polk rti 150

88forthecup

Would the in wall rc55i inwall speakers match well with my rti 150 fronts and csi3 center? Or, would the bipole speakers be a better choice?

redwine

I’m back no more painfully highs from my 150’s. I was running pitiful small wires to the 150’s 16g I’m guessing. Biwired the woofers with quality 12g way better bass, but muddy mid and highs. Added a Rotel 1090 amp 380x2 @8 to drive the 150’s and ran 12g to the mid and tweeter…this is the way the 150’s were designed to sound. Wish I had run 12g wires to the mid and tweeter prior to adding the Rotel amp to A/B but no. I also got an Adcom 5800 amp 250x2 @8 (ebay biding sickness) that I will A/B next week.

One question what does the tweeter sound like when it’s fried or hurt? On some pop music (Madonna) played at loud levels 108db it sounds like the tweets lose the signal, or just can’t duplicate it? It could just be the recording I guess. Any way to test?

Tour2ma

Chances are if you have to ask, they are OK. But if you think there may be an issue...

Sometimes there's a discoloration of the dome or sign of fluid leakage.

Since you're bi-wired, try removing the bass wire feed and just listen to the tweets. If they are hurting, it should be obvious from the sound even at moderate volume.

Appears you've made some progress with your rig and yes, that disease is something I think we all go through.

Do consider easing off the volume a bit. Music is something to enjoy for the long haul and at 108 dB the haul will get shorter pretty quick.

redwine

Thanks for the info. Sounds like the tweets may be ok. The 108db was a test of the new amp this was at -5 the AVR master. The 1090 has a S/N of 125, I need to check the 150's.

I think THX reference is 115db

disneyjoe7

I maybe wrong but I think THX was reference at 85db and peaks are 100+ something.

Tour2ma

Per the good Doctor from an old thread...

FYI - Reference Level is defined by Dolby Labs as 105 dB bass peaks from any surround channel and 115 dB bass peaks from the LFE channel (since the LFE channel is automatically boosted 10 dB by your DD/DTS processor).

Snoopdog

Originally posted by redwine
Added a Rotel 1090 amp 380x2 @8 to drive the 150’s and ran 12g to the mid and tweeter…this is the way the 150’s were designed to sound.

So you are running 2 sets of 12ga from the 1090 to each rti150?
What's that supposed to do for you?

I run one set of 12ga to each spkr from my Crest 2600. My run is only 12 feet.

Believe me though. The 150s will take everything that Rotel can give 'em and then some. You'll be able to get the amp to clip, so be careful with the volume. That's one nice thing about most pro amps, they have LEDs that signal clipping. The Crest line has a limiter that will reduce the gain when it senses clipping to protect skprs.

But man those 150s R O C K!

redwine

The Rotel 1090 has 2 sets of wire terminal to biwire and the 150’s can be biwired so why not? My 12g wire is from RS $1 a foot looks preaty good but now I am on to SignalCable wires and interconnects think I will do my whole setup. Help the sickness is over taking me:D

disneyjoe7

Question,

With the RTi150's being by amp'd and the ratings are 50-500 watts. Can I have consider by amping the RTi150 with 4x200 for 400 per speaker or 200 watts low & 200 watts mid/high?

My thinking is no because this is like the RT600i for 20-150watts so 200 watts is too much for the mid/highs on the RTi150's right?

And with this thinking best to use a large Amp 250 or better with these speakers?

Tour2ma

joe,
It's ok to use an amp that exceeds the recommended power for a speaker, as long as you are sensible in your listening.

In your example paired 200 wpc in a bi-amp arrangement would be better. Whereas a single, 250 wpc trying to do it all would be subject to clipping and harming the tweeters, if the 200 wpc amp pulling the bass duty clipped the tweeters are safe.

One thought... Bi-amping is usualy thought of as equal power to both halves of the speaker, but ain't necessarily so. In the 150's a 250 wpc for bass duties and a 150 for the mid/ highs, might be a better arrangement.

disneyjoe7

Tour,

Thanks and really this was what I was thinking.

>One thought... Bi-amping is usualy thought of as equal power to both halves of the speaker, but ain't necessarily so. In the 150's a 250 wpc for bass duties and a 150 for the mid/ highs, might be a better arrangement.<

But I see that redwine has a 380 watt amp by wired to the 150's.
Seem like a lot but again the 150's are rated to 500 watts.

stevew14

Joe,

When I had my 150s, I was using twin 250 wpc amps to biamp them. Never had a problem and it sounded fantastic. Mine were Carver, and I configured them so each speaker had it's own amp, using one channel for the woofers and the other for the mid/highs, and repeating this with the other amp/speaker. I believe this is referred to as vertical bi amping. I like to think I am getting better channel seperation this way, although I think opinions vary in this regard. Anybody else have any thoughts about it? I would be interested to hear them.

If you have two of the same amp (200-250 wpc is probably sufficient), you might consider this configuration. However, as Tour mentioned, you could probably use a bit less power for the mid/highs, and bi amp them the other way (horizontal) if you wanted to, and get away with it as well.

Just my thoughts.......either way you go, I think you'll notice an improvement.

Good luck!

Tour2ma

steve,
Funny, but I've never thought about vertical bi-amping in terms of channel separation. Can't hurt, could help is first reaction. With Carver amps it makes a lot of sense to vertically bi-amp, since most of them "share" a portion of the power reserve between channels.

Instead of a horizontal rig where one amp ends up fighting over which channel gets the oomph for the bass track, in the vertical rig it's pretty much on-call for the woofers.

Since many Carvers also are bridgable, twin bridged amps is an option as well. Ever tried this option?

stevew14

Tour,
No, although I have thought about it. I have the TFM 35x and I know they are bridgeable for 700 wpc at 8 ohms. If I were to try this, would it still make sense to bi-wire since I already have the two runs of wire. If you connect to the two positive terminals on the amp, does it matter which one goes to the pos or neg at the speaker?

Do you think the extra power output in bridged would be better than the low and mid/high having thier own channel?

I hope I'm not throwing this too far off course, although I think these are also points Joe might consider as well.

Thanks for the feedback. Let me know what you think

steve

Tour2ma

There are proponents both ways... Try it and see (you're not running SDA's correct?)

As for the wiring, consult your manual. Carvers vary in their bridged set ups.