This thread is an index to various other threads and references on the early JBL 4-way monitors.A friend just gave me his father's pair of JBL L20T.They look remarkably handsome, and I immediately tested them. Review: JBL L20T, Part I JBL 4406 4312A Letter from NYC (57) 2016 (13) In Part II, the refurbished L20T's were partnered with a T-amp to great effect.Get yourself a HK730 or HK930 or 70's solid state HK Citation Combo like the 11/12 or 17/19. Watts isn't always everything if you are not passing audio signals through the full bandwidth. If at least make sure you are using a full bandwidth amp or receiver. JBL was meant to be driven with Harman Kardon.Technical data Scheme 4 ways, 5 loudspeaker bass-reflex scheme, and a floor type Using unit 2235Hx2, 2202H, 2441, 2308, 2307, 2405H Play band 31.5Hz - 18000Hz Allowable input Bass region: 400W Crown compass: 200W Impedance Bass region: 4ohms Crown compass: 8ohms Cross over frequency 290Hz, 1.2kHz, 10kHz Output sound. JBL my Love - 43 One of the most prestigious speakers, ever.I don't like the sound of the bass on the JBL's. They are OK as home stereo speakers, but I don't think they are an upgrade to the HR824 for the studio. If you are used to the JBL 4312 or 4311, you can make them work for you, but they are really different sounding compared to the Mackie HR824 and most other modern monitors.By 1975, JBL overtook Altec as the monitor of choice for most studios. This speaker, the JBL L-100, (or “Century”) was a massive success and became the biggest-selling hi-fi speaker ever within a few years.

The 4311 was so popular with professionals that JBL introduced a domestic version for the burgeoning home-audio market.It is a perfect drop in fit with no modification needed to the cabinet or speaker wires. JBL 035TIA: Every physical detail (even the screw holes and terminals) have been copied from the original tweeter.

Jbl l100 serial numbers