Comparison of Volt B2500.1, B250.8, RV3143 and S/S 25W8565-01

jheoaustin · 29th January 2004, 08:43 PM

I'd like to get some opinions from experts who have used following drivers:

Volt RV3143
Volt B2500.1
Volt B250.8
Scanspeak 25W8565-01

Could you share your experience and sound evaluation with these units?

jheoaustin · 30th January 2004, 06:25 PM

Can anybody help me on this?

5th element · 31st January 2004, 12:24 AM

Volt drivers are not usually discussed here on the DIY boards, or if they are nowhere near as often as SEAS, vifa, peerless or SS.
I would imagine less people will have experience with them so you may not get lots of responses. Having said that from bits and bobs that ive picked up over the years, volts are meant to be very good, I have never seem a bad bit of press surrounding them.

spd · 12th February 2004, 03:27 PM

Hi

I've used all 3 volt driver:-

B250.8 Very Good. Smooth tight Bass
B2500.1 One of the very best bass drivers. VERY tight bass, massive power handling. Very critical on bad recordings
RV3143 Similar to the B2500.1 More forgiving. Don't use above 300Hz.

If you are using the SM75-150 - go with B2500.1 or B250.8
and don't listen to what others say about crossing over at 800Hz.
Use the SM75-150 at 380Hz - As ATC do - Amazing sound

jheoaustin · 13th February 2004, 08:53 AM

spd,

Thank you very much for sharing your experience. Could you tell me the woofer enclosure volume for B2500.1? Was it 70 liter as recommended by Volt?

spd · 13th February 2004, 09:21 AM

I used 70L tuned to 30Hz. Im building some more at the
moment using 2 drivers in 100L enclosure. These will probably crack the walls! If you use the RV3143 then I would use 75L tuned to around 35Hz. Either drivers will be amazing. The main
thing you will notice is no bass boom

jheoaustin · 14th February 2004, 02:44 PM

Thank you very much for your information. It allowed my final decision to go with B2500.1. B2500.1 seems to be better than RV3143 at least in 2 aspects:

B2500.1 has lower bottom end response than RV3143 with around 70 liter volume.
RV3143 may not be good for SM75-150 as SM75-150 is not recommended to crossover at as low as 300Hz.

Am I right?

Nardis · 14th February 2004, 03:50 PM

Question for spd.
I just got an offer, at a very good price, of a pair of mothballed unused Volt B250s. They are the original model in the series.
There's no spec sheeet with them. Volt say the specs would be "similar to the B250.8" but don't have a sheet
Do you or anyone else have the parameters for this model lying about somewhere?
I'd use them for bass bins following the suggestion of a 35litre enclosure on the B250.8 page of the website,

http://www.voltloudspeakers.co.uk/Lo...dy_b250_8.html

but I'd like to run the numbers accurately first
Help gratefully received

spd · 16th February 2004, 08:56 AM

Hi

If you are crossing over above 300Hz then go for the B2500.
The RV3143 is louder and as I said before it is more forgiving for old recordings. Both units have very similar qualities. The B2500
can be difficult to use because of the low Q. You will need to
fill the enclosure 2/3 with wadding.

Spec for B250.1:-
I got this from an old Wilmslow Audio cat. I'm not convinced
that it's correct but here goes
sens 93dB ??
Fs 27Hz
Qa 1.84
Qe 0.27
Qt 0.24
Vas 116L
Power 125W
Mechanical details are the same as B250.8

ShinOBIWAN · 25th February 2004, 08:15 PM

Which Volt driver do Rel use for the Stentor and Studio III models??

Pretty sure its the 2500.1, can anyone confirm?

29th January 2004, 08:43 PM	#1
jheoaustin diyAudio Member Join Date: Jan 2004 Location: Torrance, CA, USA	Comparison of Volt B2500.1, B250.8, RV3143 and S/S 25W8565-01 I'd like to get some opinions from experts who have used following drivers: Volt RV3143 Volt B2500.1 Volt B250.8 Scanspeak 25W8565-01 Could you share your experience and sound evaluation with these units?

