakers (EV Saphir) they are not exceptional, but I want to repair them for entertainment. They are 3 way. The midrange speaker doesn't seem to work on either box (it doesn't make any sound) but taking them apart and testing them separately...

Hi! I have been restoring vintage KLH speakers for a few months now. I found a free pair of Boston Acoustics A200s that needed some foam surrounds. Loving the Kloss sound, I thought I'd give it a try. Anyway, I replaced the surrounds. First time. It wasn't as bad as I expected. I replaced the...

Hi folks, Please just "tell it to me straight" on areas I could improve on the testing process I define in my video below. Please do keep in mind I really didn't want to remove these speakers and do a "formal" near field test. I tried to keep the before and after as close to apples-to-apples as...

I've been researching upgrading the crossovers in my Polk Monitor 10s for awhile. I've upgraded the tweeters to RD0-198s but have decided swapping the capacitors would also be a fun project and from what I've read will improve the sound even more. So far I haven't been able to find a schematic...

HI! I don't know if I've posted here before (my account was apparently already created but I can't see that I've posted anything), but I have a little DIY crossover upgrade project I'm working on and was hoping to get some advice. 6 months or a year back or so I bought some Neumi BS5 bookshelf...

Hey Guys - I recently restored the cabinets & drivers on a pair of old JBL L166's. I replaced the caps on the crossovers with new 4 & 8 ohm ones but when testing, something didn't sound 100% right. When adjusting the L-Pads, I got a lot of cutouts and scratching. I bought some Deoxit which...

Hi all, first post here. I picked up a pair of Norman Labs model 11’s from a guy in the Dallas area a couple weeks back. Never heard of them, but they had some interesting reviews here, so I figured for $60 I couldn’t go wrong. I was having some issues with intermittent audio from the...

I'm a relative novice at this but am going to try and replace the binding posts on my Fried Q3 speakers. While I've got it opened up, I thought I'd replace the caps in the crossovers as well. I found a schematic on the web and purchased new caps from Parts Express. The 8uF seem to be polarized...

I visited Simply Speakers today and asked which surround I need for these later model Advent speakers - "Bullnose" model. Waiting for their response. I bought these a few weeks ago for $80.00. Cabinets and grills are in pretty good shape. I suspected they would need refoaming, since the seller...

Hello, I'm new to this forum, although have been reading a lot of posts on here, but now need to reach out for some specific help! I have been designing a system that is quite large, and am right about at the stage to build test cabs to take measurements from to then fine tune before the...

Hi all, I recently posted this on the Lansing section and did not get much traction in my thread there, so I thought I would give it another go here. Essentially I picked up a pair of old JBL L65As and I am trying to evaluate if the crossover need some parts replaced or not. I recently got an...

I bought a minidsp DDRC-88BM about a year ago with the idea of using it as an active crossover with room correction and have several amps to roll. but can't bring myself to do it mostly out of fear of blowing up one of the drivers which are just to rare to find replacements. my plan was to use...