Sub matching...REL with Klipsh

When did they stop selling the Q Series?

I use 2 older series (Q series, Q108MKII and Q150e) and they blend superbly with my Klipsch Heresy speakers. Note that even with the supposed 99db efficiency of the Klipsch main speakers there is a LOT of headroom left in both subs even with my relatively low output (maybe 15wpc) single ended tube power amp...the level of both subs isn't anywhere near being maxed out. I won't be buying any new RELs however as they refuse to service mine as being too old...luckily they don't need any service so far but still...REL gets my permanent boycott for that...

If you can go  with two T7i's then by all means. One is never enough, even in a phone booth. Rel's instructions on how to set up their subwoofers is designed purely to eliminate expense and make it easy on the inexperienced and that is fine but for optimum performance there are better ways to do it. 

 I will be going with REL.

 Why?
You don't have a problem yet.

I respect RELs honesty with your speakers. Shows they are not just wheeling and dealing. 
I do remember watching a video about that upgrade to the rp600ms. I'm not 2 confident in my electrical tinkering skills so I'm going to have to watch it a few more times and see if it's something I'm comfortable doing. 

The REL T7i should be a great match for a room your size. They should run pretty flat to around 30hz in that space. Your speakers are quite efficient, but the T7i should have enough gain to match them. Your speakers by themselves should be able to reach down to around 50hz if positioned properly in that room. 

I emailed them once and they said pair of t5is. I emailed them again a couple weeks later and another person suggested t7i. So
..I sent a 3rd email recently telling about the first 2 emails and asked for a tie breaker. They don’t have klipsh as an option on their subfinder so that’s why I had to email. In regards to klipsh rp600m...ive had people tell me the t5i will be a waste of money and to get t7i and I had people tell me the t7i will be a waste and that t5is will intergrate better. I think with the room size I have either or will be ok. I do understand the t5is are limited but I dont think I’ll be upgrading my bookshelves anytime soon. If I do upgrade things will probably be set up in a totally different space where maybe a t9i or another brand even would be a better fit.  If your interested I can let you know what they say for my tiebreaker.

For some added information to add directly from REL, abate not quite relevant for your price range but could be a consideration for others. Also i don’t know the efficiency of the RP600’s but if they are getting up there this could pertain to you as well. oh You should check out GR Research for their RP600 upgrades.

I have the LaScalas’s and wrote REL a few weeks ago about a sub recommendation. below is what they replied.

"Jan 5, 2021, 1:21 PM PST

Glen,

Thank you for reaching out to us for our recommendation.

The LaScala’s are a really difficult match with their 105db efficiency, it’s hard to get enough output to blend in seamlessly. Possibly a pair of our 212/SX would do the trick, but not very confident to be honest.

I’d have the team at Sound Hounds out for a visit and get their thoughts.

If you’d like you can give me a ring and we can discuss further.

Best,

Paul Magee
Western Regional Sales Manager
REL Acoustics"

*Sound Hounds is my local REL dealer.

I’ve since moved from normal sub considerations to alternatives sub’s like horn loaded alternative (too big for my space) and open baffle designs with multiple drivers driven by a servo system.

GR Research makes some very reasonably priced kits for example of this type. There’s some horn loaded subs based off the "horn table sub" (google it for more info)

Anyway if this isn’t helpful for you I hope it is for others.

cheers

glen


oh PS, the REL sub finder doesn't have any Klipsch speakers in it. 

If you go to RELs website they have a sub finder section. Put your speakers in, room size etc. would be interesting to see what it says. I will say those “little” T series subs hit pretty dang hard for their size.

If you can afford t7i go for it. It will be more future proof if you move your system to a bigger room or upgrade speakers.