BK Double Gem
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Discussion

paultownsend

Original Poster:

3,270 posts

206 months

Tuesday 11th December 2018
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Has anyone tried the Double Gem sub? It’s been out for 6 months or so but reviews are thin on the ground.
Nearly went for an XLS200 for a proposed 2.1 set up (Arcam Solo Mini/Monitor Audio Silver 1’s) but the footprint was a little too large. This looks a great compromise.

paultownsend

Original Poster:

3,270 posts

206 months

Monday 9th September 2019
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Any takers for this?

Red 5

1,093 posts

203 months

Monday 9th September 2019
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BK don’t really like offering their products for comparative reviews!
They do get requests, but never provide product.

Even though they are now 20 year old tech, it was very good tech.
For the money they cost though, they’ll be just fine.

If possible though, I’d stick to their more conventional designs.

ladderino

728 posts

162 months

Wednesday 11th September 2019
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FWIW, I've just upgraded from a normal Gemini to an XLS200 and it was a significant step up - far more than I was expecting.

Always thought the Gemini wasn't doing a huge amount and sounded weird if cranked up. All now been totally solved with the XLS200.

I'd imagine the Double Gem sits somewhere between the two - but clearly I'm guessing so this isn't much help.

paultownsend

Original Poster:

3,270 posts

206 months

Friday 13th September 2019
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How do you find the XLS200 and what size room do you have. Only looked at the double as it could act as a table for the lamp next to the sofa. However if the positioning isn’t correct il be up the pooper. I can just get an XLS200 next to the TV. Will be a 2.1 set up. Want to add more weight to my Arcam Solo mini/Monitor Audio Silver RX1 setup.

ladderino

728 posts

162 months

Saturday 14th September 2019
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Not massive, 4m x 3m. If the room had been bigger would have got a bigger sub!
I made a mock up box to show the size of the XLS400 as that's what I really wanted, but the Chairwoman vetoed it.

TBF though, I think it's just the right amount of punch for the space - I don't have it cranked up all that far and it does a great job tying in as part of a 5.1 Monitor Audio setup.

It's a shame that they only build to order, as I was apprehensive before ordering about whether there'd be any difference, so was definitely relieved when there was.

TX1

2,916 posts

206 months

Sunday 15th September 2019
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Have had an XLS200 for about three years on a 5.1 setup, it replaced a cheap Yamaha sub that went faulty
Again my room is not huge, roughly 18ft by 10ft however it is turned right down so there is plenty more if needed.
Very pleased with it and find it is pretty subtle when its meant to be and punchy when it is needed.
The instructions explain in detail how to fine tune it.

paultownsend

Original Poster:

3,270 posts

206 months

Monday 16th September 2019
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Cheers gents. It’s the only option anyway due to physical size constraints.

paultownsend

Original Poster:

3,270 posts

206 months

Tuesday 8th October 2019
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So I was sat in a bar with my wife last Saturday. G&T in one hand, phone in the other. eBay were offering 10% off. Bought a brand new Audiolab 6000a for £470 and one of the seconds XLS200 for £270.

The audiolab with the digital inputs just sounds superb. Sub will be unboxed this weekend.

OldSkoolRS

7,085 posts

202 months

Wednesday 9th October 2019
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XLS200 is a cracking little sub: I've still got mine about 9 years old now, in use in a second room. To be fair it was a little lost in my main room (replaced it with a Monolith, then got greedy and went a bit OTT with subs paperbag ended up with 4 in my main room, but the XLS200 still does a great job in my conservatory). It's small enough not to upset the management, but big enough to give some rumble when needed. smile

Autopilot

1,333 posts

207 months

Thursday 10th October 2019
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My Kef Kube 2 blew up a while back so was looking at the BK subs. As my living room is fairly large, I finally pulled the trigger last week and ordered an Monolith DF Plus. I'm very excited about it, life without a sub is dull!!!!

paultownsend

Original Poster:

3,270 posts

206 months

Thursday 10th October 2019
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Unboxed it. As most people report there’s nothing wrong with them. I can’t see a single mark for a ‘second’. I didn’t order the correct lead so they sent out another FOC.

