TN1220 amp question

[dmass]

I am currently powering my dual TN1220 setup with a bass optimizer and a Parasound HCA1000 2 channel amp. I have plenty of power however, the Parasound amp does not have any cross over or phase controls.

I would like to consider powering my dual TN1220's with an amp such as the partsexpress amp:

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=300-810

The partsexpress amp is rated 512w into 8 ohm and 1024w into 4 ohm. It is not rated for 2 ohms.

However this amps and other plate amps only offer one channel of amplification. Can I connect both TN1220 tubes to a single channel of amplificiation? I believe that the orginal HSU amp worked that way.

What ohm and power specs do I need to make sure that my amp supports to allow two TN's on one channel of amplification?

How exactly do I wire up the two TN's? Do I run a pair of wires from one tube and also a second pair from the second tube and connect them both up to the +/- posts on the single amp channel?

[Dr_Hsu]

The amplifier will have to be rated for a two ohm load if you want it to drive two TN1220HOs in parallel. Our 500A will be best for this application.

[dmass]

The amplifier will have to be rated for a two ohm load if you want it to drive two TN1220HOs in parallel. Our 500A will be best for this application.

Can I wire the two TN's in series instead of parallel? In series will the TN's present a 8 ohm load to the amp?

[Dr_Hsu]

You can do that if the amp can put out enough power into 8 ohms.

[dmass]

Thank You!

[Ddavidson]

Remember you really need the re-eq features of the bass optimizer to get the best of your TNs. Also its better to over amp and choose an amp with the dynamic headroom, or else you can risk the TN drivers. The TNs handle a lot more power than the specs indicate, by using an amp with an excellent power supply can save you a lot of heartache.

The 500w Hsu amp has such qualities. I've also had good results using the bass optimizer in combination with either a crown K1 or a crown K2.

Ddavidson