Official Blackstaramps Forum

I am looking to make some mods to my ID:Core 10 and, in particular, would like to add the ability to connect to two external speaker cabinets. Does anyone know what the impedance of the internal speakers is?

4 ohm 5W
It is full range speaker for modeling combo, not guitar spekaer.

Thanks. That was what I thought it was.

What about the ID Core 20?

ID:Core 20 Speaker Impedance

4 Ohm 10W

Thanks.

fredberry wrote:Thanks. That was what I thought it was.

So what happen? What was the impedance and did you do the mod? Please share because I NEED to do this also. I have an ID: Core 40 and I need a speaker out!

From looking at that, it appears I could just do a 4 ohm out for each speaker, but before I take this thing apart, I'd like to have all my info. Any info to share folks?

I have yet to do the mod and do not know when if ever I will. However, should I do so in the future it will be output to a single 12" speaker cab.

If you run 2 x 4 ohm speakers the impedance will drop to 2 ohms. I modded my ID15 TVP to be able to run an external speaker. If this is what you are doing and you plan to run a 2x10 or 2x12, make sure both speakers are rated at 8 ohms in your cab and you wire the speakers in parallel as it will drop the speaker rating to 4 ohms. (It's easier than it sounds!). What happens is the impedance will drop to 2 ohms if you have 2 speakers rated at 4 ohms. Solid state power amps are best run with speaker ratings of 4 ohms as they will be a bit louder. If you use a speaker rated at 8 ohms you will get roughly a 3-4 db drop in headroom. (Half as loud as it was before!) So just bear that in mind.