Originally Posted by delfincek
Here I'm posting a link to the gentleman that reviewed, tested and combined Stradas with TR-3 sub and ended in 60Hz. Result is posted on page 2 of the review.
From my practice it pretty much depends also on the room acoustic and a personal taste. What is important to me when integrating sub with main speakers is that I try to melt it with the mains and I take good care not to overemphasize it.
I just read this review concerning the Strada/TR-3D
combo and in it the reviewer states:"I drove the TR-3 using the RCA inputs from the second output of my preamp. I did not use the high pass crossovers""In addition, a high pass output is there for use with satellites that need a high pass crossover. "
The folks at Anthony Gallo both in the USA and in England will tell you that using the RCA inputs from a preamp is not the best or optimal way to deploy the Strada/TR-3D in a 2.1 setup. The RCA inputs are best used from an HT receiver.
Here are two emails concerning this topic from the folks at Anthony Gallo in England and in the U.S.
In this email (Gallo England) I asked about setting up the TR-3D using interconnects from my pre amp.
If your amplifier has both Left and Right channel Pre-Out's then run both. Alternatively, if there is only one single Pre-Out the just run a single interconnect - however, in this method you can boost the bass by using a Y-Splittwer cable, thus splitting the single Pre-Out into both Left and Right inputs.
The main problem with this setup is when using a Stereo amplifier, you are sending a full range signal to the Strada's, and unless the Amplifier has bass control, you are also sending a full range signal to the subwoofer. The TR3's crossover network is only active on the High Level circuit. The Low level input is more designed for a Multi-Channel AV amplifier, where bass frequency control is taken care of by the AV Amplifier.
In a 2.1 setup, I would actually recommend a different approach to wiring up the Strada's and TR3 Subwoofer. This involves running speaker cables to the subwoofer and then from the subwoofer onto the Strada's. This will make best use of the crossover and give the best control over the setup. It ensures that any frequencies above the crossover level set on the TR3 are sent to the Strada's and anything below is played by the TR3.
- From your Stereo amplifier, run a set of speaker cables to the High Level Input of the subwoofer, taking care to connect the speaker cables to the correct terminals.
- The run a second set of speaker cables from the subwoofers High Level Output to the Strada's.
- On the subwoofer, set the Level to 50%, and crossover to around 70-90Hz.
- Phase should be at 0º if the sub is on the same plane as the Strada's, or 180º if it's behind the listening position.
- Once music is playing use your ears to accurately adjust the crossover and level controls to give the best sound.
Here is the email recommendation from Gallo U.S.A.
You can connect the TR-3d to your system 3 ways.
1. High Level (speaker wire) from your L & R main on your amp to the high level input on the sub. And connect the speakers to the L & R main of your amp.
2. High Level (speaker wire) from your L & R main on your amp to the high level input on the sub, then from the high level output to the speakers.
3. Line level - From your pre-amp to the line in L&R on the sub.
Option 1 and 2 are the best. Not sure you are going to hear the difference between them, but here is a section from the TR-3d manual that goes over this subject. Please review and contact me with any further questions. FYI - we are currently out of TR-3d's, we have a shipment of that will arrive near the end of the month.
High-Level Input From L/R Main Speaker Terminals of Receiver or Amplifier: When your TR1/3 Subwoofer is connected with the High Level (speaker) connections, you have the option of running the main speakers "full range" or rolling off the deep bass by using the high-pass (approximately 100Hz) filter built into these connections on the subwoofer. To hook up your TR1/3 subwoofer via the speaker-level connections simply connect a high quality speaker cable from the amplifier's Right Channel Outputs to the Right Channel High-Level Input Terminals on the subwoofer, repeating this process for the Left Channel. Be absolutely sure when making these connections that Positive goes to Positive (Red/+) and negative goes to Negative (Black/-).
The speakers can now be connected in one of two ways. If you wish to utilize the high-pass filter built into the subwoofer and remove the deep bass from the speakers, simply connect your speakers to the High-Level Out Terminals on the subwoofer as shown.(Figure#1). This connection method will provide a smoothly contoured roll-off of the low frequencies going to the speakers, starting at about 100Hz.
If you wish to run your main speakers full range with no low frequency roll-off, hook them directly to the main speaker output terminals or your receiver or amplifier as in any normal audio system. This is recommended ONLY if your speakers are truly full-range, with significant bass response below 50HZ. If not, you may find that you are overdriving the speakers. You will be able to play your system louder without overdriving the speakers by using the subwoofer's built-in high-level crossover.
All these speaker level connections should be made using quality speaker wire and carefully observing polarity ensuring Positive goes to Positive (Red/+) and Negative goes to Negative (Black/-). It is essential that all speaker level connections be in PHASE meaning: "+" to "+" and "-" to "-". This ensures absolute phase throughout your system. If you experience a great lack of bass, it is likely that one speaker is out of phase (+ and - reversed) with the other, either at the amplifier speaker terminals, at the subwoofer High Level Terminals or on the main speakers themselves.
I have run the Stradas/TR-3D combo both from interconnects and using speaker cables from my amp to the Hi Level inputs then speaker cables from Hi Level out to the Stradas and have found the using the speaker cable method to be superior. Deploying the Stradas in this way removes the stress of a full range load and the presentation improves in many ways. The sound becomes even more spacious and the top end is effortless. I have not experienced any loss in sonics by using the crossover in the TR-3D in any of the tracks I listen to either commercial tracks or of my own compositions which I also mix.Edited by Xchair - 9/13/12 at 12:37pm