Two Avalanche 15 wiring

[Victor]

I am finally at the last stages of my version of ThomasW’s Tubezilla with 2 Avalanche 15 drivers and 180 liters of total tube volume.

I am wondering what is the recommended way to wire them?

I intend to have only one set of binding posts. Each driver has 2 terminals that measure about 2 Ohm each. My amplifier of choice is Behringer EP2500.

Should I wire the terminals of each driver in series and then parallel two drivers? Or should I series everything and get 8 Ohm total? The EP2500 will do 1500Watts into 8 Ohm, which seems to be fine for 2 Avalanches.

Anyway, any suggestions are appreciated.

Victor

[ThomasW]

Sort of limiting with the choice of only a single binding post. My preference would be each driver as a 4 ohm load hooked to one channel of the amp running in stereo.

Behringer doesn't give a bridged rating for 2 ohm operation. I take that as a not so subtle hint that bridged 2 ohm operation isn't recommended.

So with the single post your options are limited to 8 ohms.

[dynamowhum]

Hey Victor. I have 2 atlas 15"s and they have 2 ohm and 4 ohm terminals. I would imagine yours are the same. I called up ascendant audio to find out which was which. It has been to long now for me to remember which. Hey as a helpful hint I marked my IB inside so I could tell them apart later.

[ThomasW]

Hey Victor. I have 2 atlas 15"s and they have 2 ohm and 4 ohm terminals. I would imagine yours are the same.

The Atlas and Ave VC's are different. The Aves have 2-2ohm VC's

[dynamowhum]

ah live and learn thanks for keeping me straight

[dynamowhum]

Should be able to go in series with each coil though for 4X2 ohms, right? I know Chris told me at ascendant that I could to that with my 2 and 4 ohm coils.

[Victor]

Thanks everyone for your responses. I guess I will have to go with series connection for a total of 8 Ohm nominal impedance.

ThomasW, what would be the advantage of using 2 sets of input terminals for the true stereo operation? The EP2500 is rated to deliver 750W into 4 Ohm in stereo mode or it can do1500 Watts into 8 Ohm in bridge mode, - it seems to me that the two regimes of operations are identical, - are they?

Another question, - my concern when I was thinking about wiring was this, - assuming that the parameters of both Avalanche drivers are not identical, - they are close but still are not the same, - would a particular way of wiring both drivers minimize the adverse effects of the dissimilarity between the drivers?

Regards,
Victor

[Tommythecat]

4x2ohms? Im not sure what that is. What you can do with the atlas coils, by running them in series, is achieve a 6ohm load (as opposed to 4ohm).

With the 2 Ava's, he's limited to .5/2/8 ohms.

[wackii]

Letz me ease ur pain Vitor, sell me one of ur avalanche so I can run the dual LLT sonotube hehehe Drop us some pics.

Al,

[Tommythecat]

Victor, the difference in parameters should be negligible (unless something is quite wrong with one of them).

[Victor]

...Pictures are coming, once I am done!

I guess I will wire all coils and drivers in series for 8 Ohm load. I see that there is a Samson S2000 amp that can do a 2000 Watts bridged into 8 Ohms, - would that be better then the EP2500?

I think I can get this S2000 for about $550. The power increase relative to EP2500 is negligible, but still it is something, - does anyone have any experience with Samson products?

Victor

[dynamowhum]

yeah Tommycat I saw the first posters 8 Ohm requirement and was thinking out loud. Or should saying keyboarding out loud. Rereading his first post I realize now he already mentioned the series 8 ohm deal. Sorry.

[peterS]

fyi the atlas's are variable qts.... more to it than a vc resistance