31st January 2004, 12:24 AM	#3
5th element diyAudio Member Join Date: Oct 2002 Location: England	Volt drivers are not usually discussed here on the DIY boards, or if they are nowhere near as often as SEAS, vifa, peerless or SS. I would imagine less people will have experience with them so you may not get lots of responses. Having said that from bits and bobs that ive picked up over the years, volts are meant to be very good, I have never seem a bad bit of press surrounding them. __________________ What the hell are you screamin' for? Every five minutes there's a bomb or somethin'! I'm leavin! bzzzz! Droggon Attack!

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30th January 2004, 06:25 PM	#2
jheoaustin diyAudio Member Join Date: Jan 2004 Location: Torrance, CA, USA	Can anybody help me on this?

12th February 2004, 03:27 PM	#4
spd diyAudio Member Join Date: Feb 2004 Location: UK	Hi I've used all 3 volt driver:- B250.8 Very Good. Smooth tight Bass B2500.1 One of the very best bass drivers. VERY tight bass, massive power handling. Very critical on bad recordings RV3143 Similar to the B2500.1 More forgiving. Don't use above 300Hz. If you are using the SM75-150 - go with B2500.1 or B250.8 and don't listen to what others say about crossing over at 800Hz. Use the SM75-150 at 380Hz - As ATC do - Amazing sound

13th February 2004, 08:53 AM	#5
jheoaustin diyAudio Member Join Date: Jan 2004 Location: Torrance, CA, USA	spd, Thank you very much for sharing your experience. Could you tell me the woofer enclosure volume for B2500.1? Was it 70 liter as recommended by Volt?

13th February 2004, 09:21 AM	#6
spd diyAudio Member Join Date: Feb 2004 Location: UK	I used 70L tuned to 30Hz. Im building some more at the moment using 2 drivers in 100L enclosure. These will probably crack the walls! If you use the RV3143 then I would use 75L tuned to around 35Hz. Either drivers will be amazing. The main thing you will notice is no bass boom

14th February 2004, 02:44 PM	#7
jheoaustin diyAudio Member Join Date: Jan 2004 Location: Torrance, CA, USA	Thank you very much for your information. It allowed my final decision to go with B2500.1. B2500.1 seems to be better than RV3143 at least in 2 aspects: B2500.1 has lower bottom end response than RV3143 with around 70 liter volume. RV3143 may not be good for SM75-150 as SM75-150 is not recommended to crossover at as low as 300Hz. Am I right?

14th February 2004, 03:50 PM	#8
Nardis diyAudio Member Join Date: Aug 2003 Location: London	Question for spd. I just got an offer, at a very good price, of a pair of mothballed unused Volt B250s. They are the original model in the series. There's no spec sheeet with them. Volt say the specs would be "similar to the B250.8" but don't have a sheet Do you or anyone else have the parameters for this model lying about somewhere? I'd use them for bass bins following the suggestion of a 35litre enclosure on the B250.8 page of the website, http://www.voltloudspeakers.co.uk/Lo...dy_b250_8.html but I'd like to run the numbers accurately first Help gratefully received

16th February 2004, 08:56 AM	#9
spd diyAudio Member Join Date: Feb 2004 Location: UK	Hi If you are crossing over above 300Hz then go for the B2500. The RV3143 is louder and as I said before it is more forgiving for old recordings. Both units have very similar qualities. The B2500 can be difficult to use because of the low Q. You will need to fill the enclosure 2/3 with wadding. Spec for B250.1:- I got this from an old Wilmslow Audio cat. I'm not convinced that it's correct but here goes sens 93dB ?? Fs 27Hz Qa 1.84 Qe 0.27 Qt 0.24 Vas 116L Power 125W Mechanical details are the same as B250.8

25th February 2004, 08:15 PM	#10
ShinOBIWAN diyAudio Member Join Date: Feb 2004 Location: UK	Which Volt driver do Rel use for the Stentor and Studio III models?? Pretty sure its the 2500.1, can anyone confirm?

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