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Supravox 165-2000
Supravox 165-2000
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Old 23rd November 2018, 07:34 PM   #31
TrashTrip is offline TrashTrip  Russian Federation
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Hello all.
Maybe my question would not be entirely appropriate.
Is Supravox TG1 suitable for this speaker 165th series?
I plan to build speakern on 165th series and dont know how TG1 sounds.
I like SB acoustics (berillium) but internet is empty abot TG1 rewiews(
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Old 6th December 2018, 02:56 PM   #32
inrank is offline inrank  United Kingdom
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Well, I found a pair in stock, from toutlehautparleur.com, excellent service!
Fullrange speaker Supravox 165-2000, 4 ohm, 7 inch

Arrived today so thought I would test them, hoping there would not be such quality control issues as mbrennwa had below:

Supravox 165-2000 parameter inconsistencies

Out of the box, they came with individual spec sheets with the measured parameters, not looking good as they both say a Qe of around 1.5!
Most of the other specs are roughly in the right ball park, fs a little high but not too far.

I thought I would give it a go on my new Dayton DATS, and below are the results.

Supravox Website:
Fs : 70Hz Re : 4.1Ω Qts : 0.78 Qe : 0.9 Qm : 6 Vas : 40 L Bl : 3.2 Cms : 1.1 Mms : 4.9 g Sd : 165 cm2

Measured (1)
Fs : 83Hz Re : 4.1Ω Qts : 1.24 Qe : 1.46 Qm : 7.9 Vas : 27 L Bl : 2.7 Cms : 0.71 Mms : 5.05 g Sd : 165 cm2
Measured (2)
Fs : 80.1Hz Re : 4.1Ω Qts : 1.28 Qe : 1.55 Qm : 7.4 Vas : 30 L Bl : 2.5 Cms : 0.79 Mms : 4.8 g Sd : 165 cm2

Click the image to open in full size.

Supravox 165-2000 (1) by Robert Seymour, on Flickr

Click the image to open in full size.

Supravox 165-2000 (2) by Robert Seymour, on Flickr
Well, drivers are back, completely new pair. Very well matched everywhere and although the Qts/Qes is still a little high, its a lot closer to the published specs.
SPL @ 2.83v for both is around 99dB which is quite impressive!
Quite happy where they are at though.

More importantly though, they sound great to me so far, running full range with no filter on the end of the 2wpc Decware Zen SET.

Click the image to open in full size.
Supravox 165-2000 (2-A) by Robert Seymour, on Flickr

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Supravox 165-2000 (2-B) by Robert Seymour, on Flickr
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Old 6th December 2018, 03:09 PM   #33
Soundhappy is offline Soundhappy  France
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Superb news Enjoy
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Old 7th December 2018, 06:16 AM   #34
GM is offline GM  United States
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With just a couple of watts they may not ever really break in, but normally Fs, Qts drops, Vas increases, so in theory would eventually get somewhat closer to spec, flattening out the response a bit. In short, measured/properly calculated efficiency [n0] is what [at least some] manufacturers use to check how close to spec they are, so with one spot on and one ~1 dB low, can't reasonably expect any better since 10% [still?] is the norm for many manufacturers.

With such a high Fs, what are you using for the bass or are you tuning well below Fs due to the high Qt?

GM
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Old 7th December 2018, 09:28 AM   #35
inrank is offline inrank  United Kingdom
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With just a couple of watts they may not ever really break in, but normally Fs, Qts drops, Vas increases, so in theory would eventually get somewhat closer to spec, flattening out the response a bit. In short, measured/properly calculated efficiency [n0] is what [at least some] manufacturers use to check how close to spec they are, so with one spot on and one ~1 dB low, can't reasonably expect any better since 10% [still?] is the norm for many manufacturers.

With such a high Fs, what are you using for the bass or are you tuning well below Fs due to the high Qt?

GM
I am just using them in the test cabinets photo earlier in the thread. The plan is Aperiodic and placed in the corner for bass lift.

Here is the measurement I did with the original drivers (in room, at listening position)

Click the image to open in full size.
Supravox 165-2000 (L) Distortion by Robert Seymour, on Flickr

The peak @ ~33Hz and Valley at ~48Hz are room related as shown below with my old KEF 201/2 and Frugelhorn Lite speakers in the same position. Interestingly there is less suck out between 70Hz and ~120Hz.

Click the image to open in full size.
FHL Vs 201-2 FR (Stereo @ Seat) by Robert Seymour, on Flickr

Last edited by inrank; 7th December 2018 at 09:34 AM.
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Old 7th December 2018, 05:59 PM   #36
GM is offline GM  United States
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Sheesh! Wish my house had this much room gain! Must be really well built. Yeah, need narrow BW 'subs' located wherever along the walls is causing the dip, but then most folks don't 'hear' dips down this low unless it's pointed out to them.

GM
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Old 8th December 2018, 04:27 PM   #37
inrank is offline inrank  United Kingdom
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Sheesh! Wish my house had this much room gain! Must be really well built. Yeah, need narrow BW 'subs' located wherever along the walls is causing the dip, but then most folks don't 'hear' dips down this low unless it's pointed out to them.

GM
Its a solid 1940s ex-council house, we have to get the hammer drill out to put a picture up.
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Old 8th December 2018, 06:02 PM   #38
GM is offline GM  United States
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