- Item: Custom Monitors
- Type: TAD/JBL
- Posted: 20 January 2011
- Builder: JSF
- Country: United States
- Comments: 4
TAD/JBL Custom Monitors
Presented here is a pair of custom studio monitors based around a pair of TAD TD-4003 compression drivers and solid resin clones of TAD's TH-4003 horns. In a vertical array, I have mixed the 15" woofers: JBL 2234H on top and JBL 2235H on the bottom. (These drivers are identical except that the 2235H includes a mass control ring that lowers sensitivity but increases low frequency reach.) Each woofer operates in its own rear-ported chamber (5 cu. ft. each) and is separated from the other by a slanted, internal double-walled panel.
The boxes themselves are completely double-walled with an exterior 3/4" birch plywood panel each glued to an interior panel of 3/4" MDF. The veneer is 22.2 mil rosewood. The front baffles have an extra layer of 1/2" plywood and are 2" thick. The woofers are countersunk 1/2" in order to be flush mounted. The interior is filled with Sonex foam panels. Connectors are five-way, top-line WBT.
The TAD horn and upper JBL are connected to a TAD TN-4 crossover. I am running these full range with an Air Tight ATM-2 amplifier. On top, I've added a pair of Tonian TL-R1 ribbon tweeters, also drive by the Air Tight. These have built-in high pass crossovers set to 15kHz. They add a wee bit of "sparkle" to the system. The deeper reaching 2235H on the bottom is hooked directly to a Krell KSA 300s class A power amp. It is fed by the low pass section of a stereo electronic crossover using a 100Hz hinge point. So, this is essentially a two-way system augmented at the extremes.
It is full-range in every sense of the term and highly resolving. Thanks for looking!
The boxes themselves are completely double-walled with an exterior 3/4" birch plywood panel each glued to an interior panel of 3/4" MDF. The veneer is 22.2 mil rosewood. The front baffles have an extra layer of 1/2" plywood and are 2" thick. The woofers are countersunk 1/2" in order to be flush mounted. The interior is filled with Sonex foam panels. Connectors are five-way, top-line WBT.
The TAD horn and upper JBL are connected to a TAD TN-4 crossover. I am running these full range with an Air Tight ATM-2 amplifier. On top, I've added a pair of Tonian TL-R1 ribbon tweeters, also drive by the Air Tight. These have built-in high pass crossovers set to 15kHz. They add a wee bit of "sparkle" to the system. The deeper reaching 2235H on the bottom is hooked directly to a Krell KSA 300s class A power amp. It is fed by the low pass section of a stereo electronic crossover using a 100Hz hinge point. So, this is essentially a two-way system augmented at the extremes.
It is full-range in every sense of the term and highly resolving. Thanks for looking!
Comments
- mixmaster48
- 1 April 2011 at 12:04AM
- I need something like this for my studio.304-697-7779
victortproductions@yahoo.com
- ivica
- 17 December 2012 at 02:23AM
- Very nice project, but some measurements data say: frequency response, polar response , distortion if possible would give use much, much more information about the whole project.
regards
Ivica
- vikingislandman5
- 19 April 2021 at 06:07PM
- this is what i want to build! any help would be greatly appreciated... vikingislandman5@gmail.com
- pr1324
- 18 December 2022 at 05:13AM
- Fantastic project. Too bad TAD 4003 are now unobtanium, I bet they sound amazing.
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