Activity Stream

Is this based on the belief that AC capacitors have crossover/notch distortion when the current/voltage crosses zero like a bad class B amplifier? Or...

Hello, I have possibility to buy a set of used JBL, 2225H woofers, and i always wanted to build a pair of nice JBL Studio monitor like DIY...

Hello friends, I have 4 JBL 2242H woofers. I want to build the JBL 4642A cabinet for the woofers. Anyone can help me with a builing plan, and...

I picked up C38's the other day and they have an "un-specified" contingent of drivers etc. LX5 LE85 on 1217-1290 D130 Is this anything other...

Hello everyone. I have had zero luck finding any information on a "JBL 4501 Control Monitor". There is a listing for a pair that need repair and...

What touch-up stain/paint does everyone use for touching up our Black Ash Veneer finish our our L-Series. I want to touch-up a couple of small scuff...

Hey all, quick question regarding the foam bits just outside the foam surrounds of say a 128H or PR300- what are those called? I'm looking at...

Hello, My 4333A's are in need of repair. At the very least, the 2231As will need to have the surrounds replaced. One may need to be re-coned, in...

Specifically the C40 Harkness exponential horn with 500 hz crossover. Guessing maybe the 2220B might be it, but very grateful for anyone’s...

What I’m trying to find out is, who were the cooks in the kitchen so to speak with this series. I believe this was the last series to be US designed...

I've been running a pair of these at home with 375s for 20+ years now. I love horn dynamics and I love how transparent and invisible the 2397s are....

I had to get a iPhone because I switched out from Microsoft to an iMac and it is easier to down load pics, that being said I used my old Samsung S8...

Just realized I have one of these drivers that I was given some years back, and wonder if I might look for a mate to use in my C40 horns. I would...

Hey everyone :) If you happened to glance at my previous thread where I mentioned potentially buying a set of PR300's and getting gaskets, well, I...

I was working a bit on the internal dampening material in two passive subs. I was surprised to find what looks like crossover inside. It had a bit of...

Hallo all somtimes you get a good deal, so it change your plans for what you was planing to build and it happens to me. Because I was so lucky...

Hello, Is there any types of adapters that then might permit the use of Speaker Cables terminated with either Spade Lugs or Bananas on a stock 4430...

Hello everyone! I'm planning for building a pair of home hi-fi speaker for rock/pop/jazz kind of music. I own a pair of JBL 4312 for years, I...

Hi guys, I run a couple of 4645B subs Sound is great, punch is amazing but i expected some thing better on the very low frequencies. After a...

I was looking for a study showing the difference between ground plane measurement and (VS) anechoic measurement but I was not able to find anything. ...

This is my first post here and I wanted to participate and contribute back to the community as I have been lurking for a long time when making my...

Bad news for speaker builders i guess... Picked up a news item a couple days ago from a Canadian construction contractors association. Lumber...

How far has reproduced sound quality really advanced in the last 40 yrs? Any thoughts on a fully active 4430/35 with DSP vs M2?

Greetings: I have an early model JBL C40 Harkess with the D130A, 175DLH, and N1200 Crossover. I would like to change the capacitors in the N1200 as...

Hi all, I am trying to purchase a pair of JBL 2453-SL drivers for my 2384 horns. JBL has stopped making them? So I am wondering as the title...

I got a pair of XPL 140s on their way here. Been reading up on them. Are there foam inside the mid range and the tweeter that breaks down after a...

Big sucker. What is it.

Hey there! In my little cinema room i have A couple of 4412 as main / front speakers, drived by a carver amplifier and a couple of 4645B...