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crossover

  1. D

    Need a Crossover Schematic for EWV Sentry III Series 1

    I need a crossover schematic diagram for an EV Sentry III Series 1 speaker. It is a 3-way with crossovers at 600 and 3500 Hz. I think a capacitor has gone bad - the midrange horn does not work.
  2. K

    Lightning damaged Dunlavy SCII’s?

    I got a pair of SCII’s as part of a trade recently with a known issue. There is very low bass output below 160hz or so. I tested the woofers individually, they definitely are able to hit the lower notes when not hooked up to the crossover and the mids and highs sound wonderful. I removed the...
    • Kevin6860
    • Thread
    • crossover dunlavy speaker recap problem
    • Replies: 10
    • Forum: DIY
  3. kingscoins83

    Braun L1030 internal update

    Hello to all, It's been a while since my last post and I find myself in need of the forum wisdom again. I'm trying to internal update my daily drivers, a pair of Braun L1030, but I don't know if it's worth it and if yes, if I'm using the correct parts. I should point out from the beginning that...
  4. nniemiec

    ALK Universal Economy Crossover for the Heresy

    i'm trying to slowly secure the parts & make my own eventually. Seeking confirmation on: - the (3) inductor values in the crossover? - How to build or secure an L-Pad that faithfully aligns with the original design goals with respect to damping factor? My notes indicate the inductors should...
  5. engstrom

    Help With Crossover Design Identification

    I'm a complete novice to the audio world and I'm hoping someone more experienced can help me understand the design of this crossover. It's from an Allen Organ HC-15 3-way speaker (15" woofer, 4" mid-range, & 1" tweeter). I looked up a few 3-way crossover designs and the closest matches were 2nd...
    • engstrom
    • Thread
    • crossover crossover design help needed organ speaker
    • Replies: 9
    • Forum: DIY
  6. David Bright

    Altec 602D Duplex crossovers

    Hello, I have a chance to get a pair of these, but both are missing the crossovers. Can I find a modern day alternative, or should I look for original crossovers? Thank you! David
  7. H

    Realistic Minimus-7W Crossover capacitor

    Hi. I have a pair of Realistic Minimus 7’s, walnut veneer, model no:‘40-2039B’ (Currently powered by a Yamaha A-1.) Want to have them working at their best, although they’re very enjoyable in their current state. A simple service/upgrade would be to replace the single capacitor in the...
    • Hifibythekg
    • Thread
    • crossover crossover capacitors loudspeaker realistic minimus 7 realistic minimus 7 walnut tweeter
    • Replies: 35
    • Forum: Speakers
  8. Jxmos

    Chicago Condenser Corp capacitor value?

    Anyone know the value of these caps based on the markings? Marked - Chicago Condenser Corp 135765 and 10296. They both test as 12uf with an LCR. Are they 12uf?
    • Jxmos
    • Thread
    • 2400 chicago condenser corp crossover jbl
    • Replies: 16
    • Forum: Tube Audio
  9. turnitup

    Vandersteen 2CI Burned Resistors

    I acquired a pair of Vandersteen 2Ci’s about 15 years ago, with known issues. I was about to get rid of them, but decided to dig into them to see if I could get them working again. One speaker had a blown tweeter, and a blown woofer. I tore the drivers down and was able to repair both of them...
    • turnitup
    • Thread
    • 2ci crossover resisters vandersteen
    • Replies: 31
    • Forum: Speakers
  10. Refugee

    ML-1C Dampening Material ?Question?

    I have a pair of ML-1C speakers acquired last year that I plan to recap the crossovers on. I have the caps and resistors and material to put the woofer back in with a proper air tight seal. When reading Roger Russell's page I saw that the speakers are an 'overdamped' design. I believe this has...
    • Refugee
    • Thread
    • crossover dampening design ml-1c recap tips
    • Replies: 3
    • Forum: McIntosh Audio
  11. H

    SB-C 250 speakers crossover

    Post deleted. Found an answer from schematic.
    • Hifibythekg
    • Thread
    • capacitor cross overs crossover crossover cap value national panasonic sb-c250 speaker
    • Replies: 0
    • Forum: Speakers
  12. Hafizullah

    KLH classic Model 5 inside wiring — req. for advice

    I've got a pair of old Model 5s that I'll be restoring. Not impressed with the interior wiring and in addition to recapping (and maybe replacing the iron-core inductors with air-core), I think I'll replace the interior wiring with 16awg OFC or OCC, and prolly be silver-soldering the leads...
  13. D

    So what do I do with these speakers?

