Crossover S2600

[MatthiasA]

has anybody pictures of the NS2600 crossover
greetings

[Earl K]

Hmmmm,

Not actual pictures, but here's a schematic for the S2600 crossover.

<> Earl K

[MatthiasA]

thank you
can you say me
how much voltage must the capacitors have ?

greetings

[Earl K]

Hi


how much voltage must the capacitors have ?

Typically, JBL uses 100v DC capacitors.

Now, don't ask me about the sonic differences in caps between , 100v , 250v, 400v, & 600v, because I just haven't had the time or money for such exploration .

regards <. Earl K

[Peterr]

Hi Mathias,

Would it be an option for you just to buy a complete crossover. They are available directly from JBL, partsno 311911-001 costing under €100 at the current exangerate.

http://www.jbl.com/home/product_support/jblparts.asp?prodId=S2600L

[MatthiasA]

Hello

i bought monday the me120hs woofer by my german jbl dealer
the price for the grill in europe are 250euros
and the crossover are about 150euros
2426h are not for sale in germany
but i will ask a P.A. JBL Dealer

now ive listed the parts for the crossover
with 400v dc caps fron "Intertechnik"
it will be about 100euros the whole crossover
with very good caps and coils
i think if the caps have 100v dc
the crossover will be much cheeper !!
thank you !

[MatthiasA]

can you say me the diameter of the wire used in the 4 coils
is the L1 2,2mh and the L3 2,4mh a special coil ?
because there is a line in the schematic !
which resistance have the difference coils ?
greetings !

[Earl K]

Hi

Sorry, I don't know the DCR ( resistance ) of the stock coils ( inductors ).

- Reading the schematic; If there's a "line" through the coil symbol , it indicates a "ferrite" core type of coil. You can always use "air-core" types at a greater expense.

Keep the DCR of L1 ( 2.2mh ) to a very low value. Either a 14ga or 12ga wire , "air-core" should be in the right "ball-park" .

L2 ( 1.7mh ) is part of a LCR notch-filter. The overall value of "R" is likely in the range of 6 to 8 ohms. You won't be able to find a "specialty" coil like this, so, that means buying the "highest" value DCR that you can find and then adding a resistor to the LCR circuit to make up the difference . You are going to have to "play" with resistor values to get the best ( your preference ) notch .

L3 ( 2.4mh ) similar comments to the L1 type

L4 ( .16mh ) I'd try 18ga to 22ga air-cores here and be prepared to alter the values of R5 and R6 to compensate for changes in the total resistance .

regards <. Earl K

[MatthiasA]

sorry iam from germany what means the expression "Either a 14ga or 12ga wire "

14ga ?

is this the diameter of the wire ?

for example in germany from 0,1millimeter to 3 millimeters for example

[MatthiasA]

the L2

i didnt find some suitable coil because
the L2 1,8mh im my list has no resistance
where can i buy such a coil with a high resistance of 6-8 ohms ?

i found coiöls with hi resistance but there no available in 1,7 or 1,8 mh ?

[Earl K]

Hi

20 awg (ga) = .80 mm Ø ( diameter )
18 awg = 1.02 mm Ø
16 awg = 1.29 mm Ø
14 awg = 1.63 mm Ø
12 awg = 2.05 mm Ø
10 awg = 2.59 mm Ø

regards <. Earl K


ps ; ( font reality-check , on my computer screen, a "Ø" is a circle with a diagonal line through it ) . If you see something different , it means your computer doesn't "recognize" the originating font )

[Earl K]

where can i buy such a coil with a high resistance of 6-8 ohms ?

- You probably can't.
- Just buy the highest resistance available to you and then add different series resistors to alter the "Q" of the notch .

< Earl K

[MatthiasA]

oh thank you fro example 1 ohm coil + 7 ohm resistor in series
for 8 ohm ?

[MatthiasA]

can i use a 2,7 for L3 because 2,4 are not available ?
greetings

[Earl K]

Hi


for example; 1 ohm coil + 7 ohm resistor in series for ( equals a ) 8 ohm ( coil ) ?

Yes, that's what I meant .


can i use a 2,7 for L3 because 2,4 are not available ?

2.4 mh is a standard value in the "Solen" catalogue .
2.5 mh is a standard value for "ERSE" coils from "Parts-Express ( USA ) .

- I think you need to check offerings from other parts-suppliers .

- You can always create a 2.4 from a 2.7mh air-core, by unwinding some of the wire. You need a way to measure "inductance".

- Some parts sellers will "custom" wind to specific values, for an additional fee .

- I wouldn't use a 2.7mh in place of a 2.4mh without exhausting all the other solutions first. Off-hand, I can't tell you the effect of that larger coil (2.7mh ) , except it will lower the Fc ( crossover-point ) of the second pole in that "Hi-pass" area of the crossover. How much lower? I won't speculate .

Earl K

[MatthiasA]

now ive a 0,8 r coil ! with a ferrit
no i turn a resistance with about 6,8r 20watt behind the coil ? in series ?
greetings

is the 2,7mh instead of the 2,4 ok ?