The wife is away this weekend so il get a good few days setting it up. I’m going to use the RCA from the Audiolab pre amp output. Do people really see a difference between the high and low level inputs? It’s going to output the full signal then the sub crossover will filter out the high frequencies.

Edited by paultownsend on Thursday 10th October 18:23

paultownsend

Original Poster:

3,270 posts

206 months

Saturday 12th October 2019
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I’m using the high level speaker inputs as the pre-out output from my amp was too low.
Out the box I was unimpressed with the XLS200. I let it run overnight, and now when dialled in it’s incredible. Just watched Terminator Genisys and the sub level sound you miss even from a good pair of stand mount speakers is night and day.

In 2.1 for music, again, it’s night and day. Currently listening to Depeche Mode Live in Berlin, and the bass integrates in nicely. RIP Groove’s Double 99 is simply outrageous but sounds like all the bass is from the stand mounts. For the money, which was £80 of RRP, this little box is simply incredible value.

Edited by paultownsend on Saturday 12th October 10:50

darreni

4,353 posts

293 months

Wednesday 16th October 2019
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What settings are you guys using on the xls200? I also have one but cant seem to get it sounding as i think it should, especially with music.

paultownsend

Original Poster:

3,270 posts

206 months

Wednesday 16th October 2019
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Using high level inputs- filter set at 9pm. Gain set at 11pm. 0 phase.

TX1

2,916 posts

206 months

Wednesday 16th October 2019
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darreni said:
What settings are you guys using on the xls200? I also have one but cant seem to get it sounding as i think it should, especially with music.
Have you adjusted the settings according to the user guide ?
Might also have to experiment and change the location of where it is placed.

Autopilot

1,333 posts

207 months

Thursday 17th October 2019
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TX1 said:
darreni said:
What settings are you guys using on the xls200? I also have one but cant seem to get it sounding as i think it should, especially with music.
Have you adjusted the settings according to the user guide ?
Might also have to experiment and change the location of where it is placed.
I haven't received my Monolith yet, but from the reading I did, it seems a lot of people have been underwhelmed until they've set it up properly. As above, have a read of the guide (I know, I can't believe I'm saying this either!!) and follow it to the letter. As you specifically mentioned music, I assume you're running it through an AV Receiver so may need crossover settings tinkered with, speaker sizes set to small etc.

While I don't have my sub yet, one think I do know is that they need to be set up properly and that takes a while.

I don't really know the difference (apart from size) between a BK and my old KEF, but that one you just switched it on, increased the gain a bit and it would rumble away but from the reading I've done, the BK's require proper setting up.

darreni

4,353 posts

293 months

Thursday 17th October 2019
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I’m kind of restricted with the placement, but I’m happy that’s ok.

I’ll have another play with the settings at the weekend. Is everyone using both hi & low inputs to the sub?


OldSkoolRS

7,085 posts

202 months

Friday 18th October 2019
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Something that doesn't often get mentioned is adjusting the AVR's sub delay (NOTE: This isn't the phase control on the sub itself, leave that at 0 in most cases): I've owned AVRs with Audyssey and now Dirac and they have always benefit from doing this 'sub delay tweak' after running Audyssey/Dirac: Now you can get really anal and use something like REW to measure and adjust more scientifically, but no harm in adjusting in small steps and just listening.

The reason is that most room eq doesn't measure the sub and speakers together...they are all measured individually. Sometimes you get slight cancellation effects at certain frequencies around the crossover frequency. On my current AVR adding an extra 3mS delay removes a big dip at around 90Hz and you can really hear the difference flicking between the 'as set' and '+3mS' setting while playing music. Without the tweak my system bass sounds a bit lacking, which is ridiculous seeing as I have 4 subs, so it really can make a difference.

I read this week that even the Lyngdorf systems (that supposedly measure subs and speakers combined) still benefit from tweaking the sub delay, so it's not restricted to systems owned by us mere mortals...

paultownsend

Original Poster:

3,270 posts

206 months

Monday 21st October 2019
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darreni said:
Is everyone using both hi & low inputs to the sub?
I have read somewhere that only one input is meant to be used. Not both together. Either or.

I am running 2.1 high level from speaker terminals. I can see me running two gain levels, one for music, one for movies.