SVS PCi plate amp for IB?

[ThomasW]

If you want to have a discussion about digital start a new thread....

[chrisbee]

Thomas

I now have my shiny new Behringer CX2310 crossover at home and the balanced cables are on their way.

Did you use the "high band" and "low band" for your speakers and IB respectively on the Behringer?

I have just discovered there is also a balanced XLR "Subwoofer-out" connection on the CX2310.

I'm not sure whether I should use this Subwoofer output in preference to "Low band".

Thanks

[ThomasW]

I'm using all the outputs since I need a 3-way XO.

If you're using it only for the sub I'd use it as a stereo 2-way as opposed to the mono-sub. Doing that gives you the highest level of adjusment regarding XO point and the relative levels between the hi/low outputs.

[chrisbee]

Thanks

That confirms my own thoughts.

Regards
Chrisbee

[chrisbee]

It's getting very close to decision time about amps. I hope this will be of general interest rather than specific to my own IB.

I can "borrow" the SVS Bash amp from its cylinder and feed it line level from the CX2310 (XLR to RCA/phono) with the Bash internal filters bypassed.

Then wire the 4 x AE IB15s in series-parallel for 4 ohms. 350 free watts without even leaving the house.
But I can't then sell the SVS even if I wanted to.

Or... I can go to town and buy a Behringer EP1500 (or even a 2500) and connect that to the CX2310. But which?

This would require an informed decision about wiring my drivers.

2 x 4 Ohms in series per channel for 8ohms?

2 x 4 Ohms in parallel for 2 Ohms?

Or bridged into 4 Ohms series-parallel?

I'd value some advice.

[ThomasW]

On the old forum John J recommended 200 watts/driver. That seems a bit high to me. I think the EP1500 would be more than adequte for the task..

Which version do you have dual 2ohm or dual 4 ohm?

[ryans]

8 ohm stereo load would be the worry-free solution, if it gives you enough power. 260W per channel from the EP1500 would give you 130W per woofer. Sounds like enough to me.

2 ohm stereo load and 4 ohm mono-bridged load put essentially the same load on the amplifier. There's little difference between them.

[chrisbee]

Thanks

I have only been told that these AE IB15s are 4 Ohm. I had no idea they were likely to be dual coil.

Is there any real-world difference between choosing parallel or series wired drivers in an IB?

Behringer claims their amps are 2 Ohms stable. Resistance in series with drivers is supposed to be avoided as it reduces the control available from the amplifier. But is this the same thing as having two (or more) drivers in series?

[brady]

chrisbee, I believe the AEIB 15s were 4ohm and 8 ohm single coil. I asked John that exact same question series or parallel, he said it makes no difference and feedback myths were bunk.

[brady]

MY mistake I see the new ones are dual 2 or 4 ohm.

[ThomasW]

It's been quite sometime since I posted about the AE IB drivers so I forgot they were SVC. I also moderate and answer tons of subwoofer questions on other forums, so occasionally I space stuff out...

If possible wire the drivers in series or a series/parallel combination. This recommendation has nothing to do with feedback, it relates to the damping.

[chrisbee]

Thanks guys.

2 x 4 ohms in series for 8 ohms in each channel of the Behringer 1500 sounds like the best option then.

Given my incredible room gain I seriously doubt I'll ever find the IB wanting.