    I’ve got some RTR EXP-12’s I’ve been using for a while and I’m looking to go through them and change stuff up. The woofers aren’t original (shame), they’ve got a QTS of 0.33 and are JBL LC S1200w woofers. I’m a little sad they aren’t the original Alnicos with a 2” VC but oh well. They’re car...
    • djedee
    • Thread
    • crossover exp-12 idiot jbl rtr speaker modification subwoofer
    • Replies: 0
    • Forum: Speakers
  14. John Carr

    Crossover Help Needed

    I am designing a speaker crossover and would appreciate some help. I have come up with this and before I order parts, is there anything that should be changed or is it to y'alls approval?
    • John Carr
    • Thread
    • crossover diy graph speakers crossover
    • Replies: 0
    • Forum: Speakers
  15. C

    Puzzling issue with c1963 MC250 distortion

    I have a much loved system that I inherited from my father: Mcintosh MC250 amp MX 112 preamp/tuner Bozak B400a loudspeakers All purchased in 1963 Several months ago, the system developed an issue with the left channel, a muffled, distorted, crackly sound. I swapped speakers L-R, and the...
  16. S

    Realistic Nova-15 Recap

    Hi, I scored on some Realistic Minimus 26 in mint condition, the sound output is amazing, mids and lows sound crisp, a bass is punchy enough for yard sale find... This inspired me to buy a pair of Realistic Nova-15, I have done my research on RS's Realistic line and I love the vintage vibe...
    • Sweet Al
    • Thread
    • crossover crossover capacitor realistic realistic nova 15 recap
    • Replies: 0
    • Forum: Speakers
  17. H

    Speaker crossover capacitor advice - Technics SB C-250

    Have just acquired a pair of Technics SB C-250 vintage speakers. Generally they’re positively reviewed and I’d like to get them performing at their optimum. Questions: -What is the key quality one should seek in capacitors being used in a loudspeaker crossover (low leakage? or something...
    • Hifibythekg
    • Thread
    • capacitor crossover crossover capacitors loudspeaker sb-c250 speaker technics
    • Replies: 19
    • Forum: Speakers
  18. Chadrick

    Electrovoice Aristocrat refurb/update - adding a Radian 475 and Eminence H290 horn

    I am refurbishing and updating a pair of Aristocrat corner horns that were generously gifted to me. They came loaded with a mishmash of various horns and tweeters and supertweeters and three way crossover bits (none of which matched) on a leaky baffle with extra holes. None of this was original...
    • Chadrick
    • Thread
    • aristocrat corner horns crossover electrovoice
    • Replies: 21
    • Forum: Speakers
  19. sean sweeney

    Anyone know how to identify the source of this JBL N800 crossover?

    Ok... as usual this thing ate my post... lol... Just found this cool, very old JBL N800... typically made with the altec name... Saw some stuff on line that these may have been used in the giant Ampex monsters they made for theaters in the 60's... not sure but were they in the 50's??? The JBL...
    • sean sweeney
    • Thread
    • altec ampex crossover jbl n800 vintage vott
    • Replies: 2
    • Forum: Speakers
  20. Airjmax

    Crossover Help Please

    I would like to bypass the attenuators/pots on this Sansui AS-300 crossover, but I'm not 100% sure how. The pot on the left (HF) is very corroded and I don't want to try to rebuild or replace it. Any help would be greatly appreciated.
    • Airjmax
    • Thread
    • as-300 attentuator crossover sansui
    • Replies: 6
    • Forum: Speakers
  21. Z

    Crossover caps, why use in parallel?

    Hi, a quick one for the techies amongst you. Checking over the crossovers in my Ditton 44's there are two instances where the manufacturers have used 2uF caps doubled and even tripled in parallel, to give 4 and 6uF respectively. These actually meter out at 6.9uF and 8.5uF so I think I should...
    • ziggydave
    • Thread
    • capacitors crossover doubled film capacitor
    • Replies: 9
    • Forum: Speakers
  22. B

    Infinity IRS Omega

    Hey all, As some of you may know, I recently purchased a pair of Infinity IRS Omegas. There's not too many around and as such there's not lots of info on them on the internet. Curiosity got the better of me today, and I decided to take a peek inside one and figured you'd all like to see as...
    • Brealytrent
    • Thread
    • crossover emim high energy emim infinity infinity irs infinity irs omega irs omega revel watkins woofer
    • Replies: 6
    • Forum: Infinity Loudspeakers
  23. canuckken

    Crossover Upgrade Help

    I am trying to revive an old set of speakers that have electrolytic caps. The crossover has a Pot which I would not mind removing from the circuit, is that a good thing or should I leave it alone? I was never a fan of tweet pots, I have always assumed that its an extra added to the circuit...
  24. J

    Realistic Optimus 2 tweeter replacement/upgrade

    I recently picked up a set of four realistic Optimus 2s from the original owner. He included a QTA-790 quad receiver (with working remote!) that he bought as a package in ~1974. Speakers are in very good physical condition including the woofers which appear to have fabric surrounds. However, all...
    • Jason299
    • Thread
    • capacitor crossover optimus realistic tweeter
    • Replies: 18
    • Forum: Speakers
  25. A

    Grundig Box 100 (LS100) Crossover question

    Hello, I recently purchased a really nice pair of Grundig Box 100s from the child of the original owners. The speakers were purchased while they were stationed in Germany in the 60s. The speakers are lovely, they sound great, and I would like to get them fit for consistent use. I want to...
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