Power Supply/Crossover Question

[elgato]

The attached pics are from a Tandberg powered speaker. The amp is a separate housing from the speaker and directly connects to the speaker via the 10 connectors along the edge.

The speaker housing is sealed and has two Seas drivers and a tweeter.

Any idea why they would use 10 connectors to connect the speaker to the amp?

Can you tell if a crossover for the speaker is built into this amp?

Thanks for your time.

[ben7]

Re: Power Supply/Crossover Question

Judging by how many connectors go to the speaker itself, I'd say the crossover is before the amplifiers. The crossover after the amplifiers, but before the speakers, is quite inefficient, and can reduce sound quality.

Also, because there is a texas instruments DSP chip on there, that sugguests the same thing I said above.

[elgato]

Re: Power Supply/Crossover Question

Thanks for the response.
Actually only six of the connectors go into the speaker housing.
From what you can see, is there a crossover built into this board?

My reason for asking is that I would just like to get rid of this amp and use the speaker as passive. You would not expect to find a crossover in the speaker housing?

Thanks again.

[Khron]

Re: Power Supply/Crossover Question

Two Seas drivers plus a tweeter - coincidence or not, those happen to have exactly six terminals between them. Is this an MTM arrangement (mid-tweeter-mid)?

Seeing as there are 5 chip-amps, i'm gonna hazard a guess and say they're two pairs, each bridged for each mid-woofer, and one chip-amp for the tweeter

So... No, the odds of you finding a passive crossover inside the speakers are rapidly approaching nil, i'm afraid.

[budm]

Re: Power Supply/Crossover Question

More likely to be tri-amp powered speaker set up, Amplifier per speaker, and it uses active electronics cross-over to separate audio frequency bands (LO, MID, HI) to feed each speaker's amplifier. model number?

[elgato]

Re: Power Supply/Crossover Question

Thanks for taking the time to look at it.
Its a Tandberg TTC1-02 Amp/Speaker combination from a video conferencing system.
Seas are great drivers and it looked like it would make a nice center. Pretty sophisticated design for a voice range speaker. Now I see why they charge so much for this stuff. Not sure what the tweeter is.

[budm]

Re: Power Supply/Crossover Question

Tweeter is the high frequency speaker, sitting between the two speakers as you can see in the picture. Only $20?
http://www.ebay.com/itm/Tandberg-Dig...item58a39498e0

[elgato]

Re: Power Supply/Crossover Question

I meant that I don't know the brand and model of the tweeter.
I am not surprised that they are $20. I wouldn't pay the $20 plus $38 shipping though.
This Tandberg Conferencing stuff was crazy expensive new. They wanted $328.00 for a wheel for one of the carts.

[Khron]

Re: Power Supply/Crossover Question

What size woofers are those, 5"? That would make them L15RLY/P's, which are worth quite a bit more than 20$ on their own, each

(Madisound seem to have'em for 88$ a pop: http://www.madisoundspeakerstore.com...m-cone-woofer/ )

I've had a pair of those drivers in my closet for... way too many years already, "still" waiting for some "free funds" to get some proper boxes done for'em

[ben7]

Re: Power Supply/Crossover Question

Is this amp just for one speaker, or is it multi-speaker (AKA, stereo, right and left channels, etc...)?

[elgato]

Re: Power Supply/Crossover Question

Old post but did you ever do anything with this? I have had one in the storage room for a while and just pulled it out again.

Looks like really high quality 5 1/2 drivers.
Not sure about the tweeter.

Connected an IPhone to the audio in and it sounded pretty good.

Some amplifier hum at idle.

It has a "differential in" 3 pin that looks like a balanced connector and a stereo out with the same.

It looks like it should be useful, just not sure how.