Anyone tried the new Volt BM165 6.5 inch midwoofer ?
Volt Loudspeakers | BM165.1 (6.5″)
Looks pretty impressive.
Volt Loudspeakers | BM165.1 (6.5″)
Looks pretty impressive.
They look like the business and supposedly the whole line is solid. I just got an account with them as an OEM/distributor and will be placing my first order once I finalize quantities and models. Picking up the 6.5s and the 3in domes in the first order for sure and once I get them I can test them out and report back. I would ask if you would like a pair but you have local distributors that can assist. We do not have any sources in the US and conversion from USD to Sterling/Pound plus shipping and then shipping overseas doesn't make this model competitive for anything other than local (US) sales.
I've just ordered a pair from Falcon Acoustics in the UK too, as they have a promotion on at the moment. Volt have a reputation for very good quality drivers, but they are a bit expensive. The double spider is one of their trademarks. Xmax spec is typically very conservative, given the Xmech is +/-12mm.
I have used Volt drivers extensively and are very good.
Have used the BM220.8 in an awesome 2 way monitor crossed over at 2.2k and it remains very composed even when pushed hard. When crossed over to a capable tweeter it sounds punchy and incredibly controlled.
I imagine the 6.5" will have no trouble at 2.2 - 2.5K
They are also as tough as donkey's and can handle gobs of abuse.
Have used the BM220.8 in an awesome 2 way monitor crossed over at 2.2k and it remains very composed even when pushed hard. When crossed over to a capable tweeter it sounds punchy and incredibly controlled.
I imagine the 6.5" will have no trouble at 2.2 - 2.5K
They are also as tough as donkey's and can handle gobs of abuse.
That's great to hear.
I've put the 6.5 inch TS parameters into the MJK ported box worksheet, and it tunes up nicely as an MLTL of around 22 litres.
That driver does not make much sense. A lot of things are contradictory, the parameters suggest it to be used in a very small sat BR enclosure or horn, yet they got a for a mid-bass driver huge excursion of +/-6,3mm and a double spider (!!) which strongly hint the use as a subwoofer. Such an excursion is completely useless for a bass-mid driver since the intermodulation distortion will be humongous.
22 litres tuned to 35Hz, as mentioned it is an incredible drive unit that I think is often overlooked due to the old school design. No de modulating ring etc.
The best car in the world can have all the necessary specs, but if it handles like sh1t what's the point of buying it. These drivers just do the job well and are priced accordingly. By the way Quested use a variant of the Volt 220.8
in their active nearfield monitors and is an undeniably great speaker.
It is often overlooked because it doesn't follow anything consistently. It's not outstanding in any regard, it got a lot of comprimises. Here's the simulation in 22l and 35Hz tuning:
I'm sorry but that's not very convincing for the price. The problem is, they want to do everything and in the end they got a driver that's not very good at anything.
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Thanks for this information. A double spider only gives advantages at big excursions. Big excursions and midrange don't mix well because of high THD and IMD distortions. That means you can't use the big excursion in a bass-mid use. And as a subwoofer the parameters aren't very good for a clean bassreflex use.
If you want to use it that way, sure. But you won't profit from the big excursion or the double spider (which means higher losses) or in other words: If you want something like that, you can get it a lot cheaper.
None of the Volt drivers have exceptionally large linear excursion, they do however have a large excursion before damage.
My 12" woofers have a Xmax of +-5.2mm with Xdam of 30mm but the most extreme is their 10" PA mid with an Xmax of 0.44mm and Xdam of 20mm. Both have double spiders.
Always good to have more than sufficient headroom but double spiders also make it easier to achieve a symmetric suspension and they are part of the cooling system.
All in all Volt drivers are very, very good. Among the very best available.
My 12" woofers have a Xmax of +-5.2mm with Xdam of 30mm but the most extreme is their 10" PA mid with an Xmax of 0.44mm and Xdam of 20mm. Both have double spiders.
Always good to have more than sufficient headroom but double spiders also make it easier to achieve a symmetric suspension and they are part of the cooling system.
All in all Volt drivers are very, very good. Among the very best available.
Attached is the simulated MLTL response using the BM165 from the MJK worksheet.
Cabinet size is 200x206x840mm (WxDxH), 18mm wall thickness
Port is 66mm dia, 127mm long, near the bottom
Damping is 0.5lb/cu ft, for the top 2/3rds of the cabinet
Indicates -3dB at ~45Hz, -6dB at ~40Hz.
Cabinet size is 200x206x840mm (WxDxH), 18mm wall thickness
Port is 66mm dia, 127mm long, near the bottom
Damping is 0.5lb/cu ft, for the top 2/3rds of the cabinet
Indicates -3dB at ~45Hz, -6dB at ~40Hz.
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