Jamo E570 Modification Thread

VR3

This most likely will not be a high interest thread but this is a fun little project for me off the beaten path...

Tweeter Network -
Jantzen Crosscap
Jantzen 20awg Inductor, perfect lay
Replace polyswitch with Mills 12w resistor
Supra Rondo 13 awg internal wiring


Midrange Network -
Jantzen Crosscap
Jantzen 20 awg inductor, perfect lay
Supra Rondo 13 awg internal wiring

Woofer network -
ERSE 14 awg perfect lay inductor
Supra Rondo 13 awg internal wiring


Additional Crossover Features -
Point to point wiring
Gloss Black Delrin substrate
Nylon stand offs from enclosure
Gold plated insulated binding post


Driver Modifications -
Basket damping, dual layers - mix of foam and thick vinyl sheet
Drivers will have a seal applied between basket and enclosure
Drivers will be screwed into the cabinet for a greater seal


Enclosure Modifications -
Upper enclosure damping, 3/4" barrier pad
Loosely fill speaker with polyfill

codyc1ark

Hello Trey, I understand what your doing in the last two pictures, but I don't understand why you have chosen the material you have. Cost? The reason I ask is I'm going to be adding "fatmat" to some speakers once weekends get crappy out here. I wonder if you prefer your method over the mat type material. TIA.

VR3

Hmm it came down to a few factors -

1) Cost
2) Flexibility

dynamat would have been an optimum choice but far out weighed the price point of this modification. The mix of the vinyl mat, which is similar to dynamat (but much easier to work with) and the foam tape worked really well on the baskets. They went from a ring to a more pronounced thud.

Fat mat is most likely a superior product by large and far but I am not sure how much more deadness it would provide overall over the vinyl mat... not to mention I can cut the vinyl mat on my table saw without it gumming up!

VR3

I will keep that in mind for the future, but I feel the goal has been obtained so far, the baskets do not ring. The midrange driver basket is greatly reduced. It makes a real nice solid thud."

I have to say though that even $30 is about 80% more than what the method I am using cost and the customer wanted to tackle many issues and this issue was very far down the list...

VR3

I am pretty amazed at how just one of these speakers sound... the bass definitely is hitting lower and the midbass is cleaned up substantially...